Supplement to Science, July 7, 1922. NEW SERIES. VOLUME LV. JANUARY-JUNE, 1922 269595, NEW YORK THE SCIENCE PRESS 1922 THOMAS J. GRIFFITHS & SONS 11 Liberty Street, UTICA, N. Y. CONTENTS AND INDEX. NEW SERIES. VOL. LV—JANUARY TO JUNE, 1922 NAMES OF CONTRIBUTORS ARE PRINTED IN SMALL CAPITALS Agriculture, Research in, A. F. Woops, 64; L. 8. Frierson, 317; Soc. of England, 366; Doc- torates in, W. H. CHANDLER, 619. Agronomy Soc., Amer., P. E. Brown, 270 Aleohol, Grain, L. E. Grirrin, 262; Butyl, G. W. Martin, 429. ALEXANDER, J., Value of Tilth, 156. Alkali and Cellulosic Materials, H. Hisperr, 428. AuLarpD, A. A., Photoperiodism, 582. AuLEE, W. C., Amer. Soc. Zoologists, 159. ALLEN, E. W., Science in Agriculture, 6 ALLEN, W. E., Writing Popular Science, 454 Ameboid Bodies, L. O. KUNKEL, 73 American Association for the Advancement of Science: Significance of Calcium for Higher Green Plants, R. H. Trun, 1; Method of Sci- ence in Agriculture, E. W. ALLEN, 6; Observa- tion versus Experimentation, J. STEBBINS, 29; Toronto Meeting, B. E. Livineston, 34, 61, 68; Evolutionary Faith and Modern Doubts, W. Bateson, 55; Trend of Earth History, BE. BLACKWELDER, 83; Report of Treasurer and Secretary, 103; Past and Future of Medical Sciences in U. S., J. Ertanerr, 135; Interna- tional Auxiliary Language, 8S. W. STRATTON, 166; Mechanical Analogy in Theory of Equa- tions, D. R. Curtiss, 189; Atomic Nuclei, J. ©. McLennan, 219; Organization of Knowledge, F,. L. Horrman, 247; Pacific Coast Division, 297; Section L, History of Science, F. EH. Brascu, 405; Grants for Research, J. STEBBINS, 409; Section A—Mathematics and Associated Societies, W. H. Rorver, 519; Section B— Physics, S. R. Wituiams, 520; Section K— Social and Economic Sciences, EH. L. HorrMan, 521; Section N—Medical Sciences, A. J. GoLp- FARB, 521; Tucson Meeting, Southwestern Divi- sion, 542; Section F—Zoological Sciences, H. W. Ranp, 572; Section G—Botanical Sciences, R. W. Wvyuir, 573; Section I—Psychology, F. N. Freeman, 574; Section O—Agriculture, P. HE. Brown, 575; Southwestern Division, 45; Resolutions, 62; Associateship in, 93; Member- ship, 121; Grants for Research, J. STEBBINS, 256; Salt Lake City Meeting, B. E. Livinasron, 450, 633; Section N, 472; Meeting of Execu- tive Committee, B. E. Livineston, 680; Secre- tary’s Report, 682; Section M—Medical Sci- ences, P. GILLESPIE, 683 ANDREWS, R. C., Amer. Mus. of Nat. History, 584 Angiosperms, E. C. Jurrrey, A. E. Loneury, C. W. T. PenLaAND, 517 Animal Experimentation, E. WIGGLESWoRTH, J. C. PuHILLies, T. Barsour, 48 Apples, Stem End Rot, C. C. Barnum, 707 Archeology, Mexican, 365 Argentine Rural Society, F. LAMSON-ScriBNER, 119 Astronomical, Amer. Soc., J. Sreppins, 298; Int. Union at Rome, 695 Atmospheric Pollution, A. McAnig, 596 Atomic, Nuclei, J. C. McLennan, 291; Structure, M. L. Hueeins, 459 Bacteriologists, Amer. Soc., Culture Collection, 423 Bacteriology, Kesearch Fellowship in, 423 Baird, Spencer F., Memorial, H. M. Smiru, 634 ~ Barsour, T., Animal Experimentation, 48 Barker, L. F., Endocrine Glands, 685 Barley, K. S. Hox, 378 Barnum, C. C., Stem End Rot of Apples, 707 Barus, C., Physics, 19; Acoustic Topography, 321 Bascom, K. F., Free-martin, 624 Baskerville, Charles, W. A. Hamor, 693 Bareson, W., Evolution, 55, 373 Bean, Bacterial Wilt of, F. Hrpcrs, 433 Brcrine, L. B., University of Graz, 595 BrEeEsBE, R., Gels, 75 BELLING, JOHN, Haploid Mutant in Jimson Weed, 646 Berwepict, H. M., Vein-Islets of Leaves, 399 Benzene, M. L. Huaains, 679 Brineuam, EH. C., Metric Standardization, 232, 664 Biological, Stains, 43; H. J. Conn, 284; Societies, Federation of, A. F. SHULL, 245 Biology, Amer. Soe. for Exp., C. W. GREENE, 335, 379 Biotie Areas and Heologic Habitats, L. R. Dic, Birds, Banding of, C. L. WuirtLe, 233; Count of, 531; Decerebration in, F. W. WrymouteH, 538; Sound Location in, J. Mariuarrp, 208 BLACKWELDER, E., Earth History, 83, 114 Buaxrr, 8S. F., Weeds, 455 BLAKESLEE, A. F., Globe Mutant of Datura, 597; Haploid Mutant, 646 Bombay School of Tropical Medicine, 669 Bonazzi, A., Pasteur Centenary, 50 Boropin, D. N., Russian Bureau of Applied Bot- any, 129 Bowie, WILLIAM, Geodetic Operations in U. S., 645 Branner, John Casper, D. 8. Jorpan, 340, 530 Brascu, F. E., See. L, History of Science, 405 Brivaz, N., Norman Bridge Laboratory, 327 | British, Universities, Relief Work, 44; Associa- tion, 68; Research on Cement, 148; Columbia Expedition, 173 Brooxs, C. F., Amer. Meteorological Soc., 636 Brown, P. E., Amer. Soc. Agronomy, 270; Sec. O—Agri., 575 BucuHouz, J. T., Globe Mutant of Datura, 597 Bugs and Antenne, E. P. FELT, 528 Burcess, P. S., Hydrogen-Ion Concentration of Soil, 647 Buscu, H. P., Metric System, 400 Business and Engineering Training, 234 Butter, Digestibility of, A. D. Hotmss, 659 iv SCIENCE Cairns, W. D., Math. Assoc. of America, 599 Cagori1, F., Heinrich Suter, 447 Calcium for Higher Green Plants, R. H. True, 1 Calcutta School of Tropical Medicine, 447 Cauman, W. T., Ray Society, 156 - CAMPBELL, WM., Henry Marion Howe, 631 Carbon Monoxide Poisoning, 66 Cartailhac, Emile, N. C. NELson, 68 Carr-SaunpErs, A. M., Inheritance in Swine, 19 CasTLe, W. E., Vienna White Rabbit, 269, 429; Y-chromosome Type, 703 Catastrophism, New, A. M. Minurr, 701 Cat-tail as Feed, L. E. FRruDENTHAL, 456 CatTeLt, McK., Peripheral Circulation, 434 Cell Theory, J. H. Grrovup, 421 Ceramic Society, American, 588 CuHampLain, A. B., Long-lived Woodborer, 49 CHANDLER, W. H., Doctorates in Agriculture, 619 CuHasn, M. A., Iridescent Clouds, 263 Chemical, Soc., Amer., C. L. Parsons, 28, 77, 132, 185, 212, 307, 348; Int. Conference at Utrecht, 369; Engineering Lectures, 235; Exposition, 532 Chemicals, ‘‘Key,’’ 73 Chemistry, The New, 157 Ciliary Action, Effect of Acid on, J. M. D. Otu- sTED and J. W. MacArruur, 625 Circulation, Peripheral, McK. Carret, 434 Cuark, G. L., Geometry and Inorg. Chemistry, 401 CuaRK, H. L., Mortensen on Development and Larval Forms of Echinoderms, 431 CLARKE, J. M., Presentation to Professor Emer- son, 92 CLtemens, W. A., Hydra in Lake Hrie, 445 Clinical Medicine, S. R. Miuumr, 577 Clouds, Iridescent, M. A. CHasn, 262 Coal, World Production of, 341 CocKERELL, T. D. A., Wheeler on Social Beetles; Farquharson on Bionomies, 350 Coir, L. J., Genetics Section Meeting, 326 Cour, W. H., Drosophila, 678 Colloid Chemistry at Univ. of Wisconsin, 393 Collyer, Robert Hanham, H. F. Osporn, 72 Concilium Bibliographicum, V. Kentoce, 11 Conn, H. J., American Biological Stains, 284 Constants, Annual Tables, 469 Coserave, J. O’H., Popular Science, 594 Cowley, Abraham, R. J. H. DrLoacu, 127 Crampron, H. E., Influenza in Pacific Islands, 90 Crayfish Trap, E. C. O’RoKE, 677 Crop Protection Institute, 14 aang W. J., Publication of Scientific Papers, 3 Crump, S. E., Mosquito Attachment, 446 Cultivation and Soil Moisture, H. A. Noyes, 610 Curtiss, D. R., Equations, 189 cytology of Vegetable Crystals, E. C. JErrrey, Danizts, F. B., Solar Energy, 618 Davis, B. M., Species, Pure and Impure, 107 Davis, Charles Henry, 2d, 200 Davis, W. M., Deflecti-n of Streams, 478 Daylight Illumination, C. L. MersncEr, 20 DeLoacu, R. J. H., Abraham Cowley, 127 Pies L. R., Biotic Areas and Ecologic Habitats, Diseases, Animal, 507 Dorsey, N. E., Writing Popular Science, 374, 593 Dougherty, Cardinal, on Vivisection, 150 ConTENTS AND INDEX. Drosophila, and Ultraviolet, F. E. Lurz and F. K. RicutMyeER, 519; Photie Stimulus and Rate of Locomotion, W. H. CoE, 678 DurrenpDack, O. S., Hydrogen in Tungsten Fur- nace, 210 Duty on English Books, G. D. Harris, 240 Earth, History, E. BLAcKWELDER, 83, 114; Rota- tion and River-Bank Movements, E. HAYES, 567 Keological Investigations, C. HARTMAN, 292 Eddy, Henry Turner, J. J. F., 12 Egg Secretion, O. GLASER, 486 EISENHART, L. P., Hinstein Equations, 570 Electrified Microsections, 8S. W. Grismr, 212 Electron, Mass of the, at Slow Velocity, L. T. Jones and H. O. Hours, 647 Elements, Disintegration of, 422 Emerson, Professor, Presentation to, CLARKE, 92 Emission Bands of Erbium Oxide, E. L. NicHous and H. L. Howes, 53 Engineering, Council, Amer., 95; change Professors in, 257 Entomological Society, Louisiana, T. HE. Hotto- WAY, 436 Equations, D. R. Curtiss, 189 Eruancer, J., Med. Sciences in U. S., 135 Eskimos, Copper, Harotp Noicr, 611 Evolution: Evolutionary Faith and Modern Doubts, W. Batrson, 55, 373; William Bateson on Darwinism, H. F. Osporn, 194; William Jennings Bryan on, 242, 264, 292; in Kentucky, 149; A. N. Miuurr, 178, 316; Teaching of, 318; EK. M. Kinpiz, 374; W. E. Rirrer, 398; in Texas, S. A. R., 515; W. W. KreEn, 608, 669 Ewine, H. E., Nearctie Proturans, 706 EycLesHyMER, A. C., Medical Education, 437 Eyer, J. R., Tipburn, 180 J. M. French Ex- Farnuam, M. E., Haploid Mutant, 646 Fasten, N., Fish Parasitism, 583 Feit, E. P., Bugs and Antenne, 528 Fenton, F. A., Tipburn, 53 Fertilization, Selective, D. F. Jonrs, 348 FESSENDEN, R. A., Star Diameters, 180 Field Museum Expeditions, 94 Fiji Islands, Expedition to, 471 Fisner, W. K., Clark’s Monograph of Existing Crinoids, 376 Fisheries, Alaska, 470, 561; Cal. State Lab., 507; U. S. Commissioner of, 637 Fish Parasitism, N. Fasten, 583 FLetcHer, W., Aims and Boundaries of Physi- ology, 551 Flora of Porto Rico, 470 Footprints in Kansas, H. T. Martin, 99 Fossil Vertebrates at Stuttgart, W. D. Marrurw, 156 Foxhall Jaw, H. F. Osporn, 128 France, Exchange Professor with, 534 Frazer, John, 534 FREEMAN, F. N., Section I—Physiology, 574 Free-martin and Interstitial Cells, F. R. Linum, K. F. Bascom, 624 Frierson, L. 8., Tilth in Agriculture, 317 Fruit Trees, H. B. Turkey, 241, 423 Fuller’s Seale, H. R. Rosen, 76 GaRNER, W. W. Photoperiodism, 582 GarRIson, F. H., Sudhoff’s Paracelsus, 155 New Sezrts, Votume LV GrisEr, S. W., Electrified Microsections, 212 Gels, Forms of Gas and Liquid Cavities on, _ A. W. C Menzies and R. Brerse, 75 Geneties, C. B. Hurcuison, 416 Geodetic and Geophys. Union, Rome Meeting, 614 Geographical Soc., Amer., 449; Royal Soc., 671 Geography, H. P. LirtLe, 362 Geologic Diffusion, G. O. Suir, 596 Geologists, Assoc. of, in Pekin, 392 Geology, W. Vermont, C. E. Gorpon, 208 Geometry and Inorganie Chemistry, G. L. CLARK, 401 Geophysical Union, Amer., 311 GeRouLD, J. H., Cell Theory, 421 GILLESPIE, P., Sec. M at Toronto Meeting, 683 Glands, Endocrine, L. F. Barker, 685 GuaseER, O., Egg Secretion and Ethyl Butyrate, 486 Glass Flowers, 286 Globe Mutant, J. T. BucnHouz, A. F. BLAKESLEE, 597 Gotprars, A. J., Sec. N—Med. Sciences, 521 GoopsPpEED, A. W., Amer. Philosophical Soe., 649 Gorgas Memorial Institute, 149, 171 Gorpon, C. E., Geology of Western Vermont, 208; _ Origin of Soil Colloids, 676 Graphs, W. H. Rorver and E. R. Heprick, 401 Gravitational Absorption, P. R. Hry1, 349 Graz, University of, L. B. Brcxine, 595 GREENE, C. W., Amer. Soc. for Exp. Biology, 379 GrirFiIn, L. E., Grain Alcohol, 262 GupGER, E. W., Giant Ray, 338 Guat, M. F., Nat. Research Council Fellowships, 36 : Haae, J. R., Hydrogen Electrode, 460 Hau, G. E., Constitution of Matter and Nature of Radiation, 332 Halifax, University of, 587 Hausry, F. A., Metric System, 400 Hamor, W. A., Charles Baskerville, 693 HANNS G. D., Cal. Acad. of Sci., 305; Fur Seals, Harpy, ARTHUR C., Kaieteur Falls, 643 Harris, G. D., Duty on English Books, 240 Hartman, ©., Ecological Investigations, 292 Hayes, E., River-Bank Movements, 567 Hayrorp, J. F., Geodetic Operations in U. S., 645 Health, Public, Washington Conference on, 287 Heckscher Research Foundation, 41 Hences, F., Bacterial Wilt of Bean, 433 Heprick, E. R., Graphic Analytic Method, 401 HeErinG, C., Paracelsus Library, 514 ac? G. W., Fernald’s Applied Entomology, Hesperopithecus, H. F. Osporn, 463 HeEYL, P. R., Gravitational Absorption, 349 Hispert, H., Alkali and Cellulosic Materials, 428 HILDEBRAND, J. H., Training Scientists, 355 History of Science, P. B. McDonaup, 73, 122 Hor, K. 8., Barley, 378 HorrMan, F. L., Organization of Knowledge, 247, 279; See. K—Social and Economie Sciences, 521 Hotioway, T. E., Louisiana Entomol Soe., 436 Houtmegs, A. D., Digestibility of Butter, 659 Hours; H. O., Mass of Electron at Slow Velocity, Hooker, H. D., Jr., Horticulture, 384 Howarp, L. O., Carpenter on Insect Transforma- tion, 50 Howe, Henry Marion, WM. CAMPBELL, 631 SCIENCE. v Howes, H. L., Emission Bands of Erbium Oxide, 53 HrpuicKa, A., Scientific Work in Russia, 618 Hueerns, M. L., Atomic Structure, 459; Benzene, 679 Human Yolk Sac, F. T. Lewis, 478 Hunter, W. D., J. D. Mitchell, 469 Hurcuison, C. B., Genetics, 416 Hypr, R. R., Immune Hemolytic Sera, 541 Hydra in Lake Erie, W. A. Curmrns, 445 Hydrogen, Electrode, J. R. Haag, 460; in Tung- sten Furnace, O. F. Durrrnpack, 210 Hygiene, Institute of, in London, 310 Tce and Humphry Davy, A. T. Jones, 514 Individualism in Medical Hducation, EYCLESHYMER, 437 Influenza in Pacific Islands, H. E. Crampron, 90 Inheritance in Swine, A. M. Carr-SaunprErs, 19 International Congress of History of Medicine, 635 Todides, J. F. McCurnpon, 358 INS 1G JEFFREY, E. C., Angiosperms, 517; Cytology of Vegetable Crystals, 566 Jenkins, A. E., New Sclerotina on Mulberry, 353 JENNINGS, O. E., Streams of Long Island, 291 Johns Hopkins University, 257 Jonus, A. T., Ice and Humphry Davy, 514 Jonrs, D. F., Selective Fertilization, 348 Jones, L. T., Sealing Tungsten into Pyrex, 352; Mass of Electron at Slow Velocity, 647 JorDAN, D. S., John Casper Branner, 340 Karmprrert, W., Writing Popular Science, 621 Kann, M., Vocabulary of Metabolism, 704 Kaieteur Falls, A. C. Harpy, 643 Kern, W. W., Evolution, 603 KeLuoce, V., Concilium Bibliographicum, 11; University Professors in Poland, 430, 704; Am. Com. to Aid Russian Scientists, 667 Keuty, J. P., Coloration in Phlox, 245 Keys in Systematic Work, E. B. WILLIAMSON, 703 Kilobar, Kilocal, Kilograd, A. McApin, 207 Krinpir, E. M., Evolution, 374 Kniep, C. T., Mercury Vapor Pumps, 183 Knowledge, Organization of, F. L. Horrman, 279 Kraatz, W. C., Museum Pests, 644 KUNKEL, L. O., Ameboid Bodies, 73 Kunz, G. F., Lacroix on Déodat Dolomieu, 209 Laboratory Determinations, H. G. TURNER, 53 Lactrodectus Mactans, J. R. Watson, 539 LAMSON-ScRIBNER, F., Arg. Rural Soc., 119 Language, International, S. W. Srrarron, 166, 457 ; LarsELL, O., Biological Researches of Gustaf Retzius, 515 Larsen, J. A., Soil Shifting and Deposits, 457 League of Nations, Health Organization of, 540 Leaves, Vein-Islets of, H. M. Brnepict, 399 Lewis, F. T., Human Yolk Sac, 478; Spiral Trend of Intestinal Muscle Fibers, 704 Library, Paracelsus, C. Hmrine, 514 Liesegang Ring Formation, H. A. McGuiean, 99 Light, Lectures on at Univ. of Wisconsin, 312 Linus, F. R., and K. Ff. Bascom, Free-martin and Interstitial Cells, 624 Linpsey, J. B., Sodium Hydrate and Grain Hulls, 131 Liruium, R. W. G. Wyckorr, 130 vi SCIENCE Lirriz, H. P., Geography, 362 Lrvrneston, B. E., Water Cultures, 483; Salt Lake City Meeting, 450, 633; Meeting of Exec. Com. of A. A. A. S., 680 Lozs, L., Stereoptropism, 22 Lonetey, A. E., Angiosperms, 517 Lorentz, H. A., Research in N. Bridge Labora- tory, 334 Lowell, Percival, J. R., 50 Luminescence, E. L. NicHous, 157 McAptg, A., Kilobar, Kilocal, Kilograd, 207; At- mospherie Pollution, 596 MacArruur, J. W., Acid on Ciliary Action, 625 McCuienpon, J. F., Are Iodides Food? 358 McCuune, OC. E., Sharp’s Introduction to Cytol- ogy, 482 : McDonatp, P. B., History of Science, 73; Writing of Popular Science, 621 McGuiean, H. A., Liesegang Ring Formation, 99 McLennan, J. C., Atomic Nuclei, 291 Mani, E. G., Science of Athletics, 523 Matruuaird, J., Sound Location in Birds, 208 Mammalogists, Society of., 626 Mann, A., Water-Immersion Objectives, 539 Martin, G. W., Butyl Alcohol, 429 Martin, H. T., Footprints in Kansas, 99 Mathematical, Amer., Soc., R. G. D. RicHarDson, 354, 600, 472; Association of America, W. D. CairNS, 599; Projects, H. EH. SuavueutT, 146; Publications, 508 Mathematies, Reorganization of, 172 Marruew, W. D., Fossil Vertebrates at Stuttgart, 156 Mavor, J. W., Production of Non-Disjunction by X-Rays, 295 Medical Association, American, 613 Medicine, Third Int. Congress of History of, 590 Meisincrr, ©. L., Sky Brightness, 20; Tempera- tures in United States, 292; Streamflow, 622 Mendel Centennial, G. H. SHutn, 392 Menzies, A. W. C., Gels, Forms of Gas and Liquid Cavities in, 75 Mercury Vapor Pumps, C. T. Knipp, 183 MerriLu, G. P., Meteorites, 675 Metabolism, Vocabulary of, M. Kaun, 704 Mercatr, M. M., Penard on Flagellates, 74 Meteorites, G. P. Mrrrin, 675 Meteorological Soc., Amer., C. F. Brooks, 636 Meteorology and Climatology, O. L. Murtstnerr, 20, 292, 622 Metric Standardization, E. C. BineHam, 232, 664; H. Ricuarps, 515; F. A. Hausry and H. P. Buscu, 400 Microscopic Sections, G. H. NerpHam, 72 Minter, A. M., Kentucky and Evolution, 178, 316; New Catastrophism, 701 Mittrr, 8. R., Clinical Medicine, 577 Miniian, R. A., Acceptance of Norman Bridge Laboratory, 330 Mitchell, J. D., W. D. Hunrer, 469 Mircuetn, 8. A., Pickering Memorial, 467 Montelius, Osear, N. C. Nenson, 68 Mosquito Attractant, S. E. Crump, 446 Mount Everest Expedition, 342 Mulberry, New Sclerotina on, E. A. Srecnrr and A. BE. JENKIns, 350 Muscle Fibers, Spiral Trend of Intestinal, F. T. Lewis, 704 ConTENTS AND Inpex Museum, of Natural History, Amer., 311; Gifts to, 695; R. C. ANDREWS, 584; Pests, W. C. Kraarz, 644 Mutant, Haploid in Jimson Weed, A. F. BLAKE- SLEE, J. Benuina, M. E. Farnam and A. D. BERGNER, 646 Mycology, Review of, 561 National, Academy of Sciences, Bache Fund, 173; E. E. Stosson, 465, 486; Grants for Research, 563; Research Council, Fellowships of, 561; M. F. Guyer, 636; Chairmen, 637 Naturalists, Amer. Soc., A. F. SHunt, 105; Assoe. in Pekin, 392 Nectarina in Texas, F. C. PELLETT, 644 NrErEDHAM, G. H., Protection of Microscopic Sec- tions, 72 Neuromotor Apparatus of Paramecium, C. W. Rees, 184 Nicr, L. B., Oklahoma Academy of Science, 461 Nicuots, BH. L., Emission Bands of Erbium Oxide, 53; Luminiscence, 157 Nicuots, G. E., Deam’s Trees of Indiana, 20 Notcr, Harotp, Copper Eskimos, 611 Norman Bridge laboratory, Dedication, N. Briper, R. A. Minuixan, G. HE. Haur, H. A. LORENTZ, 327 Noyes, H. A., Cultivation and Soil Moisture, 610 Observation vs. Experimentation, J. STEBBIns, 29 Oumstep, J. M. D., Ciliary Action, 625 Origin of Species, D. S. JorDANn, 642 O’Roxrze, E. C., Crayfish Trap, 677 Ossorn, H. F., Robert Hanham Collyer, 72; Lost Foxhall Jaw, 128; William Bateson on Dar- winism, 194; Hesperopithecus, 463 PaumMeEr, F., Jr., Rotertia, 317 Paramecium, C. W. REEs, 184 Parsons, C. L., Amer. Chem. Soc., 23, 77, 132, 185, 212, 307, 348 Pasteur Centenary, A. Bonazzi, 50 Praru, R., Stefansson’s The Friendly Arctic, 320 Prarson, R. A., Agricultural Research, 229 PELLETT, F. C., Nectarina in Texas, 644 PENLAND, C. W. T., Angiosperms, 517 Pension and Insurance Plan at Princeton Uni- versity, 694 Prererson, P. P., Soil Deposition, 102 PHALEN, W. C., Potash Salts, 479 Philippines, Public Health-Work, 15 Pures, J. C., Animal Experimentation, 48 5 Philosophical Soc., Amer., A. W. GooDSPEED, 649 Phlox, Full Coloration in, J. P. Kruuy, 245 Photoperiodism, W. W. Garner, H. A. ALLARD, 582 Physical Soe., Amer., 424 Physics, Advances in, C. Barus, 19; British Insti- tute of, 612 Physiology, W. FLetcHER, 551 Pickering Memorial, 8S. A. MircHELL, 467 Pigments, Yellow, G. B. Riga, 101 Plants, Devonian, G. R. WIeLAnD, 427 Poland, University Professors in, V. KELLOGG, 430, 704 Porto Rico, Flora of, 470 Potash Salts, W. C. PHauen, 479 Prehistoric Studies in France, 122 Proturans, Nearctic, H. E. Ewine, 706 Psychological Corporation, 169, 448 NEw SERIEs, Votume LV Psychology as a Career, C. H. SuasHore, 381 Publication Economy, 181 Public Health and Medical Practice, W. G. THOMPSON, 18 Rabbit, Vienna White, W. E. CasTLn, 269, 429 Radio Service of Univ. of Wisconsin, 613 Ramsay Memorial, 236 Ranpb, H. W., Sec. F—Zool. Sciences, 572 Ray, ‘Society, W. T. Cauman, 156; Giant, E. W. GUDGER, 338 RECORD, S. J., Woods, 266 Ress, C. W., Paramecium, 184 Relativity and Star Diameters, R. A. FESSENDEN, 180 Research, Funds of U. S., J. A. Upprn, 51; in Agriculture, A. BF. Woops, 64; R. A. Prarson, 229; 202; British Industrial Fatigue Board, 368: National Council, Medical Fellowships of, 369; Earning Power of, 376; On Ice Age, 391; Factor of Safety in, ALF. SHULL, 497; Fellow. ships in Mining, 533; Grants for, 409; By Na- tional Academy of Sciences, 563; Institutes, F. GC. Woop, 657; Maintenance of Scientific, C. 8. SHERRINGTON, 629 Resster, O. L., Tipburn, 53 Rhodesian Skull, 129 Ricuarps, H., Metric Campaign, 515 RicHarpson, R. G. D., Amer. Math. Soce., 354, 600 Riec, G. B., Yellow Pigments, 101 Ritrrr, W. H., Evolution, 398 Rockefeller Foundation Gift, 234, 588 Rorver, W. H., Graphic Analytic Method, 401; Grants for Research, 519 Rogers, William Barton, Science Hall, 121 Rosen, H. R., Fuller’s Seale, 76 Roteria, F. PALMER, JR., 317 Royal, Photo. Soe., 257; Acad. of Belgium, 670 Russian Bureau of Applied Botany, D. N. Boro- DIN, 129 Sands, Molding, 367 ScuucHert, C., Clarke on James Hall of Albany, 243 Science, in Agriculture, EH. W. ALLEN, 6; in U. S., J. ERLANGER, 135; in Philippines, J. C. Witt, 197; California Academy of, G. D. Hanna, 305; Oklahoma Academy of, L. B. Nicr, 461; Illinois State, 589; or Athletics, E. G. Manin, 523; Writing Popular, N. E. Dorsry, 374, 593; W. E. ALLEN, 454; E. E. Snosson, 241, 480; J. O’H. Coserave, 593; W. Karmprrert, P. B. McDonatp, 621; Social and Economie, F. L. HorrMan, 521 Scientific, Notes and News, 15, 45, 69, 96, 124, 150, 173, 2038, 237, 259, 288, 312, 344, 370, 394, 424, 451, 473, 510, 5384, 563, 590, 614, 637, 672, 697; Exhibit of Amer. Med. Ass., 613; Instru- ments, 200; British Journals of, 201; Papers, Publication of, W. J. Crozier, 388; 562; Peri- odicals, 67, 171; Side, 430; Societies, English, 258; Work in Russia, A. HrpuidKa, 618 Scientists, Training, J. H. Hmprpranp, 355; Am. Com. to Aid Russian, V. KEeLLoae, 667 Scott, John, Medal Fund, 344 Seals, Fur, G. D. Hanna, 505 SEASHORE, OC. E., Psychology as a Career, 381 Sera, Standards, 44; Immune Hemolytic, R. R. Hype, 541 SCIENCE vii Sheffield Scientific School, Dean of, 671 Sheldon Memorial, 235 SHERRINGTON, C., Maintenance of Scientific Re- search, 629 SHULL, A. F., Amer. Soc. Naturalists, 105; Fed- eration of Biological Societies, 245; Factor of Safety in Research, 497 SHuub, G. H., Mendel Centenary, 392 SrecLer, E. A., New Selerotina on Mulberry, 350 Sky Brightness, C. L. Mrisrneer, 20 SutaucutT, H. E., Mathematical Projects, 146 Stosson, E. E., Writing Popular Science, 241, 480; National Academy of Sciences, 465 Smitu, A. W., 121 SmirH, G. O., Geologie Diffusion, 596 SmitH, HueH M., Spencer F. Baird Memorial, 634 Sodium Hydrate and Grain Hulls, J. B. Linpsry, 131 Soil, Deposition in Palouse Area of Wash. and Idaho, P. P. Prrerson,. 102; J. A. Larsen, 457; Hydrogen-Ion Concentration of, P. 8S. Bur- GESS, 647; Colloids, N. 4. Gordon, 676 Solar Energy, F. B. DaniEts, 618 Species, Pure and Impure, B. M. Davis, 107 Spiders, Poisonous, F. R. WrLsH, 49 Standardization of Industries, 285, 310 STEBBINS, J., Observation vs. Experimentation, 29; Amer. Astronomical Soc., 298; Grants for Research, 256, 409 Stereotropism, L. Lors, 22 Strarron, 8. W., Int. Auxiliary Language, 166; Charles W. Waidner, 389 Streams, Deflection of, by Earth Rotation, W. M. Davis, 478; of Long Island, O. E. Jrnnrngs, 291; Flow Experiment, C. L. MEISINGER, 622 Sudhoff’s Paracelsus, F. H. Garrison, 155 Suter, Heinrich, F. Cagort, 447 Temperatures in U. S., C. L. Mrisinerr, 292 Thermel, W. P. WuirTE, 617 Thompson, Caroline Burling, T. E. 8., 40 THompson, W. G., Public Health, 18 Tilth, Value of, J. ALEXANDER, 156 Tipburn, F. A. Fenton and O. L. Ressurr, 53; J. R. Eyer, 180 TITCHENER, E. B., Wilhelm Wundt, 129 Topography, Acoustic, C. Barus, 321 TRELEASE, 8. F., Water Cultures, 483 Tropical Research Station, H. F. O., 254 True, R. H., Calcium for Higher Green Plants, 1 Tungsten, Sealing into Pyrex, L. T. JonEs, 352; Decomposition ‘of, G. L. Wenpt, 567 Tuning Fork, C. K. Wrap, 73 Turkey, H. B., Fruit Trees, 241 Turner, H. G., Laboratory Determinations, 53 Upven, J. A., Research Funds of U. S., 51 Universities, Doctorates Conferred by, C. Huu and C. J. West, 271 University, and Educational Notes, 18, 48, 71, 99, 127, 154, 177, 206, 240, 262, 291, 316, 347, 372, 397, 427, 454, 477, 513, 537, 565, 593, 617, 642, 675, 701;Kentucky, Sigma Xi at, 671; MeGill, Sigma Xi at, 449; Michigan, 448; Stanford, 423; Wisconsin, 312; Radio Service of, 613; Colloid Chemistry at, 393; Yale, 13, 696; For- estry Building, 287; School of Forestry, 203, and Dr. Chittenden, 393; Dr. White’s Gift to Morgantown and Univ. of Va., 93. vill Vienna, C.-E. A. WINSLOW, 363 Vivisection, Cardinal Dougherty on, 150 Waidner, Charles W., 8S. W. STRATTON, 389 Wundt, Wilhelm, E. B. TircHENnER, 129 Water, Cultures, S. F. TRELEASE and B. E. Livine- ston, 483; Immersion Objectives, A. MANN, 539 Washington Univ. School of Medicine, Student Grades at, M. F. WEyMANN, 690 Warson, J. R., Lactrodectus Mactans, 539 Weap, C. K., Tuning Fork, 73 Weeds, 8. F. Buakn, 455 WetsH, F. R., Poisonous Spiders, 49 Wenpt, G. L., Decomposition of Tungsten, 567 Weymann, M. F., Student Grades at Washington Univ. School of Medicine, 690 WeyMoutH, F. W., Decerebration in Birds, 538 Wuerry, EH. T., Soil Acidity and Plant Distribu- tion, 568 Waiter, W. P., Thermel, 617 Wuittie, 0. L., Banding of Birds, 233 SCIENCE ConTENTS AND TnpEx WIELAND, G. R., Devonian Plants, 427 WiGcGLeswortH, H., Animal Experimentation, 48 Wiuuiams, S. R., Section B—Physics, 520 WiLuiaMson, E. B., Keys in Systematic Work, 703 WINstow, C.-E. A., Vienna, 363 Wirt, J. C., Science in Philippines, 197 Woop, F. C., Research Institutes and Their Value, 657 Woodborer, Long-lived, A. B. CHAMPLAIN, 49 Woops, A. F., Research in Agriculture, “! Woods, S. J. Recorp, 266 Wyrcxorr, R. W. G., Transmuting Lithium, 130 Wruis, R. W., Sec. G—Bot. Sciences, 573 X-Rays, Production of Non-Disjunction by, J. W. Mavor, 295 Y-chromosome Type, W. E. Caster, 703 Zoologists, Amer. Soc., W. C. ALLEE, 159; L. J. CouE, 326; All- Russian Congress, 392 od i ; Ene ee 29 SINGLE COPIES, 15 CTS. VOL, LV Ne Fripay, January 6, 1922 ANNUAL SUBSCRIPTION, $6.00 VOL. LV, NO. 1410 SAUNDERS’ BOOKS ° THREE PRINTINGS Bandler’s The Endocrines iy MHIREE MONTHS This work is a complete record of today’s endocrine knowledge. It gives first the theory, then the effects of under-and over-functioning of the various ductless glands, the symptoms pro- duced, the diagnosis, and demonstrates the treatment with detailed case histories. Octavo of 486 pages. By S. Wyttiis Banorer, M. D., Professor of Diseases of Women, New York Post-Graduate Medical School and Hospital. Cloth, $7.00 net 5 ° REPRINTED IN Burton-Opitz’s Physiology SIX MONTHS This new work is arranged logically; it is brief and simple in style; there are many illustra- tions; strong emphasis is given the physical aspects; and there are many brief clinical references. Octavo of 1158 pages, with 538 illustrations, many in colors. By Russett Burton-Opitz, M.D., Associate Professor of Physiology, Columbia University, New York City. 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Simon, B.A., M.D., Profes- earn M.D., pas ee dica! sor of Clinical Pathology, University of SIEANONONS < NETO, MON) WEISS» OURS ESO) HG Maryland. Ninth Edition. Octavo, 854 MANUAL OF CLINICAL LABCRATORY pages, with 207 engravings and 28 plates. METHODS Cloth, $7.00 net. By Ciype L. Cummer, M.D., Assistant Pro- LABORATORY SYLLABUS fessor of Clinical Pathology, Western Re- OF CLINICAL PATHOLOGY serve University, Cleveland. Octavo, about By Cuarres E. Stmon, M.D. Small Octavo, 470 pages and 136 illustrations. Jn Press. 86 pages. Cloth, $2.00 inet. Le) ————————————— 706-810 Sansom St, | WA & FEBIGER PHILADELPHIA Send me books listed on margin below CIENC Fripay, JANUARY 6, 1922 The American Association for the Ad- vancement of Science: The Significance of Calcium for Higher Green Plants: Dr. Rooney H. True 1 The Method of Science in Agriculture: DRS ES GW ey PANT WINE e ree tea ee os EOS 6 The Concilium Bibliographicum: Dr. WERNON KELLOGG 22.2222. 2cececcctecetectteecceoee iE Henry Turner Eddy: J. J. Buu. 12 Scientific Events: The Sterling Hall of Medicine of Yale University; The Crop Protection Insti- tute; Public-Health Work in the Philip- PLUTO E SS Cg CO a ea er 13 Scientific Notes and News......--.---.-------------+ 15 University and Educational Notes..........-... 18 Discussion and Correspondence: Public Health and Medical Practice: Dr. W. Giuman TuHompson. Note on Inheritance in Swine: A. M. Carr- SAUNDERS. On Summaries of Recent Advances in Physics: PROFESSOR CARL BARU Si) esc ete aed oe a ue 18 Scientific Books: Deam on The Trees of Indiana: PRo- FESSOR GEORGE IX. NICHOLS......-...-----..------- 20 Notes on Meteorology and Climatology: Sky Brightness and Daylight [llumina- tion: Dr. C. Le Roy MBIsInGER............ 20 Special Articles: On Stereotropism as a Cause of Cell Degeneration and Death and on Means to Prolong the Life of the Cell: Dr. Leo Lors 22 The American Chemical Society: Dr. CHARLES USM RARSONS = eee 23 MSS. intended for publication and books, etc., intended for review should be sent to J. McKeen Cattell, Garrison-on-Hud- son, N. Y. THE SIGNIFICANCE OF CALCIUM FOR HIGHER GREEN PLANTS} In view of the time limit reasonably set for this paper, I shall not attempt to review the very extensive literature that in one way or another deals with the relation of calcium to the plant world, but shall content myself with pointing out certain of the land marks that occur at certain intervals along this oft-traveled road. And, at the beginning, I may as well give Jost’s summing up of the situation as he saw it in 1906, when he says, “We are bound to admit that its function has not yet been discovered.” To Salm-Horstmar*® seems to belong the credit of proving in 1856 that calcium is neces- sary for phanerogams and is distinctly not replaceable by magnesium. Almost -simultaneously in 1869 Adolph Mayer 4 and Raulin® showed that this rule was not of general application since certain non- chlorophyllose types were found to thrive without it. Mayer grew yeast normally in media from which calcium was lacking and Raulin did the same with Aspergillus. It remained for Molisch® in 1895 to demonstrate that not all green plants require calcium by cultivating 1Address of the Vice-President and Chairman of Section G, Botanical Sciences, American Asso- ciation for the Advancement of Science, Toronto, December, 1921. 2Jost, Ludwig, ‘‘ Lectures on Plant Physiology,’’ Gibson’s transl. Oxford, 1907: 85. 3Salm-Horstmar, ‘‘Versuche und _ Resultate liber die Nahrung der Pflanzen, Braunschweig.’’ 1856. 4Mayer, Adolph, ‘‘ Untersuchungen jber Alko- holgahrung.’’ 1869: 44. 5Raulin, Ann. d. Sci. Nat., V, Ser. I, 11: 224, 1869. _6 Molisch, Stizb. d. 733. 1895. Wien. Akad., Abt. I, 104: 2 SCIENCE certain alge in media from which this element was absent. In the meantime the distilled water problem had arisen to vex all physiologists and in their attempt to deal with it the zoologists had thrown some light on the calcium problem as well. Perhaps fundamental to all was the work of the English physiologist, Sydney Ringer, who, as a by-product of a long series of experiments, developed the generally-used normal saline solu- tion known by his name. While working on the characteristic effects produced by various salts in prolonging the life of organisms in water cultures, he noted the favorable action of eal- cium salts.. He observed that in distilled water calcium and other salts were extracted from fish placed in it, and records that epi- thelial and mucous cells seemed to become de- tached from the gills. In later experiments earried out on Tubifex, a freshwater worm, he noted that a far more striking change took place. After a time spent in water from which calcium salts were excluded, the worms dis- integrated. When to distilled water a calcium salt was added the worms not only lived but behaved very much as they did in river water.® His explanation of the fundamental causes here operating was couched in rather general language, but one gathers that he conceived them to be of a physico-chemical nature, and the seat of operation was thought to be in the cells of the animals. There is much in Ringer’s work to repay the student of general physi- ology. The fundamental features observed by him were confirmed by Herbst in 1900°, when he showed that in certain sea-urchin larve grown in sea water from which Ca was lacking, the epithelial tissues dissolved into their component cells. When these dissociated, but still living, elements were returned to calecium-containing sea water, they adhered again to each other at their points of contact., Herbst assumed that a Verbindungsmembran exists between the cells TRinger, Sydney, Journ. of Physiol. 4: IV. 1883. 8SRinger, Sydney, and Sainsbury, H., Journ. of Physiol., 16:4. 1894. 9 Herbst, C., Arch. Entwicklungsmech 9: 424. 1900. [Vou. LV. No. 1410. when Ca is present, that this membrane is dis- solved when Ca is lacking in the external me- dium, thus releasing the cells of the complex. When Ca is restored, this membrane is recen- stituted and again cements the cells at their points of contact. It is interesting to note in connection with these observations of Herbst those of Kniid- son,'° who found that in Pfeffer’s solution the root cap cells of corn and Canada field peas are sometimes sloughed and remain in the medium isolated but living for as long a period as seventy days or more. While it does not appear that a Ca shortage existed in these root cap eells, the possibility of such a shortage would be well worth investigating. In 1905 and 1906, while engaged in a study of the physiological properties of distilled water, the author, with the kindly aid of his colleague, Dr. Lyman G. Briggs, applied the method of electrical conductivity to the inves- tigation of ion changes in solutions in which seedlings were growing. It was observed that the conducting capacity of distilled water in which seedlings were grown increased, due, it was believed, chiefly to the leaching of ions trom the cells of the seedlings. It was noted furthermore that this leaching was checked when a small quantity of a Ca salt was added to the distilled water.11 The use of the conductivity method was extended by H. H. Bartlett and the author 2 to a study of ion changes taking place in distilled water and in solutions of calcium nitrate and magnesium nitrate planted with pea seedlings. Owing to the fact that the method as applied to this type of work had not then been eare- fully studied, more attention was given here to the method. The conclusion was reached that equilibrium concentrations of Ca and NO, ions in one case and of Mg and NO, ions in the other instance existed for peas below which the roots would leach ions into 10 Kniidson, L., Am. Journ. Bot., 6: 309. 11 True, Rodney H., Am. Journ. Bot., 1: 273. 1914. 12True, Rodney H., and Bartlett, Harley Harris, Bureau of Plant Industry, U. S. Dept. of Agri. Bull., 231: 1-36. 1912. 1919. 255- January 6, 1922] either solution, or into solutions containing both salts mixed in various proportions and above which the roots would absorb ions. It was shown that Ca differed essentially from Mg ions in being harmless in concentrations that proved fatal in the case of magnesium. The conductivity method was next applied to the problem of absorption by phanero- gamic seedlings from solutions of the ordinary nutrient salts; these being studied singly in various concentrations'® and mixed in a variety of proportions and concentrations.‘14 I will not try to deal here with the results gained beyond presenting a brief summary of such points as bear on the question now in hand. As a result of the study of several sorts of seedlings grown in solutions of single salts it may be said that in solutions of potassium and sodium salts no concentration was observed in which the seedlings were able to carry on sus- tained absorption, in the end yielding markedly more ions to the medium than they were able at any time to appropriate. In solutions of Ca and Mg salts there was a well defined equilibrium concentration below which the roots were not able to absorb and in these sub-minimal solutions ions leached out into the medium. In solutions stronger than this equilibrium concentration, absorption took place in greater or less measure. It appeared that Ca was more favorable gen- erally than Mg. At no concentration tried, the strongest being about 900 % 10—° gram norm. per liter, was there any evidence of injury. Where the concentration of Mg was raised in order to ascertain the maximum quantity of absorption, characteristic injury appeared and death more or less promptly thereafter. A similar injury appeared tardily in weaker solutions on longer duration. In mixtures again, absorption or leach de- pended on the presence of Ca or Mg ions. Again Ca in high proportion never brought injury. Mg injury appeared less often than 13True, Rodney H., and Bartlett, Harley Harris, Am. Journ. Bot., 2: 255-278. 1915. 14True, Rodney H., and Bartlett, Harley Harris, Am. Journ. Bot., 2: 311-323. 1915. 15True, Rodney H., and Bartlett, Harley Harris, Am. Journ. Bot., 3: 47-57. 1916. SCIENCE 3 in simple solutions. There was little evidence that any such thing as a very definite Ca-Mg ratio exists. In mixtures containing Ca and other nutrient ions, especially when all or a large proportion of the required ions were present, the total quantity of ions absorbed far exceeded the quantity of Ca ions present. This indicated that in such mixtures Ca ions in some way secured conditions that bring about the absorption of ions, that, offered in unmixed solutions, would be unabsorbed, or would cause an active leach of other ions from the plant cells. Thus we may fairly say that the presence of Ca ions in some way makes those absorbable that would otherwise be unabsorbable and en- ables the plant to retain ions that it would otherwise be unable to retain. The Ca ions may be truly said to make the others physi- ologically available to the plant. Stating this in terms of the soil, we may say that when the required minimum of Ca ions is not present in the soil solution other nutrient ions present are largely out of reach and such a deficient soil solution may finally leach mobilized nutri- ents from seedlings. If the required minimum of Ca ions is not present, other nutrient ions may be present in abundance but be physi- ologically unavailable because of the inability of the plant to appropriate them. Having thus far established the relation between Ca ions and the ability of the roots of the seedlings studied to retain ions gained by the mobilization of their reserves and to absorb others from the nutrient medium out- side them, let us turn to a somewhat more detailed study of this phase of calcium action. Analytical data have long since indicated a close chemical relation between the calcium- content of higher plants and the cell wall. The calcium content is relatively low in young meristematic tissue and increases greatly in those parts characterized by mature cell walls. A more critical study of cell walls by Fremy, Mangin, Bertrand and others has shown that these are by no means homogeneous structures, either chemically or structurally speaking, but consist characteristically of an outermost layer lying on the boundary line between adjoining cells and other layers lying between it and the 4 SCIENCE plasma membranes. This outermost boundary layer consists of a calcium salt of a weak organic acid known since work of Mangin as pectic acid. .Not only is this structure Ca pectate, but in cases other layers of similar chemical character occur in the thickening materials laid down in the more interior parts of the wall. This Ca pectate has been shown to be a stiff adhesive colloid that is formed when pectie acid meets Ca ions. According to authors from Fremy to Bertrand this acid appears when the neutral mother substance pectin is acted on by the enzyme pectase. Now in view of the observations of Mangin, Bertrand, and others, and latterly those of Sampson !© there seems to be considerable free- dom in the shifting of cell wal! materials into and out of the pectic acid condition, and when Ca ions are present, with the consequent ap- pearance of calcium pectate layers. These chemical shifts are frequently explicable only by relaying them back to internal irritable causes. They appear then in cases to be self- regulated chemical responses to stimuli, per- haps due in the first instance to external con- ditions, but in their immediate application, to internal causes. Thus Sampson finds in the abscission tissue of coleus leaves following the shock due to inflicted injury a change of more or less of the cellulose of cell wall tissues to pectic acid with a disappearance of calcium ions from the cells of the abscission layers and from their walls. Sampson favors the view that the change of cellulose into pectic acid arising from the irritation that sets in motion the train of abscission phenomena is responsible for the disappearance of Ca. Pectic acid being present greatly in excess of the quantity of Ca ions present can not be converted by these ions into the firm colloid, calcium pectate, but creates a thin, mechan- ically weak colloidal medium which mutually interdiffuses with the Ca ions and in _pro- portion as the pectic acid exceeds the Ca dilutes and removes it from its original seat. In this connection it should be noted as a general observation that the conversion of cellulose into pectose is a usual feature in 16Sampson, Homer C., Bot Gaz., 66: 32-53. 1918. [Vou. LV. No. 1410. aging cell walls (Sampson: 48). The shift from pectose to pectic acid follows easily. The change in firmness of fruits and vege- tables seen to follow the action of parasitic or of saprophytie fungi seems to be a related phenomenon. Here some form of Wiesner’s theory of the generation of organic acids which take possession of the Ca tied up in health in the Ca pectate layers seems likely to apply. With the removal of the Ca by acids formed directly or indirectly by fungi, the pectate layers become pectic acid or something closely akin. Since these substances lack mechanical strength, a slump of the tissues follows. i It was my good fortune to be able during the winter of 1919-20 to associate Dr. Sophia H. Eckerson of the University of Chicago with our work on this caleium problem, then being carried on in the U. 8. Department of Agriculture and with her permission I beg to refer here to some of her findings. She | grew seedlings of wheat, maize and white lupine in series of solutions closely paralleling others that were receiving attention, or had received attention in conductivity experiments. Dr. Eckerson applied the methods of micro- chemistry to the study of seedlings grown in potassium solutions in which Bartlett and the author had found a leaching of ions from the seedlings unto the solution. Sbe observed (1) that ions readily entered the cells of the roots, (2) that within twenty-four hours Ca ions began to diffuse out of the calcium pec- tate middle lamella, (3) K pectate was formed instead of the Ca salt and this substance being relatively soluble in water soon dissolved, (4) at this stage, sugars, amino-acids, and salts, chiefly Mg, diffused rapidly out of the roots. Thus we find Dr. Eckerson’s micro- chemical evidence giving us the stages of an event already found to exist by means of our grosser conductivity work. It was established beyond doubt that not only was the cell wall modified and in part dissolved by the replace- ment of Ca ions by K ions in the solution, but it was shown that the damage goes far more deep- ly into the cell. Analyses of the leach into dis- tilled water by lupine roots has already demon- strated to us that no less than two thirds of JANUARY 6, 1922] the materials yielded were organic and perhaps in large part non-electrolytes. Dr. Eckerson finds that the leach into K solutions are largely organic and non-electrolytic. These solutions must have come in considerable part from the cell contents. The permeability of the cell walls had been greatly modified, also the osmotic properties of the plasma membranes. These modifications were seen in the passing of materials from within outward. Dr. Heker- son tested the permeability in the opposite direction. Corn seedlings after five days in a KNO, solution were placed in a 1 per cent solution of copper sulphate. In one hour the Cu ions had penetrated all of the root tissue. Similar seedlings after five days in a Ca(NO,), solution showed the penetration of Cu ions only after twenty-four hours in a similar copper solution. This seems to make it clear that permeability for ingoing ions is also greatly increased by the changes that we have ‘described. Experimental work on Mg solutions showed that Mg pectate replaced Ca pectate in solu- tions of Mg salts. It is known that while Mg pectate is not soluble like K pectate and is less permeable it is slightly more permeable than the firmer Ca pectate- Dr. Hekerson found in addition to this that the fatal result repeatedly seen in our other work to come after a longer or shorter time to seedlings grown in Mg solutions of more than minimal concentration did not occur until the Ca of the middle lamella had been wholly replaced by Mg. When this had come to pass the cells died. We could perhaps imagine that sufficient uncaptured Mg ions were then free to penetrate the deeper structures of the cell'to bring about the fatal upset. The conclusion seems well founded that the integrity of the calcium pectate forming the middle lamella was maintained when a suffi- cient quantity of Ca ions was present in the culture solution and with it the normal reten- tion of its contents by the cell. When accord- ing to the laws of mass action this quantity of Ca ions fell below the equilibrium concen- tration, other kations present replaced the Ca in the colloid compound forming the middle dJamella. As a result of a long series of experi- SCIENCE 5 ments in various culture solutions, it may be said that no kation other than Ca has been found that can replace it in this relation with- out an injurious or fatal change seen in per- meability relations, or without the appearance sooner or later of other toxic response. Mg comes most nearly to replacing Ca, but fails, partly because of the greater permeability of its pectate, chiefly because of the ultimately toxie action of the Mg ions when they reach the deeper lying structures.. In view of what has been said, what are we justified in thinking concerning the phe- nomena that lie deeper than cell walls, what about the living content of the cell? I think we are justified in regarding the cell wall and the plasmal membranes that secrete it, and in closest contact with which it lies, as standing in the closest relation. Cell walls, except in specialized locations, are seldom decisive in determining what ions pass through them. They influence, as we have seen, up to a cer- tain quantity the ions that pass into them, through the chemical changes which take place in the walls themselves and thus far may be regarded as having a certain quasi-deter- mining influence. Beyond that, after chemical demands in the walls have been satisfied, more, deeply lying equilibria are concerned. As an ion-containing structure, the cell wall main- tains ion-equilibria subject to the laws of equilibria in colloids, with the living mem- branes with which it stands in most intimate chemical and biological contact. When ion equilibria in the wall are disturbed, this dis- turbance is transmitted to the equilibria of the protoplast that lays it down, modifies it and remains in closest relation to it. Hence it is not surprising that a drastic change in the very chemical composition of parts of the wall itself if continued should work through and perhaps profoundly affect the equilibria of the protoplasm. This elose relation of protoplasm and cell wall has already been seen in the eases of wall change initiated from within in response to irritation. When cells are melted apart by self-regulatory processes it seems hardly neces- sary to argue the intimate relation of wall change to protoplasm change. In response to 6 SCIENCE the formative laws governing the organism a dozen or more layers of cells surrounding the embryo of the wheat or maize are completely absorbed and in the end the innermost remain- ing walls of the ovary are literally cemented to the outer unabsorbed layer of the inner integument.!’ Here is emphatic control of cell walls by the life inhabiting them, control ex- erted chiefly through the ageney of the Ca-ion- equilibria of the tissues concerned. Finally this control in the wheat as in Herbst’s sea urchin embryos is shown by the fusing together of outer surfaces of cell walls. Here we seem to have clean cut instances to show how in the . formative processes the living material is able to command the structure it forms about itself. The outer walls of cells originally located far from each other are brought together by the solution of intervening structures. The sub- stances necessary for the formation of the cementing layer seem to be extruded from the protoplasm through the wall to the outside surfaces where they unite to form the coagulum seen. Perhaps the Ca ions and the pectase thrust through from the interior of the cell meet at its frontier the pectin which under enzyme action yields pectic acid in the pres- ence of the Ca ions. The product of such an occurrence would be seen in the cementing layer formed on the outside of each of the now neighboring cells. In conclusion, I should like to refer briefly to some of the more practical results that seem to flow from the considerations that have been here set forth. It appears that a certain quantity of Ca ions must be present in the medium for the main- tenance of the chemical and functional integ- rity of the cell wall, as well as the chemical and functional integrity of the deeper lying living parts of the cells of absorbing roots of higher green plants. When this is so main- tained, absorption takes place in the manner we are accustomed to call normal. When this necessary minimal supply of Ca ions in the medium is lacking, be it in soil solution, water culture, or sand culture, the function of absorption is upset and a more or less marked 17 True, R. H., Bot Gaz., 18: 212-226. 1983. [Vou. LV. No. 1410. leaching of ions from the plant follows. In the absence of this necessary minimum of Ca ions, the soil solution or culture solution may be rich in all other required ions, but these are useless to the plant. They are unabsorb- able. This brings us face to face with a con- dition of affairs in plant nutrition that has not been recognized and therefore has not been characterized. We may fairly say that Ca ions make physiologically available other equally indispensable nutrient ions. The prac- tical consequences that follow from this way of looking at the fertilizer problem have not thus far been realized. We learn why from earliest times civilizations have grown up on soils rich in limestone débris. We learn why agriculture has readily succeeded in some regions, not in others. We understand why, by the~use of lime, lands have been rendered capable of supporting largely increased popu- lations. We are now able to correlate these broad facts with those of cell physiology and to suggest perhaps not the calcium function sought by Jost, but one way perhaps of many in which higher green plants find caleium necessary. Ropney H. TRve. BoTaNnicaAL LABORATORY, UNIVERSITY OF PENNSYLVANIA. THE METHOD OF SCIENCE IN AGRI- CULTURE? To be practical has been the great goal of agricultural investigation from the beginning. It was entered upon with a practical purpose, and in a large degree practical results early came to the expectation of the farming people. Here was a type of science which was not working in the clouds for its own sake, but down in the dirt where the problems of farm- ing lay. It is fortunate that this has been so—that this close sympathy and this urge to meet the needs of the art have been felt so keenly. It has given life as well as purpose to our branch of science, and the wide extent to which its 1 Address of the Vice-president and Chairman of Section O—Agriculture, American Association for the Advancement of Science, Toronto, 1921. JANUARY 6, 1922] findings have been embraced and woven into the warp and woof of intelligent practice has been a constant source of stimulation. It makes even more imperative the call for steady prog- ress, not only in getting practical results for immediate use, but in securing deeper insight and larger intelligence about the common things of agriculture. The problems of agricultural science have be- come increasingly difficult. As the simpler things lying near the surface are gradually solved the underlying problems are seen to be more complex and difficult, taxing knowledge, skill, and imagination to increasing extent. Al- most have they come to call for that rare per- spicacity of the colored preacher who claimed to be able “to explain the unexplainable, to make known the unknowable, and to unscrew the inscrutable.” At all events, there is no more exacting field of experimental inquiry at the present time, and success in it is largely a matter of methods. It calls for a clear conception of the nature of problems and means for deriving the needed data for their solution. Steady advancement in some of the oldest and most common lines of agricultural inquiry rests more largely on the development of methods than on additional experiments or the accumulation of data on the conventional basis. It is the largest prob- lem in agricultural investigation at the pres- ent time, and it is so important that in a large degree it determines the progress of science. Fundamentally the method of science is the same, of course, in agriculture as in the sim- ple sciences. It makes no difference whether the subject is cornmeal or a chemical com- pound, the response of the growing plant or the law of falling bodies, the experimental method and requirements for the same grade of inquiry are the same. But in practice differ- ent types of effort are represented which vary with respect to their aim and the extent to which they require application of the scientific method. The difference is perhaps chiefly a quantitative one, of degree rather than kind, in conception of the end of inquiry rather than in general essentials which must be met. SCIENCE 7 In the simpler form of agricultural work, consisting of observations, tests and trials, the object may be a quite superficial one—the at- tempt merely to get a bit of information but one step removed from ordinary experience, such as the profit from use of a fertilizer, the larger crop from spraying, or the advantage of fall plowing. The information may be quite sufficient for the practical purposes of the time and place, but it can not be said to be very scientific, even if made with every care, for the work involves no study of exact relation- ships or tracing of the effect of conditions. In other cases observations, tests and trials may have a deeper purpose and form a step in in- vestigation. Similarly, experiments may be purely comparative, as showing the relative value of different fertilizers, or feeding stuffs or methods of tillage, without touching any basie fact; or they may be the means of secur- ing scientific facts in a piece of fundamental research. In the early stages of agricultural experi- mentation, before the problems had been or- ganized to show their nature and content, the work was naturally elementary, based largely on observations, comparative trials, and simple experiments which did not attempt to determine the underlying conditions or establish definite relationships. These types of work have given results which although largely empirical have been extremely useful. They have supplied a great fund of information on which to develop practical systems and to base further experi- mental inquiry. Although sufficient for one stage, they may be a poor means of progress in another. Hence they need to be replaced by more rigorous methods and by investigation which goes to the heart of the problems. It has been a somewhat prevalent mistake to assume that a complex agricultural problem could be solved in its practical aspects without a study of the principles and factors underlying it. This has led to the attempt to secure quick results by short cuts, and has bred overcon- fidence in the competence of simple comparative experiments. Reliance upon such time-honored procedure in certain classes of work has re- 8 SCIENCE sulted in the effort to refine them without go- ing outside of them or bringing to their sup- port more abstract types of inquiry which the changing status of the problems made neces- sary. This is not to overlook or to minimize in the least the increasing extent to which agri- cultural research has advanced into new fields or stages of inquiry, has developed improved methods and means of progress, and has been rewarded with results comparable with those in any line of investigation. Such effort has well illustrated the truth that in this branch of research as in other walks of life “we build the ladder by which we rise’’; and it argues for a type of experimental work which is critical of its methods and conclusions, seeking means for strengthening them and avoiding error or uncertainty. But certain types of work have not been marked by such growth of vision and method, with the result that they have become doubtful means of scientific progress at the present time. They continue to perpetuate their possible errors or inherent limitations after these have been disclosed. They are not fulfilling the expectations originally placed upon them; and while they have been useful up to a certain point, they are accumulating data after they have ceased to shed new light. The aim of science is simplicity, the dissolu- tion of complexities, and development of sim- ple facts and statements easily comprehended. Its method begins with a simplifying process, the analysis of problems to get at their real nature and content, the resolution of complex questions into parts which are sufficiently sim- ple and self-contained to be capable of study. Often this can be only partially done at the outset, but as the investigation proceeds and the real nature of the problem is disclosed, the segregating process becomes easier. In agricultural investigation this is difficult because of the many factors embraced, and in the more common types of work with plants and animals it has been followed to only a limited extent. More often the problem has been an involved and complex one from the start, em- bracing a wide range of phenomena, and in- [VoL. LV. No. 1410. stead of being simplified and reduced to smaller definite units as the work progressed, it has gathered bulk as it went, like a snow ball, until it has become such a complicated aggregation as to be well-nigh unworkable. Toc large for any intimate study, the mechanies and routine of it have oceupied the full time, and it has often degenerated into the broad accumulation of data. In constructive research data are secured for use, not for themselves. They are designed for a definite purpose—to solve a concrete prob- lem, to prove or disprove a conception or an idea, to disclose scientifie facts. The undirected collection of facts, whether they be observa- tions, results of experiments, or what not, leads to complexity, to an aggregation of data which must first be classified before being used in molding a scientifie explanation or a principle, or developing even practical information. Un- less there is a clear objective and an idea to guide in the acquiring of data, it may be a waste of time, an aimless, hopeless, dead effort. Its results may be chaotic, impossible of de- veloping a leading principle or an illuminating fact. There is still a quite prevalent idea that the ends of research may be satisfied by the aceu- mulation of data. It is a common expression in connection with the status of long-continued experiments that data are being accumulated. This is especially apt to be the case where such complex conditions and factors are in- volved that the results from year to year are confusing, and it is assumed that these uncon- trolled variables may be eliminated by long repetition. In such eases there is apt to be lack of a eritical attitude toward both the method and the data themselves, and hence the test of adequacy or competence is not applied. Data add to the accumulated fund of informa- tion when they are accurate, systematic and orderly, and so eapable of enabling deductions or fitting into other supplies which may he so used. Unless they respond to such a test it may well be questioned whether their aceumu- lation is profitable at this stage, when there is already such a large background. January 6, 1922] Simplification and definiteness of purpose give direction to the making of records and the gathering of data. All experimental in- quiry turns upon securing proof which is both accurate and adequate to the purpose. The method of science is the process of securing accuracy and precision in purposeful observa- tion, and the interpretation of the product. As has been said, it is “only a perfected apphi- cation of our human resources of observation and reflection.” The method is not a fixed thing but is con- tinually changing as progress makes possible. Science strives constantly after new ways of acquiring and proving facts which would other- wise not be known or but imperfectly so, and at the same time eliminating the personal factor. Apparatus and appliances are de- signed primarily to make possible the taking of observations which would otherwise not be feasible, or with equal accuracy. They there- fore enlarge the field of observation and in- crease precision. This applies of course to facilities and methods for agricultural inquiry such as field plats and cylinders, feeding appliances, special apparatus and other means for securing experi- mental data; and there is the same need of critical examination of these from time to time that there is of other facilities, to determine whether they are supplying proof which is accurate and sufficient, or to assess correctly what can and what can not be shown by such methods. The question is forcing itself upon the minds of many as to the adequacy of certain types of field experiments, as ordinarily conducted, to answer fundamental questions in plant nutri- tion and soil management. Large reliance has been placed on such experiments in the past, and data have been accumulated from them over long periods. The oldest series of fer- tilizer and rotation plats in this country runs baek over forty years; several others have been under way from twenty-five to thirty-five years. One station has some two thousand plats. These experiments have brought highly important practical results, and have marked SCIENCE 9 a definite step in agricultural inquiry. They have furnished a rich background of material and suggestion for more definitely directed studies. The question is whether they have reached their maximum and how far they are to be depended upon in making further ad- vances. It is now realized that many of these experi- ments contain inherent difficulties dating back to their beginning, which introduce a strong element of doubt in interpreting results. For one thing, most of the published reports fail to deseribe the soil except in the most general way, and lack information as to the condition and previous treatment of the field, indications of irregularity, ete. Again, the number of check plats is usually too small, and the same is true of the amount of replication of treat- ment. This may account for the different interpretations made by different persons from the same series of experiments. In few eases has the necessary number of checks and dupli- cates been worked out mathematically for such experiments, and where there is considerable variation in different parts of a field, averages may furnish a doubtful basis for measuring the effect of treatments. The number of questions “put to the soil and the plant” in a given plat experiment has usually been far too large. For example, the customary rotation-fertilizer experiment has often covered practically the whole range of soil fertility and plant nutrition. This wide range has limited the amount of replication practicable, and it has failed to reflect the discrimination in gathering data and_ the simplification of the problem dictated by the method of science. Such experiments have relied quite largely on what the field results themselves were inter- preted to show, primarily the crop returns. True, most of the later experiments have em- bodied plans for chemical, bacteriological, and other laboratory studies, but only to a limited extent have these been developed with the progress of the work so as to shed new light. The chemical studies have often become of a routine nature—analyses of the crops and of the soils at stated intervals, and the bacteri- ological studies by the technique developed 10 SCIENCE have largely failed to meet expectations in establishing correlations between soil treatment and bacterial flora. Such bacteriological ob- servations have now almost ceased in connec- tion with long continued field experiments. Reduced to such a simple collection of experi- mental data, the conduct of these extensive field experiments has often become largely a matter of routine. The niceties of plat work are observed, but the element of actual inquiry is deferred until many years have supplied their data. When that time is reached the publica- tion is more often a summary of field and and laboratory records than a critical analysis of the data and their actual meaning. At best the product is quite apt to consist of empirical observations rather than definite contributions to fundamental principles. We have not yet learned how to interpret, except superficially, the answer which the soil and the plant give as to just what has happened or what the ap- parent effects are due to. We have not yet learned how to examine a plot of soil so as to determine the changes occurring from time to time or brought about by a long continued system of treatment, or how to connect these changes with the response of the crop in a given season or period. Indeed, relatively little study is now given in such experiments to the soil itself, and only to a limited extent are underlying questions suggested by such experiments being given intensive study. In a word, the indications are that in the majority of cases the use is not being made of such long-time field experiments that ought to be made at this stage. They are rarely being simplified as time goes on, with a narrowing down to specific problems for intensive research, and they are not being increasingly supplemented by definitely directed laboratory study. They ought themselves to be progres- sive both in method and outlook. They ought to be used as the source of problems and mate- rial with which to make further and more pro- found inquiries. We can hardly fail to recognize the changed status at the present time, both as to practical requirements and the stage which has been reached in research and its problems. What is especially needed at this stage is the study of factors and their relationships rather than [Vou. LV. No. 1410. gross comparisons of one complex of conditions with other complexes. This will eall for the kind of team work which has been applied to the Rothamsted experiments,—the association of the chemist and the bacteriologist with the agronomist and soil expert, and the guidance of the statistician in both planning and inter- pretation. In many of the feeding experiments, also, the unchecked sources of possible error are too great for safety. The small number of animals in the lots gives large chances for the influence of individual variation. The conditions and frequency of weighing may also give mislead- ing indications. Some of the results of such experiments can be measured quite accurately, while others ean only be described. Some are not strictly experimental because they embody so many factors not under experimental control and whose probable variation can not be esti- mated. This is true, as Dr. H. H. Mitchell has recently shown, of the cost or financial returns in feeding. Such results lack per- manent value, and are likely to be given a prominence and an application which they are not entitled to. Experiments of this practical type have been useful in the past and there will be need for them in future. It is important that they occupy their proper place; but in the scheme for investigation they should not take the place of nutrition studies based on more permanent factors than prices and food combinations, or reliance rest too largely on them at this stage. Many important advancements have been made in animal nutrition which will find appli- cation in feeding practice and in showing the reason back of it. These disclose more clearly the functions to be discharged by food, the inherent qualities which account for the ob- served value or special properties of feeds, and the means of measuring the response of the animal with a high degree of accuracy. Such fundamental! investigations ought assuredly to be encouraged, not to the exclusion of but along with the type of feeding experiments which seek a more immediately practical end. There is still need to cultivate intelligent public appreciation of research conducted in accordance with the spirit and the method of JANUARY 6, 1922] science. It has been far easier to get funds for types of work which promise early contribu- tions to practice than those which dig deep and lay solid foundations to make the whole super- structure sure. The dependence of the former upon the latter needs to be recognized. The magnificent work of Armsby and _ his associates has been the admiration of the scien- tifie world, but in spite of its ultimate practical value, and especially in furthering investiga- tion, it had not within itself the elements of publicity, and was only vaguely understood. It never had an assured permanent income, and in that sense was obliged to live from hand to mouth. The loss this entailed is realized too late; and now the future of the work he so admirably started is under discussion. It would be a calamity if it were allowed to fall to the ground. The large amount of attention now being given to fundamental and searching inquiry on the soil, the conditions of plant growth, and related subjects, should not fail of mention in this connection, for it illustrates the develop- ment of insight into these problems. At no period has there been anything comparable to it. The results which are following from these iitensive studies amply justify the expectations of them as constructive means of progress. With all the facts clearly in mind, it is very important to take an account of stock in the more conventional lines of experiment; to study seriously the long list of the better experiments in order to determine what they have actually shown, what they are com- petent to show, and the lessons they teach in methods. By all means, let us garner in all the teachings of these field and other common types of experiment; let us profit by both the good and the bad experience, but let not the negative results be overlooked in searching for the more positive ones. Such experiments rep- resent large annual expenditures, and they occupy the time of a large body of workers. They express a confidence on which men are staking their efforts and their prospects. It is important to know the place which such experi- ments should occupy in future study and the manner in which they need to be supplemented. SCIENCE 11 This may be one of the fundamental lessons to be drawn from them, and may indicate that their most useful field is in supplementing laboratory studies, rather than the reverse as at present. In a public supported enterprise like agri- cultural investigation there must necessarily be a happy combination of effort representing different grades of intensity. Some problems or stages of them call more urgently for the full measure of the method of science than others, and it will be for the investigator to govern himself accordingly. But he can not fail to exercise a critical attitude toward all his work and his methods, or to exemplify in them the element of real progress. E. W. ALLEN U. S. DrpartMENT or AGRICULTURE THE CONCILIUM BIBLIOGRAPHICUM In the issue of Science of December 2, I called attention to the critical situation in which I found the Concilium Bibliographicum this summer, when I made a special trip to Zurich to investigate this situation for the National Research Council and the Rockefeller Founda- tion. On the occasion of this visit I proposed, after conferences with Mrs. Field (widow of the late Dr. H. H. Field), her business ad- visers, the chief of the technical staff of the Concilium, and official representatives of the Swiss Natural Science Association, which be- comes under Dr. Field’s will the legatee, under certain conditions, of Dr. Field’s financial in- terests in the Concilium, a plan for an imme- diate temporary reorganization of the Con- cilium to last until January 1, 1922, and a further plan for a provisional permanent re- organization to go into effect as from that date. The plan for temporary reorganization was put into effect immediately with Professor J. Strohl, of the Zoological Institute of the Uni- versity of Zurich, as acting director, without salary. The proposed provisional permanent reorganization—by “provisional permanent” I mean a well considered and fully supported organization to run on until international mat- 12 SCIENCE ters may indicate a desirable change—required, for putting into effect, the approval and defi- nite action of the Field estate, the Swiss Nat- ural Science Association, the National Re- search Council, and the Rockefeller Founda- tion. I obtained the formal agreement of the Field estate and Swiss Association before leaving Zurich and now the Research Council and the Rockefeller Foundation have signi- fied formal approval and taken the necessary definite action. This arrangement, which would require too much space to set out in detail here, provides for the control of the Coneilium, until some later arrangement for control by a satisfae- tory international board can be made, by a special Commission set up by the Swiss Nat- ural Science Association on which there shall be an official representative of the National Research Council whose acquiescence must be obtained for any major activity or expenditure of funds proposed by the commission. In addition, the National Research Council sets up a special committee on Concilium matters to advise and instruct the Council representa- tive on the Swiss Commission. This commit- tee of the Research Council is composed of Drs. R. M. Yerkes and L. R. Jones, and my- self as chairman. I am also appointed as the Council’s representative on the Swiss Commis- sion. To clear up the current obligations of the Coneilium and help maintain it during the next five years the Rockefeller Foundation has ap- priated and pledged to the National Research Council the following sums: Appropriated: to meet outstanding obligations, $15,000, and for maintenance during 1922, $20,000; pledged: for maintenance during 1923, $20,000; during 1924, $15,000; 1925, $10,000; 1926, $5,000, after which the Foundation assumes no fur- ther financial obligation for the Concilium. This means that the Concilium must arrive at a self- sustaining condition by January 1, 1927, or have found by then other philanthropic as- sistance. It is proposed that a staff composed of a director, a competent secretary-bookkeeper, [Von. LV. No. 1410. three trained technical assistants, three un- trained assistants, and the needed stenograph- ers and messengers, be arranged for at once. To maintain this staff and provide the neces- sary office expenses (postage, telegraph, tele- phone, fuel, lighting, ete.) the Concilium has not only the Rockefeller Foundation subven- tion but an annual subsidy of 5,000 franes (Swiss) a year from the Swiss Government and one of 1,000 franes (Swiss) from the Canton of Zurich. It has also whatever income ean be derived from sale of its bibliographic cards and books. It has a building of its own, well suited and fairly well equipped for its work. Thus the Concilium has, thanks to the gen- erous action of the Rockefeller Foundation, a new lease of life and Dr. Field’s noble and self-sacrificing work and his plans for imereas- ing the Concilium’s usefulness are not to go unregarded. Plans for extending the biblio- graphic work to other fields not now covered by it, and for a possible development of an abstracting system in addition to the present subject, title and author references, are under consideration. In this connection the manag- ing board of the Concilium will need and will welcome all the advice that can be given it. There should be, also, a greatly inereased list of subscribers to the cards and books issued by the Concilium. The National Research Council will undertake a campaign to add to the list of American subscribers, and the Di- rector (in Zurich) will institute a similar cam- paign in Europe. So I shall have occasion to ask the editor of Science for space in the near future for still another note about the Con- cilium. VERNON KELLOGG THE NATIONAL RESEARCH COUNCIL HENRY TURNER EDDY Tue death of Henry Turner Eddy occurred at his home in Minneapolis on December 11, 1921, due to an acute attack of pneumonia, after only a few days’ illness. Dr. Eddy was born at Stoughton, Mass., on June 9, 1844. He was the son of Henry Eddy, JANUARY 6, 1922] Yale ’32, Congregational minister, and Sarah Hayward (Torrey) Eddy, a graduate and teacher of mathematics at Mt. Holyoke Sem- inary. Dr. Eddy graduated from Yale A.B. 67, Ph.B. ’68, A.M. ’70, Hon. Se.D. 1912; Cornell, C.E. °70, Ph.D. ’72; and Centre College (Ky.) LL.D. He also studied at the University of Berlin and at the Sorbonne, Paris. He was instructor in Latin and mathematies at the University of Tennessee, 1868-9; assistant pro- fessor of mathematics and civil engineering, Cornell, 1869-73; adjutor professor mathe- matics, Princeton, 1873-4; professor of mathe- matics and astronomy and civil engineering, 1874-90, and dean of the academic faculty, 1874-7, at the University of Cincinnati, and was its president-elect in 1890. The following year he went to Rose Polytechnic Institute, Terre Haute, Indiana, as its president and remained there until 1894, when he resigned and went to the University of Minnesota as professor of engineering and mechanics, in the College of Engineering. In 1906 he elected dean of the Graduate School, which position he held until his retirement from university work in 1912 as professor and dean emeritus. After his retirement from teaching at 68 years of age, Dr. Eddy formed an association with Mr. C. A. P. Turner, consulting engineer, of Minneapolis, and spent several happy years in mathematical researches concerning the properties and stresses in reinforced concrete floor slabs, the results of which he published in collaboration with Mr. Turner. Dr. Eddy was one of the first to take up the subject of graphical statics and in 1878 he published his well-known “Researches in Graphical Staties” ; this was followed in 1879 by a treatise on “Thermodynamics”; previously to this he had published a mathematical text on “Analytical Geometry.” Dr. Eddy was a member of numerous scien- tific societies of varied interest, including the American Association for the Advancement of Science, of which he was one of the vice- presidents in 1884; the American Philosophical Society, the American Mathematical Society, the American Physical Society, and the Soci- Was SCIENCE 13 ety for the Promotion of Engineering Educa- tion, of which he was an honored past presi- dent. He was a man of versatile attainments, as shown by his many valuable contributions to the various societies to which he belonged. Dr. Eddy was a man of quiet, scholarly tastes, genial in his intercourse and always an inspiration to his associates. He was married in 1870 to Sebella Elizabeth Taylor, of New Haven, Conn., who died on September 5, 1921, only three months prior to the death of her husband. The surviving children are: Horace T. Eddy, Omaha; Mrs. Charles F. Keyes, Minneapolis; Mrs. Clive Hastings, Atchison, Kan.; Mrs. Charles H. Patek, Minneapolis, and Mrs. J. B. Frear, Buffalo, N. Y. The faculty of the Graduate School of the University of Minnesota has placed on its records the following tribute: Henry Turner Eddy, Ph.D., LL.D., died on December 11, 1921, at the age of 77 years. In his death the faculty of the University has lost one of its most eminent and honored members. As professor of mathematics and mechanics from 1894 to 1905, as the first dean of the Gradu- ate School from 1906 to 1912, and as professor emeritus since 1912, Dr. Eddy was a distinguished associate whom the faculty was proud to own as a colleague. His ability as a mathematician won him an international reputation and his high general scholarship and Christian character en- deared him to all with whom he came in contact. He was an educator of the highest type, an inspiration to his students and intimate associates, and a wise, sympathetic counsellor in the faculty conferences. This faculty would express its heartfelt sym- pathy with the family, in the faith that God has given the departed a rich reward; and the assur- ance that it cherishes the memory of a noble life that has left a precious and imperishable heritage. Ay aie SCIENTIFIC EVENTS THE STERLING HALL OF MEDICINE OF YALE UNIVERSITY Tur Yale Corporation and the Sterling Trustees will appropriate from the Sterling funds the amount of $1,320,000 for the erec- tion of a new and modern building to be known as the Sterling Hall of Medicine. With this 14 SCIENCE purpose in view the university has recently acquired most of the city block bounded by Cedar, Broad, Palmer and Rose streets where the dispensary now stands, opposite the New Haven Hospital. The Sterling Hall of Medicine will have a central entrance and building at the corner of Broad and Cedar streets containing a library of approximately 12,000 volumes, an amphi- theater with a seating capacity of about 250, the administrative offices of the dean and registrar, a room for faculty use, students’ common room, and on the third and fourth floors single rooms and suites for unmarried instructors in the pre-clinical subjects. Ex- tending along Broad street a wing will provide space and laboratories on the first and second floors for the department of physical physi- ology, with like provision on the third and fourth floors for the department of pharma- cology and toxicology. A similar wing facing the Brady Laboratory and the administration building of the New Haven Hospital on Cedar street will provide on the first and second floors space for the department of chemical physiology, the two upper floors being given over to laboratory space for anatomy. Beyond the central structure will be an animal house where various types of domestic animals will be kept for experimentation and _ observation, these being available for all departments of the university located in the vicinity of the hos- pital. The power house, designed on the unit basis with stack and bunkers of sufficient capacity for future requirements of the hos- pital and the school, will be situated at the corner opposite to the central building. Day & Klauder, of Philadelphia, are the architects of the Sterling Hall of Medicine. One of the features of this building will be the provision for future expansion as the needs of the School of Medicine require and _ its finances permit. This means the ultimate completion of the quadrangle. One of the features of the expansion of the Yale School of Medicine has been its closer affiliation with the New Haven Hospital and the Dispensary. In addition the finances of the hospital have been placed on a stronger footing and the physical rehabilitation has been begun. [ Vou. LV. No. 1410. Placing the faculty of the Medical School on a university basis of full time organization in the clinical service has been an important step in the consolidation of the work of the Med- ical School and the New Haven Hospital. With the beginning of the fall term of the present year all four of the clinical departments of the School of Medicine have been placed on such a basis. THE CROP PROTECTION INSTITUTE THE first annual meeting of the Crop Protec- tion Institute will be held at Rochester, N. Y., in connection with the New York Horticultural Society’s meeting. A dinner will be provided on January 12 at the Rochester Chamber of Commeree. Among those taking part on the program will be Professor W. C. O’Kane of the New Hampshire Agricultural Experiment Station, and chairman of the board of governors of the Crop Protection Institute, who will speak on the ideals of the institute; Dr. L. R. Jones, chairman of the Division of Biology and Agri- culture of the National Research Council, whose theme will be the ‘Relation of Environ- ment to Disease and Disease Resistance of Plants”; Dr. R. W. Thatcher, director of the New York Agricultural Experiment Station, who will speak informally on the “Need for Investigations in the Chemistry of Insecticides and Fungicides.” From the standpoint of industry, Mr. G. R. Cushman, of the General Chemical Company, will speak briefly. Pro- fessor P. J. Parrott, of the New York Agricultural Experiment Station, will also probably speak on ‘Paradichlorobenzene.” The Crop Protection Institute, which has a membership of about three hundred and fifty prominent entomologists, plant patholo- gists, agricultural chemists and manufacturers of insecticides and fungicides and others inter- ested in the protection of all kinds of crops, was organized only a year ago, under the auspices of the National Research Council of Washington, D. C. The purpose of the insti- tute is not to duplicate the work of individuals or other organizations, but to bring about closer cooperation of effort, to strengthen the weak places and develop needed investigations that are not being pursued by other agencies. JANUARY 6, 1922] Those interested, though not members, are invited to attend. PUBLIC HEALTH WORK IN THE PHILIP- PINES The Rockefeller Foundation announces that the International Health Board has accepted an invitation to cooperate in carrying out the general scheme of reorganization of the public health activities of the Philippine Islands, which was recently made publie by the presi- dent of the Senate, Manuel Queson. The participation of the board will consist in lending the services of certain members of its staff for a limited period and providing specialists as consultants and assists to Philip- pine government officials in various lines of public-health work. The broad program which the government has adopted for improving health conditions includes the ultimate con- solidation of all health functions in a single department of health to correspond with the ministry of health in other countries. Among the persons whose services will be furnished by the Rockefeller Foundation is an assistant to the dean of the College of Medi- cine and Surgery of the University of the Philippines, who will assist in developing the medical school and will give particular atten- tion to the problem of providing post-graduate instruction in public health, so that the health workers so urgently needed in the Philippine Islands may be trained locally. Fellowships for advanced study in the United States will be offered by the board to exceptionally promising and _ well-qualified young Filipinos, to fit them for the more important administrative and technical posi- tions in the public-health service and for posi- tions as instructors in the College of Medicine and Surgery and as teachers of nursing. Existing facilities for the training of nurses are said to be inadequate to meet the demand for hospital and private service. The nursing situation will therefore be studied and special attention given to training women in public- health nursing. An assistant will be provided for the director of the Bureau of Science, who will be expected to advise in the further development of that bureau. The Biological Laboratory, SCIENCE 15 which is one department of the Bureau of Science, is to be expanded in order to serve as the central public-health laboratory of the Philippines, with local laboratories in the provinces. Dr. Victor G. Heiser, director for the East of the International Health Board, and for- merly director of health for the Philippine Islands, who is now in New York, will go to Manila in February to assist in carrying out the program. SCIENTIFIC NOTES AND NEWS Tue meeting of the American Association for the Advancement of Science and of the associated scientific societies held at Toronto from December 27 to 31 was notable both for the scientifie programs and for the admirable arrangements made for the entertainment of members. The total registration was over 1,800, which is about twice the number antici- pated. Large audiences were present at the general sessions at which Dr. L. O. Howard gave the address of the retiring president and Professor William Bateson spoke. The Uni- versity of Toronto conferred its honorary doc- torate of science on Professor Bateson, Dr. Howard and Professor E. H. Moore, the presi- dent of the association. We hope to publish the permanent seeretary’s report of the meet- ing in the next issue of Science. Officers were elected as follows: President J. Playfair MeMurrich, professor of anatomy in the University of Toronto. Vice-presidents and Chairmen of the Sections Section A (Mathematics): G. A. Miller, Uni- versity of Illinois. Seetion B (Physies) : Harvard University. Section C (Chemistry) : sity of Toronto. Section E (Geology and Geography) : P. Berkey, Columbia University. Section F (Zoological Sciences) : Metealf, Oberlin College. Section G (Botany): Francis E. Lloyd, McGill University. Seetion I (Psychology): leyan University. Section K (Social and Economie Henry 8. Graves, Washington, D. C. Frederick A. Saunders, W. Lash Miller, Univer- Charles Maynard M. Raymond Dodge, Wes- Sciences): 16 SCIENCE Section L (Historical and Philological Sciences) : William A. Locy, Northwestern University. Section M (Engineering): George F. Sivain, Harvard University. Section N (Medical Sciences) : body, Harvard Medical School. Section O (Agriculture): R. W. Thatcher, Uni- versity of Minnesota. Francis W. Pea- Proressor W. M. WHEELER, of the Bussey Institution, Harvard University, was elected president of the American Society of Nat- uralists at its meeting held last week at Toronto. Proressor Henry B. Warp, of the Univer- sity of Illinois, who for twenty-seven years has been secretary of the Society of Sigma Xi, and has been in large measure responsible for its development during this period, was elected president at the meeting held at Toronto dur- ing Christmas week. Professor Edward Ellery, professor of chemistry and dean of the faculty at Union College, was elected to suc- ceed Professor Ward as secretary. Av the meeting of the Geological Society of America and the affiliated societies held last week at Amherst, a silver loving cup was pre- sented to Professor B. Kk. Emerson, who be- came head of the department of geology at Amherst College in 1870. The presentation was made by Dr. John M. Clarke, whose ad- dress we hope to print. Dr. W. W. Keen, of Philadelphia, has been elected a foreign associate of the French Academy of Medicine. Dr. C. Lioyp Morean, D.Se., F.R.S., late principal and emeritus professor of the Uni- versity of Bristol, was presented on December 2 with his portrait, a gift from friends, col- leagues and students, both past and present. The portrait was painted by Mx. Anning-Bell. Dr. J. G. Avami, lately professor of path- ology in McGill University Medical School and now vice-chancellor of Liverpool University, has. been admitted to the freedom of the City of London. Mr. Aurrep D. Frinn, secretary of the United Engineering Society and Engineering Foundation and chairman of the Division of [Vou. LV. No. 1410. Engineering, National Research Council, gave an address on “Engineering, research and vicarious tests” at the meeting of the American Philosophical Society on January 6. Dr. Auten IX. Krause, associate professor of medicine, Johns Hopkins University, will deliver the fifth Harvey Society Lecture at the New York Academy of Medicine on Saturday evening, January 21. His subject will be “Ex perimental Studies on Tubereulous Infection.” Dr. CHartes Movursu, professor of chem- istry at the Collége de France, who is now in this country as technical adviser to the French Mission for Disarmament, delivered an ad- dress on “Natural gases, with special reference to the rare gases” at Columbia University on December 20. An International Society of Medical Hy- drology was founded at a meeting of the Royal Society of Medicine on December 9, with a prehminary membership of 71 medical men from 13 countries. Dr. Fortescue Fox was elected president. Tur third congress of the International So- ciety of the History of Medicine will be held in London from July 17 to 22 under the presi- deney of Sir Norman Moore. Dr. Apotr Lorenz, the Vienna orthopedic surgeon, has been granted a license to practice medicine in the State of New York. The Board of Regents of the University of the State of New York at a recent meeting voted unani- mously to indorse the copy of a license issued to Dr. Lorenz in October, 1902, by the Illinois State Board of Health. On Tuesday afternoons, beginning on Jan- uary 17, the following lectures will be given before the Royal Institution: Two lectures by Dr. F. H. A. Marshall on “Physiology as ap- plied to agriculture’; three by Professor H. H. Turner on “Variable stars”; five by Sir Arthur Keith on “Anthropological problems of the British Empire,” and two by Dr. J. W. Evans on “Earth movements.” We learn from The Observatory that the Royal Astronomical Observatory, Florence, Italy, will henceforth Arcetri, devote its JANUARY 6, 1922] activities to astrophysics, and it will therefore in future be ealled the Royal Astrophysical Observatory. Professor Antonio Abetti re- tired from the acting directorship last June on account of age, and has been succeeded by his son, Professor Giorgio Abetti. Anpert W. Situ, formerly dean of Sibley College and recently acting-president of Cor- nell University, is now consulting engineer with the firm of Henry R. Kent & Co. of New York and Boston. Morsz B. Prineur, chief engineer for the Eastman Kodak Company, has been appointed city manager of Smyrna, Fla. Dr. Kart Lanpsterner, formerly of Vienna and now of The Hague, has been appointed on the scientific staff of the Rockefeller Institute for Medical Research, New York. Dr. Howarp 8. Resp, professor of plant physiology at the Graduate School of Tropical Agriculture and Citrus Experiment Station, University of California, is spending part of his sabbatical year in Mexico, Central America and the West Indies. He will return about Mareh 1. Dr. W. J. Humpureys, professor of mete- orological physics, United States Weather Bureau, lectured on ‘“‘Fogs and Clouds” before the Franklin Institute, Philadelphia, on Jan- uary 5. Proressor Grorce C. Wurippue’s book on “Vital Statisties,’ published in 1919, has been translated into Japanese and is published in Tokyo. Tue American Astronomical Society will hold its next meeting at Yerkes Observatory, Williams Bay, Wis., the week following next Labor Day. The next winter meeting will be held at Vassar College, Poughkeepsie, N. Y., and the summer meeting of 1923 probably at the Mount Wilson Observatory, near Pasa- dena, Cal. Tue Washington Academy of Sciences has compiled a tentative list of one hundred popu- lar books in seience. The list, which was edited by Dr. R. B. Sosman, corresponding secretary, was compiled at the request of Dr. George F. SCIENCE 17 Bowerman, librarian of the Publie Library of the District of Columbia. The standard set up for the books is that they must be both read- able and scientifically accurate. The subjects covered are anthropology and _ physiology, heredity, botany, animals, birds and_ insects, geology, meteorology, minerals, astronomy, chemistry, physics, mathematies and history of science. The faculty of Mercer University on Decem- ber 14, 1921, passed the following resolutions: Resolved, That the Faculty of Mercer Univer- sity favor the plan of placing the scientific bureaus of the United States government under the jurisdiction of a board of governors, with the view of unifying all governmental science and developing it to the highest possible efficiency, by affording scientific workers permanent tenure of office, greater freedom in investigation, non- interference through politics, and adequate salaries. Resolved, That a majority, at least, of the said board of governors be appointed by the American Association for the Advancement of Science, in order that the most able executives in the various fields of science may be appointed to such an important governing board, and that its per- sonnel be free from political influences. We learn from the Journal of the American Medical Association that Senator Wadsworth, of New York, has presented a bill in congress providing for an appropriation of $143,032 to meet the increased cost of land needed adjoin- ing the Walter Reed General Hospital in Washington. On this real estate it is proposed to erect buildings for the medical museum and library and the Army medical school. At the request of Surgeon General Ireland, Congress appropriated two years ago the sum _ of $350,000 for the purchase of this land, but since the negotiations for the taking over of the property have been under way it has been discovered that it could not be bought at this figure. A request for more money from Con- gress, therefore, was necessary. Immediate purchase is urged both by Senator Wads- worth, chairman of the Senate committee on military affairs, and Surgeon General Ireland, because it is believed that the land will increase in price in the future and the govern- ment should act now as a matter of economy. 18 SCIENCE The Army medical school is to be the first building erected at a cost of $500,000. THE returns of the British registrar-general for the quarter ending September, 1921, have been issued. They show that in England and Wales there were 214,850 births, which were 15,017 fewer than in the third quarter of 1920. The rate was 22.5 a year for each thousand of population. The deaths numbered 99,134, and were 9,937 fewer than in the preceding quarter, but 5,444 more than in the third quarter of 1920. The rate was 10.4 per thousand. The infant mortality was 83 per thousand births, being 15 below the average of the ten preceding third quarters. UNIVERSITY AND EDUCATIONAL NOTES Aw endowment of $110,000 for the depart- ment of art as applied to medicine has been given to the Johns Hopkins Medical School. The gift, by an anonymous donor, was trans- mitted to the trustees through Dr. Thomas S. Cullen. This department has been established since 1911, with Max Brodel at its head, the same anonymous donor having provided funds for its maintenance. Work has begun at Pomona College, Clare- mont, California, on a new chemistry building to cost nearly $250,000. The building will be of reinforced concrete with tile roof and mas- sive tower to conform with the accepted archi- tecture of the college campus. It will provide facilities in undergraduate and research work for 600 students. DartmoutTH COLLEGE has received a bequest of $5,000 from the late Judge Ira A. Abbott for the increase of the salaries of professors. Atv a meeting held on December 9, the board of regents of the University of Michigan voted to merge the homeopathic medical school with the medical school of the university. The ex- pense for the maintenance of the homeopathic school was $47,000 last year and there were seven graduates. Dr. Georce J. Hever, associate professor of surgery at the Johns Hopkins Medical School, has accepted the professorship of surgery in [Vou. LV. No. 1410. the Medical College of the University of Cin- cinnati. By accepting the post, he will auto- matically become chief of the surgical service of the Cincinnati General Hospital. Proressor Henry JorDANn has recently been made head of the department of electrical engineering at Colorado Agricultural College at Fort Collins. DISCUSSION AND CORRESPOND- ENCE PUBLIC HEALTH AND MEDICAL PRACTICE THE article “Education in Relation to Public Health and Medical Practice, by Professor S. J. Holmes, which appears in the issue of Science of November 25, 1921, is a highly interesting presentation of a subject which will merit discussion. Its author, however, falls into the common error of those eriticizing an- other profession than their own, of somewhat overstating the case and taking a too pessimis- tie view of a situation which is constantly being bettered, as, for instance, when he states that “a large part of the time of well-trained med- ical men is simply wasted in a kind of desul- tory practice from which their patients secure no permanent benefit,’ and that “humanity comes very far short of getting out of the medical profession the aid which it is capable of furnishing.” As a matter of fact, there are 106,000,000 persons in this country the vast majority of whom are perfectly well cared for medically. The death rate in our larger cities is constantly fallmg and there are increasing numbers of organizations devoted exclusively to the study and promulgation of public sanitation which are maintained by physicians who furnish gratuitous time and energy without stint. The laboratory tests which the author enumerates are, for the most part, now taught to every third year medical student and the more elaborate tests of this order are not required by more than four or five per cent. of all patients. The author further comments upon the ignorance of sanitation among our immigrants (which, of course, is deplorable) and writes that the “uninstructed foreigner” “fails to get competent aid when he is ill.” JANUARY 6, 1922] New York City has admittedly the largest and most varied immigrant population of the country. It has, however, many competent foreign born physicians who care for their own kind, besides many hospitals devoted to the care of special foreign groups, like the Italian, French and Lenox Hill (formerly the German Hospitals, besides several others de- voted to Yiddish patients. The Health Board of the city is most active and efficient, together with many other agencies, both public and private, in raising the health standards among the foreign born, and special health lectures are given in different languages in the public schools. The infant mortality of the entire city has never been so low as in the past few years and is a source of amazement to distin- guished foreign members of the medical pro- fession who come here. The comments of the author upon the fraudulent medical cults with which the country abounds are well made and nowhere to be better ilustrated than in his own quack-beridden state of California, but it is unfair to shift any of the burden of this upon an assumed negligence of the medical profes- sion, which wages constant warfare against it in its county, state, and national associations, only to be defeated time and again by lay legislators. There are too many other opera- tive factors, notably the sensational press, the general restlessness of the times, and indeed the multiplicity of experimental medical tests them- selves, which lead patients to compare experi- ences with one another and seek all manner of examinations whether they need them or not, in order to get their money’s worth out of what the author characterizes as “our commercialized system of private practice’—which remark leads one to wonder whether he knows the average income of the legitimate medical prac- titioner. W. Gipman THOMPSON 142 E. 62ND Sr., New York City NOTE ON INHERITANCE IN SWINE Tue Berkshire pig is distinguished by the following characters: (1) erect ears, (2) uni- form black coat with the exception of “six white points” which oceur on the head, on each SCIENCE 19 foot and on the tail, (3) a short “dished” nose, and (4) a somewhat short and broad body. The Large Black pig is distinguished by (1) “flop” ears, (2) uniform black coat without any white, (3) nose not “dished” and of moderate length, and (4) a long body, some- what narrower than that of the Berkshire. On a farm near Oxford, pure-bred Large Black boars have for some years been crossed with pure-bred Berkshire sows. About a dozen lit- ters have come under the observation of the author of this note and the F! generation has invariably shown (1) erect ears, (2) uniform black coat without any white, and (3 & 4) in- termediate features as regards nose and shape of body. Latterly, the reciprocal cross has been made (Berkshire boar and Large Black sow) and the ‘F! generation shows (1) erect ears and (3 & 4) intermediate characters. But as regards (2) there has appeared a gradation from pure black to spotted pigs in which the whole coat is fairly evenly divided into black and white patches. At present the numbers are small, but it would appear that the gradation is not uniform between the pure black and the spotted condition. There appear to be three classes—pure black, black with the six Berk- shire points and spotted. Further it is notice- able that the true spotted pigs have hitherto all been boars, though pure black boars have also appeared. It may be suggested that erect ear is a simple dominant. The coat color and other features clearly require considerable analysis. It may he that sex linkage is in some way concerned in coloration. A. M. Carr-SaunpErs DEPARTMENT OF COMPARATIVE ANATOMY, OXFORD ON SUMMARIES OF RECENT ADVANCES IN PHYSICS Tue National Research Council has recently issued two valuable pamphlets on the Quantum theory (The Quantum Theory, E. P. Adams, 1920, No. 5; Atomie Structure, David L. Web- ster, Leigh Page, 1921, No. 14). Similar con- tributions on other live topies have come, from time to time, from the Bureau of Standards. I wish to express my personal appreciation of 20 SCIENCE this admirable work and hope that more is in store for us. We, who are about to be shelved, used to live in this country, peacefully under the con- stitution and we were quite happy in our sim- plicity. One day a man by the name of Hin- stein came along and mixed that constitution up. We were told that it had long been an anti- quated document anyway. ‘There were diffi- culties, but eventually we managed to fit in; for they had left us, at least, with the doctrine of energy. Now, I read that the classical law of the conservation of energy must also go, that at best it is only statistical like the second law of thermodynamics. Truly these young bloods are Balkanizing the whole of physics and our ancient constitution has gone the way of the mark. Cart Barus Brown UNIVERSITY SCIENTIFIC BOOKS Trees of Indiana. By Cuarues C. Dram, State Forester of Indiana. First revised edition. 317 pages; 137 plates. Publica- tion 13 of the Department of Conservation, State of Indiana. April, 1921. Tue forerunner of the present work, under the same title and by the same author, was issued in 1911. So great was the demand for that book that the edition of 10,000 copies lasted only three years, while a second edition, printed in 1919, was exhausted within five days of publication. The present “first revised edi- tion” is fundamentally a new work, with new illustrations and completely rewritten text. During the past decade numerous “tree books” have been issued by various state or- ganizations, but it is doubtful if any of these contain more original matter than the present work. Certainly none of them contain more local color. The botanical descriptions are based on Indiana material, and the illustra- tions are photographed from Indiana speci- mens, while the distributional peculiarities in Indiana of the various species are treated in gratifying detail. It is in this latter particular, perhaps more than any other, that the book will prove of service to the general botanical [Vou. LV. No. 1410. public. In the course of his studies of the flora of Indiana, the author, within the last ten years, has traveled more than 27,000 miles, by auto, and has visited every county and tra- versed practically every township in the state. As a result he is able to present, at first hand, a wealth of detail in regard to local tree dis- tribution, not to mention various other observa- tions which bespeak intimate familiarity with the tree flora of the state. The attention given to the ecological relations of the different spe- cies is especially worthy of note, and this feature alone will recommend the work to a wide cirele of readers. Grorce E. NIcHOLS NOTES ON METEOROLOGY AND CLIMATOLOGY SKY BRIGHTNESS AND DAYLIGHT ILLUMI- NATION What is the relation between sky brightness and the electric light load carried by the central lighting plant? How much sky-light will be cut off by a row of buildings on the opposite side of the street These questions and many others may be solved by studies of the brightness of the sky and daylight illumination such as have been carried out by Dr. H. H. Kimball, of the Weather Bureau at Washington. The prac- tical utility of such investigations is attested by the interest shown by illuminating engi- neers, architects and electrical engineers. A paper, recently appearing in the Monthly Weather Review,! summarizes with considera- ble detail a report submitted to the [luminat- ing Engineering Society, of whose committee on sky brightness Dr. Kimball is chairman. The observational program which has been followed in making the measurements has been to make photometric readings with a Sharp- Millar photometer at elevations of 2°, 15°, 50°, 45°, 60°, 75° and 90° above the horizon on ver- tical circles at azimuth intervals of 45° begin- ning with the sun’s vertical and proceeding half-way around the horizon. Only half the sky is measured because it is assumed that the 1 Kimball, H. H., and Hand, I. R.: Sky bright- ness and daylight illumination Sept., 1921, pp. 481-488. measurements. JANUARY 6, 1922] brightness distribution is symmetrical about a vertical semicirele passing through the sun. Such measurements were made on days that were (1) perfectly clear, (2) overcast with thin clouds or dense haze, (3) completely overeast with clouds or dense fog, so that neither sun nor blue sky could be seen, (4) overeast with clouds from which rain or snow was falling, and (5) partly overcast, in an irregular manner. On clear days it was found that the sky brightness at Washington has somewhat the following distribution: The brightest part of the sky is, of course, that close about the sun. The darkest part is that in the solar vertical about 90° distant from the sun. In general, the sky inereases in brightness toward the horizon, although there is a “dark valley” ex- tending from the dark point in the solar ver- tical to a point about midway between the sun and the horizon. This distribution agrees closely with that observed by Dorno at Davos, Switzerland, except that the Swiss sky is brighter than that at Washington. This differ- ence in brightness is probably the result of secondary reflection of light from the Alpine snows. In comparison with observations made at Chicago University and on the roof of the Federal Building in “Loop” district of Chi- eago, it was found that the distribution there is much the same, except that the horizon opposite the sun is darker at Chicago than at Washington. This is attributed to smoke, from which the Washington atmosphere is par- ticularly free. The brightest type of sky measured at Washington is that completely overcast with thin clouds or dense haze. With clouds from which rain is falling, the distribution is about the same as with thin clouds, but its intensity is only half as great. Measurements of the illumination on _ hori- zontal and vertical surfaces were made at Washington and at the two Chicago stations mentioned above. It was found with respect to the variations with change of solar altitude that the illumination on horizontal surfaces inereased markedly with inerease of solar alti- tude; but in the case of illumination on vertical surfaces the difference between a surface facing SCIENCE 21 the sun and one oppositely directed grows less with increase of solar altitude. Moreover, The daylight illumination on a vertical surface facing opposite the sun, and with an unobstructed exposure to the sky, in the Loop district of Chi- cago under summer conditions as regards smoke, averages only about two thirds as intense as illumination on a similarly exposed surface at Washington under similar sky conditions with respect to clouds, except when the sun is more than 40° above the horizon and the sky is clear. The equation, Tan @ = h/wx/1/7 + tana), is given for computing the shading effect of buildings on the opposite side of the street. @ is the angular height of a building as seen from the center of a window across the street, the width of the street being w. The horizontal angle between a normal to the window and a line joining a point p on the building opposite is #, and h is the height of the obstructing building above the point p. The author gives a table showing the relation between x and @ for various values of h/w. Attention is directed to the fact that the horizon is the most effective illuminating agent for vertical sur- faces, hence buildings and other objects on the horizon are the most serious obstacles in the question of illuminating rooms through ver- tically placed windows, especially with a clear sky. Two interesting examples of the relation between electric light load and sky brightness are given. At Washington, on July 15 and 29, 1921, there occurred thunderstorms about 2:30 p.m. and noon, respectively. On the former occasion, the daylight intensity fell rather quickly to about one foot-candle and the sudden increase in eleetrie light load caused by the nearly simultaneous turning on of thou- sands of electric lights was sufficient to put the power plant out of commission. The sta- tistician for the company states that During the day in the business section a sudden increase in current consumption occurs when the day light illumination intensity falls below 1,500 foot-candles. The lower the intensity, the higher the current consumption, but fluctuations in intensity above 1,800 foot-candles have only a negligible effect. 22 SCIENCE It appears that some arrangement whereby power companies supplying large cities could have recourse to observations of daylight illumination, especially during the thunder- storm season, would be of decided benefit to them, for the falling off of this illumination would afford an index as to the proper time to prepare to supply additional current. This sketch is sufficient to indicate the char- acter of the important work being done by Dr. Kimball and to suggest some of the indus- trial benefits to be derived from the study of daylight under various types of cloudy and smoky sky. C. Le Roy Meisincer WasHINGTON, D. C. ON STEREOTROPISM AS A CAUSE OF CELL DEGENERATION AND DEATH, AND ON MEANS TO PROLONG THE LIFE OF CELLS In former investigations we have shown ! 2 that amoeboeytes of Limulus have the tendency to move and to spread out in contact with solid bodies. We thus found another instance of a reaction which is common to many kinds of cells and which we observed and analyzed in 1897 and subsequent years and which we désignated as stereotropism of tissue cells 3. We further found that the blood cells of Limulus, as a result of this stereotropie re- sponse and the concomitant spreading out of their protoplasm along the surface of the solid body, underwent degenerative changes; they lost their granules, became hyaline and gradually motionless and then died. There was some indication that this spreading out of the cells was accompanied by a taking up of fluid from the surrounding medium and that this led to processes of solution which initiated the re- trogressive changes. !. 2» 4 In order to prolong the life of these cells it was therefore necessary to retard this exaggera- 1 Leo Loeb, Journal Medical Research, 1902, IT 145. Virehow’s Archiv. 1903, Vol. 173, 35. 2 Leo Loeb, Folia Haematologica 1907, IV 313. Pfliiger’s Archiv. 1910 Vol. 131, 465. 3 Leo Loeb, Archiv. f. Entwickelungsmech. 1898 VI 297. Anatomical Record 1912, VI 109. [Vou. LV. No. 1410. ted stereotropic response which led to a spread- ing out of the cell in contact with the solid body. We found previously that this can be done not only by keeping the cells at a lower temperature, which retards other activities as well as the stereotropic reactions and is there- fore not specific, but in a specific manner by enabling the cells to rest on a surface previous- ly covered with a thin film of paraffine or va- seline. 4 Jn contact with such a surface the spreading out of the cells is considerably re- tarded and the life of the cells and the dura- tion of their amoeboid movement is prolonged. In carrying out these experiments, we make use of the experimental cell fibrin (amoebocyte) tissue, a small piece of which we place on the prepared surface and surround with the de- sired kind of fluid. Last summer at the Woods Hole Marine Bio- logical Laboratory we continued these experi- ments with the cooperation of Mr. K. C. Blanchard ® and found an additional method of preventing the extension of the cells and thus to prolong their life and activities. This can be accomplished by making the medium into which the cells enter from the piece of tissue very slightly acid, an observation which agrees with our previous finding according to which the cells perish in a neutral solution of isotonic sodium chloride, but are preserved in such solu- tions after addition of a very small amount of either acid of alkali.? In our recent experiments we found that in such slightly acid media the cells leave the tissue in dense masses and continue to move for a considerable period of time; they are preserved, their spreading out is much retard- ed and their motor activity in consequence much prolonged. In alkali the cells are like- wise preserved for some time, but they begin to spread out and become dissolved much earlier than in acid. It is possible to grade the effect of acid upon the cells. If the acid used is too strong and 4 Leo Loeb, Washington 1920 VIII 3. Vol. 56 140. 5 These experiments will be more fully described by the writer and Mr. K, C. Blanchard elsewhere. University Studies American Journ. Physiol. 1921, JANUARY 6, 1922] consequently the consistency of the cell too great, their motility is diminished. If it is used in too weak a concentration, the spreading out and solution processes are not sufficiently de- layed. In an intermediate concentration of the acid, the consistency is such that the migration of the cells out of the piece is readily possible and at the same time the cells are preserved and the stereotropic reaction is retarded. But ultimately the cells begin to spread out and now retrogressive changes set in even in these favor- able media. However, it may be possible to keep the cells active for six days or longer even at room temperature, at which under or- dinary conditions the cells spread out and be- come hyaline on the first or second day. In this case we recognize thus as the prin- cipal cause of cell death an extreme degree of reactivity of the cells in contact with solid sur- faces. There is good reason for assuming that this reaction leads to an increased permeability of the surface of the cell which reaches a de- gree which is injurious and is thus respon- sible for the subsequent degenerative processes. Conditions which prevent this extreme stereo- tropic reaction tend therefore to prolong the life of the cells. Acid acts in this way ap- parently by increasing the consistency of the cells, at least of its outer layer. As we have shown elsewhere‘ there exists a striking analogy between the behavior of the amoebocytes and ordinary tissue cells. Through agglutination the amoebocytes produce sheets of a tissue-like material. After an incision in such a tissue cells migrate from the cut edge into the defect, in a way similar to tissue cells ad- joining a wound. In both eases two factors determine the direction of migration: (a) The stereotropic reaction, (b) a tendency towards centrifugal movement. During the process of movement the amoebo- eytes spread out and thus produce structures totally unlike the original amoebocytes, but closely resembling various tissues. TO RAS IAG] creeper eet a re eres 200 Scientific Notes and N e€ws.....---.1...-c.ce-cc1eeencnees 203 University and Educational Notes............-...--- 206 Discussion and Correspondence: Kilobar, Kilocal, Kilograd: PRoressor ALEXANDER MoApir. The Geology of Western Vermont: Dr. C. E. Gorpon. Acute Sense of Sound Location in Birds: JOSEPH MAIDLLAIRD...............2--ccccccssecsessncessecesore 207 Scientific Books: Lacroiz on Déodat Dolomieu: Dr. GEORGE BE VARN EG UIN eae eaes ASE Se Pe ISN a 209 Special Articles: Dissociation of Hydrogen in a Tungsten Furnace and Low Voltage Arcs in the Mon- atomic Gas: Dr. O. S. DurFrEnBack. A Simple Method of Dealing with Electrified Microsections: Dr. S. W. GBISER.......0.002002-. 210 The American Chemical Society: Dr. CHARLES SEAR SONGS een Ge eae ie 212 A MECHANICAL ANALOGY IN THE THEORY OF EQUATIONS! To the mathematician the solution of a prob- lem is the more interesting if it utilizes meth- ods and principles from fields that at first glance seem foreign to the one in which the problem lies. The question of whether a linear differential equation has algebraic solutions is sufficiently important to attract attention of itself, but its answer by reference to the prop- erties of regular polyhedrons has become a mathematical classic. Such analogies are not, however, to be regarded as mere tours de force whose purpose is only to astonish, or to appeal to a certain esthetic sense; the instance just mentioned shows that the new point of view may disclose wide vistas hitherto undis- cerned. If there is a choice of terms in which the analogy may be stated, the formulation which is most conerete and most striking may also be the most illuminating. Such considerations as these, doubtless, have led to the deseription of what are essentially vector methods with complex variables in terms of mechanicai systems. I propose here to diseuss the progress that has been made by the aid of such an interpretation in studying the distribution in the complex plane of the roots of algebraic equations in one variable. On the algebraic side the chief purpose of the investigations to be considered has been to obtain what may be called theorems of separa- tion, i. e., theorems which state whether roots ~ of an equation do or do not lie in specified regions of the complex plane. Such theorems may also state how many roots lie in the speci- fied regions, or may give limits, inferior or superior, for the number of roots thus situ- ated. These regions may be defined in terms 1 Address of the vice-president and chairman of Section A—Mathematics, American Associa- tion for the Advancement of Science, Toronto, 1921. 190 of the roots of other polynomials; we are then concerned with relative distributions of the roots of two or more polynomials. Theorems of separation for real roots of real equations are numerous, and are among the most familiar results in elementary mathe- matics. I need only mention Descartes’ rule, which gives a superior limit for the number of roots on the positive real axis, or Sturm’s method for obtaining the exact number in any real interval. Rolle’s theorem, in the form which states that between each consecutive pair of real roots of a real polynomial f(x) there lies an odd number of real roots of the derived function f’(x), is perhaps the most important proposition concerning relative distributions of real roots of two real polynomials. No such progress has been made with sim- ilar propositions for complex roots, although the widening of the field of observation from the real axis to the complex plane vastly increases the range of possibilities. To be sure, we have extensions of Sturm’s theorem, and other methods, both algebraic and tran- scendental, which give eriteria for the exact number of roots within a region, but in prac- tice these prove so cumbersome as to be of little use. The great desideratum is a body of results whose simplicity and range of appli- cations would make them comparable with Rolle’s theorem, or the Budan-Fourier theorem in the real case. As Jensen has remarked, the solution of important problems regarding the zeroes of transcendental functions may be de- pendent upon progress in this direction. The significance of Rolle’s theorem naturally led to attempts to extend it to the complex plane almost as soon as the now familiar geo- metrie representation of complex numbers had been adopted. A line of attack is clearly indi- cated by the identity of the logarithmic deriva- tive Ud fe) ie f(z) Xaien where f(a) is a polynomial of degree n, whose roots are @,, @,.-,@, and f’(z) is the first derivative of f(x). Gauss was probably the first to give this a mechanical interpretation which depends on the representation of a com- plex number z—a as a free vector whose 1 He ane : Z—a n XL— da, SCIENCE [Vou. LV, No. 1417 length, |z— al, and direction are those of the directed line segment from the point which corresponds to a, or, more briefly, from the point a, to the point x. The conjugate of the reciprocal of z—a, which may be denoted by the symbol Ke i , corresponds to a vector having the same direction as the vector —a but with a length equal to the reciprocal of x—al. This is precisely the vector which represents the force at « due to a particle of unit mass at a which repels with a force whose magnitude is equal to its mass divided by the distance. If, then, we take the conjugate of both sides of the identity of the logarithmic derivative, we have the theorem of Gauss: The roots of £/(x) which are not also roots of £(x) are the points of equilibrium in the field of force due to particles of unit mass at the roots of £(x), each of which exerts a repulsion equal to its mass divided by the distance. From this result it is but a step, though one not taken for many years, to the polygon theorem of Lucas, now sufficiently well known to have a place in Osgood’s “Lehrbuch der Funktionentheorie,” but discovered and redis- covered, proved and reproved in most of the languages of Hurope—and all the proofs are substantially the same! This ignorance of the work of others characterizes even some of the most important contributions in this field. Lucas, for example, seems to have considered himself the discoverer of the theorem of Gauss, which really antedates his work by many years. The polygon theorem, in its usual form, is a theorem of relative distribution which states that the roots of the derived function f’(x) lie within or on the perimeter of the smallest convex polygon (or line segment) which ineludes within itself or on its boundary all the roots of f(x). This statement implies that there is but one such polygon (or line seg- ment), which reduces to a point if f(z) has all its roots coincident. In case the polygon of Lucas does not reduce to a line or a point, the only roots of f’(x) on its perimeter are mul- tiple roots of f(z). An equivalent form giving a separation theorem for the roots of f(z) states that every straight line through a root of f’(a) either passes through all the roots of FEBRUARY 24, 1922] f(z) or else separates them, 7. e., has roots on each side of it. This form is immediately sug- gested by the corresponding mechanical sys- tem; it is evident that a point of equilibrium must either be collinear with all the repelling particles, or else the latter must be seen under an angle of more than 180° from the former. This result is only one of many concerning the relative distribution of roots of f(a) and f’(a) that may be inferred from the conditions of equilibrium of our mechanical system; we have deduced it by taking account only of the directions of the repelling forces. By con- sidering their magnitudes as well J. Nagy (Jahresbericht der Deutschen Mathematiker Vereinigung, Vol. 27 (1918), page 44) has obtained a number of interesting theorems of which the following is one of the most striking: If ais a root’of the polynomial f(x) of degree n, and B is a root of f’(x), every circle through the points B and y = B + (n—1)(B—a) contains at least one root of f(x). The proofs given do not, however, make explicit use of the mechanical analogy. In a paper read before the International Congress of Mathe- maticians at Strasbourg J. L. Walsh has util- ized Gauss’s theorem in discussing the case where the roots of f(x) lie in two circles. If the repelling particles exert a force inversely proportional to the square of the distance we obtain theorems of relative dis- tribution of roots in which f’(x) is replaced by f(a)f"(z) — [f’(2)]*; from a root of the latter function the roots of f(x) must be seen under an angle of at least 90°, and the polygon of Lucas is replaced by one bounded by ares of circles. Other extensions of this sort sug- gest themselves, but nothing, so far as I am aware, has been published along this line. An immediate corollary of the polygon the- orem states that all the roots of all the derived funetions lie within the polygon of Lucas. It is well known that the centroid of the roots of f(a) coincides with that of the roots of its derivative of any order. An often discovered theorem places the roots of f’(x) at the foci of a curve determined by the roots of f(a). In 1912 Jensen, in a very suggestive memoir on the theory of equations (Acta Mathematica, Vol. 36), stated without proof a theorem for SCIENCE 191 equations all of whose coefficients are real which may be regarded as an improvement on the polygon theorem. If f(z) is a real poly- nomial its complex roots form conjugate pairs. The resultant force of repulsion due to parti- cles at such a pair of points is directed away from the real axis at a point not on this axis and which lies outside the cirele whose diam- eter is the line segment joining the pair; we designate this circle the Jensen circle of the pair. At a point within the Jensen circle and not on the real axis the resultant force due to the pair is directed toward the real axis, while on the real axis and on the circumference of the circle it is parallel to the real axis. Thus at a point which is neither on the axis of reals nor within or on the circumference of any of the Jensen circles corresponding to the com- plex roots, the resultant force of repulsion due to the whole system of particles at the roots of f(x) cannot vanish, for the force due to each particle on the real axis is directed away from that axis, and the same is true of the forces due to pairs of particles at the complex roots. We thus have Jensen’s theorem: The voots of f£'(x) which are not real must lie within or on the Jensen circles of £{(x). To be more precise, a root of f’(a) cannot lie on a Jensen cirele unless it is real, or unless it is a multiple root of f(z), or unless it is also within or on another Jensen circle. Since the addition of a constant force par- allel to the real axis does not change the above argument, Jensen’s theorem remains valid when we substitute for f’(<) the function af(z) + f’(2) where @ is any real number. Another extension indicated by Jensen con- cerns the regions within which roots of the successive derived equations lie, these regions being defined in terms of the roots of f(z). Thus the complex roots of f’’(x) are in the Jensen circles of f’(z), whose centers are on the axis of reals and whose vertical diameters are within the Jensen circles of f(x). The solution of a simple problem in envelopes shows that all the complex roots of f’’(x) lie within or on ellipses each of which has a pair of complex roots of f(z) at the ends of its minor axis and has a major axis whose length is \/2 times that of its minor axis. For the 192 rth derived equation the result is the same except that the ratio of lengths of axes is \/r. Jensen states that this is also true of the func- tion g(D) . f(x), where g(D) is a linear differ- ential operator of order r with constant coeffi- cients whose factors are all real, and that f(z) may be an integral transcendental function of genus zero or one. In a recent paper (Annals of Mathematics, Vol. 22 (1920) p. 128), J. L. Walsh notes some results for non-real polynomials which follow from considerations that led to Jensen’s theorem. He also gives an answer to the ques- tion which at once suggests itself as to how many roots of f’(x) lie within a Jensen circle when f(z) is real by a method of interest in itself, doubtless suggested by Bécher’s treat- ment of a similar problem which we shall note later. By allowing all the roots of f(a) out- side a Jensen circle to move out to infinity, noting what roots of f’(z) may enter or leave the circle, and counting those within the circle at the end of the process, Walsh concludes that if @ Jensen circle has on or within it k roots of £(x) and is not interior to nor has a point in common with any exterior Jensen circle, then it has on or within it not more than k+1 nor less than k—1 roots of f’(x). Ina paper not yet published I have obtained a result a little more precise than this in which, for the -sake of simpler statement, I will suppose neither f(a) nor f’(#) has multiple roots. By the term “root of even index” I designate a real root of f’(a) between which and the next real root of f(x) to the right or left there lies an odd number of real roots of f’(x); if f(z) has no real roots this term denotes every other real root of f’(), starting with the least. All the real roots of even index of f’(x) can be shown to lie in or on Jensen circles, and every such circle that has no point in or on it within or on any other Jensen circle has within it either just one real root of even index of f’(x), or just one pair of complex roots of f'(z). The region covered by a system of Jensen circles each of which overlaps or touches some other of the system has within it the total number of real roots of even index and of pairs of complex roots of the derived equation which the cireles would have if they SCIENCE [Vou. LV, No. 1417 were separated, but there may be circles of the system containing no such points. General criteria to determine whether even an isolated Jensen circle contains a pair of complex roots or a real root of even index of f’(a) are lack- ing, though Walsh discusses special cases, in some of which we may use a circle smaller than Jensen’s. Relative distributions of the roots of a real polynomial f(z) and of its derivative in vari- ous special cases have been discussed by H. B. Mitchell (Transactions of the American Math- ematical Society, Vol. 19 (1918), p. 43). The identity of the logarithmic derivative is used, but the mechanical analogy and Jensen’s the- orem are not cited. So far we have been concerned only with theorems of relative distribution for the roots of a polynomial and of its derivative. In a most suggestive paper by Bocher (‘A Problem in Statics and its Relation to Certain Alge- braic Invariants,” Proceedings of the American Academy of Arts and Sciences, Vol. 40 (1904), p. 469) our mechanical system is generalized by assigning to particles at points e,, @,,. . e, masses m,, M,, .. m_ respectively, with the same law of repulsion as before. Negative values for the masses are admitted, the repul- sion becoming an attraction in the case of the corresponding particles. The field of force is then given in both magnitude and direction by re Cae 1 ae £—e, OG, L—e, The cases of greatest interest are those in which the sum of the masses is zero. By pro- jecting such a system stereographically upon a sphere (the same result could be established by inversion on a circle about «), Bécher proves that a point cannot be a position of equilibrium if it is possible to draw a circle through it upon which not all the particles le and which completely separates the attractive particles which do not lie on it from the repul- sive particles which do not lie on it. A remarkable property of these systems whose total mass is zero is now developed by introducing homogeneous variables Di ae aaa teneer tl Saat Zo é. Fepruary 24, 1922] If the above expression for the field of force is reduced to a common denominator within the parenthesis, the numerator is the product of x2 and a covariant p of weight 1 of the n linear forms e”x,—e’x,. The points of equi- librium are roots of the covariant ¢, and ¢ vanishes at no other points unless two of the particles coincide. If the points e, are defined as the roots of a system of binary forms ff, the masses of all the particles corresponding to each f being equal, ¢ is an integral rational covariant of the forms f,, and we are thus led to theorems of relative distribution for the roots of a system of forms and those of a covariant of the system. In particular, if the system consists of but two forms, the covariant ¢ is their Jacobian; in all cases @ can be ex- pressed as a polynomial in the ground-forms and Jacobians of pairs of the ground-forms. The conditions of equilibrium of the cor- responding mechanical system can now be interpreted as theorems of separation for the roots of the forms. Thus if f, and f, are two binary forms whose roots are all in circles C, and C, respectively, and these circles do not touch or overlap, then all the roots of the Jacobian of f, and f, are in C, and C,. The actual number of roots in each circle is ob- tained by allowing the roots of f, to coalesce at a point a, and shrinking C, to this point; during this process C, is always to inelude all the roots of f,. At the end of this process the Jacobian has p,—1 roots at a,, where p, is the degree of f,. We conclude that the Jaco- bian originally had this number of roots in C,, and a correspondingly determined number in C,. The circles C, and C, may be replaced by cirele-are polygons. The polygon theorem of Lucas corresponds to the special case where one of the ground- forms reduces to Xp. A ease of especial interest is that where one of the two ground-forms is linear; we have just noted a particular instance. The Jacobian of y,x,—y,x, and f(#,,2,) is the first polar of (y,,y,) with respect to f. In a series of papers dating from 1874, to be found in his collected works, Laguerre had developed sep- aration theorems for a binary form and its SCIENCE 193 polars, without the use of our mechanical analogy. Bécher seems to have been unac- quainted with these results, which, however, are directly obtainable from his own. If the circle C, of the preceding paragraph is re- placed by the point (y,,y,), we have La- guerre’s theorem which states that if this point is outside a circle C, that contains all the roots of f(#,,2,), then all the roots of the polar wf, + y2f;, lie within C,. Laguerre gives i by this a more striking form by supposing (#,,”,) taken arbitrarily and determining the “derived point” (y,,y,) as the point which makes the polar vanish. Hvery circle through a point and its derived point either has all the roots of £(x,, x,) on it, or else there is at least one root within and at least one root without the circle. In non-homogeneous vari- ables the derived point y of a point a with respect to f(a) is where n is the degree of f(a). The first ap- proximation to a root of f(a) being a, the next approximation by Newton’s’ method is 2) f’ (x) light upon Newton’s method in the complex plane; it replaces x by a point within a circle on which «x lies, and which surely contains a root of f(z). A point coincides with its derived point when and only when the point is a root of f(a). Let a be such a simple root, and let £ be its derived point with respect to F(a), where f(z) = (a—a)F (a), and the degree of f(x) is at least two. Since F(a) = f’(a), and F’(a) = Yef" (a), we have goa yo f(a) F'(a) f" (a) Each cirele through a and £ either has all the roots of f(a) upon it or else at least one is within it and at least one is without. There is thus at least one root whose distance from Thus we have a most interesting = a4—2(n—1) a# is not greater than 2(2—1) plea, f(a) Laguerre and others have made interesting applications of these results to polynomials 194 all of whose roots are real, and to polynomial solutions of linear differential equations. Before leaving this phase of our subject we may note, with Laguerre, that similar the- orems hold for each of the successive polars of a binary form with respect to a point. An interesting field hardly touched as yet is that of separation theorems for the successive polars of a form with respect to a sequence of points defined as the roots of another form. By taking the two forms in a special case where they are apolar Grace has proved (Proceedings of the Cambridge Philosophical Society, Vol. 11 (1901), p. 35) a result equivalent to this: If the distance apart of two roots «,, %, of a polynomial f(a) of degree n is 2a, there is at least one root of £’(x) on or in the circle aoe 7 : whose radius is a cot —, and whose center is n 1%4(a,-+a,). In this paper lack of references indicates ignorance of Laguerre’s work. The same result was proved later by Heawood (Quarterly Journal of Mathematics, Vol. 38 (1907), p. 84) by allowing all the other roots of f(x) to vary suitably. Here, again, there is no reference to any other work in this field. To return to more recent work on the van- ishing of the Jacobian of two forms f, and f,, we note two very interesting papers by Walsh in the Transactions of the American Mathe- matical Society, in which are discussed cases where the roots of the ground-forms are in three circles, instead of two. An added inter- est is shown to attach to the Jacobian because the numerator of the derivative of a rational function ua) fy(ts2,) v(@) fa (%yy #2) is x* multiplied by the Jacobian of f, and f,. Separation theorems for the Jacobian are then interpretable in terms of this derivative. The results of these papers are, of course, only a first step to the consideration of still more general separation theorems. The field is the more interesting in that its investigation involves a combination of mechanical, alge- braical, and geometrical considerations. I must close with only a mention of certain extensions of the problem we have so far con- SCIENCE [Vou. LV, No. 1417 sidered. Thus Bécher, generalizing a method due to Stieltjes, considers the positions of equilibrium of a system of free particles of equal mass in a field of force due not only to a number of fixed repelling particles, but also to their own mutual repulsions according to the same law. If the total mass of fixed and moving particles is 1, the positions of equi- librium of the free particles are determined by the vanishing of covariants, of which some examples are given by Bécher. These results, as well as some obtained by adding a force function K[f(a)], are useful in the study of polynomial solutions of differential equations. We must regret that Bécher was never able to fulfill the hope twice expressed in this paper that he might be able to return in detail to these problems which he had merely sketched. Their investigation requires considerable skill, but, if successful, would add a new and im- portant chapter to algebra, with a striking application of invariant theory. D. R. Curtiss NORTHWESTERN UNIVERSITY WILLIAM BATESON ON DARWINISM Asipe from the fine impression created by the admirable series of papers and addresses in biology, zoology and genetics in Toronto at the Naturalists’ meeting, a very regrettable impression was made by a number of passages in the addresses of Professor William Bateson, the distinguished representative of Cambridge University and British biology. On the morn- ing following his principal address the Toronto Globe (December 29, 1921) published, in large letters: “Bateson Holds That Former Beliefs Must Be Abandoned. Theory of Darwin Still Remains Unproved and Missing Link Between Monkey and Man Has Not Yet Been Discoy- ered by Science. Claims Science Has Out- grown Theory of Origin of Species.” In inter- mediate type it announced: “Distinguished Biologist from Britain Delivers Outstanding Address on Failure of Science to Support Theory That Man Arrived on Karth Through Process of Natural Selection and Evolution of Species. Have Traced Man Far Back but Still He Remains Man,’ and, in smaller type: The missing link is still missing, and the Dar- FrBruary 24, 1922] © winian theory of the origin of species is not proved. This was the verdict of one of the fore- most British scientists, Professor William Bate- son, director of the John Innes Horticultural Institute, Surrey, England, in the course of an epoch-making address on ‘‘Evolutionary Faith and Modern Doubts’’ at the general session of the American Association for the Advancement of Science, held in Convocation Hall last evening. While declaring that his faith in evolution was unshaken, he frankly admitted that he was ‘agnostic as to the actual mode and process of evolution.’’ Believing in evolution in ‘‘dim out- line,’’? he pronounced the cause of origin of species as utterly mysterious. The speaker then reiterated views expressed in previous addresses. Again quoting the Globe: Referring to the variations occurring in the different species, Dr. Bateson stated that there was no evidence of any one species acquiring new faculties, but that there were plenty of examples of species losing faculties. Species lose things, but do not add to their possessions. ‘‘ Biological science has returned to its rightful place,’’ said Dr. Bateson, ‘‘namely, the investigation of the structure and properties of the conerete of our visible world. We cannot see how the differen- tiation into species came about. Variation, of many kinds, often considerable, we daily wit- ness, but no origin of species. Distinguishing what is known from what may be believed, we have absolute certainty that new forms of life, new orders and new species have arisen in the earth, but even this has been questioned. It has been asked, for instance, ‘How do you know that there were [no] mammals in paleozoic times? May there not have been mammals somewhere on earth though no vestige of them has come down to us?’ We may feel confident there were no mammals then, but are we sure? In very ancient rocks most of the great orders of animals are represented. The absence of the others might by no great stress of the imagination be ascribed to accidental circumstances. ’’ Tt is not surprising that the next day the Globe published a signed letter, under the cap- tion, “The Collapse of Darwinism,” of which the following is an abstract: To an audience rarely paralleled in Canada for scientific eminence and influence, the famous Professor Bateson, with amazing frankness, re- moved one by one the props that have been con- SCIENCE 195 sidered the very pillars of Darwinism. A scientist of international repute, one of the leading, if not the leading evolutionist, of the day, he exposed the weakness of many of the leading planks in the ‘‘Origin of Species,’? and ruthlessly tore down one by one the once fondly believed links in the great chain of Darwinian evolution. These citations cannot be dismissed as mere newspaper talk of no import. They are called forth by the fact that many of the statements in Bateson’s address as cited below are inaccu- rate and misleading, especially those relating to the origin of species, natural selection, and infertility between species. It is not true that we do not know how species originate. The mode of the origin of species has long been known—in fact, it was very clearly stated by the German paleon- tologist Waagen in the year 1869, a statement which has been absolutely confirmed beyond a possibility of doubt in the fifty years of sub- sequent research. It is also true that we know the modes of origin of the human species; our knowledge of human evolution has reached a point not only where a number of links in the chain are thoroughly known but the characters of the missing links can be very clearly predi- cated. The cause of the origin of species is another matter and has been sought in all branches of biology and biological research without an adequate solution having been found. Charles Darwin’s theory of selection forms a partial solution of causation and, so far from being discarded, now rests upon much stronger evidence than it did when Darwin enunciated it. The broad impression conveyed to my mind by the brilliant series of papers in the division of Genetics at Toronto is that geneties is essentially a branch of morphology. It is a running comparison between the morphology of the germ cell and the morphology of the adult. It is in this field, to which Professor Bateson has lent such distinction, that he fails to find either the mode or the cause of the origin of species. Referring again to the ethical question of the dissemination of scientific truth, I am reminded of the precaution pressed upon me by Huxley from his own experience. He once 196 told me that before delivering any of his pop- ular addresses he very carefully wrote out every word he intended to say, lest in the heat of enthusiasm at the moment he might say something which would give a wrong impres- sion of the truth. We men of science are far too eareless in the application of this Huxleyan advice, especially in our popular addresses, which are eagerly read by the public. We must state the truth so clearly that it cannot be misunderstood and when we give voice to our own opinions we should clearly indicate them as our opinions and not as facts. Bate- son’s attitude towards Darwinism has been patronizing ever since he began his evolution- ary studies. When he refers epigrammatically in a previous address to reading his Darwin as he would read his Lueretius he is indirectly stating an untruth which is caleulated to do untold harm. In his Toronto address he does not clearly distinguish between his own per- sonal opinions based on his own field of ob- servation and the great range of firmly estab- lished fact that is now within reach of every student of evolution who surveys the world of life under natural conditions. Since writing the above there has come to hand a copy of Professor Bateson’s address', from which the following excerpts may be made: Discussions of evolution came to an end pri- marily because it was obvious that no progress was being made. Morphology having been ex- plored in its minutest corners, we turned else- where. ... We became geneticists in the convic- tion that there at least must evolutionary wis- dom be found. . . . The unacceptable doctrine of the secular transformation of masses by the accumulation of impalpable changes became not only unlikely but gratuitous. ... Less and less was heard about evolution in genetical circles, and now the topic is dropped. When students of other sciences ask us what is now currently believed about the origin of species we have no clear answer to give. Faith has given place to agnosticism. .. . . .. But if we for the present drop evolution- ary speculation it is in no spirit of despair. . . Biological science has returned to its rightful 1 Bateson, William: Evolutionary Faith and Modern Doubts. Screncz, January 20, 1922. SCIENCE [Vou. LV, No. 1417 place, investigation of the structure and proper- ties of the concrete and visible world. We can not see how the differentiation into species came about. Variation of many kinds, often consider- able, we daily witness, but no origin of species. . . ... But that particular and essential bit of the theory of evolution which is concerned with the origin and nature of species remains utterly mysterious. We no longer feel as we used to do, . that the process of variation, now contemporane- ously occurring, is the beginning of a work which needs merely the element of time for its comple- tion; for even time can not complete that which has not yet begun... . . .. Meanwhile, though our faith in evolution stands unshaken, we have no acceptable account of the origin of ‘‘species.’’ .. . . . . The survival of the fittest was a plausible account of evolution in broad outline, but failed in application to specifie difference. . .. The claims of natural selection as the chief factor in the determination of species have consequently been discredited... . . .. Even in Drosophila, where hundreds of genetically distinct factors have been identified, very few new dominants, that is to say positive additions, have been seen, and I am assured that none of them are of a class which could be ex- pected to be viable under natural conditions. I understand even that none are certainly viable in the homozygous state... . Analysis has revealed hosts of transferable characters. ... Yet critically tested, we find that they are not distinct species and we have uo Treason to suppose that any accumulations of characters of the same order would culminate in the production of distinct species... . Twenty yars ago, de Vries made what looked like a promising attempt to supply this so far as Gnothera was concerned. .. . but in application to that phenomenon the theory of mutation falls. We see novel forms appearing, but they are no new species of Cinothera, nor are the parents which produce them pure or homozygous forms. . . If then our plant may by appropriate treatment be made to give off two distinct forms, why is not that phenomenon a true instance of Darwin's origin of species? In Darwin’s time it must have been acclaimed as exactly supplying all and more than he ever hoped to see. We know that that is not the true interpretation. For that which comes out is no new ereation. .. . . . . If we cannot persuade the systematists to come to us, at least we can go to them. They Frsruary 24, 1922] too have built up a vast edifice of knowledge which they are willing to share with us, and which we greatly need. They too have never lost that longing for the truth about evolution which to men of my date is the salt of biology, the impulse ‘which made us biologists. . . . The separation between the laboratory men and the systematists already imperils the work, I might almost say the sanity, of both... . IT have put before you very frankly the con- siderations which have made us agnostic as to the actual mode and processes of evolution. When such confessions are made the enemies of science see their chance. ... Our doubts are not as to the reality or truth of evolution, but as to the origin of species, a technical, almost domestic, problem. Any day that mystery may be solved. ... That synthesis will follow on an analysis, we do not and cannot doubt. These passages seem to me to do great credit to Professor Bateson in so far as they contain a frank expression of his opinion that up to the present time neither the causes nor the mode of origin of species have been revealed by the older study of Variation, the newer study of Mutation, or the still more modern study of Geneties. If this opinion is generally accepted as a fact or demonstrated truth, the way is open to search the causes of evolution along other lines of inquiry. Henry Farrrizitp OsBoRN CoLUMBIA UNIVERSITY, DEPARTMENT OF ZOOLOGY, JANUARY 21, 1922 SCIENCE IN THE PHILIPPINES EVER since returning from the Philippines in 1919, after a four-year stay, I have had in mind the writing of a brief account of con- ditions as I found them, especially those con- ditions which are of interest to the research man, who has wondered how the general status of his profession, and working condi- tions in the tropics compare with conditions in a large city in the northern part of the United States. My own experience in the trepics is limited to Manila and vicinity, but from my reading and from conversation with others I am of the opinion that conditions in the Philippines, Cuba, Panama, India, Java SCIENCE 197 and other places in the tropics are somewhat similar, independent of the longitude. I have purposely delayed setting down my ideas, be- cause I wished to wait until I could have a fair perspective in comparing experiences in the Philippines with experiences in the United States both before and after my stay there. There are so many advantages and so many disadvantages to be taken into account that it is difficult to say which loeation is the more satis- factory for scientific work, and of course, the delights and new interests, and the broadening of one’s horizon that come about from travel in the Orient are not to be overlooked. I shall mention only a few points to be considered without making any attempt to give them in the order of their importance. Climatie conditions are unfavorable in so far as their effect on physical and mental efficiency is concerned. The high temperature and high relative humidity have a tendency to cut down productiveness. To accomplish a given result requires much more energy and determination than in a temperate climate. With the ther- mometer around 95 to 100 degrees Fahrenheit and the relative humidity between 90 and 100 per cent., the average individual is not so keen about performing his daily activities, especially those which require mental effort. The general slowing up suffered by the aver- age individual coming to the tropics from a temperate climate is so well understood by old Spanish residents of the Philippines that they divide all foreigners into three classes. There are the Ricien Nacidos, those who have been in the islands not to exceed two or three years, or literally, the “recently born.” The middle class consists of those who have been there for five to ten years, and are beginning to become modi- fied by the environment. The last class is called the Platinos, or “bananos.” This class is sup- posed to have eaten so many bananas that they have become sleepy and torpid, have lost much of the industry of a temperate climate and have settled down and become a part of the general scheme of life in the tropies. The separation from scientific societies and the opportunity to discuss problems and com- pare notes with others of the same profession 198 must be admitted is a serous disadvantage. The range of acquaintanceship with persons engaged in his own class of work is limited and while there are a few science organizations these are small in comparison with those that can be enjoyed in an American city. The re- sult is that, although one often spends more time in reading books and journal articles than if he were here, he finds on his return that a number of things of importance have transpired in the science world of which he either did not hear, or which failed to make much of an im- pression on him. Work is often retarded by failing to sup- plies promptly. It so happened that during my stay in the Philippines this condition pre- vailed all over the world, but it was worse there and is more or less chronic. If supplies are ordered from the United States, they cannot be expected in less than three months. To receive them in such a short time means that the stock was on hand at the supply house when the order was received and that there was no delay in filling the order. The time may be shortened, of course, by sending a cablegram, but unless definite arrangements are made and a special code established, this procedure is not prac- ticable in general. With the cable rate from Manila to New York more than a dollar a word it may be seen that cable messages are justi- fiable only in rather unusual circumstances. If the order, when it arrives in Chicago or New York, is not filled with care and dispatch, an- other month or two may elapse. Usually it is not safe to count on delivery of goods in less than six months. it frequently happens that the manufacturer or dealer in America does not realize how long a time is required for an ex- change of correspondence and will write re- questing some further information, which means a delay of another three months, and so on. On one oceasion I ordered a pyrometer from a well known manufacturer in the United States. The order was sent by mail, but marked rush, and we hoped to receive the in- strument within three or four months. At the end of that time, a letter was received, asking whether the wall type or table type of galvano- SCIENCE [Vou. LV, No. 1417 meter was preferred. This was answered at once, stating that the table type was preferable. Several months later another letter came, this time asking whether we desired the scale to be graduated in Fahrenheit or Centigrade. By this time our work had been held up so long and we were so disgusted by the long delay that we at once cabled him to send the Centigrade scale. Practically a year from the date of the original order, the instrument arrived. Pos- sibly a little profanity was justifiable when on unpacking the pyrometer, it was found that he had sent the Fahrenheit scale. Of course, this is an extreme case, but serves to illustrate the serious disadvantage of being separated by 10,000 miles from a supply house where a large stock of chemicals and apparatus may be ob- tained immediately. In Manila, as a rule, such materials are handled by drug stores and the limited stocks which they carry are available only to tide over until regular orders can be placed. Usually the chemicals in stock are pri- marily for pharmaceutical purposes, and not many chemically pure reagents are to be had. Such compounds as ferrous salts seem to be- come oxidized much more rapidly than here; although I have seen no actual data to that effect. Also a number of compounds which do not take up moisture rapidly in a dry climate, do so there. On one occasion I bought an ounce or two of sodium thiosulphate for some photo- graphic work. After completing the work, I left the remainder of the chemical in its original container which happened to be a paper bag and placed it in a drawer of the library table. On pulling out the drawer a few days later I was surprised to find considerable water which had wet a number of articles in the drawer. On looking for the source I found that the chemical was saturated with water and that it was neces- sary to keep it in a tight container. Chemicals for use in the tropics should be ordered in small containers so that if a portion is removed and the remainder is allowed to stand for a time, the loss will not be great. Although the cost of chemicals in quarter-pound bottles is slightly higher than in pound bottles, the saving and satisfaction more than repay the extra cost. The deterioration of instruments and appara- Persruary 24, 1922] tus is especially troublesome. Almost any metal except gold or platinum will corrode rapidly if given half a chance. A number of experiences soon bring this to the attention of a new arrival in the islands. Wire paper fas- teners must be made of brass if it is desired to keep pamphlets and magazines in good condi- tion. After a short time, ordinary iron wire fasteners corrode to such an extent that the paper in contact with them is discolored from iron rust. Ordinary iron wire paper clips rust so rapidly that after a year or two they cannot be removed without being bent out of shape. The frames of cameras made of metal covered with leather go to pieces in some cases. The alloy becomes oxidized and pushes off the leather cover. Of course, it is an easy matter to remove the covering of oxide and replace the leather, but in a short time, more moisture has been absorbed and corrosion has taken place a second time. These are trivial things compared with what happens to delicate physical apparatus of all kinds. It seems almost impossible to protect instruments from atmospherie moisture to such an extent that corrosion does not begin, and if this continues long enough the piece of appara- tus is worthless. In many cases the corrosion does not justify replacement, but does demand restandardization. In order to get satisfactory results with pyrometers, galvanometers and the like it is necessary to restandardize them fre- quently, and this requires considerable time. Too long a time would be required to return the apparatus to the manufacturers for repairs and restandardization. Even glass lenses of micros- copes, telescopes, cameras and the like are not immune. If they are not used for a time, they become spotted, and often have to be repolished. Reliable skilled assistants are difficult to ob- tain. The demand for them is somewhat lim- ited and every position is filled. However, there does not seem to be a position vacant nor a man out of employment. Most of the posi- tions are filled by Europeans or Americans, though there is an ever increasing body of Filipinos trained in science. The difficulty is that there is very little flexibility to the system. If one man returns to the States or leaves his SCIENCE 199 regulary position for any reason, it is almost impossible to replace him without a long delay of correspondence back and forth to the United States and during this time, it often happens that valuable pieces of research are held up and interest is lost in them, because no one can be found to carry on the work. Thus far I have mentioned only the tribula- tions of scientists in the tropics and I wish to protest against any charge of exaggeration. The account is not overdrawn and all of the items mentioned have come under my personal observation, and I believe anyone who has had experience in the tropics will verify them. However, there is another side, as I have pre- viously mentioned. In this connection, the first thing which I shall discuss is the great interest and fascination of the various research prob- lems which one encounters in the Philippines. The field is comparatively new and if one has some idea or plan for research, the chances are that on investigation, he will not find that it has been trampled over, but that he has practi- cally a carte blanche. Although extensive re- search has been carried on at the Bureau of Science and elsewhere for the past decade or two, nevertheless the vast number of problems waiting to be solved have scarcely been touched. While skilled assistants are few and difficult to obtain, unskilled help is plentiful. Filipinos are adapted physically to careful manipulation and some of them are very satisfactory indeed. The salary for such a position is much lower than here and a number of helpers are often available—which greatly expedites the work. The climatic conditions make the average American irritable and perhaps unusually hard to please, and while he is in the islands he is likely to believe that his unskilled assistants possess little merit and are difficult to direct, but when he looks back at his experiences, he is likely to change his mind materially and wish he could have half a dozen muchachos in his laboratory in the States. Generally the laboratory is in a building of only one or two stories. This is very satis- factory because there is much less danger from fires and accidents. The uniform temperature greatly adds to the flexibility of the laboratory. 200 If the train of apparatus to be set up is too long for the room available, some of it may be put outside the laboratory. There is no ques- tion of cold and heat to be taken into account and during most of the year all that is needed is protection from the sun. There is always the advantage of good light and air and freedom from soot and dirt. Laboratory work is prac- tically out-of-door work. There is no heating system, and no frozen pipes to be dreaded. J. C. Wirt CuHicaGo, SEPTEMBER 10, 1921 CHARLES HENRY DAVIS 2ND CHarLtes Henry Davis 2np, Rear Admiral, retired, U. S. Navy, who was twice Superin- tendent of the Naval Observatory, died at Washington, D. C., December 27, 1921. He was born in Cambridge, Mass., August 28, 1845, the son of Charles Henry Davis and Harriette Blake Mills. Admiral Davis graduated from the Naval Academy in 1864. From 1875 till 1885 he was engaged principally in astronomical work, at first in the Naval Observatory at Washington, in the Department of Chronometers, and then in expeditions for the determination of longi- tudes by means of the submarine cables. Also, the latitudes of many stations were determined by Taleott’s Method. In No. 6, Navy Scientific Papers, published by the Bureau of Navigation, are given the in- vestigations by Davis of Chronometer Rates as affected by Temperature and other Causes. The results of the longitude expeditions are presented in three publications of the Navy Hydrographie Office: with Lieutenant-Com- mander Francis M. Green and Lieutenant J. A. Norris “Telegraphic Determination of Longi- tudes, embracing the Meridians of Lisbon, Ma- deira, Porto Grande, Para, Pernambuco, Bahia, Rio de Janeiro, Montevideo, and Buenos Aires, with the latitudes of the Several Stations’; also with Lieutenant-Commander Green, and Lieutenant Norris, “Telegraphic Determination of Longitudes in Japan, China, and the Hast Indies, embracing the meridians of Yokohama, Nagasaki, Vladivostok, Shanghai, Amoy, Hong-Kong, Manila, Cape St. James, Singa- SCIENCE [Von. LV, No. 1417 pore, Batavia, and Madras, with the latitude of the several Stations”; with Lieutenants Nor- nis and Laird, “Telegraphic Determination of Longitudes in Mexico and Central America and on the West Coast of South America, em- bracing the meridians of Vera Cruz, Guatemala, La Libertad, Paita, Lima, Anca, Valparaiso, and the Argentine National Observatory at Cordoba, with the Latitudes of the Several Sea- Coast Stations.’ Davis as a Captain was Superintendent of the Naval Observatory from July, 1897, to April, 1898, leaving the Observatory to com- mand the Dixie in the Spanish War. He re- turned to the Observatory in November, 1898, and remained on duty there as Superintendent until November, 1902. As Superintendent, Captain Davis took an active and successful part in the completion of the equipment of the New Naval Observatory and in formulating plans for the work to be carried on. In 1904 Davis was made a Rear Admiral, and in 1904 and 1905 he was the U. S. representa- tive on the international commission of in- quiry on the North Sea incident which sat in Paris. After service at sea as Squadron Commander, Admiral Davis was retired August 28, 1907. He continued to be interested in astronomy after his retirement, by reason of his achieyve- ments in science and because of his long service at the Naval Observatory. His father, also a Rear Admiral, had twice been Superintendent of the Observatory and had established the Nautical Almanae Office. SCIENTIFIC EVENTS BRITISH SCIENTIFIC INSTRUMENTS! Tue exhibition of British scientific instru- ments held under the auspices of the Physical Society and the Optical Society at the Imperial College of Science and Technology, of which a description was given in our columns last week, is a timely reminder of the importance of scientific instruments in the national economy. Modern civilization is based, and must be in- creasingly dependent, on the extension of 1 From Nature. FrBruary 24, 1922] scientific knowledge and its applications to in- dustry; and in these developments scientific instruments are an essential and predominant factor. Of the part played by scientific instruments in the advancement of scientific knowledge there is no need to speak. The laboratories of the universities and kindred institutions where scientific research is prosecuted would be dis- abled were they without scientific instruments of the highest trustworthiness and precision. The variety and extent of the industrial pur- poses served by scientific instruments are so great that there is probably no important in- dustry in the country which is not dependent on scientific instruments of one kind or an- other for the performance of its productive functions. Moreover, the field of application of scientific instruments is constantly widen- ing; the uses of the microscope in the textile and steel industries, of the polarimeter in the sugar and essential oil industries, of the pyro- meter in the metallurgical industry, and of X-rays in the iron and steel industries, are but a few of the many examples that could be cited to illustrate the invasion of scientific instru- ments into fields of industry in which they were at one time unknown. That the industries gain in sureness and accuracy and in a deep- er and wider knowledge of the fundamental scientific principles involved is obyious. And the process continues and must continue. To- morrow new instruments will be devised and new uses found for old instruments. Moreover, as was stated in the leading ar- ticle published in Naturn of February 10, 1921, the scientific instrument industry, spring- ing directly from the loins of science, and pro- gressing as scientific knowledge widens, is one of the most highly skilled industries we have. Its expansion means a definite increase in the numbers of academic and technical scientific workers and of the most highly skilled artisans; and the national wealth, in any comprehensive conception of the term, must be enlarged by the increase of the numbers of such educated and skilled classes. For these and other reasons a flourishing and efficient scientific instrument industry is SCIENCE 201 vital to the nation, whether in peace or war. And, although it is obvious that the users of scientific instruments, whether in the indus- trial or academic domain, must not be pre- judiced or hampered by being unable to ob- tain the best instruments, from whatever source, it would be a disaster of the first magnitude if British scientific instruments should not be produced equal to the best that the world has to offer. AN ENGLISH JOURNAL OF SCIENTIFIC INSTRUMENTS! NatuRE may be continuous and the divisions of time and space no more than artificial ar- ticulations devised to suit the human intellect. Nevertheless, physical science is based on measurement, and proceeds only by the use of selected units of time, space, quantity, and so forth. Every new branch of science leads to the ereation of a new set of units, and according to the latest theory it would appear that energy itself is most conveniently regarded as divided into “quanta”’—measurable and related units. Many of the most illuminating advances in theory and actual discoveries of fact have come about by more refined methods of weighing and measuring. By these, argon, radium, and many new elements have been isolated and identified; by these the structure of the atom and the new alchemy which trans- mutes one element into another have been re- vealed. In every laboratory a new research implies the devising of new apparatus or the detection of deficiencies in existing apparatus. The literature in which such advances in techni- cal methods are published is scattered all over the civilized world. It is written in many languages and at present there is no adequate system of indexing or recording it. Doubtless the patent offices contain sufficient descriptions of improvements with actual or possible com- mercial value; but even this field is so vast that applicants have to employ special agents before they can guess if their claims are novel. But for a large proportion of the methods de- vised in the prosecution of research patents are neither sought nor desired. Sir Richard Glaze- 1 From the London Times. 202 brook, when director of the National Physical Laboratory, recognized the waste of time and the duplication of effort arising from this con- fusion. He had his opinion confirmed by many men of science, Government Departments, trade associations, and private firms. His successor, Sir Joseph Petavel, and the Advisory Council of Scientific and Industrial Research have taken up the question where he left it, and now hope to found a journal to deal with the methods of measurement and instruments. A prelimi- nary number is being prepared under the di- rection of the Institute of Physics, the Re- search Department, and the National Physical Laboratory. It is hoped that the distribution of this, the cost of which is to be borne by the Department of Scientific Research, will secure sufficient support to place the venture on a permanent basis. There can be no doubt that the establishment of the proposed journal would be of value to the progress of all branches of scientific work. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA AND REVIEW OF SCIENTIFIC INSTRUMENTS Durine the past few years there has been an increasing appreciation of the need in America of a journal devoted to scientifie instruments of all kinds. This need is due to a number of The ever increasing volume of scien- tific material which is being offered for publica- tion is so crowding many of our journals that space does not permit an adequate description of apparatus used. Further, many instruments and instrumental methods, developed for a single experiment, can be applied to a variety of measurements. If described only in econ- nection with the work for which they were developed, the description is relatively inaccess- ible since it is subsidiary to the main scientific discussion of the article. In many sciences there is no medium for the publication of articles describing apparatus primarily for pedagogical purposes in lecture demonstrations and laboratory. Such short articles or notes should serve a very useful purpose since every real teacher is always on the lookout for means of improving his teach- ing. Further, newly developed apparatus and causes. SCIENCE [Vou. LV, No. 1417 methods of one science are very frequently ap- plicable to work in another science. A medium of publication readily accessible to all would save much time and energy. The first steps toward the development of an instrument journal were taken by the National Research Council and the Association of Scien- tific Apparatus Makers of the United States of America in jointly taking under advisement the establishment of a new journal for the pur- pose. After extensive consideration it seemed unwise to start an independent journal. Final- ly representatives of the Optical Society of America, which was publishing a bi-monthly journal under the title Journal of the Optical Society of America, were invited to a confer- ence which ultimately resulted in an arrange- ment whereby the Optical Society, cooperating with the National Research Council and the Apparatus Makers Association, is to add to its journal a section on scientific instruments. The enlarged journal is to be published under the title Journal of the Optical Society of America and Review of Scientific Instruments, and will be issued monthly, beginning with May, 1922. It will be under the direction of an editorial board composed of Dr. P. D. Foote, Bureau of Standards, editor-in-chief; Professor F. K. Richtmyer, Cornell University, assistant editor- in-chief and business manager; and a repre- sentative board of associate editors. In addition to articles on theoretical, ex- perimental and applied optics in the section on optics of the new journal, there will be published in the instrument section original articles on scientific instruments of all kinds (z. e., electrical, mechanical, ete., as well as optical) for research and instruction in chem- istry, physics, biology and other sciences. The editors announce that they will be glad to re- ceive manuscripts for publication, and sugges- tions as to desirable subject matter to include in the journal. GIFT OF THE PROCEEDS OF RESEARCH FOR RESEARCH On January 26, 1922, a contract was signed between The Babies’ Dispensary and Hospital and the W. O. F. Laboratories Company, Cleveland, Ohio, in connection with the manu- PEBRUARY 24, 1922] facture of S. M. A.—an artificial food adapted to mother’s milk and developed by Dr. H. J. Gerstenberger, medical director of The Babies’ Dispensary and Hospital and professor of Pediatrics of Western Reserve University Medi- cal School, who has transferred all of his rights to The Babies’ Dispensary and Hos- pital. S. M. A. is said to represent an improve- ment over the older attempts at making an arti- ficial food for infants more like human milk in that it contains a fat that in its saponifica- tion, iodine, and Reichert-Meiss! numbers is like the fat of woman’s milk, and in that it further possesses decided anti-spasmophilic and anti-rachitic powers. The latter are at least partly due to the use of eodliver oil in the mak- ing of the S. M. A. fat. S. M. A. was fed to dispensary and hospital infants under careful supervision from 1915 to 1920. During January, 1920, it was made available to the medical profession of Cleve- land with excellent results, as can be realized from the increase in sales per month, being 1,000 quarts at the beginning and 20,000 quarts during December, 1921. During November, 1920, S. M. A. was put up in powder form, and a year later was made available to the medical profession throughout the country. As a result of this contract the Babies’ Dis- pensary will receive a minimum of $10,000 per year. To meet the request of Dr. H. J. Gersten- berger, the contract contains a clause limiting the use of the funds to research purposes. Tnasmuch as The Babies Dispensary and Hos- pital will be the future department of pedia- tries of Western Reserve University Medical School, it is hoped that this accomplishment will aid in the prompt development of the pediatric unit of the new medical group of Western Reserve University. PROFESSOR J. W. TOUMEY AND THE YALE SCHOOL OF FORESTRY APPRECIATION of the part played by Dean J. W. Toumey, of the Yale School of Forestry, in securing Mr. Henry S. Graves as his sueces- sor, and satisfaction in the former’s decision to continue in the service of the university as SCIENCE 203 Morris K. Jesup professor of silviculture, is expressed in a vote passed by the Yale Cor- poration. It was due to Professor Toumey’s initiative and wish that efforts were made to induce Mr. Graves to return to the university as head of the School of Forestry. The vote of the corporation follows: Voted, in accepting, at the request of Professor James W. Toumey, his resignation as dean of the School of Forestry, to record the satisfaction of the president and fellows that he is to remain in Yale’s service as Morris K. Jesup professor of silviculture, and to spread upon the minutes of the corporation an expression of its gratitude to him for his successful administration as acting director and then as dean. During this, and due to his untiring interest and enthusiasm, this youngest of Yale’s schools has gained largely in endowment, extended its educational scope, and added both to its equipment in New Haven and to its facilities for instruction in the field through the acquisition of the school forests in Connecti- cut and in New Hampshire. The corporation recognizes with pride and gratitude that no other school of Yale University has enjoyed a more remarkable and better planned development than has the School of Forestry under Dean Toumey’s administration, the close of which is fittingly marked by the successful consummation of two projects nearest his heart. One of these is the aequisition by the School of Forestry of a build- ing adequate for its needs; the other is the return to Yale University as head of the school of Henry 8. Graves, B.A. 1892. The fact that the movement to bring the latter back as dean originated with Professor Toumey is but one example from many which might be cited of his desire to see the school take advantage of every opportunity before it and of his constant, loyal and unselfish devotion to its welfare. SCIENTIFIC NOTES AND NEWS THe annual meeting of the National Aca- demy of Sciences will be held at the United States National Museum, Washington, on April 24, 25 and 26. Dr. George HK. Hate has resigned as presi- dent of the Pacific Division of the American Association for the Advancement of Science to attend the meeting of the International Re- search Council in Brussels. Dr. Barton Warren 204 Evermann, director of the Museum of the Cali- fornia Academy of Sciences, has been elected president to succeed Dr. Hale, and will give the address at the meeting to be held in Salt Lake City from June 22 to 24. It will be re- membered that the American Association for the Advancement of Science will hold a sum- mer meeting at Salt Lake City in conjunction with the Pacifie Division. We learn from Nature that a portrait of Sir Patrick Manson was unveiled by Sir James Michell at the London School of Tropical Medicine on January 20. The portrait was subseribed for by a large number of past and present students and other friends at home and abroad. THE board of managers of the Hospital of the University of Pennsylvania will extend the age limit for professors to enable Dr. John B. Deaver to continue as head of the surgical de- partment of the University Medical School. Dr. Deaver will be 67 years old on July 25, and the board of managers was unanimous in the desire to retain him. Dr. SmitH Ey JELLIFFE has been elected president of the New York Psychiatrie Society. BraDLEy StoucHtTon, formerly secretary of the American Institute of Mining and Metal- lurgical Engineers, was elected president of the Yale Engineering Association at the annual meeting on February 2, 1922. Dr. Harotp PENpDER, director of the depart- ment of electrical engineering at the Univer- sity of Pennsylvania, was recently appointed chairman of the standards committee of the American Institute of Electrical Engineers. Mr. Joun G. SULLIVAN was elected presi- dent of the Engineering Institute of Canada for 1922 at the annual meeting held in Mon- treal from January 24 to 25. We learn from Nature that shortly after the retirement of Professor P. F. Frankland from the Mason chair of physics in the University of Birmingham a fund was opened with the object of providing some permanent memorial of his work in the university. The money subscribed was devoted in the first place to a SCIENCE [Vou. LV, No. 1417 portrait of Professor Frankland (painted by Mr. Bernard Munns), which now hangs in the great hall of the University at Edgbaston. The balance of the fund has been applied to the institution of a Frankland medal, which, together with a prize of books, is to be pre- sented annually to the best student in practical chemistry. THe council of the Geological Society has this year made the following awards: Wollaston Medal, Alfred Harker; Murchison Medal, John William Evans; Lyell Medal, Charles Davison; Wollaston Fund, Leonard Johnston Wills; Murchison Fund, Herbert Bolton; Lyell Fund, Arthur Macconochie and David Tait. Tue Prince Albert of Monaco and Professor G. O. Sars, of Christiania, were elected foreign members of the Zoological Society of London at its monthly meeting on December 21. In the recent reorganization of the Russian Soviet cabinet, three new portfolios were created, one of them for public health, in which Dr. Semashko has been placed in charge. Dr. Lester A. Prarr, who has been in charge of the research laboratory of the Merrimac Chemical Company, Boston, for the past six years, has been made director of research in the same institution. Epwarp A. DIETERLE, assistant chief chemist of the Koppers Company, Pittsburgh, Pa., has been made chief chemist of the Chicago By- Product Coke Company, Chicago. Dr. Cart §. OaKMan, of the Digestive Fer- ments Company, Detroit, has accepted the general managership of the Wilson Labora- tories, Chicago. Proressor Jacop R. Scuramm, of the de- partment of botany of Cornell University, has been granted a leave of absence for work in Washington on Botanical Abstracts. PROFESSOR STEPHEN §. VISHER has resumed his teaching of geography at Indiana Univer- sity after spending nearly six months in a field study of the tropical cyclones of the Paci- fic. The investigation was financed by the Bishop Museum of Honolulu and by Yale and Pusrvuary 24, 1922] Indiana Universities. Dr. Visher studied in the Hawaiian, Fijian and Philippine Islands and in Australia, coastal China and Japan. Dr. Howarp S. Resp, professor of plant physiology in the University of California, is spending the winter in the West Indies and Central America, in travel and in observation of the citrus industry. J. S. Neeru, managing editor of Chemical and Metallurgical Engineering, sailed for Europe on February 11, for a six months trip through Germany, France, Belgium and other European countries. The purpose of the trip is to study industrial and economic conditions and observe the latest advances in engineer- ing and technology. Leave of absence has been granted a party of naturalists from the State University of Towa to spend the summer of 1922 in the Fiji Islands and New Zealand. The party will con- sist of Professor C. C. Nutting, zoologist, who will act as leader; Professor R. B. Wylie, botanist; Professor A. O. Thomas, geologist; Assistant Professor Dayton Stoner, entomolo- gist and ornithologist; Mrs. Dayton Stoner, assistant entomologist, and Mr. Waldo S. Glock, assistant geologist. Dr. J. Gorpon THompson, lecturer on pro- tozoology at the London School of Tropical Medicine, has, at the invitation of the British South African Country, gone to Rhodesia to investigate protozoological diseases. Dr. Thom- son sailed on January 5 and expects to be ab- sent six months. He will give special atten- tion to the etiology of blackwater fever. Proressor H. §. Lanerep, of Harvard Uni- versity, delivered an address on “Instinct and War” at an open meeting of the William James Club of Wesleyan University on Decem- ber 4. Professor H. G. Boring, of Clark Uni- versity, addressed the club on February 10, on “The Changing Status of Introspection.” Dr. Hawiry O. Taytor gave a course of twelve lectures on auditorium acoustics at Franklin Union, Boston, beginning on January 3. The lectures were addressed particularly to architects and builders and treated the sub- SCIENCE 205 ject in a way to enable architects to satis- factorily adjust the acoustics of the rooms which they design. On February 9, Professor J. Howard Mathews, chairman of the department of chem- istry of the University of Wisconsin, addressed the Purdue Section of the American Chemical Society on the subject “Some of the Research Methods and Research Problems of Photo- chemistry.” Dr. J. C. Buioopgoop, of Baltimore, Asso- ciate Professor of Clinical Surgery at the Johns Hopkins Medical School, gave a Mayo Founda- tion Lecture, January 14; he discussed “The present day trend of surgery and pathology and the outlook for the future.” Dr. Rocer I. Lex, professor of hygiene, Har- vard University, lectured before the School of Hygiene and Public Health, Johns Hopkins” University, on “The physical examination of large groups of individuals,” at its regular weekly lecture, February 6. Dr. J. A. Deruersen, of the University of Illinois, delivered a lecture before the Royal Canadian Institute at Toronto on January 21, on “Recent experiments bearing upon the in- heritance of acquired characters.” Proressor H. A. Brouwer, of Delft, Hol- land, who is exchange professor in the Univer- sity of Michigan for the spring semester, will deliver a course of lectures on the “Geology of the Dutch East Indies.” He will also deliver a series of more popular lectures upon “The people and geology of the Hast Indies.” THe annual meeting of the Eugenics Re- search Association will be held at Cold Spring Harbor, Long Island, Saturday, June 10, 1922. The title of Dr. Lewellys F. Barker’s presiden- tial address is “Heredity and the Hndocrine Glands.” Proressor Lerrier, of Stockholm, is en- deavoring to organize an International Con- gress of Mathematicians, to be held at Stock- holm in the coming summer. Tue Royal Society of Archeology of Brus- sels has formed a section of the history of 206 medicine, the first meeting of which was held on December 9. Dr. Mélis was appointed presi- dent, and Dr. Muls of Brussels, secretary. Dr. Huta B. Everitt, professor of gyne- cology at the Woman’s Medical College, Phila- delphia, was killed on January 24 when her automobile collided with a motor truck. THE Yale Alumni News writes: “The late Professor Joseph Paxson Iddings, of the United States Geological Survey, a graduate of the Sheffield Scientific School in the Class of 1877, and who had a distinguished career as a teach- er and research worker in the field of petrology, was always greatly interested in the work of petrology at Yale, and especially in the work of his friend, the late Professor Pirsson. Dr. Iddings gave, some years ago, the Silliman Lectures at Yale University, and he was for many years connected with the University of Chicago as professor of petrology. Through a gift from his~-sister, Mrs. Estelle Iddings, Cleveland, the entire portion of Dr. Iddings’ estate, amounting to over $25,000, has been presented to the Board of Trustees of the Sheffield Scientific School, the income of this fund to be used for the promotion of research work in petrology. During the life of one per- son a portion of the income of this fund will not be available, but there will be established for the next university year a scholarship of $500 open to a properly qualified student in the graduate school of the university competent to carry on research work in petrology. This scholarship is to be known as the Joseph Pax- son Iddings Scholarship in Petrology. The award of this scholarship is, by the terms of the gift, in the hands of a committee composed of the director of the Sheffield Scientific School and the professor of geology, who is a member of the Governing Board of the Sheffield Scien- tifie School.” ATTENTION is called in Nature to the fact that on January 2 occurred the centenary of the birth of Rudolf Julius Emmanuel Clausius, the distinguished mathematical physicist and the predecessor of Hertz in the chair of natural philosophy at Bonn. ‘The son of a pastor and schoolmaster, Clausius was born at Koslin, SCIENCE [ Vou. LV, No. 1417 in Pomerania, and after attending the gym- nasium at Stettin, spent four years at Berlin, where he studied under Dirichlet, Steiner, Dove, and Magnus. Before going to Bonn he held appointments at the Royal Artillery School, Berlin, Ziirich Polytechnic, and Wiirzburg Uni- versity. Recognized as one of the founders of the science of thermo-dynamies, it was in his memoir to the Berlin Academy of Sciences in 1850 that he re-stated Carnot’s principle in its correct form. To him is also due the concep- tion of entropy. His chief work, “Die Mechan- ische Warmetheorie,” appeared in 1867. The kinetie theory of gases and the theory of elec- trolysis also owed much to his labors. He was called to Bonn in 1869, served as Rector of the University during 1884-85, and died there on August 24, 1888. Tue House of Representatives has passed the Lampert bill to increase the salaries of the chief or principal examiners of the Patent Office from $2,700 to $3,900 per year and those of the assistant examiners by amounts ranging from $150 to $900 per year. The bill pro- vides an increase of force to the extent of one law examiner, 26 assistant examiners, and 22 clerks. UNIVERSITY AND EDUCATIONAL NOTES THe will of Amos F. Eno, disposing of $13,000,000 or more, is declared invalid by a surrogates’ court jury on the ground that Mr. Eno was of unsound mind when he executed it. It is the second time the will has been declared invalid in surrogate’s court, the appellate divi- sion having ordered a retrial. The will was executed in June, 1915, two months before Mr. Eno’s death. His estate has increased since then, so that the distribution under the doeu- ment now would have been approximately: Columbia University, between $5,000,000 and $6,000,090; other institutions, $3,000,000, and relatives, $4,600,000. Besides the residuary bequest to Columbia University Mr. Eno be- queathed to New York University, the Amer- ican Museum of Natural History, the Metro- politan Museum of Art and other institutions, $250,000 each. The largest cash beneficiary FEBRUARY 24, 1922 was the General Society of Mechanies and Tradesmen, to which the _ testator left $1,800,000. Tue will of Cora M. Perkins gives her re- siduary estate to Columbia University, in addition to a direct bequest of $30,000 for chemical research. A Reuter dispatch from Brussels states that Louvain University has received a legacy of $100,000 toward erecting a special building for cancer research. Dr. M. C. Merritt, professor of horticulture at the Utah Agricultural College, has been ap- pointed professor of horticulture and dean of the new College of Applied Arts at the Brig- ham Young University, Provo, Utah. T. L. Patterson, Ph.D., formerly of the physiological department of the State Univer- sity of Iowa College of Medicine, has been appointed professor and director of the depart- ment of physiology at the Detroit College of Medicine and Surgery. Dr. Atice SuLiivan has sufficiently recov- ered from her accident of last summer in the Colorado floods to assume her position as instructor in psychology at the University of Tlinois. DISCUSSION AND CORRESPOND- ENCE. } KILOBAR, KILOCAL, KILOGRAD In a letter just received from The Meteoro- logical Office, Professor Whipple very kindly informs me of the result of a question put to the Secretary of the Chemical Society regard- ing the attitude of British chemists regarding the bar. While the opinion expressed is to be regarded as unofficial, Professor Philip says: “Your letter in reference to the definition of the ‘bar’ was considered by our Publication Committee. The general opinion is that very few English chemists use the ‘bar’ as a unit of pressure on either basis. There was a feeling, however, that in view of the use of the ‘bar’ in Langmuir’s papers and other communica- tions emanating from the same quarter (see SCIENCE 207 e. g. Dushman in the General Electric Review, 1920-1) English chemists would be more likely to use the ‘bar’ in that sense than in the sense employed by meteorologists.” It will be recalled that meteorologists in 1913, quite unaware of the fact that the bar had been accurately defined by Professor T. W. Richards in 1903, and thinking they were coining a new word, adopted the bar as the unit of pres- sure but gave it the value of a megabar. My friendly correspondent, a meteorologist of prominence, adds: “This looks as if the con- fusion is likely to spread. We shall have a permanent ambiguity like those in the words billion and calorie.” ‘ To this, I have answered: There need be no contusion if meteorologists will simply write kilobar, where they now use millibar. The practical unit of pressure is 1000 bars, the bar being the pressure expressed in terms of force which will give an acceleration of 1 centimeter per second per second to one gram of matter. It is the natural basic unit, strietly C. G. 8. and was in legitimate use by chemists and physicists 10 years previous to its appropria- tion by meteorologists. With regard to the calorie, it will no longer be necessary to specify the calorie as the gram calorie or therm. The word calorie by itself will mean the amount of heat that will raise the temperature of a gram of pure water from 1000 to 1003.66 Kelvin-kilograds. The larger unit, much used by engineers, being the amount of heat required to raise the temperature of one kilogram of water, can be called the kilo- cal. The scale of temperature which has been used without difficulty at Blue Hill Observatory for the last five years, makes the thermal co- efficient of the expansion of a gas (air) at con- stant pressure .001 instead of .00366. This is very easily accomplished by making zero on the scale, the absolute zero (—273.12° Ac) and making the freezing point of pure water at megabar pressure, 1000. There are numerous advantages in the use of the seale. When used in connection with kilobar pres- sure, values of temperature and pressure are 208 decimalized; and equations in thermodynamics require about half the old style multiplication and division. It may be noted that, unlike the Fahrenheit and Centigrade which depend upon the boil- ing point of water, a variable quantity, depend- ing upon pressure, and hence not the same from one day to another, or even from one place to another, the Kelvin-kilograd uses only the freezing point. The effect of change of pressure on the freezing point is so small com- pared with the boiling point that the correc- tion is practically negligible. ALEXANDER McADIE BLUE HILL OBSERVATORY, JANUARY 30, 1922 THE GEOLOGY OF WESTERN VERMONT In a paper entitled “Studies in the Geology of Western Vermont,” published in the Twelfth Biennial Report of the Vermont State Geolo- gist, pp. 114 to 279, the writer has deseribed field relations among the lower and middle Ordovician strata along the eastern shore of Lake Champlain in the townships of Benson, Orwell and Shoreham which seem best ex- plained as great dislocations in the forms of reverse faults and one or more low-angle thrusts by which certain massive dolomite and lme- stone strata of lower Ordovician age have been broken and moved westward for indeterminate distances over shales and interbedded black slates and limestones belonging to the same geological system, but undoubtedly younger in age. Similar phenomena were described also for the lake region near Burlington, where, how- ever, thrust phenomena had long been better known. In the northern areas, so far as studies had then been carried by the writer, the presence of lower Ordovician limestones on middle Ordovician slates seemed largely con- fined to the islands of the lake, while on the mainland of Vermont certain siliceous dolo- mites and quartzites belonging to the Cambrian system and to the lower Cambrian terrane were found reposing on black slates with interbedded limestone bands not very different from those found beneath the lower Ordovician limestones SCIENCE [Vou. LV, No. 1417 on the islands and on the mainland farther south in Orwell and Benson. In addition to the description of the more or less clearly defined deformations just referred to the writer offered field evidence in support of the view that similar dislocations may prob- ably define the fundamental deformational feat- ures of the rocks within parts of the Taconic Range, and along the “Vermont Valley” and the western margin of the Green Mountain plateau contiguous thereto, although within the latter-mentioned areas the thrust relations have been much disguised by normal faulting. In the summer of 1921 the writer continued his studies in western Vermont among the islands of Lake Champlain and along the main- land in Phillipsburg, Quebec, and in the Ver- mont towns of Highgate, Swanton, Sheldon, St. Albans, Georgia, Fairfield, Fairfax, Milton and Colchester. Although there are present in these areas certain differences in respect to de- formation and erosion, with which in some degree apparently are to be correlated the former extent and present boundaries of the lake in its northern portions, and also ceviain geographical variations, chiefly in the rocks composing the lower Cambrian beds in north- ern Vermont, the major thrust relations are clearly defined. Many interesting structuzal details were noted. It is purposed, at the first opportunity, to continue these later studies thus begun and to publish a second paper on the geology of west- ern Vermont, dealing chiefly with deforma- tional features among: the islands of Lake Champlain and along the Vermont shore region of the lake as far south as Shoreham.? C. E. Gorpon AMHERST, MAass., NovEMBER 1, 1921. ACUTE SENSE OF SOUND LOCATION IN BIRDS In a recent issue of Screncn,? Dr. A. G. Pohlman, of the St. Louis University School of Medicine, briefly discusses some matters per- taining to the ability of birds to locate the 1 Published with the consent of the Vermont State Geologist. FEBRUARY 24, 1922] source of sounds, under the heading, “Have Birds an Acute Sense of Sound Location?” He closes by saying that he would appreciate any direct observational data touching upon this subject. The following is an affirmative an- swer to his question: On the morning of September 9, 1921. when in camp near Kneeland post office, Humboldt County, California, while I was seated among some rather tall bushes, watching for sparrows, a Sharp-shinned Hawk (Accipiter velox) flew on to a lower limb, some thirty or forty feet above the ground, of a dead fir tree about seventy yards away, alighting with its back to- ward me. While the bird was visible to me through the small openings among the branches of the bushes I must have been absolutely hidden from its view. Just to see what the result would be I squeaked in imitation of a wounded bird when, to my great astonishment, the hawk wheeled as if on a pivot with remarkable rapidity and darted in a bee line over the tops of the bushes straight in my direction. When it reached the spot directly over my head, and not six feet above me, it evidently was aware that it had reached the center of the sound field for, not seeing anything there to account for the sound, it shot abruptly up into the air and lit on a limb of another dead fir so close to me that I shot it with my 32 caliber auxiliary barrel with a small charge of No. 12 shot. The most curious part of this incident is that the hawk did not stop to listen and analyze or locate the sound, as might a jay for instance, but with the first squeak it turned quick as a flash, and darted with arrowlike speed for the spot from which the sound emanated; that is to say on the exact line (more correctly, vertical plane) between its perch and the spot, as the height of the bushes prevented it from aiming its flight quite low enough. It seemed to me that if my head had been high enough to be above the bushes it would have struck me. This was the most remarkable exhibition of instantaneous precision in locating sound, not only as concerns direction but also as to rapid- 1Sctmncz, New Series, Vol. LIII, No. 1375, May 6, 1921, p. 439. SCIENCE 209 ity of impulse, that it has been my good for- tune to witness. JOSEPH MAILLIARD CALIFORNIA ACADEMY OF SCIENCES, San Francisco, CALIFORNIA SCIENTIFIC BOOKS Déodat Dolomieu, membre de VInstitut Na- tional (1750-1801); sa correspondance, sa vie aventureuse, sa captivité, ses cuvres. ALFRED Lacrorx. Ouvrage publié par VAcadémie des Sciences avee le concours de VInstitut (Fondations Debrousse et Gas) Paris, Librarie Académique, Perrin et Cie, 1921, 2 vols, Ixxx, 255, and 8vo. 322 pp., With line portrait frontispiece. port., Tue latest work of Professor Alfred Lacroix is a very important contribution to the history of the scientific men of France in the eighteenth century, perhaps all the more so that the name of Dolomieu is not well known in foreign lands. The book has grown out of the researches made by Professor Lacroix in preparing the biographical sketch of Dolomieu which he read before the Académie des Sciences on December 2, 1918, and which has already been reviewed in Science. He found a number of Dolomieu’s letters in the library of the Muséum d’Histoire Naturelle, and traced out many others in for- eign libraries and in private hands. The author remarks that the chief value of those letters he has selected for publication is that they include a series, covering a period of some twenty years, written by Dolomieu to a small number of par- ticular friends, so that they enable the reader to follow his life day by day in its more inti- mate details. The earliest in date of these letters were addressed by Dolomieu to his pat- ron, Duke Alexander de la Rochefoucauld, member of the Académie des Sciences and colonel of the regiment “De la Sarre,” who was destined to be assassinated in 1792, almost in Dolomieu’s arms. An interesting group of 47 letters are those written to the Sicilian naturalist Giseni; these treat at length of the important investigations of Dolomieu in the domain of voleanic forma- tions. Other groups of letters are those sent to 210 the Chevalier Philippe de Fay, the truest of Dolomieu’s friends, to Picot de la Peyrouse, botanist and geologist of Toulouse, to the great geologist Saussure, to the Genevan physician Pictet, to Pierre Picot, professor of theology in Geneva, and to Frederic Munter, professor of theology in Copenhagen. The following extract from a letter to this last named correspondent, is a characteristic example. Dolomieu, after passing safely through the throes of the French Revolution, was appointed, in 1796, lecturer in geology and the distribution of minerals at the newly- organized Heole des Mines. A year later, Jan. 15, 1797, he writes to his friend Munter:? “The sciences, which were for me formerly a relaxation, have become a profession which fur- nishes me the means of livelihood, and none the less I cultivate them with pleasure. I am chiefly occupied with mineralogy and geology, and I give lessons in these branches at the Heole des Mines during the winter. During the summer I travel to inspect the mining operations. I have assumed charge of the mineralogical ar- ticles of the Dictionnaire Encyclopédique, and I write articles which are published in various journals. Thus I employ my time in a manner agreeable to myself and I advance without much disquietude toward that. fatal term against which all human hopes make shipwreck. We have become so accustomed to the idea of death, that we now see our last hour approaching with complete indifference.” The biographical sketch already noted is re- printed by Professor Lacroix at the beginning of the first volume of the present work (pp. i— Ixxx). To this succeeds the unique record writ- ten by Dolomieu in 1799, in his prison at Mes- sina, where he was incarcerated because of his supposed guilt, as a Knight of Malta, in aiding Bonaparte to seize the island. It was inscribed on the margins of the leaves of a book he had succeeded in obtaining, and which is now a pre- cious possession of the Muséum d’Histoire Naturelle (pp. 1-44). The quality of this rec- ord may be exemplified by the following brief extract : “My passion for the phenomena of Nature 1 Vol. II, p. 138. SCIENCE [Von. LV, No. 1417 was so strong that every vear, when spring renewed the life of the vegetable kingdom and gave new force to all organized beings, the environs of Paris seemed too restricted for me, its atmosphere heavy and offensive Therefore each year I hastened to the Gaon ains, and sought on their summits those pro- found emotions which the contemplation of very great objects always procures us Now, confined within a space of twelve feet long, and ten feet in height and width, I can only contemplate my own wretchedness and reflect upon the vicissitudes of fortune and my strange destiny.” Fortunately the Italian victories of Bona- parte opened his prison doors, his liberty be- ing prescribed in one of the articles of the peace treaty of Florence, March 20, 1801. However, his enfeebled health did not long permit him to enjoy his recovered freedom. He died at Chateauneuf, November 6, 1801, but fifty-one years old. Of Dolomieu’s scientific attainments, Pro- fessor Lacroix notes that it was principally in the study of volcanic phenomena that he left his trace, and asserts that by his researches concerning Auvergne, he takes his place in the first rank of those who have recognized and demonstrated the relations existing between voleanism and the internal heat of the earth. GEoRGE F. Kunz SPECIAL ARTICLES DISSOCIATION OF HYDROGEN IN A TUNGS- TEN FURNACE AND LOW VOLTAGE ARCS IN THE MONATOMIC GAS In the course of an investigation of arcing characteristics of diatomic gases being carried on in this laboratory, it was found that the are between a hot tungsten filament and a plate anode in hydrogen struck and broke at a minimum of 16.4 volts. This potential is about that ascribed by Bohr’s theory to the potential necessary to accelerate an electron — so that it will dissociate the molecule and ionize one of the atoms upon impact. In view of the fact that Bohr’s theory puts the ionizing po- tential of the hydrogen atom at 13.52 volts Frpruary 24, 1922 and the radiating potential at 10.14 volts, it seemed that it should be possible to maintain an are at 13.52 volts or even as low as 10.14 volts. The failure to maintain an are at these potentials was ascribed to the insufficient amount of monatomic hydrogen in the tube. During the course of this investigation, Pro- fessor K. T. Compton suggested that it might be possible to dissociate hydrogen by means of a cylindrical tungsten furnace which could also be used as one of the electrodes for the are. The writer undertook the investigation of the possibility of this and computed the per cent. of monatomic hydrogen which would be in equilibrium with the diatomic gas on the basis of Nernst’s equation of the “reaction- isobar.”?. Taking the heat of dissociation to be 84,000 calories per gram, 8 = 0.000225, and the chemical constants for the diatomic and the monatomic hydrogen to be? -3.4 and -1.6 respectively, the per cent. of monatomic hydrogen in equilibrium with diatomic hydro- gen is indicated in the following table: 1000° 1500° 2000° 2500° 3000° Pressure K K K K K 0.5mm. .005 2.36 61.5 Complete 10mm. .004 169 400 98.8 5.0mm. .002 0.74 26.7 90.4 Dissociation As it is possible to obtain a temperature of more than 2000°K in a tungsten furnace, it seemed that a sufficient amount of monatomic hydrogen could be obtained to maintain the are at the lower potentials. The furnace consisted of a cylinder of thin sheet tungsten, furnished by the General Elec- trie Company, mounted on water-cooled leads and heated by means of an electric current. A tungsten filament ran axially through the furnace and was also heated by a current. The fall of potential in the furnace and that in the filament were in the same direction and of nearly the same amount. A potential was applied between the furnace and the fila- ment, and was tried in both directions. The potential of the are was corrected to the amount 1 Nernst: Theoretical Chemistry. 2 Reiche: Ann. d Physik, 58, p. 657, 1919, and Shames: Phys. Zeits., 21, p. 41, 1920. SCIENCE 211 between the middle of the two electrodes. Gas pressures of 0.6, 0.8 mm, 1 mm, and 2 mm were used. When the furnace was not heated the are could not be maintained below the 16.4 volt point. When the temperature of the furnace was raised, a point was reached at which the are would strike at about 16.6 volts and break at about 14 volts, indicating that the increased dissociation in the are raised the percentage of monatomie gas sufficiently so that the are could be maintained to approximately the ionizing potential of the atom. At still higher furnace temperatures the are could be made to strike and break at about 13.5 volts and the results when plotted showed also unmistakable evi- dences of ionization at about 10.3 volts. Curves were obtained showing three sharp breaks in the neighborhood of 10.3, 13.2, and 16.2 volts. With the furnace at a very high temperature the are would strike at about 14 volts and break at 11 volts. It seems certain that the are struck at the ionizing potential of the atom and was maintained as low as the resonance potential of the atom. There was a considerable amount of tungsten “sputtered” on the walls of the tube, and from this it was concluded that the temperature of the furnace must have been 2000° to 2500° K. The results seem to indicate that the percentages of disso- ciated hydrogen calculated above are approxi- mately correct. These results constitute, it is believed, the first direct experimental proof of the correct- ness of the values of the radiating and ionizing potentials predicted by Bohr’s theory for the hydrogen atom, and of the interpretation of the lonizing potential of the molecule as due to its dissociation plus the ionization of one of the atoms. A complete report of these experiments will be published later. The apparatus will also be used to study the ares in other gases and for investigating the excitation of the spectra of substances at high temperatures. O. 8. DurrenBack PALMER PHYSICAL LABORATORY, PRINCETON, NEw JERSEY, JANUARY 26, 1922 212 A SIMPLE METHOD OF DEALING WITH ELECTRIFIED MICROSECTIONS ELECTRIFICATION of the sections is a frequent cause of trouble in microtomy. The sections when cut fly back into the paraffin block when the block rises for the next cut, or, if a short ribbon has already been cut, this flies to the knife, twists and curls, or “bunches up” on the knife in such a way that it is an exceedingly wearisome task to seriate the sections, and re- quires almost infinite care and patience. The causes of electrification may be various. It is owing either to atmospheric conditions or to faulty methods of infiltrating or blocking. The use of a metal drum on which the sections may be wound as cut, reduces somewhat, as is well known, the difficulty experienced because of the electrification of the sections. The suggestion of Guyer (p. 47 of his revised ed. of Animal Micrology 1917) to postpone cutting till a more favorable time is not very satisfactory to one who is compelled, because of press of time, to cut continuously. The following simple device T have used with electrified sections and have found very satisfactory. The labor of mount- ing such sections, by its use, has been very much reduced, and I believe it will be quite generally serviceable. Fig. 1 i Figures 1 and 2 show the whole device, which is adapted to any of the common types of rotary microtomes for the cutting of serial sec- tions. It consists of a thin blade of celluloid (one of the 6-inch rulers furnished by the bio- logical supply-houses does very well). This is SCIENCE [Vou. LV, No. 1417 screwed flat against the section-knife by means of the usuai knife-holding screws of the car- riage. (Fig. 2). A long narrow strip of thin, tough paper is passed up between the celluloid blade and the microtome knife, until about 3 em. of it protrudes above. After the paraffin block has been properly trimmed and adjusted to the knife, the sections are cut, and as each one is cut, it is attracted and held by the paper- strip which is pulled along with the fingers so as to produce a series. (Fig. 2). When the strip is nearly filled with sections, it is taken and fastened to the table or board with thumb- tacks, to keep it from curling, and another strip substituted. By means of this extremely simple device, the writer has found it possible to cut with ex- cellent seriation material which otherwise, ow- ing to electrification, would have been impos- sible. 8. W. GEISER ZOOLOGICAL LABORATORY, Tur JoHNS Hopkins UNIVERSITY THE AMERICAN CHEMICAL SOCIETY (Continued) INDUSTRIAL AND ENGINEERING CHEMISTRY H. D. Batcurnor, Chairmen H. HE. Howe, Secretary SYMPOSIUM ON FILTRATION D. BR. Sperry, Chairman Filter cloth and its relation to filtration: ALVIN ALLEN CAMPBELL. Filter cloth is a very im- portant consideration. Principal kinds are made of cotton, wool, jute, hemp, nickel and monel metal. Cotton duck the most used, but being replaced by materials of longer life though not necessarily better filterers. Solids really are the filter medium, the cloth is merely the retaining wall. The combination of strength, fineness and rapidity is what is wanted. Life of cloths de- pends on chemical action tending to destroy its use. Considers monel metal the best cloth mate- rial in most cases. Gives interesting list of vari- ous acids and salts and whether or not monel metal is recommended. Warns against electro- lytie action on monel cloths, citing potassium permanganate as a case in point. Gives opinion Division oF FEBRUARY 24, 1922] as to round, square or rectangular openings. Wire cloth a failure in filtering certain colors. Filter aids work well with wire cloth. Does not recom- mend that wire cloth be rolled. Filter aids: C. P. DrerurtH. The term filter aid is defined and a list of materials used for this purpose given. Materials to which the term Kieselguhr is applied are discussed. Author divides filtration problems into three classes on the basis of whether the solids in the mixture are rigid, non-rigid or a combination of the two. A discussion is given as to the manner in which a filter-aid may be used and the advantages accru- ing therefrom, in each of the three cases. Desir- able characteristics in filter-aids is given. Filter- aids are said to improve clarity of filtrate, reduce power consumption, reduce loss of liquid in cake, reduce labor in cleaning cloths, increase life of cloths, and increase rate of flow. The feeding of filters: J. F. Sprincer. Defines ‘‘feeding’’ as consisting of the transmission under pressure of the unfiltered liquor from a point where it is received from storage to the inlet aperture of the filter. Necessary equipment is pipe-line, pump and power. Suggests that in order to keep pump and valves clean from solids, precipitation of the solids when possible ought to be done either in filter or between pump and filter. Suggests possibility of solids being dis- solved before reaching pump and then again pre- cipitated between pump and filter. Describes feeding devices made of various materials and the corrosive action of certain substances there- on. Discusses suction, gravity and pressure feeding and appropriate apparatus. Steam, power-reciprocating, centrifugal pumps and montejus are dealt with. Fundamental laws of filtration with sugges- tions regarding research work: D. R. SPERRY. The writer develops a formula which is a state- ment of the fundamental laws governing filtra- tion. This is done to form a foundation upon which filtration may be put upon a scientific basis. Definitions of filtration, porous mass, filter-base and filter are given. Three indispen- sable conditions of filtration are difference in pressure between the two sides of the porous mass, a filter base and a filter. A study is made of the phenomena of filtration and it is found that the rate of flow of filtrate at any instant equals the rate of flow through the cake at that instant were there only liquid above the cake. With this as a basis a study is made separately of the laws of flow through cake and the laws of building up of cakes. The two expressions are SCIENCE 213 combined into one which is the fundamental law of filtration as follows: Q = WPT + N2 —N he WP (for constant pressure conditions); Q—= —— — 2M M . sys (for constant discharge conditions) ; 2 where Q = total discharge, P — pressure, T — time, R = resistance of cake, Rm — resistance of porous mass, ¢/o — per cent. of solids, M — con- stant discharge rate, K — rate of disposition, 2K KRm WY = Ro’ Ne= Re Units for measuring K, the rate of deposition, and R, the resistance of cake, is given. A list of research suggestions follows. Washing filter presses: Bustack A. ALLIOTT. Washing is used to recover a valuable liquor from the solid particles which retain it or to free such particles from impurities dissolved in the adher- ing liquor. Generally wash water ought to be as little diluted as possible; hence the smallest quantity should be used. Adsorption, capillary diffusion, formation of chemical compounds, and colloid formation on removal of electrolytes are disturbing factors in washing. Each of these factors is discussed. Simple washing involves too much space and care. For best washing results plate and frame type filters should be used with thorough washing. Air vents should be provided at top of wash chambers, wash must leave at top of press and enter at bottom. Considers various mechanical appliances for washing, hydrometer bowls, wash pumps, and montejus. Under ideal conditions wash equal to one displacement volume should effect complete washing. A number of washing results is given from actual practice, showing displacements volumes of 1.6 to 5.5. Describes stage washing. Gives a number of interesting wash curves, and cuts of mechanical appliances for washing. Pulp or filtermasse filters: E. KE. Frncu. Divides filters into two classes—those whose pri- mary purpose is for clarification and those for retaining solids. The pulp filter belongs to the first class and uses cellulose as a filtering medium. Gives a short history of the pulp filter. Origin was probably in Germany. Gives a list of various substances used as a filter-masse with appropriate remarks. Concludes pure cotton masse the best. Describes method of preparing and using filter- masse. Pulp filters can be constructed for handling liquids which must not touch the ordi- nary metals. Discusses advantages of a clear product for manufacturer. Filtration in pulp 214 filters is a violent agitation which may cause pre- cipitation requiring re-filtration. Gives methods of treating liquids by pasteurizing, chilling or settling. Mentions filtration of glue and gelatine. Atkins-Shriver automatic filter press: H. D. Arxins. This apparatus is a modified form of a round, center-feed filter press. A shaft passes through the center openings, on which is mounted plows, one in each chamber. The press is mount- ed on trunnions and is filled in the vertical posi- tion. When filled the shaft is rotated and the plow by moving in a spiral manner peels off the cake from the chambers. The cake pieces fall out of the press through the central openings. The plows do not remove all the cake but leave a thin layer on the cloths. If it is desired to remove this layer it may be sluiced off. For assembling and clothing the press is swung into the horizontal position. Washing may be done in the press. Claim is made that this press saves wear and tear on cloths, saves labor, washes thoroughly, and is well adapted to arrangements to carry away cake. This type of press costs more than the ordinary filter press per unit of filtering area. Vallez rotary filter: H. A. VaLLEz. This appa- ratus consists of a cast-iron cylinder so made that by removing bolts it can be split lengthwise dis- closing a hollow shaft on which is mounted the filter leaves. Filtrate from leaves is drawn away through center of shaft. When cylinder halves are bolted together the material to be filtered is pumped into the interior under pressure, causing filtrate to issue from shaft. Filter surfaces may be sluiced off. Extra shafts with leaves may be kept to facilitate repairs. Leaves are spaced 244, 3 or 6 inches apart. A screw conveyor at bottom of cylinder removes the solids, which drop off the leaves when pressure is relieved or a back air pressure applied. Claim is made that the rotation of leaves while filtering causes even depth of solids, indicating uniform washing. Used in sugar factories. Centrifugal filters: H. C. Beckman. There are two classes of centrifugal filters, those in which the drum is perforated and those in which the drum is imperforated. The first class is used largely in sugar factories. Experiments have been made in which filter paper or cloth is used over perforations. Has no advantage over ordi- nary pressure filter and several disadvantages. Centrifugals of the second class use filter paper and act in a measure as a self cleaning filter due to the fact that the solids are discharged from SCIENCE [Vou. LV, No. 1417 the discs by centrifugal force. Due to this fact small areas have large capacity. A disadvantage is the smallness of size. A ten-inch drum eight inches high with twenty seven-inch filter plates operating at 6,000 R.P.M. is the largest size found commercially practical. Costly liquids like physiological serums, expensive varnishes, etc., are handled by centrifugal filters. Maintenance and upkeep are nominal. Largest size requires about two H.P. and about four square feet floor space. Modern leaf type filters: Roprrt C. CAMPBELL. Description is made of Kelly and Sweetland leaf filters. Operating instructions for complete cycle are given. Washing is effected by stopping formation of cake while there is yet space be- tween adjacent leaves. Highty-five to 125 per cent. of the weight of discharged cakes is required for complete washing. A disc filter of the continuous suction type in which discs are mounted on a rotating shaft which allows them to dip into the mixture to be filtered is described. Pressure dise filters are suitable for handling sludges. Containing from less than one per cent. of suspended solids to the highest per cent. of solids which can be conveniently pumped and drained from filter. By use of Kisselguhr col- loidal or gummy solids may be handled. Suction disc filters are recommended for sludges contain- ing over 10 per cent. of comparatively free filter- ing solids wherein a cake of greater than one fourth inch thickness may be built in from one to eight minutes. Average capacity of suction filters is from 300 to 700 pounds of dry solids per square foot filter area per 24-hour day. Data is given regarding size of airand sludge pumps for pressure or suction dise filters, also water required for sluicing. When suspended particles are soft and compressible the plate and frame filter will produce a drier cake than leaf filters. Claims leaf filters have lower cloth consumption than plate and frame filters. Oliver continuous filters: H. A. Morrison. (1) Types manufactured—being a brief descrip- tion of the individual kinds made. (2) General principles involved—covering the use of the con- tinuous vacuum filter. (3) Characteristics to be considered in filter applications. (4) Uses— with generalized statement of the more important fields of operation and special description of the unusual problems we have solved. (5) Installa- tion and operating costs—showing complete installation and operating costs in detail. (6) Ad- vantages—realized by use of continuous vacuum filters as compared with plate and frame presses Frsruary 24, 1922] and other intermittent types. (7) Limitations and disadvantages. Suction filtration: G. D. Dickey. After a brief outline of the development of suction filtration, there are taken up the four main points of inter- est to filtration operators, viz.: Cake formation, washing, drying, and discharge. Under ‘‘Cake Formation,’’ there is discussed the various fac- tors which modify cake building in suction appa- ratus. Examples are cited as to capacities and rates of flow of specific materials under varying conditions, which will illustrate the influence that these conditions exert over the deposit of the filter cake. Following the discussion of the filter cake comes that of washing of the cake, which of course is dependent upon the formation of the cake itself, but which can be greatly aided or hindered by the filter operator. The discus- sion of cake drying and discharge is also based primarily upon the cake formation, but allows of many modifications before obtaining the desired results. Next there is given a brief description of the construction and operation of the open tank type of filter, the continuous rotary filter, and the continuous rotary hopper dewaterer, together with the advantages and disadvantages of each type. A number of lantern slides have been pro- vided, so that the discussion of the construction and operation can be illustrated. In conclusion, there is given specific data as to the handling of a number of materials by the three types of apparatus above mentioned. Industrial filter media: ARTHUR WRIGHT. De- fines industrial filtration as the separation of a comparatively large amount of solids from small volumes of liquid, hence small rates of flow are permissible and filter cloths used as contrasted with the municipal filtration where gravel beds are used and conditions are the opposite. Selec- tion of filter fabric depends upon whether for non-corrosive or corrosive liquors. For the latter, wool, metal, asbestos, stone, etc., is used, while for the former, cotton is used. Describes various weaves of cotton and its use. Fabric filtration should be of surface type, and not bed filtration where solids enter interior of the medium as in loose thick duck. Suggest superficial layer of thin muslin to prevent bed action, permitting cake to fall off easily. In certain kinds of filters the cloth porosity must be of definite kind to permit use of back pressure. Cake adheres more strongly to unnapped cloth. Discusses drainage provided under cloths. Precoating cloths should be used where initial filtrate must be clear. Shrinkage and stretch of cloth is considered. SCIENCE 215 Mentions incrustation due to lowering pressure and suggests action to be taken. The use of filter-cel for industrial filtration processes: G. M. Hickey. Filter-Cel, a porous cellular product, is used as a filter aid, by mixing a small percentage with the liquor prior to filtra- tion, overcoming slimes and giving brilliant fil- trates. In cereal beverage filtration, addition of one fourth pound of Filter-Cel per barrel insures complete removal of yeast cells, gives brilliant product and permits use of modern pressure filters. In crude and refined vegetable oils it aids in the removal of foots, soaps and slimes, giving clearer filtrates that requires less bleach for refining. When mixed with the bleaching agent, it increases the capacity of filter and gives dryer cakes. Apple products and fruit juices are mechanically clarified by filtration with small quantities of Filter-Cel. Soap lyes and fats are clarified using one per cent of Filter-Cel, improving filtration and the quality of by-products. Catalytic agents from hydrogena- tion processes are completely removed by filtering with Filter-Cel. Plate and frame filter presses: G. B. Ricz. The filter press includes a large filter area in a small floor space, high pressure can be used, the appa- ratus is simple, unskilled labor only is required for operation, and repairs are quickly made. Considers the plate and frame type the best form of filter press. Describes washing and various combinations used in filter presses. Filter presses can be made of various materials, as iron, for ordinary materials, wood for weak acid liquors, lead for strong sulphurie acid. For wooden plates resinous woods are best, as yellow pine; such wood will stand 25 per cent. cold HCl. Hot solutions tend to destroy the resin, so for that purpose maple or oak is best. Describes opera- tion and storage of wood presses. Discusses filter plate surfaces, closing gears, and filter cloths. For most aqueous solutions, cotton cloths are good, but for strong acid solutions asbestos, wool or camel’s hair cloth is suitable. Wire cloths made of monel metal, copper, nickel and bronze can be used. The filter press: D. R. Sperry. The filter press is defined as a press employed for holding to- gether the component parts of a filter. The com- ‘ponent parts of the filter consist of plates or plates and frames. The filter press is described by aid of illustrations. Recessed and flush plate and frame operation is defined. Filter plates and frames may be made of various materials to suit the substance handled. This is also true of filter- 216 bases. A discussion of plate surfaces tends to show that correct design should be for long wear of cloth and proper drainage. Also that the con- tact area of the cloth does not reduce the net filtering area as might be supposed. The filter press comprises most filter area per unit of floor space, can employ high pressures, has low repair costs, produces the driest cake, is economical in clothing, ean be operated by cheap labor and is the most universal and widely used filter appara- tus to-day. Eleven plant installation views are given. A symposium on the chemistry of gases and fuel was also held with C. H. Stone chairman and R. S. McBride-secretary. The following four major subjects were discussed: (a) Coke-oven problems, discussion to be opened by W. H. Buiauvett, F. W. Sprerr and others. (b) Low temperature carbonization of coal, discussion to be opened by H. ©. Porrer. (c) Gas works control, discussion to be opened by E. C. Unuic, J. R. CAMPBELL and O. A. Mor- HOUS. (d) Gas analysis and its applications, discus- sion to be opened by G. W. Jones, E. R. WEAVER and A. H. WHITE. Two new methods for determining light oil in coke oven gas: ArtHUR L. Davis. The most accurate and thoroughly reliable method that has been developed to the present time utilizes acti- vated carbon as the absorbing medium. Absorp- tion of the light oil is rapid and the carbon is very convenient to handle. The absorbed light oil is removed by distillation of the enriched carbon with cresol and the subsequent treatment of the distillate with caustic. The true light oil recovered, uncontaminated with wash oil, may be examined and its quality determined. A very satisfactory means of absorbing light oil is to pass the gas through a plate and bell tower, lab- oratory size, using cresol as the absorbing medi- um. A tower of this type is imperative since incomplete absorption will be obtained using other than this general type of equipment when any liquid absorbent is used. The eresol is stripped of the light oil and the distillate agi- tated with caustic. The light oil obtained is true light oil with no high boiling ends due to the lower boiling portions of wash oil being present. Standardizing gas combustion by premixing portions of air with gas: N. H. GELLER. A chemically controlled automobile: GnorcE G. Brown, Jr. The average motor ear wastes twice SCIENCE [Vou. LV, No. 1417 as much energy as is converted into useful work. The thermal efficiency averages not over 15 per cent. This loss, entirely preventable, is a waste of a valuable and limited natural resource, petro- leum. In all industrial combustion problems increased efficiency can be obtained by returning as much heat as possible from the exhaust gases to the combustion zone by preheating the air. Another factor, known as turbulence, which results from the velocity of the mixture entering the cylinder, has an equally noticeable effect upon the rate of combustion. Repeated tests have shown that 30, 35, 40 miles per gallon and even more may be obtained driving at constant speed along a level highway and burning a lean hot mixture. It has been found that the two variables, temperature of air and manifold suc- tion, are sufficient in themselves to supply all the automatie control desired. Working along these lines a carbureter has been designed from a scien- tific and mathematical standpoint that can be made to deliver a mixture of any proportions desired under any conditions. It has been found possible to obtain 35 to 40 miles per gallon on a standard Ford touring car with equally quick acceleration and even more flexibility than could be obtained with standard equipment giving 20 miles per gallon under the same conditions. Theoretical maximum temperature: GEORGE G. Brown, Jr. (1) A comparison of the values for specific heats of the products of combustion as obtained by the various investigators. (2) Cal- culation of maximum temperatures using a table of mean specific heats, or thermal capacities: a. Estimating temperatures and solving by trial and error; b. The graphical method of Damour. (3) Caleulation of maximum temperature using the equations for thermal capacities: a. Alge- braic solution; b. Slide rule solution; c. Graph- ical solution. The formation of oxides of nitrogen im the slow combustion and explosion methods in gas analysis: G. W. JoNES and W. L. Parker. Pro- cedure and results of investigation are given showing the amounts of oxides of nitrogen formed when gases are analyzed by the slow combustion and explosion method. The following conclusions were obtained: The production of oxides of nitrogen by the slow combustion method when the time of burning is not more than three minutes and the wire heated not greater than a bright yellow is within the experimental error in routine gas analysis. Under the above conditions not more than .003 e.c. of oxides of nitrogen - tion. FuBrvary 24, 1922] were produced by the explosion method when air was used as the oxygen supply. When mixtures of air and oxygen were used as the oxygen supply in the explosion method appreciable quantities of oxides of nitrogen were produced which are too large to be disregarded in gas analysis. The method used for determining the quantity of oxides of nitrogen produced was a modification of the di-phenol sulphonic acid method as used in water analysis. The present status of methods used for fuel gas analysis: G. W. Jones. The constituents present and difficulties encountered in the accu- rate analysis of fuel gases are given. The meth- ods used at the present time, considerations which must be taken into account in choosing a particular method, the comparative accuracy of the different methods and debatable points which require further consideration are discussed. Electric heat for thermal processes: HE. F. COLLINS. Humidity equilibria of various common mate- rials: Ropert E. Wiuson. A knowledge of the equilibrium amount of moisture held by various materials as a function of the relative humidity of the air is very important for a variety of purposes. The author presents determinations by a method previously described in the Journal, of the humidity equilibria of the following mate- rials: cotton, linen, paper, jute, hemp, viscose silk, cellulose nitrate silk, cellulose acetate silk, tubber, leather, feathers, catgut, tobacco, crack- ers, bread, macaroni, ete.; and includes data gathered from various sources on other materials, such as wool, silk, paper half-stuffs, timber, flour, ete. The frictional resistance to the flow of viscous liquids through elbows: Robert E. Witson, WIL- LIAM H. McApAMs and M. Srurzer. The fric- tional resistance to the flow of liquids through elbows has been the subject of a considerable number of scattered experiments, but the results are seldom expressed on any uniform basis and in many eases the methods of measurement were faulty. Furthermore, there is practically no data on the frictional resistance to flow through elbows for very heavy oils flowing in straight line mo- The authors present a series of data cover- ing the whole range, from highly viscous oils to water, and show that, while the customary rule of assuming an elbow to be equivalent to thirty or forty pipe diameters’ length of straight pipe holds very well over the whole region of turbulent flow, the resulting correction is far too high in the region of viscous flow, dropping to as low as SCIENCE 217 two or three diameters for very viscous liquids in small pipes. A fermentation process for the production of acetone, alcohol and volatile acids from corn cobs: W. H. Prererson and E. B. Frep. Corn cobs are a possible raw material for the production of acetone, ethyl alcohol, formic acid and acetic acid. These products are obtained by fermenting a sirup which is made from corn cobs by hydrolysis with dilute sulfuric acid and contains chiefly xylose. This crude xylose sirup is fer- mented by Bacillus acetoethylicum under the proper conditions of nitrogen, and phosphate supply and hydrogen ion reaction. A continuous fermentation is maintained by filling the con- tainer with cinders to which the bacteria may attach themselves. The fermented solution is removed and a new sugar solution added without disturbing the bacteria. Under these conditions the fermentation is rapid and vigorous. The yield of products is 2.7 Ibs. of acetone, 6.8 Ibs. of alcohol and 3.4 Ibs. of acid per 100 lbs. of corn cobs. A new method of preparing sulphuric acid: P. C. Hansever. Instead of oxidizing SO, with the oxide of nitrogen, selenium dioxide is used according to the equation: 280, + H,0 ae H,SeO, = 2H,SO, + Se. The selenium is filtered and reoxidized. A 50 per cent sulphuric acid free of selenium can thus be obtained without pressure. Anode slimes and other im- pure selenium sources can be used for the source of selenium, as roasting the same will yield an oxide sufficiently pure for the above reaction. Corrosion under oil films and the protective action of certain colloidal solutions: Witpert J. Hurr. An investigation by the writer in the research laboratories of the Bureau of Mines on the subject of corrosion beneath oil films caused by water soluble salts from perspiration residues, sea sprays, and certain manufacturing operations. Preliminary treatment with water, followed by a suitable emulsion, and finally by oil is recom- mended for inaccessible surfaces. Experiments are given to show the valuable anti-corrosive property of certain soap emulsions, and some of the conditions under which this protective prop- erty fails. The mechanism of the corrosion and protection is discussed briefly. On the dehydration of tar and other organic emulsions: WitBrrT J. Hurr. A note discussing some of the methods for the dehydration of tar and similar emulsions, pointing out a few ad- vantages and disadvantages of each, together with a description of a method suggested by the 218 author and now used in the laboratories of The Koppers Company. The tar is simultaneously heated from above and cooled by a jacket of liquid water about and below. The jacket water is allowed to fall by evaporation, gradually bringing more and more tar into the heated zone. The manipulation is so simple the author finds it difficult to believe that the method has not been used before, but if so is unaware of such use. The method permits the simultaneous approxi- mate determination of light oil and water, requires no new apparatus and practically no attention, and handles efficiently very stiff tars and tars of high water content. The arc rupture of liquid dielectrics: C. J. RopMAN. Various organic liquid dielectries were subjected to high frequency arcing. Finely divided, highly non-conducting amorphous carbon, saturated and unsaturated hydrocarbons lower in the series, and a number of gases were obtained. These gases consisted chiefly of hydrogen and unsaturates with small amounts of carbon mon- oxide, carbon dioxide, methane and nitrogen. With an increase in molecular weight a slight decrease in gas evolution per kilowatt seconds of are rupture was noted. With an increase of halogenation a corresponding decrease in gas evolution per kilowatt seconds are rupture is noted. Paraffine oils give approximately 60 cc. gas per kilowatt seconds. The liquid dielectrics are apparently broken down by a temperature pressure effect of very short duration, rather than by sympathetic vibration and rearrangement of the compounds by high frequency alone. Direct application of this data is found in the use of compounded liquid dielectrics for transformers, circuit breakers and fuses. The effects of waterproofing materials upon the tensile strength of cotton yarn: H. P. Hot- MAN and T. D. JARRELL. Two sizes of cotton yarn used in the manufacture of high grade cotton ducks, after treatment with numerous waterproofing materials including commercial preparations, individual substances and formulas developed in the laboratory, were exposed to the weather for one year to show the effects on ten- sile strength. The tensile strength of the treated yarn after one year’s exposure was in most cases greater than the strength of the untreated yarn after one year’s exposure. Special order on world’s standardization: E. C. BryeHaM, chairman. The attitude of the manufacturer of reagent chemicals toward world standardization. The attitude of the dealers in SCIENCE [Vou. LV, No. 1417 chemicals. The attitude of the university users of chemicals. The attitude of the technical users of chemicals. The attitude of Great Britain and Canada toward world standardization. The atti- tude of the federal government. Discussion led by CHARLES L. Rees, W. A. Noyes, B. L. Mur- RAY, R. F. Rutrran, H. D. Husparp and others. The nature of acid mine water from coal mines and the determination of acidity: W. A. SELvig and W. C. Ratcuirr. Water from coal mines is usually decidedly acid in character containing free sulphuric acid and ferrous, ferric and alum- inum sulphates in addition to sulphates of cal- cium, magnesium, sodium and potassium together with silica and usually some chlorides. On stand- ing, dilution, aeration or warming insoluble iron compounds tend to precipitate. The direct titra- tion of free sulphuric acid of mine water with standard alkali solutions in the presence of methyl orange gives results much too high. Methods of accurate determination of contents of mine water are given. Tests of the iodine pentoxide indicator for car- bon monoxide: 8S. H. Karz and J. J. BLOOMFIELD. The iodine pentoxide or ‘‘hoolamite’’ indicator for carbon monoxide is a small, rugged, portable instrument for quickly and easily indicating the presence of carbon monoxide and estimating its concentration. Commericial instruments were tested for sensitivity and accuracy. Results showed that the instrument gives positively indi- cations with .07 per cent. or more carbon mon- oxide in air. With .15 per cent. carbon monoxide in air, determinations ranged from .10 to .23 per cent. with an average of .16. With higher con- centrations, the variations were proportionally about the same. Fresh activated charcoal re- moves the following gases that tend to give inter- ference: acetylene, ammonia, benzene, ether, ethylene, gasoline, hydrogen chloride, hydrogen sulphide, natural gas containing members higher than methane, and water. The following gases do not interfere: carbon dioxide, carbon tetra- chloride, chlorine, methane, nitrogen peroxide, phosgene, and sulfur dioxide. Determinations are made in less than one minute and no skill is required. The instrument should prove valuable in testing air in mine reseue and recovery opera- tions around blast furnaces, gas producers, water gas plants, flue gases and other places where carbon monoxide occurs. The Berrigan filter (By title): Mr. Stark. CHaRLes L. Parsons, Secretary SCIENCE New. SERIES 2 ‘ 99 SINGLE Copigs, 15 Cts. Vou. LV, No. 1418 Fripay, Marcu 3, 1922 ANNUAL SUBSCRIPTION, $6.00 Saunders Books Willius’ Electrocardiography IUST OUT This book presents the subject in a logical way, considering the fundamentals, the technic of obtaining records, disorders of the cardiac mechanism, organic and functional, and the facts regarding prognosis. Octavo of 188 pages, with 186 illustrations. By F. A. Wittius, M.D.. Associate in Section of Division of Medicine, The Mayo Clinic, Rochester, Minn. Cloth, $5.00 net. Lusk’s Science of Nutrition SHR TSIEN Professor Lusk points out why certain diseases are due to metabolic derangements. He teaches you how to correct these derangements. He gives you the very foundation of dietetics —the fundamentals upon which a scientific and beneficial dietary regimen may be built. Important chapters are those on food economics, food requirements for various occupa- tions, etc. Octavo of 640 pages. By Granam Lusk, Pu.D., Professor of Physiology, Cornell Medical School. Cloth, $6.50 net. If y) = Wells’ Chemical Pathology OU E REE OTE This work considers pathology from the standpoint of the chemical processes involved. It deals: with the chemical changes that take place in pathologic conditions. It treats of the causes of disease and so provides the first step in their treatment. Octavo of 695 pages. By H. Giweon Wetts, M.D., Ph.D., Professor of Pathology, University of Chicago. Cloth, $7.00 net. e 9 ° Brill’s Psycho-analysis . JUST OUT To this edition have been added new chapters on masturbation, paraphrenia, and homo- sexuality. The entire book has virtually been rewritten, necessitating its resetting. Based on many years of close application to the study of psychopathology. Octavo of 468 pages. By A. A. Britt, M.D., Lecturer on Psycho-analysis, New York University. Cloth, $5.00 net. Dercum’s Physiology of Mind JUSE QUT. 5 < Dr. Dercum’s new work discusses the subject from biologic, morphologic, p Saab ati dach dithity Re cal viewpoints. It is a summary of his many years of observation. nde addenda are ancholia, ete. 12mo of 150 pages. Please send me the books checked (V) and charge to my account :— Willius’ Electrocardiography...... $5.00 net. Wells’ Chemical Pathology........ $7.00 net. Lusk’s Science of Nutrition....... $6.50 net. Brill’s Psycho-analysis............ $5.00 net. Dercumesmelhystolosy morbid sysciia seem seers oeeeeeteleelsts DN ae a ii SCIENCE—ADVERTISEMENTS ISIS International Review devoted to the History of Science and Civilization Edited by GEORGE SARTON, D.Sc. Associate of the Carnegie Institution 24 Agassiz Street, Cambridge, Mass. The chief feature of Isis is a Critical Bib- liography of the History and Philosophy of Science and of the History of Civilization. The three first volumes (1882 pages) con- tain about 5,620 bibliographic notes, 312 re- views and 43 longer papers. 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Lagai, Ph.D. New York City SCIENC A Weekly Journal devoted to the Advancement of Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS ti Liberty St., Utica, N. Y. Garrison, N. Y. New York City: Grand Central Terminal Single Copies, 15 Cts. Annual Subscription, $6.00 Entered as second-class matter January 21. 1922, at the Post Office at Utica, N. Y.. under the Act of March 3, 1879. Marca 3, 1922 Vou. LV No. 1418 The American Association for the Advance- ment of Science: Atomic Nuclei: Proressor J. C. McLeEn- VAIN see es cca ES TE eld a re ae SR 219 Progress in Metric Standardization: Dr. HUGENE | C.) BINGHAM on ee 232 The Banding of Birds: CHARLES L. WHITTLE 233 Scientific Events: Conference on Business Training of the Engineer and Engineering Training for Students of Business; Gift of the Rocke- feller Foundation for a School of Hygiene in London; Lectures on Chemical Engi- neering; The Sheldon Memorial; The Ramsay Memorial Fellowship...........-.....------ 234 Scientific: Notes and News: 222. 237 University and Educational Notes................... 240 Discussion and Correspondence: Duty on English Books: Prorrssor G. D. Harris. Alternate Bearing of Fruit Trees: Dr. Harotp B. Tuxny. The Writing of Popular Science: Dr. Epwin E. Stosson.... 240 Quotations : William Jennings Bryan on Evolution........ 242 Scientific Books: Clarke on James Hall of Albany: Pro- FESSOR CHARLES SCHUCHERT....-...0000002000... 243 Special Articles: The Synthesis of Full Coloration in Phlox: TDN Dey el) 18 GS ye Ne I 245 The Proposed Federation of Biological Socie- ties: Proressor A. FRANKLIN SHULL.......... 245 ATOMIC NUCLEP I. INTRODUCTION THE conception that atoms consisted of cen- tral positively charged nuclei of small dimen- sions surrounded by one or more systems of electrons whose aggregate charge of negative electricity exactly neutralized the nuclear posi- tive charge, arose in an attempt by Rutherford? to explain the large angle scattering of « rays obtained when these traversed thin foils or sheets of various metals. To account for the results obtained it was found necessary to assume that the positively charged nucleus contained nearly all the mass of an atom and that the dimensions of the nucleus were very small compared with the ordinarily accepted magnitude of the diameter of the atom. On this view the electric field close to the nucleus was very intense and therefore suffi- cient to deflect « particles which in traversing sheets of metal happened to pass close to nuclei. Assuming the electric field of nuclei to be central and to follow the inverse square law, Rutherford showed that an « particle pro- jected so as to pass close to the nucleus of an atom would describe a hyperbolic orbit about the nucleus and that the magnitude of the deflection impressed upon it was determined by the closeness of its approach to the nucleus. (a) The electric charge on nuclei. On this theory Rutherford showed by deduc- tions made from observations on the single encounter large angle scattering of « rays that the resultant charge on the nucleus was about 72 A e where A is the atomic weight of the 1 Address of the vice-president and chairman of Section B—Physies, the American Association for the Advancement of Science, Toronto, De- cember 29, 1921. ? Rutherford, Phil. Mag., Vol. 21, p. 669, 1911; Phil. Mag., Vol. 27, p. 448, 1914. 220 scattering element and e is the fundamental unit of electric charge. Hlaborate experiments by Geiger and Marsden® on the scattering of #% rays confirmed this view. The validity of the theory was also established in a convincing manner by C. G. Darwin* who made a thorough mathematical investigation of the deflexions which could ensue from an intimate encounter between an alpha particle in motion and a nucleus. In this investigation he showed that the results of the scattering experiments of Geiger and Marsden could not be reconciled with any law of central force except that of the inverse square. In another entirely different field of investi- gation, namely, that of the scattering of X rays by lght elements, Barkla® had shown in 1911 that the number of electrons in an atom which took part in the scattering of the X rays was equal to about one half of the atomic weight of the element. Both lines of investigation therefore led to the view that the charge on the nucleus of an atom was given by % A e and that the number of electrons in an atom surrounding the nucleus was % A. It was the experiments on the scat- tering of « rays, however, which led to the view that the positively charged portions of atoms were nuclear in character with dimen- sions small compared with those of the atoms themselves, and that by far the greater part of the mass of the atoms was concentrated in the nucleus. (b) Nuclear charge and atomic number. In 1913 Van den Broeck® put forward the suggestion that the scattering of « particles was not inconsistent with the view that the charge on the nucleus of an atom was equal to Ne where N is the atomic number of the atom of the element concerned, 7. e., the number of the element when the elements are arranged in order of increasing atomic weight. A refer- ence to a table of atomic weights will show that N is approximately equal to % A. The 3 Geiger and Marsden, Roy. Soc. Proc. A., Vol. 82, p. 495, 1909. 4 Darwin, Phil. Mag., Vol. 27, p. 499, 1914. 5 Barkla, Phil. Mag., Vol. 21, p. 648, 1911. 6 Van den Broeck, Phys. Zeit., Vol. 14, p. 708, 1914. SCIENCE [Von. LV, No. 1418 importance of this suggestion was soon made evident by the remarkable work of Moseley’ on X ray spectra which followed in 1913 and in 1914. In this work Moseley showed that the frequencies of the vibrations of correspond- ing lines in the X ray spectra of the elements depended on the squares of numbers which varied by unity with the successive elements. This relation, it was seen, could be readily explained by assuming that the nuclear charge of an atom varied by unity in passing from an atom of one element to that of another, and by assuming that the nuclear charge was given numerically by N, the atomic number. The importance of Moseley’s work was enhanced when it was seen that it gave us a new method of regarding the periodic classi- fication of the elements based on the assump- tion that the atomic number or its equivalent, the nuclear charge, was of more fundamental importance than the atomic weight. As a result of Moseley’s work it became possible not only to fix definitely the number of pos- sible elements and the position of undeter- mined elements, but also to show that the properties of an atom were defined by a num- ber which varied by unity in successive elements. In Moseley’s work the frequency of vibration of corresponding lines in the K ray spectra of the elements was not found to be exactly pro- portional to N? where N is the atomic number but to (N—a)? where a was a constant which had different values depending on whether the IX or L series of characteristic rays was measured. The investigations of Bohr® on the origin of radiations emitted by atoms are entirely in keeping with the assumptions that the nuclear charge is given by Ne, for he has shown that the frequency formula for X ray spectral lines must inelude a term (N —a)? with “a” having values approximately equal to those found by Moseley. In Bohr’s investigation he showed that X rays originated in disturbances given to certain classes of extra nuclear electrons and that the quantity “a” represented a modifi- 7 Moseley, Phil. Mag., Vol. 26, p. 1024, 1913; Phil. Mag., Vol. 27, p. 703, 1914. 8 Bohr, Phil. Mag., Vol. 26, p. 476, Sept., 1913. Marcu 3, 1922] cation of the electric field of the nucleus by the electric fields of the extra nuclear electrons within the atom. II. Own tHe Structure or Atoms Through the advances made by a study of the scattering of « rays and of X rays the attack on the problem of the structure of atoms and the origin of radiations naturally proceeded upon two well-defined lines, namely: 1. The investigation of the constitution and properties of the nucleus, and 2. The investigation of the configuration and modes of vibration of extra nuclear elec- trons in atoms. In pursuing this attack it has been assumed, with very good warrant, that the positive elec- trie charges on nuclei are given by Ne where N is the atomie number of the element con- cerned, and that the number of extra nuclear electrons in an atom is N. For example, the number of extra nuclear electrons in various atoms is taken to be as follows: Hydrogen 1, helium 2, lithium 3, carbon 6, fluorine 9, neon 10, sodium 11, chlorine 17, argon 18, potas- sium 19, ete. III. Postrive Ray ANALYSIS This method of analysis was devised by Sir J. J. Thomson® and consisted in projecting successively through an electric and a magnetic field positively charged atoms or molecules, i. e., those from which one or more extra nuclear electrons had been detached. By this means he was able to show that positive atom ions can be obtained with one, two, three, and, in the case of mercury, with eight positive elemental charges. Among other results he has been able to show that such compounds as CH, CH, and CH, can exist with a recognisable though transitory existence. He has also shown that a substance having the molecular formula H, and bearing a single positive elemental charge can be obtained from various sources, a result which has been confirmed by Dempster, who showed that this molecular aggregate can be obtained with a transitory existence when an 9J. J. Thomson: Rays of positive electricity. SCIENCE 221 electric charge is passed through hydrogen. Perhaps the most notable discovery made by Thomson, however, was that neon existed in two forms with identical chemical properties, but with different integral atomie weights, namely, 20 and 22. This discovery was of prime importance for it poimted to the probability of the general applicability of the principle which had been already found by Soddy and others to hold with the radioactive elements, namely, that the atoms of elements consist of csotopes, i. e., that we have atoms of an element with identical chemical properties, but with different atomic masses. This discovery also offered an explan- ation of the non-integral values found by chemical analysis for the atomic weights of many of the elements. If it turned out, assum- ing the atomic weight of oxygen to*be 16, that the atomic weights of the isotopes of an ele- ment were integers, then the non-integral value found by chemical analysis for the atomic weight of an element would result from the element existing as a mixture of its isotopes. IV. Isoroprs Aston,'® Dempster,'t and later G. P. Thom- son’? have recently greatly improved Sir J. J. Thomson’s methods of positive ray analysis with the result that they have been able to separate many of the elements of non-integral atomie weight such as chlorine, magnesium, argon and mereury into isotopes, each of which has an integral value for its mass. Chlorine, for example, has an atomic weight of 35.5 and can be separated by the positive ray method into an isotope of weight 35, and into one of weight 37. The validity of this result has been confirmed by Harkins,'!* who succeeded 10 Aston, Phil. Mag., Vol. 38, p. 707, 1919; Vol. 39, p. 611, 1920; Vol. 40, p. 628, 1920; Nature, March 17, 1921; May 12, 1921. 11 Dempster, Phys. Rev., Vol XI, No. 4, p. 316, 1918; Scimncr, Dec. 10, 1920; Apr. 15, 1921; Nov. 25, 1921. 12G. P. Thomson, Phil. Mag., Aug., 1920, p. 240; Phil. Mag., Nov. 1921, p. 858; Nature, Feb. 24, 1921. 13 Harkins, Science, March 19, 1920. 222 in separating, by diffusion, a mass of chlorine into two portions with different densities. Mercury, too, has been found by positive ray analysis to consist of a number of isotopes, probably six, with integral atomic weights 197-200, 202, 204. As a confirmation of this result Bronsted and Hevesy* have shown that it is possible by fractional distillation to sep- arate mercury into two parts with different densities. The list of the elements in so far as they have been investigated for isotopes is given in Table I. In Table II following there is also assembled the isotopes of the various radio- active elements. TABLE I IsoroPEs Masses of | Minimum |isotopes in Element | At. No. | At. Wt. | No. of order of é Isotopes |their inten- sity TeGe ul teue ha 1.008 1 | 1.008 He | 2 3.99 1 4.0 Li 3 6.94 2 7, 6 ‘Berea Ay abo sl: 1 9 B lant a5 10.9 2 11, 10 C We in el 220 1 12 N 7 14.01 1 14 O 8 16 1 16 NM Oa Lo 1 19 Ne 10 20.2 2 20, 22, 21? Na 11 238 1 23 Mg 12 24.32 3 24, 25, 26 Si 14 28.3 2 28, 29, 30? 1p 15 31.04 1 31 tS} 16 32.06 aL 32 Cl 17 35.46 2 35, 37, 392 A 18 39.88 2 40, 36 K 19 39.1 2 39, 41 Ca 20 40.09 1 40 (39, 40, 41 Zn 30 65.4 4 64, 66, 68, 70 As 33 74.96 1 75 Br 35 79.92 2 79, 81 Kr 36 82.92 6 84, 86, 82, | 83, 80, 78 Rb 37 85.45 2 85, 87 Sr 38 87.63 2 87, 85, 88? I 53 126.92 1 127 Xe 54 | 180.32 5 (7%) | 129, 132, 131, 134, 136, 128? 130? Cs 55 132.81 1 133 Hg 200.6 6 197-200 202, 204 14 Bronsted and Hevesy, Nature, September 30, 1920. SCIENCE [ Vou. LV, No. 1418 V. Discussion oF IsoToPEs A glance at the results in Table I suggests a few observations. (a) Isobares and radioactivity. It is interesting to note that while iodine with an atomie weight 126.92 has but one isotope, 127, bromine with an atomic weight 79.92 has two, 79 and 81. Had it turned out that bromine consisted of but one isotope with weight 80 we should have had an example of an isobare, that is, an atom of one element with an atomic weight the same as that of an atom of a second element. It will be seen that one of the isotopes of krypton has an atomic weight 80. It is also of interest to point out, as Harkins has done, that with magnesium having 3 iso- topes and chlorine 2 it is possible to have nine isotopic forms of MgCl,. As mercury has six isotopes there would follow the possibility of having 63 isotopic forms of Hg,Cl,. Similar considerations would apply in regard to other elements. G. P. Thomson has recently found that strontium consists of two isotopes of weight 85 and 87. He failed however to find one of weight 88 or any higher number the necessity for which the atomic weight of strontium, 87.63, would seem to demand. As rubidium was shown to have isotopes of weight 87 and 85 we have in strontium and rubidium an example of isobaric isotopes, 7. e., the atoms of these two elements are identical in mass. As the nuclear charge of rubidium is 37e while that of strontium is 38e, it follows that the nuclei of rubidium atoms differ from those of strontium atoms only by the inclusion of one electron. This may possibly afford an explana- tion of the radioactivity which rubidium and its salts are known to exhibit. It has been shown that rubidium emits a soft radiation of beta particles, and since it is now generally agreed that radioactivity is a property of nuclei, it would follow that by the emission of beta rays, rubidium atomic nuclei are being transmuted into those of strontium. One should expect to find, then, strontium asso- ciated with the sources of rubidium. 223 Marcu 3, 1922] SCIENCE TABLE II IsoroPes OF RADIOACTIVE SUBSTANCES SUBSTANCE AT. NO. WEIGHT OF ISOTOPE GROUP NGSaretrng armas ees eee 92 238 234 VI 1 Wy Protoactinium 91 234 230 V UX, Pa Thorium 90 234 232 230 228 226 IV Th. Ux, I&UY Ra.Th. Ra.Act. PAG EIT UI pet ee So ee 89 228 226 IIl Ms.Th Ae. MERE CUL TTD Pele ie eae ok SISA eA 88 228 226 224 222 II Ms.Th Ra Thx Act.xX SBNAN ALONG eae eae eee eee 86 222 220 218 VIII Ra.Em. Th.Em. Act.Em. TEYGS Kap rata eal) eho a a 84 218 216 214 212 210 VI Ra.A. ThA. Ra.C. Th.C’ Ac.0’ Ac.A. Ra.F. TERK) caine) si opeeoeiaae oat ree SNL 83 214 212 210 V Ra.C. Th.C. Ae.D. Ra.E. Lead 82 214 212 210 208 206 IV Ra.B. Th.B. Ra.D. Th.D. Ra.G. Act. B. Ae.D. Rhames ewe ated eal LEME aN 81 210 208 206 III | Ra.C” Th.C.” AcC” As potassium is also known to emit a radia- tion of beta particles we should expect the nuclei of atoms of potassium to be transmuted thereby into nuclei of calcium of the same weight, 7. e., we should expect to find that calcium consisted of two isotopes isobaric with those of potassium and therefore of weight 39 and 41. As regards this point the only evidence we have available is that fur- nished by the experiments of G. P. Thomson, who states that he found an isotope for calcium at 40 but with the magnetic field at his dis- posal it was impossible to separate lines even two units apart if such had existed for eal- cium. Thomson states, however, that it is cer- tain that one or more isotopes of the weights, 39, 40, and 41 were present in his experiments. In some preliminary experiments made by Dempster an isotope of calcium was found at or near 40. He states, however, that the possi- bility of one of weight 39 is not excluded by his results. It will be interesting to see whether future experiments show that calcium has two isotopes of weight 39 and 41. Some additional evidence on this point might be gained by investigating the association of eal- cium with primary sources of potassium and its salts. In this connection it is of interest to point out that lithium, sodium and cesium have not been found to be radioactive. Moreover neither lithium and beryllium nor sodium and magnesium have any isotopes in common. Cesium has been found to have but one isotope of weight 133 and although the isotopes of barium have not yet been investigated it would appear to be highly probable that, since the atomic weight of this element is 137.37, it will be found not to have any isotope isobaric with that of exsium. (b) Isotopes of cadmium. Since the atomic weight of cadmium is 112.4 it will be seen that it will likely be found to have a number of isotopes, especially since zine has been shown to have four and mereury slx. (c) Atomic weight and atomic number. It will be noted that, with the possible excep- tion of KX*° and the doubtful Cl°° Table I does not show any other examples of isobares. There is a remarkable intermingling of the atomic weights and it is particularly noticeable in the case of ten consecutive integers representing the isotopes of bromine, krypton, and rubidium —Kr 78, Br 79, Kr 80, Br 81, Kr 82, Kr 84, Rb 85, Ky 86, Rb 87. This result makes it 224 clear that the exact order of the chemically determined atomic weights is of little signifi- cance and that the anomalies such as argon and potassium and possibly too of tellurium and iodine as well as nickel and cobalt are merely due to the unequal relative proportions of their constituent isotopes. From a consideration of the total abundance of various elements Harkins!’ pointed out that for the great majority of possible configura- tions it would probably be found that even atomic weight was associated with even atomic number and odd with odd. The results given in Table I, it will be seen, support this view. Of the halogens (odd atomic numbers) all six isotopes are odd. Of the alkali metals (odd atomic numbers) seven istopes are odd and only one even. On the other hand, of the iso- topes of the inactive gases (even atomic num- bers) fifteen are even and but three odd. This means that in the nuclei of most types of atom the number of electrons is an even number. (d) The spectra of isotopes. In an attempt made by Harkins, Aronberg and Gale'® to see whether any method of dis- tinguishing between the isotopes of an element could be obtained from a study of their spectra it was found that the wavelength of the line = 4058 A.U. as obtained from radiolead was 0.0044 A.U. greater than that from ordinary lead. A similar result was also obtained by Merton." It has been pointed out however that this difference is about one hundred times greater than that predicted on the hasis of Bohr’s Theory of Radiation. Loomis!® also has drawn attention to the unexpected satel- lites which Imes?® found beside each line of the HCl absorption band at 1.76, and which measurements of his curves show to have an average wavelength of 16.4 A.U., longer than the lines which they accompany. These satel- lites Loomis has shown can be accounted for by assuming them to be due to the heavier of the isotopes of chlorine of weights 35 and 37. On 15 Harkins, Nature, April 4, 1921. 16 Harkins, Aronberg and Gale, Jl. of the Am. Chem. Soc., July, 1920, Vol. 42, p. 1328. 17 Merton, Proc. Roy. Soe., 96A, p. 388, 1920. 18 Loomis, Nature, Oct. 7, 1920. 19 Imes, Astrophys. Jl., Nov., 1919. SCIENCE [Vou. LV, No. 1418 this basis, his calculations show that the differ- ence between the wavelength of the main line and its satellite should be 13 A.U., which it will be seen is in good agreement with observa- tions of Imes. (e) Structure of atomic nuclei. By far the most important conelusion which can be drawn from the results recorded in Table I is that, with the exception of hydrogen, the weights of the isotopes of all the elements measured and, therefore almost certainly of all elements, are whole numbers, within the accuracy of the experiments—namely, about one part in a thousand. This result carries with it the possibility of greatly simplifying our ideas of mass. The original hypothesis of Prout, put forward in 1815, that all atoms were themselves built of atoms of protyle, a hypothetical element which he tried to identify with hydrogen, has been established on a new basis with the modification that the primordial atoms are of two kinds—atoms of positive and negative electricity. The unit of negative elec- tricity, the electron, we have long been familiar with, but the unit of positive electricity, which also appears to be the real unit of mass, has remained unidentified experimentally until now as the positive nucleus of the atom of hydro- gen. To this unit of mass and of positive elec- tricity the name of “proton” has been given. This profound modification of our views of the nature of mass has been very clearly set forth by Aston. The Rutherford atom whether in Bohr’s or Langmuir’s development of it consists essentially of a positively charged central nucleus around which are set planetary electrons at distances which are great compared with the dimensions of the nucleus itself. As has been stated the chemical properties of an element depend solely upon the atomic number which is the charge on its nucleus expressed in terms of the unit charge “e.” A neutral atom of an element of atomic number N has a nucleus consisting of K-+N protons and K electrons and around this nucleus are set N electrons. The weight of an electron on the seale we are using is 0.0005 so that it may be neglected. The weight of the atom will there- fore be IX-+-N so that if no restrictions are Marcu 3, 1922] placed on the value of K any number of iso- topes is possible. The first restriction is that excepting in the case of hydrogen K ean never be less than N for the atomic weight of an element is always found to be equal to or greater than twice its atomic number. The upper values of K also seem to be lim- ited, for so far no two isotopes of the same element have been found differing by more than 10 per cent. of its mean atomic weight, the greatest difference is eight units in the case of krypton. The actual occurrence of isotopes does not seem to follow any law at present obvious, though their number is prob- ably limited by some condition of stability. Protons and electrons may therefore be re- garded as the bricks out of which atoms have been constructed. An atom of atomic weight m is turned into one of atomic weight m-—+ 1 by the addition of a proton plus an electron. If both enter the nucleus the new element will be an isotope of the old one, for the nuclear charge has not been altered. On the other hand, if the proton alone enters the nucleus and the electron remains outside, an element of next higher atomic number will be formed. If both of these new configurations are pos- sible they will represent elements of the same atomic weight but with different chemical properties. Such elements we have pointed out above are called isobares, and are already known to exist among the radioactive elements. (See Table IT). The element hydrogen, it will be noted, is unique in that its nucleus weight, 1.008, ex- hibits a departure from the rule of integers followed by the isotopes of all the other elements investigated. It will be noted, how- ever, that it is the only atom in which the nucleus is not composed of protons and elec- trons closely packed together. It can be shown that with close packing of protons and elec- trons there must follow a reduction in effective mass, and that when four protons and two electrons are closely packed together as they must be in alpha particles, the nuclei of helium atoms, the resultant effective mass must be somewhat less than four times that of the hydrogen nucleus. SCIENCE 225 VI. THe Diwensions or Atomic NUCLEI, THEIR ELECTRIC CHARGES AND Fisips or Force While phenomena connected with the seat- tering of « rays have led to such profound mod- ifieations in our views of atomic structure, it is of interest to note that through the agency of these same «@ rays we are likely to make still further advances in the problem of determin- ing the ultimate structure of matter. Through the attacks now being rigorously pressed by Rutherford and his associates, the structure of the nuclei of atoms is slowly but steadily being revealed. Through the bombardment of atomic nuclei by « rays it has been found that the electric charges on atomic nuclei can be meas- ured with a high degree of precision, estimates of the diameters of nuclei can be made, the field of electric force about a nucleus can be examined, and the structure of the nucleus itself can be broken down. (a) Nuclear charges. In his early experiments, Rutherford had shown from the experiments of Geiger and Marsden on the scattering of « rays that the charge on the nuclei of atoms of gold was within 20 per cent. equal to 100 e. More recently Chadwick?° has shown by the use of direct and more refined methods that the charges on the nuclei of three types of atoms, namely, those of platinum, silver and copper, have the value of 77.4e, 46.3e and 39.3e respec- tively. As the atomic numbers of these ele- ments are 78, 47 and 39, it will be seen that these results strongly confirm the view put forward by Rutherford as a result of the experiments of Moseley and others, which indi- cate that the nuclear charge is equal to Ne, N being the atomie number of the element. (b) Nuclear dimensions and nuclear electric fields of force. As mentioned above, Rutherford has shown by experiments on the scattering of « rays that the dimensions of atomic nuclei must be ex- ceedingly small. For example, when high speed « particles collided with atoms of gold they were found to be turned back in their path at a distance of 3 10—1 em. between 20 Chadwick, Phil. Mag., Dec., 1920, p. 734. 226 the centers of the « particles and those of the nuclei of the atoms of gold bombarded. This would go to show that in the case of the nucleus of an atom of gold, its radius is prob- ably not greater than 3 X10—8 em. Further evidence in this direction has recently been adduced by Chadwick who found that the dis- tance of approach of high speed « particles to the nuclei of platinum atoms was about 7 X10—? em. and of low speed « particles about 14 X 10-2 em. In order to account for the velocity given to hydrogen atoms by collision with « particles, Rutherford caleulated that the centers of the nuclei of helium and hydrogen must approach within a distance of 1.7 X 10-18 ems. of each other, assuming the law of repulsion to be that of the inverse square. But the recoil phenomena of hydrogen atoms bombarded by « particles cannot be completely accounted for by assuming an inverse square law to hold for all distances between the centers of the « particle and the. hydrogen nucleus. Rutherford suggested that roughly they could be explained by taking the « par- ticle to be the equivalent of a plate of radius 3 x 10—” em. and assuming that as long as the « particle did not approach within this distanee of the hydrogen nucleus, the ordinary inverse square law of repulsion held. If, how- ever, the « particle did approach within this distance of the hydrogen nucleus a collision ensued which swept the latter straight for- wards. An attempt was made by Darwin?! to work out the collision relations for all possible models of the « particle for which the electric fields would give integrable orbits. As a basis for this work he assumed the « particle to consist of 4 protons and 2 electrons, and found that a square nucleus in which the pretons were arranged at the four corners of the square and the two electrons together at the center of the square, would give a field of force very similar to that of a bipole with collision relations roughly similar to those deduced from Ruther- ford’s experiments. 21 Darwin, Phil. Mfag., Vol. 41, p. 486, March, 1921. SCIENCE [Vou. LV, No. 1418 This model has been put to the test by Chad- wick and Bieler?? and by MeAuley2* in a new series of investigations on collisions between particles and hydrogen nuclei and has been found to be not entively satisfactory. In these experiments the earlier observations made by Rutherford were confirmed, namely, that « particles and hydrogen nuclei in collision do not behave as point charges. Not only is the angular distribution of the projected hydrogen nuclei ditierent, but the numbers projected at small angles are for « particles of high velocity many times greater than those for point nuclei. For example, the observed num- ber of hydrogen nuclei projected within 30° ot the direction of incident « rays of range 8.2 em. is more than 100 times as great as the theoretical number. The number projected within the same angle by « rays of range 4.3 em. is 15 times the theoretical number. Also the observed variation of the numbers of. pro- jected hydrogen nuclei with velocity of the « particle is in the opposite direction from that given by the point theory. For example, « rays of range 8.2 em. project within an angle of 30° nearly 3. times as many hydrogen nuclei as % rays of range 4.3 em. On the basis of the point charge theory the « rays of 4.3 em. range should give nearly 3 times as many as the 8.2 em. @ rays. It would appear, ac- cording to Chadwick and Bieler, that as a first approximation the « particle behaves in eolli- sion with a hydrogen nucleus as a body with properties intermediate between an _ elastic sphere and an elastic plate, and more like an elastic oblate spheroid of semi axes about 8X 10-8 em. and 4 X 10-3 em., respectively, moving in the direction of its minor axis. On this view a hydrogen nucleus projected towards an « particle would move under the ordinary electrostatic forces governed by the inverse square law until it reached a spheroidal sur- face of the above dimensions. Here it would encounter an extremely powerful field of force and recoil as from a hard elastic body. The deductions made by Chadwick and Bieler are 22 Chadwick and Bieler, Phil. Mag., Vol. 42, 5 lDYeens | IES Ral 23 MeAulay, Phil. Mag., Vol. 42; p. 892, Dec., Marc 3, 1 ix) SS interesting in that they emphasize the view that in dealing with collisions between « par- ticles and hydrogen nuclei one must recognize that the inverse square law of vepulsion ceases to hold in the immediate neighborhood of the electric charges carried by these nuclei. What the law of variation of the electrie force is very close to an electric charge such as we have in an o particle can not as yet be deduced from the experimental evidence available. It is clear, however, that the electric forces in this region are of great intensity. It is of interest to note that Chadwick and Bieler have pointed out that thei experiments provide the only direct evidence we have as to the size of electrons. Assuming an @ par- ticle to consist of 4 protons and 2 nuclei it can be seen that the dimensions of the model ot the « particle which their experiments have led them to put forward require that the radius of an electron cannot be greater than about 4x10—-8 em. Hitherto the only information we have had available as to the dimensions of the electron has been that obtained by calceula- tions based on the assumption that its mass is wholly electromagnetic. Such calculations have given the value 2X10—2 em. for its diameter. While it is clear that an inverse square law of foree does not hold in the region extremely close to a nucleus, the experi- ments of Geiger and Marsden on the angular seattering of alpha particles by gold atoms between 5° and 150° show that it does hold very closely for distance, between 3.1 x 10—!2 em. and 386 X10—-!2 em. from the center of nuclei such as those of gold atoms. In this connection it will be recalled that the agree- ment between the experimental of the X-ray KK series spectra and the the- oretical values of Debye** and WKyoo7? shows that the inverse square law still holds at the IK ring of electrons. In the ease of platinum the radius of the K-ving is about 10-19 em. Thus measured from any point in the region between x 10-2 em. and 10-9 em. from the nucleus of a heavy atom like gold or platinum, the nuclear charge is equal to the atomic number measurements 24 Debye, Phys. Zeit., XVIII, p. 276, 1917. 25 Kroo, Phys. Zeit., XIX, p. 307, 1918. 29] SCLENCE 227 and the law of force is the inverse square. We may therefore conclude that no electrons are present in the region between the nucleus and the I< ring. This result is of special importance in eon- nection with observations recently made by Barkla’® and White and confirmed to a certain extent by Crowther,?* which point to the possi bility of stimulating atoms to emit radiations of wavelengths shorter than those of any of the known f-series. Jf these experiments should be corroborated by the results of later work it would appear that we must conelude that these J-rays and possibly, too, the more penetrating gamma rays originate within atomic nuclei and are not produced by dis- turbances of any situated f the systems of electrons within the but outside their In this connection it should be pointed out that Richtmyer?S has failed to find any valid evidence of the existenee of X-rays of the J type. Vil. (a) H. particles. The study of isotopes which we have briefly outlined above has led to very definite views regarding the structure of atomic nuclei. It is clear that all nuclei must be made up of protons and electrons held together by intense fields of foree. Direct experimental evidence in support of this view has recently been brought forward by Rutherford? and _ those associated with him.2? It is found that when swift alpha particles ave made to pass through air or nitrogen a few particles having all the properties of protons are projected forward with velocities which give them a maximum range in air of 40 em. No such long range particles are observed in oxygen or earbon dioxide. When swift alpha particles are made atoms nuclei. THE STRUCTURE OF THE NUCLEUS 26 Barkla and White, Phil. Mag. (6), XXXIV, p: 270; L917. 27 Crowther, Phil. Mag., (6), Vol. 42, p. 719, Nov.,, 1921. 28 Richtmyer, Phys. Rev., p. 433, March, 1921. 29 Rutherford, Bakerian Lecture, Proc. Roy. Soc. (London), A., Vol. 97, p. 375, 1920. 30 Rutherford and Chadwick, Phil. Mag., S. 6, Vol. 42, p. 809, Nov., 1921. 228 to pass through hydrogen the maximum range obtainable for the recoil of hydrogen nuclei is never greater than the equivalent of 29 cm. in air. This makes it clear that the recoil of H particles or protons obtained with nitrogen can not arise from the presence of hydrogen as an impurity in the gas. The H particles must therefore originate in the nuclei of the nitrogen atoms which must therefore suffer disintegration under the intense bombardment of the alpha rays. Results similar to those obtained with nitrogen have been obtained with other elements that have been examined but it is of interest to note that it is only those elements whose atomic mass is given by 4n+2 or 4n-+3 where n is a whole number that give rise to H. particles. Elements of mass 4n like carbon, oxygen and sulphur show no effect. In Table III the results obtained so far are summarized. TABLE IIT Recon H PartTicLes anpD THEIR RANGES Maximum. range in em. of air of 4n +2 |H particles or Element | Mass or protons expelled 4n+-3 | under alpha ray bombardment Boron ......- Wd |2%443 Ca 45 Nitrogen ... 14 |83x%443 40 Fluorine ... 19 |4x%4+43 40 Sodium ...... 23 |5x%443 42 Aluminium 27 16%443 90 Phosphorus 31 7x4+3 65 (b) Ranges of H. particles. With aluminium it will be seen the range of the expelled protons is more than twice as great as for those liberated from hitrogen. The number of H particles expelled from the nuclei of the atoms of different elements is found to vary greatly with the speed of the impinging alpha rays. When alpha particles from thorium C which have a range of 8.2 em. in air are used the H particles are relatively numerous. With « particles having a 7 em. range in air, 7. e., those emitted by Ra.C, the number of H particles ejected is considerably smaller. With alpha rays of range 5 cm. in air the number is exceedingly small. With aluminium no HH particles appear to be re- leased by alpha particles of range less than 5 em. SCIENCE [Vou. LV, No, 1418 (c) H particle satellites: backward recoil. In experiments with aluminium foils bom- barded by alpha rays it was found that the direction of escape of the H particles was to a large extent independent of the direction of the impinging alpha particles. Nearly as many were expelled in the backward as in the for- ward direction. The maximum range for H particles ejected in the backward direction was, however, found to be less than that of H particles projected forwards. In the case of the former the maximum range was 67 em. while with the latter it was 90 em. air equiva- lent. In order to explain the ejection of H parti- cles in all directions Rutherford and Chadwick haye put forward a simple explanation. They suppose that in such an atom as that of nitro- gen the main nucleus has a mass 12 and that it has two H particles moving in an orbit round and close to it. The manner in which the eolli- sions are supposed to occur is shown in Fig. I. » i —>-@ A B Fie. 1 If the collision oceurs as in A the H particle is driven in the forward direction of the alpha particle and away from the nucleus; if, as in B, the H particle is driven towards the nucleus; it describes an orbit close to the latter and escapes in a backward direction. The differ- ence in the velocity of the H particles in the forward and backward directions is probably due to the fact that the main nucleus has been set in motion, in the direction of the alpha particle, before the close collision with the H particle oceurs. On this view the relative velocity of the H particle and the residual nucleus is the same whether the H particle escapes in the backward or forward direction; but the actual velocity in the backward direc- tion is less. (d) Attraction between positive charges. Marcu 3, 1922] This explanation, it will be noted, implicitly assumes that positively charged bodies attract one another at the very small distances involved in the close collisions between alpha particles and atomic nuclei. Rutherford and Chadwick have pointed out that in order that the ecollid- ing alpha particle may communicate much of its momentum to an H particle satellite the latter must be held by strong forces to the nucleus. If, however, the H satellite is very close to the nucleus the alpha particle may have to communicate a considerable fraction of its momentum to the central nucleus, and the velocity of escape of the H satellite is cor- respondingly reduced. This for example may be the explanation why the. alpha particles from aluminium are ejected at higher speeds than those from phosphorus-of higher nuclear charge. In phosphorus the H satellites may move so close to the nucleus that the alpha particle is able to give a smaller share of its momentum to the H satellite than in the case of the more distant satellite of aluminium. (e) Close satellites. So far no H particles have been obtained with elements heavier than phosphorus. The failure to obtain them with such elements may be due to the fact that the H atoms either move very close to the central nucleus or are incor- porated in it. (f) Disruption potential. The theory of nuclear disintegration put for- ward would seem to demand a definite disrup- tion potential for nuclei having one or more H satellites revolving about them. The experi- ments with aluminium support this view as no H particles are released from aluminium nuclei by « particles of range in air less than 5 em. The disruption potential for the nuclei of aluminium atoms, i. e., the potential differ- ence required to communicate the same energy to an electron as is possessed by the « particle is of the order of six million volts. The cor- responding potential to liberate an electron from the K or inner ring of electrons, of the atoms of aluminium is only about 2,200 volts. By a simple ealeulation it can be shown that the results obtained by Rutherford indicate that by operating at six million volts one could with the daily expenditure of 600,000 H.P. SCIENCE 229 disintegrate the nuclei of three cubic feet of nitrogen and obtain thereby not only the re- covery of the 600,000 H.P. but also approxi- mately 80,000 H.P. in addition. (g) Atomic weight of nitrogen. If the view put forward is correct that the H particles are satellites of the central or main nucleus the mass of the H satellite,—since it is not in the “closely packed” condition,—should not be very different from that of a free H nucleus. Assuming that the nitrogen nucleus is derived from that of carbon by the addition of two H satellites and one electron, one might expect the atomie weight of nitrogen to be 14.016, assuming C = 12.00, and H = 1.008 in terms of O = 16. By a slight refinement of Aston’s positive ray analysis it should be pos- sible to examine this point. (h) Atomie energy. A matter of primary importance which has emerged from the experiments on the disinte- gration of atomie nuclei is that the energy of the H particle as it is ejected from aluminium atoms by the impact of « particles is 1.40. times the energy of the impinging « particles. Even when ejected in a backward direction the released H particle has kinetie energy about 13 per cent. greater than that of the « particle, causing its ejection. This additional energy must come from the atom in consequence of its disintegration. We have therefore in these experiments of Rutherford strong indications of a method of attack which, if followed up, may open a way to the release of the stores of atomic energy existing in ordinary materials about us. (1) H, particles. In addition to the long range H particles liberated from nitrogen, the passage of « par- tieles through oxygen as well as through nitro- gen gives rise to much more numerous swift atoms which have a range in air of about 9 ems compared with that of 7.0 em. for the col- liding « particles. From preliminary observa- tions on these particles they appear to have a mass of 3 and to carry a positive charge 2e. They would thus seem to be the nuclei of an isotope of helium. A number of experiments have been made by Rutherford with « particles traversing gases other than oxygen and nitro- 230 gen with the object of definitely establishing the origin of these particles. The imperfee- tion of metal foils, used in the experiments, from the point of view of « rays is very great and as yet no very final conclusions can be drawn from the observations. So far, there is always the possibility that these particles may The H, par- ticles obtained from nitrogen are from five to come from the source of « rays. ten times as numerous as the H particles so that if these particles really originate in the nuclei of nitrogen atoms, if is clear that the nitrogen nuclei can be disintegrated in two ways and that the two forms of disintegration must be independent and not simultaneous. Since the H, and « particles both carry the positive charge 2e, and the range of the former 97 is 27 t per cent. greater than that of the latter, it can easily be shown that the H, particles have a velocity 20 per cent. greater than that of the « particles. The kinetic energy of the H, particles must therefore be about 8 per cent. greater than that of the 7 em. range « particles. If, therefore, the H, particles are ejected from nitrogen nuclei by the « particles there must be a gain of 8 per cent. in energy of motion even though we disregard the sub- sequent motion of the disintegrated nucleus and of the colliding @ particle. It will be interesting to follow developments in connec- tion with these H., particles. If their existence be confirmed by future experiments and it can be shown definitely that they originate in the nuclei of atoms of such elements as oxygen and nitrogen, then we shall have in their pro- duction a second example of the release of atomic energy through the agency of « rays. (j) Alpha particles. Attention should be drawn to the branched X-ray cloud tracks recently obtained by Takeo Shimizu*! by the use of C. T. R. Wilson’s beautiful method of making visible the tracks According to Ruth- erford if about one hundred thousand « rays of ionising rays in gases. from Radium C pass through air, on an aver- age there will be one close nuclear collision which results in the ejection of a swiftly moy- 81 Shimizu, Proc. Roy. Soc., Series A, Vol. 99, pp. 425 and 482, Aug., 1921. ry TAT IN Th SCLAN CH [Vou. LV, No. 1418 ing H particle. In Shimizu’s experiments he found that about one in every three hundred % rays traversing air produce a branched track. These branched tracks cannot therefore have been produced by the ejection of an H particle. One striking feature of the Shimizu branched tracks is that their shapes and sizes are very similar and the lengths of the two limbs of the branches ave approximately the same. The angle between the two branches seems to vary but little and judging from the photographs, an example of which taken from Shimizu’s paper is shown in Fig. 2, it appears to be about equal to a right angle. With these branched tracks the branching always takes place near the end of the path of the « particle. Fie. 2 Photograph of a branched g-ray track viewed from two positions at right angles to each other. Actual magnification 5.5. In this regard they differ from the short- spurred tracks obtained by C. T. R. Wilson** where the abrupt bending of the « ray track took plaee at different from the source of the « particles. ments the angle between the direction of the short spur and that of the deflected « particle distances In Wilson’s experi- C. T. BR. Wilson, Proe. Roy. Soc., A, Vol. 87, 1912. Marcu 3, 1922] was about 107°. This fact, together with the observed relative length of the spur and the track of the deflected « particle seems to show that the spur was due to an oxygen atom re coiling under close impact with the alpha pavr- ticle.. The Shimizu branched tracks, however, appear to be similar to what one would expect to get, on the basis of Darwin’s calculations, in a closed collision between an « particle and the nucleus of a helium atom. This idea naturally suggests that we have in the Shimizu branched tracks examples of the disruption of nuclei with the liberation of He," or alpha particles. If this conjecture should turn out to be correct it would indicate that « particles can exist as definite units within the nuclei of atoms of one or more of the gases which make up air. It would be of interest to see if the Shimizu tracks ean be ob- tained in pure nitrogen and also in pure oxygen and other simple gases. Since « par- ticles are known to exist at definite units within the nuclei of the atoms of the radio- active elements, it would not be surprising to find their oceurrence in the element such as oxygen. nucleus of an Tt would be of special interest, however, to find out the hehtest atom other than that of helium in the nucleus of which the « particle exists as a unit. (k) Models of atomic nuclei. It is difficult with the present state of our knowledge to go into details regarding the pos- sible strueture of the nuclei of even the lighter and presumably less complex atoms. It would seem, however, that there is strong evidence for the view that among the possible units or Fie. 3 Hetium Nucirus Tie. 4 NucLrus CARBON Wei CY Mle €-*6 Lapa ©) Ltcrer O ge * ® “ee, -@ SCIENCE 231 structural bricks out of which nuclei are con- structed are protons (H.) and «a particles aig) There is also some evidence that the particle (lew), ?. e., the nucleus of a tripro- tonic isotope of helium can exist as a distinet elementary unit in the nuclei of some types of atom. With such or somewhat similar combining units, attempts have been made by Harkins** to work out a constitutional formula applica- ble to the nuelei of all the elements. The validity of such generalizations ean be firmly established only through elaborate and varied experiments, but in the meantime they can at least serve as guides in arranging schemes of attack for prospective experimental work. A yather suggestive set of models of the atomic nuclei of helium, carbon, nitrogen, and oxygen, based on the ideas of Rutherford is shown in Figs. 3, 4, 5, and 6. In these, the particles H,, He,” and Hes are utilized as constituent units. Similar models can be easily made for the nuclei of the atoms of other elements. From these models one would expect to find Her* particles released by the disruption of carbon atoms, Be and ret) particles when nitrogen atoms are broken up and He.” as well as He. particles when oxy- gen nuclei are disintegrated. It will be seen that the models provide the requisite masses and resultant electric charges for the nuclei they represent. In so far as the nuelei of helium, nitrogen and oxygen atoms are con- cerned the constitution presented would seem 33 Harkins, Phys. Rev., Vol. 15, p. 73, 1920. Fig. 6 Oxyern NUCLEUS Fie. 5 NirroGen NucLEUS Mie C77 Me 0-738 LEI C? O Lrecirar © A 8 4 Lam O Ae ® 232 to be not incompatible, at least with the results of many of the experiments of Rutherford and of those who are so brilliantly cooperating with him to reveal to us the ultimate structure of matter. J. C. McLennan THE PHYSICAL LABORATORY, UNIVERSITY OF TORONTO, DECEMBER 29, 1921 PROGRESS IN METRIC STANDARDI- ZATION Mark Twatn remarked that people talked a great deal about the weather and yet he never heard of anybody doing anything about it. The same observation might also be made in reference to the metric system. As scientists we believe in it and through our organizations such as the American Association for the Ad- vancement of Science, the American Chemical Society, etc., we pass resolutions in favor of its adoption, but we do little towards making its use more general. We use the metric sys- tem in certain parts of our work but we con- tinue to purchase our chemicals and. supplies on the basis of the so-called English “system.” The American Chemical Society has resolved to “do something about it” and the first step is to purchase our chemicals and supplies on a metric basis and thus “clean our own house.” The manufacturers and dealers are entirely willing to cooperate, but they feel that it is absolutely necessary for the consumers to take A list of some 40 manufacturers and dealers, who are ready to quote in metric the initiative. wnits, has been compiled by the Metric System Committee. Cf. J. Ind. and Eng. Chem. 13, 1068 Nov. 1921. Several firms already use metric packages and some of them exclusively such as the Eastman Kodak Company, Powers- Weightman-Rosengarten Co., ete. Users of chemicals are now asked to write their specifications in metric units in order to aid in this movement. Over 300 colleges and universities have already agreed to cooperate in the movement, with only one institution known to be opposed to the change. Over 250 technical firms have agreed to purchase their pure chemicals and chemical supplies in metric SCIENCE [Vou. LV, No. 1418 packages. Firms have been urged to write to the Committee “even if opposed to the move- ment.” It is significant that less than 3 per cent. of those heard from are opposed, which prompts us to believe that in a short time pure chemicals in America may be packed exclusive- ly in the standard metric packages as recom- mended by the Committee on Guaranteed Re- - agents and Standard Apparatus (cf. J. Ind. Eng. Chem. May 1921), Dr. W. D. Collins, Chairman. We now ask that all scientists—physicists, biologists as well as chemists—make a point of ordering chemicals in metric units. It is not practicable to reach by letter all of the teachers of science in our schools and colleges as well as those using chemicals in the industries, henee we are making this general appeal so that the transition period may be made as short as practicable. We have had printed “stickers” stating that “orders must he filled and billed in metric units” which will be sent to any cor- respondent for the asking. No scientist would willingly join a move- ment which would work an injury to American industry. We have considered the question whether the compulsory adoption of the metrie system would be injurious to industry and we believe that it would be of distinct benefit not only in world trade but in our intercourse here at home. The DeLaval Separator Company has already changed over to the metric basis in a purely mechanical enterprise and they find that the cost of the change does not even “show up” in the manufacturing costs. In education the saving by abolishing our out-of-date system would be enormous, esti- mated by Dr. Wolf to be an aggregate of a million years in a single generation. The pro- motion of understandings with other nations tends to the promotion of world peace and the cost of not adopting the system used by practically every nation in the world except the English and ourselves may far exceed in a single generation the cost of making the change. We need local committees to get the metric system properly taught in the schools. Doc- tors are writing prescriptions in metrie units Marcu 3, 1922] voluntarily already on a small seale. Sys- tematic effort would doubtless increase their number many fold. The old apothecary weights might be completely abandoned if ef- fort were expended in that direction. Finally, legislation making the use of metrie units obli- gatory would come as a matter of course when the public understood that prejudice and the supposed interest of a few gage manufacturers was keeping us from the only rational system of weights and measures. Evucense C. BincHam Chairman, Metric Committee LAFAYETTE COLLEGE THE BANDING OF BIRDS On the seventeenth of January, 1922, in response to an invitation from Mr. L. B. Fletcher and others interested in the banding of birds, over a hundred _ ornithologists, licensed bird-banders and candidates for licenses, met at the Boston Society of Natural History Building in Boston and organized a new ornithological society to be known as the New England Bird Banding Association. The meeting was addressed by 8. Prentiss Baldwin of Cleveland, Ohio, who, during the last six years, by introducing bird-trapping as a means of banding birds, has done so much to show the scientific possibilities of the work. The Bureau of Biological Survey in Washington was represented by Major KE. A. Goldman, who spoke of the bureau’s plans in connection with the movement, strongly endorsing the organ- ization of the new association and recommend- ing the formation of other organizations of the same character at appropriate localities in the United States and Canada. Members of Audubon societies and bird elubs in several states, and of the Nuttall and Essex County Ornithological clubs, and state ornith- ologists were present at the meeting, as well as a representative of the Canadian game warden service. At this writing, January 24, 1922, the asso- ciation has an enrollment of about three hun- dred members who are scattered over all parts of the territory covered by the organization, namely, New England, Quebec, and the mari- time provinces. SCIENCE 233 The following officers and councilors were elected : President: Mass. First vice-president: Dr. Charles W. Townsend, Boston, Mass. Second vice-president: James MacKaye, Cam- bridge, Mass. Corresponding secretary and treasurer: rence B. Fletcher, Brookline, Mass. Recording secretary: Miss Alice B. Harring- ton, Lincoln, Mass. Councilors: A. Cleveland Bent, Taunton, Mass. ; Dr. John C. Phillips, Wenham, Mass.; John E. Thayer, Lancaster, Mass.; William P. Wharton, Groton, Mass.; Aaron C. Bagg, Holyoke, Mass.; Charles L. Whittle, Cambridge, Mass. It may be of interest to ornithologists gen- erally to read an outline of the purposes and plans of the new association which has been formed under the stimuli furnished by the national movement, administered by the Bureau of Biological Survey; by the more general ap- preciation of the scientific aspects of bird banding as shown, in particular, by Mr. Bald- win’s recent work; and by the interesting and valuable data already obtained by previous bird-banding operations. In the beginning it was felt that the some- what disappointing results secured from bird banding in the United States to date were due to the workers being too scattered and unco- ordinated; to a lack of national support of the plan and the too general character of the ornithological problems bird-banding opera- tions were expected to solve. From a study of the situation we came to believe that we could obtain the best results: 1. By organizing a regional association of bird banders, meaning by this, bringing together a membership from an area possessing one or more migration highways, along which trapping sta- tions could be established to furnish, by intensive attack, fairly speedy answers to certain specific migration problems, thus early demonstrating to members the scientifie value of bird banding with the consequent stimulus to continue the work which it is expected will ultimately solve more ornithological riddles, aid in the solution of others and create new problems not now antici- pated ; 2. By having the members meet together as often as possible to discuss results, methods and Edward H. Forbush, Westboro, Lau- 234 future plans and to gather inspiration from their fellows after the manner of scientific societies generally, in this way using the combined knowl edge of the association to advance the work; 3. By appealing for the support of Audubon societies all over the country on the ground that bird banding is a bird-protection movement, since to an important extent it will be possible in the future to substitute an examination of a bird for the study of a dead one; 4. By ensuring as far as possible the perma- nence of the movement by means of institutional trapping stations operated by or in connection vith Audubon societies, natural history societies, bird clubs, departments of ornithology or zoology at colleges and universities, bird sanctuaries, state and national parks, etc., in addition to sta- tions operated by individuals; and 5. By establishing a convenient local depository of all bird-banding records made by members (an exact. copy of the same of course being sent to the Biological Survey) in appropriate quarters where they may be studied by members of the association and others. live Cuaries L. WaHrIttie CAMBRIDGE, MASSACHUSETTS SCIENTIFIC EVENTS CONFERENCE ON BUSINESS TRAINING OF THE ENGINEER AND ENGINEERING TRAINING FOR STUDENTS OF BUSINESS Tue United States Commissioner of Hduea- tion is calling a second public conference on commercial engineering on behalf of a com- mittee on commercial engineering appointed by him to investigate business training of engineers and engineering training for students of busi- ness. The conference will be held May 1 and 2 at the Carnegie Institute of Technology in Pittsburgh. President Arthur Hamerschlag of this institution is a member of the committee which is composed of prominent deans of schools of engineering, and of commerce in our larger universities, and of engineers and busi- ness men who are nationally known for their interest in the reduction of the costs of pro- duction, distribution, transportation, — ete., through better training in schools and colleges of the perscnnel of industry and commerce. SCIENCE [Vou. LV, No. 1418 The conference will be open to the public. Invitations to appoint delegates to the Pitts- burgh Conference, however, will be sent by the commissioner of education to commercial and trade organizations, engineering and scientific societies, educational institutions and other eroups as well as to prominent individuals. Owing to the timeliness of the subject, the conference in Pittsburgh will even have greater national significance than the first puble con- ference on this question, which was held in Washington two and one half years ago under the direction of this committee on commercial engineering of which Dr. Glen Levin Swiggett of the Bureau of Education is chairman. He says: The four major topics of the conference will be presented and discussed at general and round table sessions by business men, educators and engineers, contributing to the construction of a cooperative program between education and busi- ness for the better coordination of all productive distributive processes in trade com- merece. It is planned to have the second confer- ence even more constructive than the first, since which time the curricula of 29 of the 119 engi- necring colleges reporting to the Bureau of Edu- cation have been favorably modified to include one or more of the four committee recommenda- tious. Outstanding topics at the Pittsburgh con- ference will deal with the new problems that have recently arisen in modern industries, the solution of which demands a more scientific approach to include job analyses and personnel specifications and a translation of these into a new and teach- able content for use in our engineering and com- and and merce schools; with the training of the engineer for a better understanding of problems relating to community development; and with the training of the engineer for management of overseas engi- neering projects. GIFT OF THE ROCKEFELLER FOUNDATION FOR A SCHOOL OF HYGIENE IN LONDON ACCORDING to a press dispatch to the New York Times the British minister of health an- nounced on February 21 that the Rockefeller Foundation had offered to provide $2,000,000 toward the cost of building and equipping a school of hygiene in London. This offer is on the understanding that the British Government MArcH 3, 1922 shall accept the responsibility of providing for appointing the staff and maintaining the school when established. Such a school was recommended by the com- mittee appointed early in 1921 to consider pro- vision for pest graduate medical examination in London, and the recommendation was fur- ther considered by an expert committee with the minister of health as chairman. in view of the diffienlty at present of financ- ing the scheme, the whole case was presented to the Rockefeller Foundation as one in which it might think it well to cooperate in the general interest of progress in public health. This gift follows the donation of £1,000,000 to the University of London and University College Hospital. For providing the staff and maintaining the proposed school of hygiene, the government will have to allocate £125,000 spread over a So long ago as 1915, the Institute of Hygiene planned a great cen- tral building in Marylebone Road, but the es- timate at that date of £47,000 for the build- ing alone made it impossible to proceed. In March of last year a new estimate was obtained and it was found that the cost would appvoxi- mate £125,000. The British Government felt it impossible to allocate the necessary funds at a period of such financial difficulty as the present. In June, 1920, the Rockefeller Foundation announced that it had provided endowment yielding £30,000 annually for the University of London to aid medical study. At that time it was said that the funds would be used to support a new staff in anatomy at the college, for an increase in the staff of physiology, for a full-time unit in obstetrics and for various items of increased laboratory and clinical ser- vice. In a-statement issued at the time of the gift by Dr. George H. Vincent, president of the Rockefeller Foundation, it was said: Since the Rockefeller Foundation is cooperating with governments in many parts of the British Empire, it recognizes the importance of aiding medical education in London, where the training of personnel and the setting of standards for health work throughout the eimpire are so largely centered. period of five years. SCIENCE 235 LECTURES IN CHEMICAL ENGINEERING In connection with the recently organized course of chemical engineering at Yale Univer- sity, a series of lectures has been given during the winter by prominent technologists inelud- ing: Dr. H. C. Parmelee, editor of Metallurgical Engineering (opening lecture, Octo- Chemical and ber 19, 1921), ‘‘The chemical engineer. ’’ Mr. Fred Zeisberg, of the du Pont Company (October 26), ‘* Manufacture of nitrie acid.’’ Mr. A. EH. Marshall, consulting engineer, Balti- more, Md. (November 1), ‘‘The manufacture of sulphurie acid and some points in the training of the chemical engineer.’’ Dr. Bradley Stoughton, consulting engineer, New York City, (December 7), ‘‘The réle of iron and steel as relating to the manufacture and, use 9 of chemical equipment and process Mr. L. D. Vorce, consulting engineer (December 15), ‘*The electrolytic production of alkali and chlorine. ’’ Mr. Walter &. Lummus, Walter Lummus Com- pany, Boston, Mass. (January 18, 1922), ‘‘ Mod- ern methods of fractional distillation.’’ Dr. C. BR. Downs, Barrett 25) naaee DAs Dr. Otto Mantius, York City (February evaporators. ’?’ Company (January i tiation of coal-tar products.’ New and consultine engineer, 15), ‘«Tivaporation THE SHELDON MEMORIAL A FEW months ago, as already noted. in Sctencs, the Sheldon Committee was organized to receive subseriptions toward a foundation in honor of the late Dr. Samuel Sheldon, professor of electrical engineering and physies at the Polytechnic Institute of Brooklyn, 1889-1920. As chairman of the committee, I am glad to Memorial report that we are now turning over to the Treasurer of the Polytechnic Institute $15,018, the sum so far paid in by more than 1,000 There are still a few unpaid sub- scriptions and we are hoping to secure enough further pledges to raise the fund to at least $20,000. Although the sum raised was hardly sufficient really to endow a laboratory, the cor- poration of the institute has ordered that the Electrical Measurements Laboratory be known hereafter as the Samuel Sheldon Memorial Laboratory of Electrical Measurements and its subscribers. 236 members have collected among themselves an additional $1,000 for immediate improvements and the installation of a memorial tablet. In this manner, the entire fund raised by our com- mittee will be invested in the form of a trust and the income used perpetually for the main- tenance of this laboratory which will thereby become one of the best laboratories of electri- cal measurements in the country. I wish also to note the general sentiments of esteem and admiration expressed toward Dr. Sheldon, the loyalty of several hundred former students to his memory, and the enthusiasm found within the splendid institution to which with such conspicuous success he devoted so many years of his life. T. C. Martin, Chairman THE RAMSAY MEMORIAL FELLOWSHIP THE trustees of the Ramsay Memorial Fund have requested the National Research Council to nominate a fellow to devote his whole time to research in chemistry in some English uni- versity upon a stipend of 250 pounds sterling per year, with an additional allowance of 50 pounds for apparatus. The National Research Council has appointed a nominating com- mittee consisting of F. G. Cottrell, chairman of the Division of Chemistry and Chemical Tech- nology, National Research Council, Washing- ton, D. C.; E. B. Mathews, chairman of the Division of Geology and Geography, National Research Council, Washington, D. C., and professor of mineralogy and _ petrography, Johns Hopkins University, Baltimore, Md.; and W. E. Tisdale, secretary of the Division of Physical Sciences, National Research Council, Washington, D. C. This committee is willing to receive applica- tions from any American chemists who have taken a degree with distinction in chemistry in a university or college within the United States, and who are now connected with a uni- versity or college, or have recently been gradu- ated therefrom. The appointment will be for the academic year 1922-1923, and the fellow is eligible for reappointment for a second year. SCIENCE [ Vou. LV, No. 1418 Applicants should furnish: 1. Certificates or other satisfactory evidence of birth, health, character, and academic or other distinctions. 2. A written application stating: (a) Education and employment to date, and particularly the nature, extent, and place or places of his academic studies and research. (b) Particulars of the work and place of work proposed; and (c) The names and addresses of not more than three references well acquainted (one or other of them) with the health, character, capacity and career of the applicant, without, however, any written testimonials from them or others. One of the references should be a teacher under whom — the candidate has studied, or a high official of his university, college, or other place of education. These fellowships are open in chemistry, either pure or applied, and work may be ear- ried on at any university, college, or other place of higher education, or an industrial laboratory within the British Empire. Their object, in this instance, has, in addition to the stimulation of research, the special earnest desire on the part of English scientists to cultivate the wider acquaintance and good fellowship which is so much to be desired between scientifie men of the world. The Ramsay Memorial Fund for research in chemistry within the British Empire was founded in 1920 to commemorate the services to chemistry of Professor Sir William -Ramsay,. K.C.B., F.R.S., with an initial endowment of £14,000. dowments Since that time several special en- have established additions to this fund, and special fellowships with appropriate regulations are granted under: The Glasgow Special Fund; Royal Hellenie Government Special Fund; Federal Government of Switzer- land and of Swiss Subseribers Special Fund; Royal Italian Government Fund; Fund of the Honorary Advisory Council for Scientific and Industrial Research, Canada; Royal Swedish Government Special Fund. Applications should be mailed before April 15 to W. E. Tispate, Secretary 1701 MassAcBUSETTS AVENUE, WASHINGTON, D. C. Marcu 3, 1922] SCIENTIFIC NOTES AND NEWS Dr. VERNON KELLOGG, zoologist, secretary of the National Research Council, Washington, D. C., and John W. Davis, attorney, of New York City, formerly ambassador to Great Britain, have been elected trustees of the Rockefeller Foundation. Proressor JoHN Merur Couutsr, head of the department of botany at the University of Chicago and editor of the Botanical Gazette, has been elected a corresponding member of the Czecho-Slovakian Botanical Society. Coronet ArtHur 8. Dwicut, of New York, was elected president of the American In- stitute of Mining and Metallurgical Engineers, at the annual meeting in New York City held last week. Mr. E. T. Newton, formerly paleontologist to the British Geological Survey, has been elected president of the Paleontographical Society in succession to the late Dr. Henry Woodward. WE learn from the Journal of the. American Medical Association that the University of Wiirzburg has awarded the Schneider prize for the best work on tuberculosis during the last ten years to Professor K. E. Ranke of the University of Munich. The award states that by his anatomic research on the primary com- plex and the secondary phase of tuberculosis, clinical understanding of the beginnings of tuberculosis has been deepened, and a basis of pathological anatomy provided for recognition of the incipient disease. Dr. AvotpHo LINDENBERG, of the Faculty of Medicine and vice-president of the Society of Medicine, has been elected president of the Society of Biology recently founded in Sao Paulo, Brazil. Pup Seasury Surry has resigned as chief of the Latin-American division of the Bureau of Foreign and Domestic Commerce to become associate editor of Ingenieria Internacional. Caprain A. W. Fucus, formerly of the U.S. Public Health Service, has resigned to become sanitary engineer for the Missouri Pacific Rail- read, with headquarters at Memphis, Tenn. SCIENCE 237 Dr. Hersert S. Davis, until recently pro- fessor of biology in the University of Florida, has entered the permanent service of the Bu- reau of Wisheries as fish’ pathologist. Dr. Davis has during several summers served the Bureau in the capacity of temporary investiga- tor, first at the Beaufort Biological Station and later at the Fairport Biological Station, giv- ing special attention to the parasites and the diseases of fishes. Mr. R. H. Heise of the engineering labora- tory of the Western Electric Company has been awarded the Morris Lieman prize of the Institute of Radio Engineers for the most im- portant contribution to the radio art in the past twelve months. Recently his efforts have been devoted to the study of radio systems for extending Bell telephone service to locations which can not be reached by wire. Dr. S. K. Loy, chief chemist of the Standard Oil Company’s refinery at Casper, Wyoming, has been appointed consulting chemist of the Bureau of Mines in connection with oil shale work. PROFESSOR WILLIAM ERNEST Hocking, Ph. D., Alford professor of natural religion, moral philosophy and civil polity, and Pro- fessor Alfred Marston Tozzer, Ph. D., professor of anthropology, have been appointed the pro- fessors from Harvard University for the sec- ond half of the year 1922-23 under the inter- change agreement between Harvard University and the Western Colleges. Proressor B. E. Fernow, formerly head of the College of Forestry, has returned to Ithaca from Toronto, Canada, to make his home with his son, Bernard E. Fernow, Jr., who is an instructor in the College of Mechanical Engi- neering of Cornell University. Av the last annual meeting of the American Society of Mammalogists there was authorized the appointment of a Committee on Marine Mammals, with the intention that it should work primarily along the lines of conservation. The committee consists of the following: Dr. K. W. Nelson, chairman, U. S. Biologieal Sur- vey, Washington, D. C.; Mr. Gerrit S. Miller, 238 Jr, U. S. National Museum, Washington, D. C.; Dx. T. 8. Palmer, U. S. Biological Sur- vey, Washington, D. C.; Dr. Barton W. Hiver- mann, California Academy Sciences, San Wran- cisco, California; Dr. Robert Cushman Murphy, ‘American Museum of Natural History, New Wows) Iso Ne MVM PROFESSOR Wiutiam M. WHEELER, til the Bussey Iustitution, Harvard University, will dean of 1 Institute, Boston, a series The dates and su tures will he: yjects of the individual lec- Kebruary 27: ‘*A comparison of animals and Phe social beetles.’ , Solitary and social.’”” human. societies Maren 2 : “Bees, solitary and s Mareh 6: O}s ArsKeAES development, castes, March Mareh 1 eT March 16: Dr. Witbiam Ki. Gracory, Ph. D., associate or of vertebrate paleontology at Colum- 7 and curator of the Department ve Anatomy of the American Mu- Univers of Compare seum of Natural History, will deliver on March 4, 11, 18 and 25 at the Wagner Free Institute of Science in Philadelphia, four lectures on “The Hvolution of the Human Face.” Proressor W. J: Muap, of the department of geology of the University of Wisconsin, gave a course of twelve lectures in metamorphic geology at the University of Chicago during the first half of the winter quarter. Dr. Woops Hurcuinson, of New York, ad- dvessed the staff of the Mayo Clnie on Janu- ary 18; he discussed “Causes of high death rates reported.” Dr. Joun H. Stoxus, of the Mayo Clinic, recently addressed Institutes in Memphis, Tennessee, and Louisville, Kentucky, as a special consultant of the United States Pubhe Health Service. Dr. Haroup Hipsrrt, of Yale University, addressed the students of the Department of Chemistry of Oberlin College, cn February 8, on “Recent work on the constitution of starch ‘SCIENCE [Vou. LV, No. 1418 and cellulose.” On February 10, he lectured to the Syracuse Section of the American Chemi- eal Society on: “The role of alkali in the future development of the cattle-fecd, ceilulose, wood- fuel industries,” and, on the following day spoke to the graduate students of the department of chemistry of Syracuse University and of the New Yerk State College of Worestry on “A review of recent work on ulp, and hquid ) 4 the polysaccharides.” Dr. W. W. Swryein, of the zoology depart- ment of Vale University, lectured recently at Mount Holyoke on “The effect of thyroid se- evetion upon growth and development.” Cuartpgs Leonarp Bouron, professor of mathematies at Harvard University, died on Hebruary 20, aged fifty-three years. CHarins Lnwis TAytor, president of the Carnegie Hero Mund Commission and chairman of the Carnegie Relief Fund, died on February 3 in Santa Barbara, California, at the age of sixty-five years. He was prominent as a metal- lurgist and chemist. Roserr L. Jack, for many years government geologist in Queensland, died at Sydney, New South Wales, in November, at the age of seventy-six years. Mr. J. Fiscumr-Hinnpn, professor of elec- trotechnies and diveetor of the Hlectrotechnic Institute of the Winterthur Technical College, died on January 13, at the age of fifty-two years. Emine Rivibre, well-known for his, explora- tions of paleolithic caves of Mentone and the south of France, died in Paris on January 20, at the age of eighty-six years. THE ninetieth annual meeting cf the British Medical Asseciation will be held from July 25 to 29, at Glasgow, under the presidency of Sir Wilham Macewen, F. R. S. Ir is proposed to place a bronze memorial tablet to Professor Sheridan Delépine in the Public Health Laboratory at Manchester, and old pupils and friends have been invited to subseribe sums not exceeding one guinea. In connection with the matter a committee has MarcH 3, 1922 been formed, including Sir Henry Miers, vice- chancellor of Manchester University; Sir Hd- ward Donner, Dr. Niven, Medical Officer of Health of Manchester; Dr. Brinley, Dr. Slater, ~My. Heap, and Dr. Sidebothan. A report has been issued of the proceedings of the conference on the problem of the un- usually gifted student, called by the Divisions of Educational Relations and of Anthropology and Psychology of the National Research Coun- cil. This conference was held on December 23, 1921, and was referred to in Science of January 20, 1922. A copy of this report in mimeographed form wili be sent to any one interested upon application to Dr. Vernon . Kelloge, chairman, Division of Educational Re- lations, National Research Couneil, 1701 Massa- chusetts Avenue, Washington, D. C. We learn from the London Yimes that the Commonwealth Government will place a war- ship at the disposal of astronomers who ave ‘going to visit the northwest of western Australia in September to observe the total eclipse of the sun on September 21. The apparatus is to be established at Wollal, a lonely point on the coast between Port Hedland and Broome. The party, for whom an observation camp will he created, includes Dr. W. W. Campbell, director of the Lick Observatory, California, and Mrs. Campbell; Dr. Moore and Dr. Trumpler, also of the Lick Observatory; Dr. and Mrs. Adams, of New Zealand; Professor Chant and three assistants from Toronto Observatory, and Aus- tralian astronomers. The Naval Meteorological Department is making arrangements for the reception of the visitors. The path of totality will be covered as follows: It begins in Abyssinia, and passes over the center of Italian Somaliland and across the Maldive Islands, where, Mr. J. Hvershed, director of the Kodai- kanal Observatory (India), will be stationed Thence it passes across the Indian Ocean to Christmas Island, the most favorable of the places where observation is feasible. Two ex- peditions are going there, one a British expe- dition, from Greenwich, consisting of Mr. H. Spenser Jones, chief assistant, and Mr. P. J. Melotte, the discoverer of the eighth satellite of Jupiter; the other a joint Dutch and Ger- SCIENCE 23 man expedition, which Professor Hinstein may possibly accompany. REFERRING to a report from Australia that the southern station of the Harvard College Observatory may he moved from Arequipa, Peru, to Queensland, the Alumni Bulletin states that there 1s no immediate prospect of such a change. An influential member of the Queens- land government suggested recently that a site might be found there which would prove more advantageous than Arequipa, and received per- mission from Harvard to go so far as to have meteorological observations made to determine the conditions for astronomical work in Queens- land. No definite offer of a site has been re- ceived, however, and it is said to be unlikely that any decision one way or the other will be made for the present. Proressor Homer R. Dinu, director of the vertebrate exhibit at the State University of Towa, will conduct an expedition to the South Seas some time next year. The primary object will be the collection of fish, but it is hoped that many birds and small mammals may also be taken. Several months will be spent visit+ ing various islands including the Marquesas, Society, Friendly, Samoan and Fiji groups. Stops may also be made in New Zealand and Japan. Other members of the party will include Mr. E. W. Brown, of Des Moines, who is fmancing the trip, and his wife and son, Robert Brown. The latter is at present study- ing under Professor Dill. Mrs. Brown, who has had considerable experience in fish paint- ing, will serve as artist on this trip and make sketches of the different species as they appear in life. A former expedition in 1920 with the same personnel was made to the Hawaiian islands and as a result many species of fish were added to the university collection. The fish will be shipped back to the United States in large tanks which are now being constructed. A new preserving fluid discovered by Pro- fessor Dill was found to be satisfactory on the Hawaiian expedition and will be used again on this trip. It retains the natural coloring of the dead fish to a large extent, which is an important factor in the collection of many of the highly colored tropical species. 240 UNIVERSITY AND EDUCATIONAL NOTES Tue Rockefeller Foundation has given six million dollars to Johns Hopkins University for the endowment and buildings of the School of Hygiene and Public Health. Ir is planned to establish a forest experi- ment station in connection with the University of California. There are twenty million acres of forest lands in the state. Tne five hundred members of the senior class at the Pennsylvania State College have voted unanimously to give the college $100 each, making a total of $50,000 as their class memo- rial endowment. Av Yale University the degree of master of science in civil engineering, electrical engineer- ing, mechanical engineering, mining engineer- ing, or metallurgical engineering may here- after be awarded to holders of a bachelor’s degree from a college or technical school of high standing who specialize for at least two undergraduate years in that branch of engi- neering in which the degree is to be taken. Dr. M. C. Merritt, professor of horticulture at the Utah Agricultural College, Logan, Utah, has resigned his position at that institution to accept the deanship of the school of applied arts at the Brigham Young- University, at Provo, Utah. Dr. Merrill will assume his new work on July 1. Dr. Horatio B. WIriiaMs, assistant pro- fessor of physiology in the College of Physi- cians and Surgeons of Columbia University, has been promoted to be Dalton professor of physiology. Dr. Karu ScHuaeprer, of the University of Zurich, Switzerland, has been appointed asso- -eiate in surgery at the Johns Hopkins Medical School. Dr. Ernst Huber, also of the Univer- sity of Zurich, has been appointed associate in anatomy. Proressor W. H. Davis, of the Iowa State Teachers’ College, has been granted a Ph.D. degree by the University of Wisconsin and has work in mycology and plant pathology at the Massachusetts Agricultural College, Amherst. assumed his SCIENCE [ Vou. LV, No. 1418 Mr. R. W. Pater, of the Geological Survey of India, has been appointed senior lecturer in geology at the University of Manchester. DISCUSSION AND CORRESPOND- ENCE DUTY ON ENGLISH BOOKS In a book-importer’s catalogue we read: ““Tt may be noted that all foreign books can be imported free of duty, as well as English books, more than twenty years old at the date of im- portation. ’’ Such, in fact, is the law of the land; but, in its application we have found grave modifica- tions. Importing a series of English scientific maga- zines some months ago we were informed that the shipment was in the hands of an import- ing or forwarding agency and would be seen through the customs and sent on upon payment for services and duty charges. In compliance with this request an amount covering charges for services and the portion of the series duti- able at the usual fifteen per cent. was forwarded the agency. The books arrived safely, appar- ently untouched or undisturbed in any way by customs officials. The dutiable portion con- After some time a bill came requesting payment for duty on the remaining three-fourths of the shipment, on that portion of the series printed over twenty years ago. Inquiry elicited the information that duty had been demanded and had been paid by the agency on the whole ship- ment. Further inquiry established the fact that duty on the whole shipment had been based on a certain precedent where an importer of books had brought in this country an integral “set”? of books, some less, some more than twen- ty years old and that the “set” was looked upon as all dutiable, indivisible. So in the “spirit” of the law our magazines were all dutiable, whatever might be their age or the age of the majority of them. So the law might call, as it did in our ease, for a duty of $6.00, but its “spirit” called for $18.00 more. Conclusion for individual importers: see to it that your foreign exporters do not send you the older and newer numbers of magazines in the same box or shipment. stituted one fourth the entire shipment. Marcu 3, 1922] We can scarcely refrain from suggesting, in the present depleted state of our Treasury De- partment, that all revenue laws should be con- structed for “spirit” attachments. G. D. Harris CoRNELL UNIVERSITY ALTERNATE BEARING OF FRUIT TREES In view of the heightened interest in the alternate bearing of fruit trees and in fruit bud formation it may be interesting to quote the following passage from the Magazine of Horticulture for 1847, volume 13, page 438. The note was written by Charles M. Hovey, editor of the magazine, author of several well- known horticultural works, and often called the father of the American strawherry, after a visit to the Pomological Gardens af Salem, Massachusetts, of Robert Manning, one of the most thorough and accurate students of horti- culture in the early days when amateur interest in fruits ran high: Passing a Baldwin apple tree in full bearing, Mr. Manning stated that it was one on which he tried the experiment of changing the bearing year. It is well known that the Baldwin only bears every other year. To obviate this was the object of Mr. Manning; and, in the spring of 1846, he spent nearly two days in cutting off all the blossoms. It had the desired effect; this year, the tree is completely loaded with fruit. This experiment is valuable, for it shows that, in a large orchard, when the trees, by chance, nearly all fruit the same year, any number of them can be made to fruit in the alternate year simply by the labor of destroying all the blossoms. Harotp B. Tukey N. Y. AGRICULTURAL EXPERIMENT STATION, GENEVA, New York THE WRITING OF POPULAR SCIENCE To tHe Epitor or Science: In looking through the “List of One Hundred Popular Books in Science” prepared by the Washing- ton Academy of Sciences for the guidance of libraries with limited income, one is struck by the number of foreign books. There are thirty-five British authors, two French (Fabre and Maeterlinck) and one German. (Hinstein) ; that is, in searching for the best books on the SCIENCE 241 various: sciences, regardless of nationality, it was found necessary to go abroad for 38 per cent. of them. This is curious since in writing for Amer- ican readers an American author has a decided advantage in that he understands their point of view and can use more or less local illus- trations and comparisons and make allusions to familiar things, which are important factors in the popular presentation of scientific ques- tions. In spite of this natural handicap on the foreign author, British books form more than a third of this carefully selected list, so it is evident that the British are doing better work in the popularization of science than we are, a conclusion that is confirmed by a comparison of imported and domestic books in publishers’ catalogues. We have in this country, for instance, nothing to compare in style of writing and attractive illustrations with the “Outline. of Science” edited by Professor J. Arthur Thomson, which is now being published in parts at 1 shilling, 2 pence, as was Wells’ “Out- line of History.” I may add that Science Service, which has been scouring the country for a year for popular science writers, has been obliged to go to England for them in many cases. This is difficult to account for since our American schools give much more attention to the sciences and to the teaching of English composition than do the British schools and since we have such an abundance of fluent and facile writers in fiction and journalism and since we have a wider reading public than any other country. But it is questionable whether the interest of the American people in scien- tifie questions has kept pace with the growing importance of science in human life. In fact some say that science is losing ground in popu- lar esteem. For instance, Dr. Alfred H. Brooks, of the U. 8. Geological Survey, said in his recent presidential address to the Washing- ton Academy of Sciences: I venture the opinion that there is to-day rela- tively less popular knowledge of science and less interest in its methods and achievements than there was a generation ago. This is a discouraging statement in view of 242 the unprecedented expenditure of money on scientific education in American schools. Epwin E. SLosson ScIENCE SERVICE, WASHIINGTON, D. C. QUOTATIONS WILLIAM JENNINGS BRYAN ON EVOLUTION! Tue only part of evolution in which any con- siderable interest is felt is evolution applied to man. A hypothesis in regard to the rocks and plant life does not affect the philosophy upon which one’s life is built. Evolution applied to fish, birds and beasts would not materially affect man’s view of his own responsibilities except as the acceptance of an unsupported hypothesis as to these would be used to support a similar hypothesis as to man. The evolution that is harmful—distinetly so—is the evolution that destroys man’s family tree as taught by the Bible and makes him a descendant of the lower forms of life. This, as I shall try to show, is a very vital matter. The latest word that we have on this subject comes from Professor Bateson, a high English authority, who journeyed all the way from London to Toronto, Canada, to address the American Association for the Advancement of Science the 28th day of last December. His speech has been published in full in the Janu- ary issue of SCIENCE. Professor Bateson is an evolutionist, but he tells with real pathos how every effort to dis- cover the origin of species has failed. He takes up different lines of investigation, commenced hopefully but ending in disappointment. He concludes by saying, “Let us then proclaim in precise and unmistakable language that our faith in evolution is unshaken,” and then he adds, “our doubts are not as to the reality or truth of evolution, but as to the origin of spe- cies, a technical, almost domestic problem. Any day that mystery may be solved.” Here is optimism at its maximum. They fall back on faith. They have not yet found the origin of 1 From an article in the New York Times for February 25. The editor states that Mr. Bryan will be answered by Professor Henry Fairfield Osborn and Professor Edwin Grant Conkin in the issue for March 2. SCIENCE [Vou. LV, No. 1418 species, and yet how can evolution explain life unless it can account for change in species? Is it not more rational to believe in creation of man by separate act of God than to believe in evolution without a particle of evidence? The objection to Darwinism is that it is harmful, as well as groundless. It entirely changes one’s view of life and undermines faith in the Bible. Evolution has no place for the miracle or the supernatural. It flatters the egotist to be told that there is nothing that his mind cannot understand. Evolution proposes to bring all the processes of nature within the comprehension of man by making it the ex- planation of everything that is known. Crea- tion implies a Creator, and the finite mind cannot comprehend the Infinite. We can under- stand some things, but we run across mystery at every point. Evolution attempts to solve the mystery of life by suggesting a process of development commencing “in the dawn of time” and continuing uninterrupted up until now. Evolution does not explain creation; it simply diverts attention from it by hiding it behind eons of time. If a man accepts Darwinism, or evolution applied to man, and is consistent, he rejects the miracle and the supernatural as impossible. He commences with the first chap- ter of Genesis and blots out the Bible story of man’s creation, not because the evidence is insufficient, but because the miracle is incon- sistent with evolution. If he is consistent, he will go through the Old Testament step by step and cut out all the miracles and all the supernatural—the virgin birth of Christ, His miracles and His resurrection, leaving the Bible a story book without binding authority upon the conscience of man. * % eo * * * Christians do not object to freedom of speech; they believe that Biblical truth can hold its own in a fair field. They concede the right of ministers to pass from belief to ag- nosticism or atheism, but they contend that they should be honest enough to separate them- selves from the ministry and not attempt to debase the religion which they profess. And so in the matter of education. Chris- tians do not dispute the right of any teacher to be agnostic or atheistic, but Christians do deny Marcu 3, 1922] the right of agnostics and atheists to use the public school as a forum for the teaching of their doctrines. The Bible has in many places been excluded from the schools on the ground that religion should not be taught by those paid by public taxation. If this doctrine is sound, what right have the enemies of religion to teach irreligion in the public schools? If the Bible cannot be taught, why should Christian taxpayers permit the teaching of guesses that make the Bible a le? A teacher might just as well write over the door of his room, “Leave Christianity be- hind you, all ye who enter here,” as to ask his students to accept an hypothesis directly and irreconcilably antagonistic to the Bible. Our opponents are not fair. When we find fault with the teaching of Darwin’s unsup- ported hypothesis, they talk about Copernius and Galileo and ask whether we shall exclude science and return to the dark ages. Their evasion is a confession of weakness. We do not ask for the exclusion of any scientific truth, but we do protest against an atheist teacher being allowed to blow his guesses in the face of the student. The Christians who want to teach religion in their schools furnish the money for denominational institutions. If atheists want to teach atheism, why do they not build their own schools and employ their own teachers? If a man really believes that he has brute blood in him, he can teach that to his children at home or he can send them to atheistic schools, where his children will not be in danger of losing their brute philosophy, but why should he be allowed to deal with other people’s chil- dven as if they were little monkeys? We stamp upon our coins “In God We Trust”; we administer to witnesses an oath in which God’s name appears; our President takes his oath of office upon the Bible. Is it fanatical to suggest that public taxes should not be em- ployed for the purpose of undermining the nation’s God? When we defend the Mosaic account of man’s creation and contend that man has no brute blood in him, but was made in God’s image by separate act and placed on earth to carry out a divine decree, we are de- fending the God of the Jews as well as the God of the Gentiles; the God of the Catholies SCIENCE 243 as well as the God of the Protestants. We believe that faith in a Supreme Being is essen- tial to civilization as well as to religion and that abandonment of God means ruin to the world and chaos to society. Let these believers in “the tree man” come down out of the trees and meet the issue. Let them defend the teaching of agnosticism o atheism if they dare. If they deny that the natural tendency of Darwinism is to lead man. to a denial of God, let them frankly point out the portions of the Bible which they regard as consistent with Darwinism, or evolution ap- plied to man. They weaken faith in God, dis- courage prayer, raise doubt as to a future life, reduce Christ to the stature of a man, and make the Bible a “serap of paper.” As religion is the only basis of morals, it is time for Chris- tians to protect religion from its most insidious enemy. SCIENTIFIC BOOKS James Hall of Albany, Geologist and Paleon- tologist, 1811-1898. By Joun M. Cuarke. Pp. 565, illustrated. Albany, 1921 (8S. C. Bishop, $3.70, net). In this book we have a very informative and highly entertaining history, not only of Pro- fessor James Hall, but of most of the other pioneers in American geology and _ paleon- tology as well. It is replete with interest for all men of science. Hall was an extraordinary man in many ways, turning out a prodigious amount of geologic work, and furnishing, by his dyna- mism, an inestimable “creative impulse to study and research.” He was sensitive to a remark- able degree, irascible, and with a surpassing ambition. His nervous system always taut, he “played on a harp of a thousand strings.” In consequence he appears to have been in trouble with most of his associates, and yet he was “a confiding man, forever trusting the plausible stranger, even while distrusting his most de- voted friends.” He lost much money in mining ! Hall’s scientific career began in 1836 and for sixty-two years he dominated Paleozoic geology, and more especially paleontology, in 244 North America. Thirteen great quarto vol- umes and at least a five-foot shelf of works on paleontology are his enduring monuments. The wonderful Fourth District of western New York was Hall’s “patent”? and in it he labored for five years unraveling its geology, “the most excellent piece of field work he ever did,” in the course of which was established a large part of the New York System of geolog- ical formations. Then came the ever widening Paleontology of New York, the dominant note of Hall’s long life. An insatiable collector, without ever knowingly having a duplicate fossil, he sold the worked-up collections only to buy and collect others with the money so ob- tained. Appropriations or none by New York or other states, he went on constantly garner- ing more material. As one reads the book, the thought comes readily that New York State has been. the mother of geologists—one almost comes to the belief that all American geologists between 1843 and 1890 came from the Empire State or got their training there. We also see the passing show of the master minds that devel- oped the geology of the entire Mississippi Valley, since they were all for one reason or another worshippers at the Albanian shrine. “Fis influence guided official geologic move- ments in every state where they were inau- gurated, and in many his hand took a helms- man’s part.” Hall’s influence was also great in Canada between 1843 and 1869, since his relations with the director of the Geological Survey of Canada, Sir William Logan, “were openly harmonious.” Hall’s zenith of scientific attainments came between 1857 and 1861. Some years before, he presented at the Montreal meeting of the American Association for the Advancement of Science his “most notable performance in philosophical geology,” The Geological His- tory of the North American Continent. In this essay, published in 1861, he set forth two essential propositions in regard to mountain making, and they are the fundamentals on which our modern conception of these struc- tures depends. These are: 1. That ranges of folded mountains exist only where sediments have uniformly accumulated to SCIENCE [Vou. LV, No. 1418 maximum thickness and that such maximum accumulation is possible only by corresponding depression of the sea bottom along the edges of continents delivering such sediments. . . 2. That folded mountains result from the crumpling of the upper layers only of these ac- cumulated deposits, a consequence of the adjust- ment of the later sediments to a deepening but contracting depression. When Hall was sixty years of age, he was “at the threshold of his greatest productive- ness,” and he worked in this way: Of all the corps of men engaged upon this work, Mr. Hall himself was, in these days, the most diligent. Nothing that entered into his publications escaped his criticism and review and he was keen and quick in the preparation of his manuscript. Up and at his desk soon after break of day, with a cup of tea and a panada at his elbow, he found his quiet hours before his assistants came around. And after they had gone there were the evening hours which seldom found him away from his work room. It was his habit when at work to sit before his desk on a revolving piano-stool; his backbone needed no support and an easy chair he abhorred. But alongside his desk he kept, for his callers, a deep scoop-shaped great chair into which the visitor shriveled as he sank down into insignificance near the floor, while his vis-a-vis, erect on his stool, towered majes- tically over him. It was a strategic advantage and in many an engagement commanded the enemy ’s works. When the reviewer went to Albany in 1889 as Hall’s private assistant, the latter was a pic- turesque old man: His round, full-bodied figure, his heavy snowy beard running well up over his ruddy cheeks, an always erect carriage and a square level look out from under thick brows and over his Moorish nose; dressed in an old coat and in trousers which buttoned down the sides after the fashion of 1830, he was bound to attract attention and curiosity. Every morning. . . his man Tom drove him from his home in a broken-down, one-seated eart which had once owned a top but lost it long since, drawn by a broken-down old nag which had also seen better days and had like as not been taken in exchange for apples or old speci- men boxes, his capacious snow-crowned figure eapped with a chimney-pot hat towering above his diminutive driver—the jogging figure through the Albany streets was sure to compel notice. Magcu 3, 1922] Extolled by LeConte as the “founder of American geology,” and by MeGee as the “founder of American stratigraphy,” said by Dana to be the man without whom “the geo- logical history of the North American con- tinent could not have been written,” Hall’s present biographer concludes that he ‘was in truth the apostle of historical geology.” Much praise is due Dr. Clarke for the lively way in which he sets Hall—and many of his contem- poraries—before us in these pages. The task was a great one, attended with peculiar diffi- culties, and its accomplishment reflects high credit upon the author. The paleontologie sun rose in New York in 1836, and its warmth still radiates from the Hmpire State throughout the North American continent! CHARLES SCHUCHERT SPECIAL ARTICLES THE SYNTHESIS OF FULL COLORATION IN PHLOX In the issue of Genetics for March, 1920, the writer published facts bearing on the color of the flower blade in Phlox Drummondii. Certain F, purples that were full-colored and self-colored appeared as the progeny of two plants whose blades were a clear white. These F, purples, when self-pollinated, gave rise to an F, group comprising several types of co- rolla. WV ; 7 99 SrneLE Copies, 15 Crs. Vou. LV, No. 1420 Fripay, Marcu 17, 1922 ANNUAL SusBscriPrion, $6.00 Apochromatic Objectives For Immediate Delivery HE consideration of our customers, despite numerous delays, has so encouraged us to carry forward our work of producing really high-grade apochromatic objectives in the face of adverse conditions that we believe many users will be interested to know that we are now prepared to fill orders at once. Bausch & Lomb Apochromatic Objectives are of the highest quality, so recognized by most critical users. Through extended investigations we have been able to correct them for flatness of field, without i impairing working distance and numerical aperture. ke For immediate delivery we offer the 16 mm, 8 mm, 4 mm and 2 mm objec- tives, as well as the complete line of Compensating Eyepieces. Write for new, illustrated descriptive leaflet. Bausch & Lomb Optical Co. 409 St. Paul Street, Rochester, N. Y. 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A support is provided to hold condensers, thermometers, etc. The area of the bath is 13 x 13 inches and the top is provided with four holes each 5 inches in diameter and provided with concentric rings. Made for stock for 110 volt and 220 volt currents and may be used on either alternating or direct current. It is provided with an attachment for maintaining a constant water level in the bath and with cord and plug for attaching to the electric line and full directions for operation. Price complete without glass or porcelain ware_______________-____ $85.00 DESCRIPTIVE CIRCULAR UPON REQUEST E. H. SARGENT & CO. Importers, Makers and Dealers in Chemicals and Chemical Apparatus of High Grade Only 155-165 East Superior Street CHICAGO, ILL. ESTABLISHED 1852—SEVENTY YEARS IN BUSINESS CIE C A Weekly Journal devoted to the Advancement of Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS Il Liberty St., Utica, N. Y. Garrison, N. Y, New York City: Grand Central Terminal Single Copies, 15 Cts. Annual Subscription, $6.00 Entered as second-class matter January 21, 1922, at the Post Office at Utica, N. Y.. under the Act of March 3, 1879. Vou. LV Marcu 17, 1922 No. 1420 Doctorates conferred in the Sciences by American Universities in 1921: CALLIE HULL and Dr. CLARENCE J. WEST.......-...----- 271 The Organization of Knowledge: Dr. FRED- SER LO aL SEL © Rh h MANN eters oes neonate chen scene 279 American Biological Stains compared with those of Griibler: Dr. H. J. ConNn.........-..---- 284 Scientific Events: The Standardization of Industries; More ““Glass Flowers’’ at Harvard; The New Building for Forestry at Yale University; The Washington Conference on Public BET COU ET ay eee camer OM sierra tena pub aiaan NHS venus secnes 285 Scientific Notes and News -. 288 University and Educational Notes.........-.-.--..--. 291 Discussion and Correspondence: Have the Streams of Long Island been deflected by the Earth’s Rotation: Dr. O. E. JENNINGS. Legislation to suppress Truth: X. Ecological Investigations along the Red River: DR. CaRL HarTMAN. Atomic Nuclei: Prorressor J. C. McLENNAN Notes on Meteorology and Climatology: New Discussion of Temperatures in the United States: Dr. C. LERoy MEISINGER.... 292 291 Special Articles: The Production of Non-disjunction by X-rays: Dr. JAMES W. MAVOR......022...2..022. 295 The American Association for the Advance- ment of Science: Report of the Secretary-treasurer of the _ Pacific Division: Dr. W. W. SARGEANT........ 297 The American Astronomical Society: Pro- FESSOR JOEL STEBBINS....-...-------ccc-ccscssecseeccenene 298 DOCTORATES CONFERRED IN THE SCIENCES BY AMERICAN UNI- VERSITIES IN 1921 THROUGH the generous cooperation of the registrars of the various American universities granting doctorates in the sciences, the Re- search Information Service of the National Research Council is able to offer the following compilation of doctorates. granted during the collegiate year 1920-1921. Through this same cooperation statistics are now available for the period 1916-1919. The information for these three years has not been compiled heretofore and therefore was lacking in the tables as published last year (Screncr, 52, 478, 514). These figures are of value as an indication of the academic activity during the World War. As would be expected, the number of doctor- ates fell off as the size of the American army inereased (1917, 372; 1918, 293; 1919, 180). This is a confirmation of the acknowledged fact that the scientific men of the country played an increasingly important part in the activities of the army and navy. In 1921 there were 332 doctorates conferred in the natural sciences by 32 institutions, as compared with 323 by the same number of institutions in 1920. (The figures reported in 1920 by institutions and by subjects have been corrected in certain cases from later informa- tion). It is interesting that the figures for 1917 should be so much higher than those for any other year reported in the tables. How long will it be before those figures are again reached ? Marked changes in the order of institutions are in the shift of Minnesota from nineteenth place in 1920 to tenth place in 1921, and of George Washington from tenth place in 1920 to twenty-sixth place in 1921. Comparisons of this kind are of uncertain significance because the number of degrees granted by an institu- tion during any collegiate year depends upon many factors. 272 SCIENCE [Vou. LV, No. 1420 DOCTORATES CONFERRED IN THE SCIENCES BY AMERI- TreEsES DISTRIBUTED ACCORDING TO SuBsECT CAN UNIVERSITIES é : i 0 We Agriculture 12713 714 "15 716 17 718719 720, “21 CoRNELL: Charles Loring Allen, ‘‘Eiffeect of age Chicago —------- 37. 16 28 53 53 389 55 28 43 42 of sire and dam on the quality of offspring in Caan ee ORE ag 9 BA) SR) GD) ON) SB) EB danicons a) i 2 34 2 7 is E fi (Colenaby - 386 27 2127 Sh Sr 2 27“ Tutiwors: Jacobus Stephanus Marais, ‘¢ Compara- Yale --- TE) HIS) SIN BA ORO NA ERS Pf 5 j Harvard 92) 128) 33h 16) SOM dSueula 28h 25 tive agricultural value of phosphates of California ___--- Ty Oa ay a PRY Ge a) yep aluminium, iron and ecalcium.’? William Bar- Johns Hopkins - 23 21 18 23 22 24 7 7 21 21 bour Nevens, ‘‘Amino acid content and nutri- Illinois -------- Tey HL Sale RG 18) RS) GS)" PY a) Pe f : ie ive value of protein: meal. Wisconsin __---- Hy BV eg aang ig) "Oa a ‘ © of proteins of cottonseed mea Minnesota -_---- Dye Siew4 lula an Os CLOW Bip d ai aT 6 Anatomy Ohio State ----- 5 0 0 1 2 8 7 3 6 68) 6 Minnesota: Leroy Adelbert Calkins, ‘‘ Morpho- i ECO OBE OB. 8 Z Seay TEBE i i BUST SKU Tala ernest es metry of human fetus with special reference OWa ----------- - N , if - Pod ees Gras Mate Lb) PM UMEY STM sah tev pel gy a7 to obstetric dimensions of the head.’? Homer Michigan -___--- GW BB) TO) SB OBE a Oia Barker Latimer, ‘‘Postnatal growth of the Clark ---------- OS LO nc i : 3 3 body. Systems and organs of the single-comb Pennsylvania --- 9 9 By SAEs nai) 7 C 39 : 2 ae SS na RATA Ton ANNI AAU i api ed UA NS Leghorn chicken. John Charmley, MUchecualleyy, Bea ee ee BUSTA PAR LS LZ NS UNO MORE oa ‘“Tntraneural plexus of fasciculi and fibers in Nebraska ------- Ova v2 valine SUm On hacy awl nnn: O) nina the sciatic nerve.’?’ Hjalmar Laurits Osterud, Wey NOES aes POS a EOE Same a el CAROL Ua Nea Ge “*Postnatal growth and development of repro- Radcliffe ------- CHRON MMON MON MON TEs ObmuplnneT uns SAR HALA fade A de HOD EEE EPR aL GUE oT Ey Gye BL WEA Canal ear ies ctive tract in female albino rat. Bryn Mawr ----- 3 0 2 0 3 2 1 1 1 2 Anthropology eee 1 DN Hai yee dav 9 . ST ata Deaineal ity cai (Opes i CALIFORNIA: Guy Montgomery, ‘‘Studies in prim- Geo. Washington 2 1 2 4 5 8 3 3 9 2 any 5 Se AN NEE eee LN OM onibaekctoraen a avo scunaiie aad os ate, itive folksong. Eda Lou Walton, ‘‘ Navaho Pittsburgh _---- Dds SS OMI TAN On rons NL en Dei ay traditional poetry.’’ Catholic ___ 1 0 0 2 1 2 4 0 1 1 Harvarp: Andrew Affleck Kerr, ‘‘Similarities in i 2 LORCA Sure wane ile hS RCN ; 2 TE EEE ‘ AIM HIV ELS EaeAIaRD sis HMR AAD A material culture between old and new world.’’ ansas a a Goan ll Oe OON ROMOLUhOn tat tomo Samuel Kirkland Lothrop, ‘‘Ceramices of north- Missouri _------ OL Cave eT Gabinete a2 CS cel Nw OHNO ern Costa Rica and western Nicaragua.’’ Northwestern --. 0 0 0 1 3 3 2 0 0 0 ee Notre Dame ---- - = 5 2 S 0 1 0 0 0 Bits s HORORY i Washington _--- - - - - = O 1. 0 ©0 © CALIFORNIA: Priscilla Fairfield, ‘‘ Indeterminate Virginia -------- 2 2) 2) 0 2) Ve OO) TO cases of the orbit problem.’’ Hamilton Moore Boron UL EO AIT eee ean RENO Sarat Jeffers, ‘‘Investigation of the orbits of the Totals --.-------273 234 241 309 332 372 293 180 323 332 . two components of Taylor’s comet (1916 I).’? i Jessica May Young, ‘‘Cause of the non- DOCTORATES DISTRIBUTED ACCORDING TO SCIENCES é ayes : i appearance of certain periodic comets on their Sol Wrz isabel 16.217 28h ue1 9 20 a2 predicted returns.’’ Chemistry _-_-__78 68 71 85 115 108 75 54 96 134 CHIcAGo: Alice Hall Farnsworth, ‘‘Comparison of Zoology -- 26 25 32 33 30 35 24 38 36 photometrie fields of “6-inch doublet, 24-inch 9 } 9 . . Q Boy CER eet Gea KEE Rea EU EEE cr reflector and 40-inch refractor with some inves- Physics -------- 30 2223" (3TH sas 2ael a dBhy 19) G28 Toi a ae : Psychology -...29 24 12 22 19 32 30 21 38 26 tigation of the astrometric field of the re- Bacteriolosyjesse (6) 3) 0ie Oct 47d md MEL err en Tintin 9) flector.’’ Edison Pettit, ‘‘Form and motions Mathematics ---- 22 21 25 23 34 30 23 7 19 16 of solar prominences.’’ Geology ------- Qu TAMAS MoT Ae CAMILA NUS una Tqulaat : Physiology _---- 22H Oho M TS hill 4a p16 cael Win as13 es Bacteriology Astronomy ----- 21 2 7 6 5 0 1 4 5 £CaALIFoRNIA: Laurence Fleming Foster, ‘‘Growth, Geography ------ OAL NSIC Saye sa miyL in enOy )eoS) amo) viability and metabolism of Streptococcus unl Gy TOMO SUNNY 3) SetalO NW Sigal ‘ AEE tia & a hemolyticus.’? Anthropology --- 0 3 2 6 1 4 2 0 2 4 i ye i Pasar ll o6806lm88lC«tC«CSGC‘(DCtidBss«iad2s:si‘«iSCt‘<‘}!S”SC CAO: Paul Roberts Cannon, ‘‘ Effects of diet Metallurgy ~---- OG Ol MONA DL Anan U tas eta la aivLie i Or a2 on the intestinal flora.’’ John Everett Gordon, Engineering en OM a sina ate aa “‘T. Relationship of pneumococcus to acute Fe aaa SL aN aaa eal Ysa enIL CAME, infections of upper respiratory tract in man. IT Mineralogy —---- ON WOW OM MUON Oy On NOME NOMs OKO an eens AN eae ae Meteorology: 22-210. 0/4 0) 6/0) 240). 1 )92)205 0). 0 Gram negative cocci in acute infections of the Paleontology ---- 0 © 4 2 3 4 0 0 oO 0 upper respiratory tract.’’ Bernard Wernick ANIM eT Roe ‘ ; G s Tenis 234 241 309 332 372 293 180 323 332 Hammer, ‘‘ Volatile acid production of S. lac Marcy 17, 1922 ticus and the organisms associated with it in starters. ’’ CorNeLL: Aaron Bodansky, ‘‘Enzyme studies on Solanum eleagnifolium.’’ Charles Milton Car- penter, ‘‘Bacteriology of female reproductive organs of cattle and its relation to diseases of ealves.’’ Harrison August Ruehe, ‘‘ Effect of the process of manufacture on germ content of bulk condensed milk.’’? William Alonzo Whi- ting, ‘‘Possible relationship existing between the grouping of bacteria in market milk and the utensil flora.’’ HarvarD: Boris Aronovitch, ‘‘Soluble toxie sub- stances produced by the organisms of the colon- typhoid group.’’ George Hoyt Bigelow, ‘“Allergy in pneumonia as evidenced by intra- eutaneous reaction.’’? Leland David Bushnell, ““Bacteria found in spoiled canned asparagus.’’ Dwight Lewis Sisco, ‘‘ Epidemiological study of food poisoning.’’ Jouns Hopkins: Howard Benjamin Cross, ‘‘Pha- gocytosis in relation to terminal infections.’’ Kansas: Noble P. Sherwood, ‘‘Studies on com- plement. ’’ MassacHusrerrts Instirur oF TECHNOLOGY: Murray Philip Horwood, ‘‘Investigation of ~ public health and sanitation of certain urban communities in Oklahoma.’’ MINNESOTA: Winifred Mayer Ashby, ‘‘Destruc- tion of transfused blood in normal subjects and in pernicious anemia patients. ’’ Yave: Harry Asher Cheplin, ‘‘ Transformation of intestinal flora with special reference to the implantation of Bacillus acidophilus.’’ Barnett Cohen, ‘‘Effects of temperature and hydrogen ion concentration upon viability of Bacterium colt and B. typhosum in suspensions in water.’’ Charles Shelby Gibbs, ‘‘Factors that govern production of diphtheria toxin in artificial culture media.’’ Botany CALIFORNIA: Frederick Monroe Essig, ‘‘Morphol- ‘ogy, development and economic aspects of Schizophyllum commune Fries.’’ Alice Maria Ottley, ‘‘Revision of Californian species of Lotus.’’ Albert Julius Winkler, ‘‘Internal browning of the yellow Newtown apple.’’ Crtcaco: Seott Verne Eaton, ‘‘Sulfur content of soils and its relation to plant nutrition.’? Hope Sherman, ‘‘Respiration of dormant seeds.’’ Perry Daniel Strausbaugh, ‘‘Dormaney in the plum.’’ CoRNFLL: Sarkis Boshnakian, ‘‘Genetics of squareheadedness and of density and the rela- SCIENCE bo =I tions of these to other characteristics in wheat.’’? James Marshall Brannon, ‘‘ Influence of certain sugars on plants with particular reference to dextrose and levulose.’’ William Moore, ‘‘Spreading and adherence of arsenical sprays.?? Harry Ashton Phillips, ‘‘ Effect of climatie conditions on fruit trees in relation to blooming and ripening dates.’’ Thomas Wyatt Turner, ‘‘Mechanism of physiological effects of certain mineral salts in altering the ratio of top growth to root growth in seed plants.’’ Thomas Kennerly Wolfe, ‘‘Biometrical study of characters in maize.’’ Harvarp: Edward Franklin Gaines, ‘‘Genetics of bunt resistance in wheat.’’ Felix Gustaf Gus- tafson, ‘‘ Respiration of certain lower fungi.’’ Herbert Kendall Hayes, ‘‘Inheritance in wheat and maize. JI. Inheritance of seed and spike characters in crosses between varieties of Triti- cum vulgare Vill. II. Production of high pro- tein maize by Mendelian methods. III. Critical analysis of methods of maize breeding.’’ Ondess Lamar Inman, ‘‘ Respiration as related to injury and recovery.’? James Plummer Poole, ‘‘Comparative anatomy of the leaf of the Cyeads with reference to the eycadofili- cales.’? Inurnois: Cecil Frederick Patterson, ‘‘Growth in seedlings of Phaseolus vulgaris in relation to humidity and temperature.’’ InpIANA: Flora Charlotte Anderson, ‘‘ Develop- ment of flower and embryogeny in Martynia Louisiana Mill.’’ Iowa: Raymond Albert French, ‘‘Apogamous reproduction of Lactuca Ludovinciana (Nutt) Riddell. ’’ MicuiganN: Carl Downey LaRue, selection within pure lines guepini desm.’?’ Minnesota: Paul Work, ‘‘Effects of nitrate of soda on the nutrition of the tomato.’’ PENNSYLVANIA: Charles Homer Arndt, ‘‘Growth of field corn as affected by iron and aluminium salts.’ Sranrorp: L. J. M. Baas-BEcxine, ‘‘Origin of vascular structure in the genus Botrychium.’’ Wasuineton UNiversity: Robert William Webb, “*Germination of spores of certain fungi in relation to hydrogen ion concentration.’’ George Miller Armstrong, ‘‘Sulfur nutrition of fungi as affected by hydrogen ion concentration. ’’ WISCONSIN: Eloise Gerry, ‘‘Oleoresin production: Microscopie study of effects produced on the woody tissues of southern pines by different “*Results of of Pestalozzia 274 methods of turpentining.’’ James Geere Wickson, ‘‘Value of certain nutritive elements in development of the oat plant and their rela- tion to chemical composition of grain and straw.’’ Yate: Albert Frederick Hill, ‘‘Vegetafion of Penobseot Bay Region, Maine.’’ Chemistry Brown: Samuel Reed Damon, ‘‘Bacteria as source of the growth-promoting principle, water-soluble B; identity of water-soluble B and the antineuritic vitamine.’’ CALIFORNIA: Dwight Cooley Bardwell, ‘‘ Hydro- gen as a halogen in metallic hydrides.’’ The- ophil Frederic Buehrer, ‘‘Critical solution tem- peratures of white phosphorus with various liquids.’’ Paul Steere Burgess, ‘‘Drained marsh soil, unproductive for peas.’’ William Henry Hampton, ‘‘ Potential of the iron elec- trode.’’ Thorfin Rustin Hogness, ‘‘Surface tensions and densities of liquid mercury, ead- mium, zine, lead, tin, and bismuth.’’? Sherwin Maeser, ‘‘Physical and chemical properties of some tertiary amine-oxide derivatives.’’ Cuicaco: Steward Basterfield, ‘‘ Derivatives of isourea and their pharmacological action.’’ Henry Leon Cox, ‘‘ Derivatives of linolic acid.’’ Frank Louis DeBeukelaer, ‘‘ Derivatives of phenylethyl- and phenyldiethylacetic acids.’’ Lillian V. Eichelberger, ‘‘Transformation of maleic to fumaric acid.’’ Warren Walter Ewing, ‘‘Attraction of mereury for other liquids.’’ Leo Finkelstein, ‘‘I. Determination of radium in meteorites by the emanation method. II. Measurement of ranges of alpha particles by modified Bragg apparatus.’’ Aubrey Chester Grubb, ‘‘Chemical reactions in the corona.’’ Robert Stern Landauer, ‘‘Tri- atomie hydrogen.’’ Louis Melvin Larsen, ‘*T, Nitrotriphenylamines. II. Oxidation of diaminophenols.’? George Ross Robertson, ‘*Organic derivatives of arsenic.’’ Frank V. Sander, ‘‘Preparation and resolution of di-l, 3-dihydroxybutyrie acid.’? James H. C. Smith, ‘“T. Estimation of sodium hyposulfite. II. Ar- senic derivatives of phenylaminoacetie acid.’’ Herman Vance ‘Tartar, ‘‘Constitution of murexide and theory of dyes.’’ Harry Ben- jamin VanDyke, ‘‘Study of distribution of iodine in thyroid gland.’’ Edgar Wertheim, ‘“Preparation of dl-p-sec.-butylphenylhydrazine. Resolution of dl-p-sec.-butylaniline.’’ Ying Chang Cheng, ‘‘Cohesion, adhesion, tensile strength, tensile energy, negative surface en- SCIENCE [Vou. LV, No. 1420 ergy, interfacial tension and molecular attrac- tion.’’ Cincinnati: Joseph Laurence Donnelly, ‘‘Quan- titative study of the action of monochloracetic acid upon various amines.’’ Edward Charles Mason, ‘‘Pharmacological action of lead in organic combination. ’’ CLaRK: Charles Buell Hurd, ‘‘ Equilibria between calcium, hydrogen and nitrogen.’? Walter William Lueasse, ‘‘Specific conductance of con- centrated solutions of sodium and potassium in liquid ammonia.’’ Edward Zeitfuchs, ‘‘ Vapor pressure of mixture of ammonia and xylene in neighborhood of their critical solution tempera- ture. Molecular weight of sodium tellurium complex in liquid ammonia.’’ CoLtumsB1A: Howard Adler, ‘‘Formation of addi- tion compounds between formic acid and metallic formates; factors affecting stability of these compounds.’’ David John Beaver, “«Hffeet of certain electrolytes on stabilizing and precipitating gold sols.’’ Jacob Julius Beaver, ‘‘Compound formation in phenol-cresol mixtures.’’ Mary Letitia Caldwell, ‘‘Experi- mental study of certain diamino acids.’’ Ar- thur William Davidson, ‘‘Formation of addi- tion compounds between sulfuric acid and metallic sulfates.’? Te Pang Hou, ‘‘Iron ton- nage.’’?’ Norma Eva Johann, ‘‘Composition of ammonium phosphomolybdate and the deter- mination of phosphorus.’’? Samuel Jacob Kiehl, “¢Hydration of sodium metaphosphate to ortho- phosphate in varying concentrations of hydro- gen ion at 45°.’’ Victor Kuhn La Mer, ‘‘ Effect of temperature and concentration of hydrogen ions upon rate of destruction of the antiscor- butic vitamine.’’ Leland Judson Lewis, ‘‘Hy- drolysis of fats by reagents made from cymene.’’ Ernest Elmer Lyder, ‘‘Thermal decomposition of oil shale.’?’ Alice R. T. Mer- rill, ‘‘ Experimental studies of eystine.’’ Martin Meyer, ‘‘Dehydrothiotoluidine, its isomers, homologues, analogues and derivatives.’’? Wil- liam Alvin Mudge, ‘‘Saturated potassium chloride calomel eell.’’ Francisco A. Quisum- bing, ‘‘Conditions affecting determination of reducing sugars by Fehling solution.’’ Harold Lester Simons, ‘‘Mechanism of hydrolysis of sucrose by invertase.’’ Jesse Wilbur Stillman, “Determination of copper by electrolytic deposition.’? Paul Miller Giesy, ‘‘ Placental hormone. ’’ CorNELL: Archibald Mortimer Erskine, ‘‘Reac- action between hydrazine and hydrogen per- Marcu 17, 1922] JOHNS oxide.’’? Axel Ferdinand Gustafson, ‘‘ Effect of drying soils on water-soluble constituents.’’ Archie Bernhard Hoel, ‘‘Edison storage cell.’’ Howard Campbell Jackson, ‘‘ Neutralization of cream for buttermaking.’’ Stuart Deming Jackson, ‘‘o-Cresolsulfonphthalein and some of its derivatives.’’ Louise Kelley, ‘‘p-Hydroxy- benzoyl-o-benzoic acid and some of its deriva- tives.’’ Alexander McTaggart, ‘‘Influence of certain fertilizer salts on the growth and nitro- gen content of some legumes.’’ John Graham Thompson, ‘‘Removal of silicon from zirkite ore in the electric furnace.’’ GroRGE WASHINGTON: Carl D. Garby, ‘‘Hydro- gen ion concentration and acidity of corn meal undergoing spoilage.’’ Harvard: Goodwin LeBaron Foster, ‘‘ Glucose to nitrogen ratios of the phlorhizinized dog, cat and rabbit and the depancreatized dog.’’ Lee Tryin Smith, ‘‘I. Addition reactions of unsat- urated ketones. II. Bromination of acetoacetic ester. JIT. Action of alkalis on nitrocyclo- propanes.’’ Charles Phelps Smyth, ‘‘Solid thallium amalgams.’’ Benjamin Leslie Souther, ‘‘I. Hydroxypyridines. II. §-Ketonic nitriles.’’ Philip Francis Weatherill, ‘‘T. Change in volume of potassium chloride upon solution in water. II. Revision of the atomic weight of silicon.’’ Inurnors: Manson James Bradley, ‘‘ Decomposi- tion processes applicable to certain products of eoal carbonization.’’ John Bernis Brown, ‘‘The highly unsaturated fatty acids of fish oils.’? George Hopkins Coleman, ‘‘ Action of nitrogen trichloride on ethyl chloride, benzene, toluene and benzyl chloride.’?’ Max Shaw Dunn, ‘‘Preparation, properties and metabolic behavior of deaminized proteins.’’ Robert Edman Greenfield, ‘‘Chemical reactions in water purification using the hydrogen elec- trode.’’ John Abderdeen Gunton, ‘‘ Reinvesti- gation of the proximate composition of Rhamus frangula.’’ Leonard Francis Yntema, ‘‘ Ultra- violet are spectrum of yttrium.’’ Hopkins: William MHerbert Bahlke, ‘«Vapor pressure of aqueous solutions of lithium chloride at 20° C.’? David Charles Jones, ‘*Ternary critical solution temperatures as eri- teria of liquid purity.’? John Fitch King, ‘“Structure of liquid mixtures from the stand- point of dielectric constant refractive index ’ density.’’ Simon Klosky, ‘‘Silica and impreg- nated silica gels.’’ Isaac Newton Kugelmass, **Rate of solution of colloidal ferric hydrox- SCIENCE 275 ide.’’ William Lloyd Linton, ‘‘Compressibility of liquids and mixed organic liquids.’’? Ben- jamin Simon Neuhausen, ‘‘System ammonia- water as a basis for the theory of the solution of gases in liquids.’’ Hugh Klemme Parker, “*Vapor pressure of aqueous solutions of cane sugar at 20° C.’’ Florence Powdermaker, “*Prematurely senile rats.’? James Edwin Sharp, ‘‘Proposed method for obtaining a con- stant measurable surface of mereury for meas- uring absolute adsorption.’’ Massacuuserts INstirutE or TECHNOLOGY: John Campbell, ‘‘Continuous process for pro- duction of perchlorates from alkali chlorides.’’ William Richard Hainsworth, ‘‘ Effect of high pressures on the hydrogen-calomel galvanic cell.’’ David Burger Joubert, ‘‘ Equation of state for methane.’?’ Max Knobel, ‘‘ Activities of the ions of potassium hydroxide in aqueous solution.’’? Melville Johnston Marshall, ‘‘ Heat of adsorption of gases and vapors on char- coal.’’ Charles Baldwin Sawyer, ‘‘ Nitrogen in steel.’’ MicuicgANn: Frederick Franklin Blicke, ‘‘ Quinoida- tion in the triarylmethyls and in the salt-like derivatives of the triaryl carbinols.’’?’ Dwight Clark Carpenter, ‘‘Anomalous osmose of elec- trolytes with colloidion membranes.’’ Wesley George France, ‘‘Transference numbers of sul- furic acid and the influence of gelatin on trans- ference numbers by the concentration cell method.’’? Roy Kenneth MeAlpine, ‘‘ Atomic weight of antimony.’’ Frederick William Sul- livan, Jr., ‘‘ Diphenyl-g-naphthylmethyl and the color of free radicals.’? Frederick Hawley Currens, ‘Separation of old ytterbium from gadolinite.’’ : Nrpraska: Thos. Jefferson Thompson, ‘‘Substi- tuted succinic acids and reactions of benzyl cyanide. ’’ New York: Ernest Raymond Lilley, ‘‘Some rela- tions between petroleum and coals, and their applieation.’’ Thomas Marshall Smith, ‘‘Hy- drated oxalic acid as an analytical standard.’’ George Watkins Wilson, ‘‘Catalytie oxidation of benzene.’’ Norru Carotina: Troy Monroe Andrews, ‘‘New derivatives of 2, 3, 8-tribromojuglone.’’ Iva Welborn Smithey, ‘‘Bromination of 2-amino-p- cymene.’’ Onto SraTE: Carlton Edgar Curran, ‘‘ Reactions of nitrosophenol and N-chloroquinonimine with aromatic amines.’’ Ora L. Hoover, ‘‘Oxida- tion of acetol.’’?’ Samuel Morris, ‘‘ Potassium 276 dichromate and iodine as ultimate standards in analytical chemistry.’’ Charles Ferdinand Rudmann, ‘‘Oxidation of methane.’’ Lily Bell Sefton, ‘‘Oxidation of acetone and isopropyl aleohol.’’ PENNSYLVANIA: Ernest Carl Wagner, ‘‘ Methyla- tion of p-aminophenol by formaldehyde.’’ PirrspurGH: Harvey Gerald Elledge, ‘‘ Solubility of the calcium and magnesium salts of palmitic, stearie and oleic acids.’’ Frederick Horace arner, ‘‘Carbonization of lubricating oils in internal combustion engines.’’ Princeron: Robert Martin Burns, ‘‘ Adsorption of gases by metallic catalysts.’’ Gregg Dougherty, ‘‘Hydrogenation of benzene.’’ Charles DeWitt Hurd, ‘‘Rearrangements of some new hydroxamie acids related to hetero- eyclic acids and to diphenyl and triphenylacetic acids.’’ Harvey Alexander Neville, ‘‘ Catalysis in the interaction of carbon with steam and with carbon dioxide.’’? Robert Norton Pease, ‘¢ Analysis of molecular volumes from the point of the Lewis-Langmuir theory of molecular theory.’’ of view Rapcurre: Alice Helen Graustein, ‘‘ Action of halogens and of halogen acids on a §-ketonic nitrile. ’’ Sranrorp: Neil Preston Moore, ‘‘Comparative study of fractionating still-heads.’’ Norris Watson Rakestraw, ‘‘Chemical factors in fatigue. I. Effect of muscular exercise upon certain common blood constituents. ’’ Wasurneron: Edwin Blake Payson, ‘‘Thelypo- dium and its immediate allies.’’ Wisconsin: Frederick Lincoln Browne, ‘‘ Thermal chemistry of colloids. II. Heat of coagulation of ferrie oxide hydrosol with electrolytes.’’ Alfred E. Koehler, ‘‘ Protein sulfur.’’ Roland Edward Kremers, ‘‘Azulene and other con- stituents of the volatile oil of milfoil.’’ Henry Baldwin Merrill, ‘‘Separation of certain acidic oxides with selenium oxychloride.’’ Frank Wilson Parker, ‘‘I. Methods of studying the concentration and composition of the soil solu- tion. ITI. Classification of the soil moisture.’’ John Henry Schmidt, ‘‘ Action of arsenic acid and arsenous chloride upon aniline and the preparation of phenarsazine oxide and its de- rivatives.’? Hosmer Ward Stone, ‘‘Prepara- tion of pure selenic acid; determination of indices of refraction of selenic and selenous acids.’’? Alvin Strickler, ‘‘Electric endos- mose.’? William John Trautman, ‘‘ Reduction of certain compounds by means of silicon.’’ SCIENCE [Vot. LV, No. 1420 YALE: Laura Tuttle Cannon, ‘‘Condensation of citral with certain ketones and the synthesis of some new ionones.’’ George Raymond Cow- gill, ‘‘I. Vitamine-B and the secretory fune- tions of glands. II. Relation between vita- mine-B and the nutrition of the dog.’’ Edwin John Fischer, ‘‘Synthesis of -chloroallyl chloride from dichlorhydrin.’’? Zalia Jencks Gailey, ‘‘ Regeneration of blood, with particular emphasis on the iron factor.’’ Frangois Archi- bald Gilfillan, ‘‘ Catalytic study of some dehy- dration and addition reactions of ethyl alco- hol.’? Henry Rudolf Henze, ‘‘ Factors influ- encing condensation of hydantoins with com- pounds containing the carbonyl group.’’ Wil- liam John Horn, ‘‘Mechanism of alkylation in the pyrimidine series.’? Edward Benedict Hunn, ‘‘Utilization of p-dichlorobenzene for syntheses in the diphenice acid series.’’ Burr Kelsey, ‘‘Synthesis of thiohydantoins from _alkyl-substituted | aminoacetanilides.’’ Helen Swift Mitchell, ‘‘Choice between ade- quate and inadequate diets as made by rats and mice.’’ Edith Holloway Nason, ‘‘ Utilization of oil of cassia for the synthesis of cinnamyl aleohol.’’ William Thornton Read, ‘‘ Methods of synthesizing hydantoin compounds possess- ing hypnotic action.’’? Robert Chester Roberts, ‘“Chemical and pharmacological study of some new derivatives of diphenic acid.’’ Erwin Engineering CorNELL: Nee Sun Koo, ‘‘Investigation of the one-hinged steel arch and its comparison with other types.’’ Geography Cuicago: Robert Swanton Platt, ‘‘Resourees and economic interests of the Bermudas.’’ Helen Mabel Strong, ‘‘Geography of Cleveland.’’ New Yorx: Alfred Marius Nielson, ‘‘ Economic geographic conditions influencing seaport de- velopment in the U. 8.’’ YALE: George McCutcheon McBride, ‘‘Land tenure in Latin America.’’ Stanislaus Thomas Novakovsky, ‘‘Climate and weather of the Russian Far East.’’ Geology Bryn Mawr: Helen Morningstar, ‘‘Fauna of the Pottsville formation of Ohio below the Mercer limestones. ’” CauirorniA: Alfred Russell Whitman, ‘‘Re-study of the Cobalt district.’ Cuicaco: George Charlton Matson, ‘‘ Phosphate deposits of Florida.’’ Marcu 17, 1922] CotumBia: Harold Lattimore Alling, ‘‘Mineral- ography of the feldspars.’’ Iowa: Walter Henry Schoewe, ‘‘Origin and his- tory of the extinct Lake Calvin, Iowa.’’ JOHNS Hopkins: Edmund Maute Spieker, ‘‘ Mol- lusean fauna of the Zorritos formation of northern Peru.’’ NEBRASKA: Jerome Benjamin Burnett, ‘‘Geolog- ical study of northeastern Coahuila, Mexico.’’ Ou1o SratTE: Guy Woolard Conrey, ‘‘Geology of Wayne County, Ohio.’’ Wisconsin: William Oscar Blanchard, ‘‘Geo- nomic interpretation of the cuesta of south- western Wisconsin.’’ Clifton Sherwin Corbett, ““Some hydrous aluminium silicates as schist- making minerals.’’ YaLe: Maleolm Havens Bissell, ‘‘ Triassic area of the new Cumberland Quadrangle, Pennsyl- vania.’? Mathematics CaLirornia: Nina May Alderton, ‘‘Involutory quartic transformation in space of four dimen- sions.’’ Paul Harold Daus, ‘‘Normal ternary continued fraction expansions for the cube roots of integers.’’ Daniel Victor Steed, ‘‘Lines on the hypersurface of order 2n-3 in space of n dimensions. ’’ Cuicaco: Mayme Irwin Logsdon, ‘‘ Equivalence and reduction of pairs of hermitian forms.’’ Irwin Roman, ‘‘Transformation of waves through a symmetrical optical instrument.’’ William L. G. Williams, ‘‘Fundamental sys- tems of formal modular seminvariants of the binary cubic.’’ Frank Edwin Wood, ‘‘ Certain relations between the projective theory of sur- faces and the projective theory of congru- ences.’ CoLuMBIA: Jesse Douglas, ‘‘Certain two-point properties of general families of curves: the geometry of variations.’’ Inuinois: Beulah May Armstrong, ‘‘Mathemat- ical induction in group theory.’’ William Ed- mund Edington, ‘‘Abstract group definitions and applications. ’’ Iowa: Eugene Manasseh Berry, ‘‘ Diffuse reflec- tion.’’? © JoHNns Hopkins: Flora Dobler Sutton, ‘‘ Certain chains of theorems in reflective geometry.’’ PRINCETON: Philip Franklin, ‘‘Four color prob- lem.’’ RavDcuLirFE: Rachel Blodgett, ‘‘Determination of the coefficient in interpolation formule and a study of the approximate solution of integral equations. ’’ SCIENCE 277 Sygacuse: Jung Sun, ‘‘Some determinant, the- orems.’’ Yate: Malcolm Cecil Foster, ‘‘Rectilinear gruences referred to special surfaces. ’’ con- Metallurgy CotuMsBia: Sze-Moo Ling, ‘‘Refractory materials from the viewpoint of binary and ternary equilibrium diagrams.’’ GrorGrE WasHINGTON: Raymond W. Woodward, ‘‘Manufacture and properties of steel plates containing zirconium and other elements.’’ Pathology Minnesota: Charles Edward Nixon, ‘‘Sub- stance concerned in the colloidal gold test and the nature of the reaction.’’ Physics CaLiornia: William Harry Bair, ‘‘ Spectra of some compound gases in a vacuum tube.’’ Cuicaco: Ira Garnett Barber, ‘‘ Secondary elec- tron emission from copper surfaces.’’ Otto Koppius, ‘‘Comparison of thermionic and photoelectric work-functions in platinum. ’’ Louallen Frederick Miller, ‘‘Pressure shifts in a calcium are.’’ John Preston Minton, ‘‘Sen- sitivity of normal and defective ears for tones of various frequencies. ’’ CoRNELL: Jacob Roland Collins, ‘‘Influence of certain dissolved substances on the infra-red absorption of water.’’ Guy Everett Grantham, ““Study of some infra-red absorption spectra.’’ Lewis Richard Koller, ‘‘ Factors influencing the resistance of sputtered platinum films.’’ Harvarp: Heetor John Macleod, ‘‘ Variation with frequency of the loss of energy in dielec- tries.’’ Inurors: Charles Steven Fazel, ‘‘Time and pres- sure measurements in the corona.’’ Charles Francis Hill, ‘‘Measurement of mercury vapor pressure by means of the Knudsen pressure gauge.’’ Jouns Hopkins: Gregory Breit, ‘‘Behavior of inductanee coils at frequencies of radiotelegra- phy.’’ Robert Allen Castleman, Jr., ‘‘ Magnetic rotary dispersion in transparent liquids.’’ Louis Bryant Tuckerman, ‘‘Theory of columns of ductile materials.’’ Jan Stephanus van der Lingen, ‘‘Fluorescence of mereury vapor.’?’ Milton Sheldon Van Dusen, ‘‘Thermal conduc- tivity of some heat insulators.’’ Minyesora: John George Frayne, ‘‘Anilateral dynamic characteristics of three electrode ther- mionie amplifiers.’’ Ada Frances Johnson, ‘‘Method of measuring ionie mobilities by ob- 278 servations on the self-repulsion of ions.’’ Joseph Valasek, ‘‘Piezo-electric activity of Rochelle salt under various conditions. ’’ NEBRASKA: Leo Gerard Raub, ‘‘Study of the cathode fall in helium and argon with wire cathodes. ’’ Onto State: Alva Wellington Smith, ‘‘Measure- ment of inductance and capacity by an elec- trometer method. Effect of a superposed con- stant magnetic field upon the alternating cur- rent permeability and energy losses in iron.’’ PENNSYLVANIA: Anton David Udden, ‘‘Tonization potential of selenium.’’ Princeton: Henry DeWolf Smyth, ‘‘ Radiating potentials of nitrogen.’’ Stranrorp: Frank Clark Hoyt, ‘‘Intensities of X-rays of the L-series III. Critical potentials of the platinum and tungsten lines.’’ WIsconsiIn: Grover Rawle Greenslade, ‘‘Spectral distribution of the energy radiated from me- tallic surfaces at high temperatures.’ Yate: John Stuart Foster, ‘‘Relative intensities of the Stark effect components of lines in the spectrum of helium.’’ Elias Klein, ‘‘Spark spectrum of gallium in air and in hydrogen.’’ Irvin Henry Solt, ‘‘Dispersion of a limited wave train.’’ Physiology Brown: Edgar Allen, ‘‘Oestrous cycle in the mouse.’’ James Walter Wilson, ‘‘ Biochemis- try of vitamine-A.’’ Curicaco: Thomas Leon Patterson, ‘‘Gastric con- tractions in amphidia and reptilia.’’ CLarK: Samuel Ernest Pond, ‘‘ Velocity of con- traction-wave in muscle.’ CotumMpr1a: Albert Baird Hastings, ‘‘ Physiology of fatigue; physico-chemical manifestations of fatigue in blood.’’ Ethel W. Wickwire, ‘‘ Re- ciprocal reaction in the cardio-vascular system. ’’ CoRNELL: John Stephens Latta, ‘‘Histogenesis of dense lymphatic tissue of the intestine (Lepus) ; development of lympathic tissue and _ blood- cell formation. ’’ Minnesota: Chester Arthur Stewart, ‘‘ Vital eapacity of lungs of children in health and disease. ’’ Psychology Brown: Sze-Chen Liao, ‘‘Quantitative study of non-intellectual elements. ’’ CaLirorNIA: Dorothy M. H. Yates, ‘‘Study of some high school seniors of exceptional intelli- gence.’’ CuicaGo: Forrest Alva Kingsbury, ‘‘Group intel- ligence seale for primary grades.’’ Helen SCIENCE [Vou. LV, No. 1420 Lois Koch, ‘‘Influence of mechanical guid- ance upon maze learning.’?’ Katherine Eva Ludgate, ‘‘Effect of manual guidance upon maze learning.’’ Margaret Wooster, ‘‘ Certain factors in the formation of new spatial co- ordination. ’’ CLARK: Carroll Cornelius Pratt, ‘‘ Qualitative aspects of bitonal complexes.’’ Matsusaburo Yokoyama, ‘‘ Affective tendency as conditioned by color and form.’’ CoLuMBIA: Florence Edith Carothers, ‘‘Psycho- logical examinations for college freshmen.’? Margaret Evertson Cobb, ‘‘Adenoids and dis- eased tonsils; their effect upon general intelli- gence.’’? Herbert Wesley Rogers, ‘‘Some em- pirical tests in vocational selection. ’’ CorNELL: Anna Kellman Whitchurch, ‘‘ Illusory perception of movement on the skin.’’ HarvarD: Harrison LeRoy Harley, ‘‘ Development of psychological tests for office clerks.’’ Joseph Paul Hettwer, ‘‘Studies on the conditioned reflex.’’? William Moulton Marston, ‘‘Systolic blood pressure and reaction-time symptoms of deception and of constituent mental states.’’ Iowa: Cordia C. Bunch, ‘‘ Measurement of acuity of hearing throughout the tonal range.’’ Glenn Newton Merry, ‘‘ Voice inflection in speech.’’ Hazel Martha Stanton, ‘‘Inheritance of spe- cific musical capacities.’’? Benjamin Franklin Zuehl, ‘‘ Measurement of auditory acuity with the pitch range audiometer.’’ JOHNS Hopkins: Curt Paul Richter, ‘‘ Behavior of the rat.’’” Minnesota: Raymond Otto Filter, ‘‘ Character traits.’? Oscar Julius Johnson, ‘‘St. Paul non-verbal intelligence examination for primary pupils.’’ Calvin Perry Stone, ‘‘ Analysis of the congenital sexual behavior of the male albino rat.’’ PENNSYLVANIA: Karl Greenwood Miller, ‘‘Diag- nostic study of fifty college students.’’ Morris Simon Viteles, ‘‘Job specifications and diag- nostic tests of job competency designed for auditing division of street railway compary.’’ YaLe: Willard Arthur Goodell, ‘‘ Behaviorism and teleology.’? Zoology Bryn Mawr: Hope Hibbard, ‘‘ Cytoplasmic inclu- sions in the eggs of Echinarachnius parma.’’ CALIFORNIA: William Ferguson Hamilton, ‘‘Co- ordination in the starfish.’’ CatHoutic UNiversity: Aloysius Fromm, ‘‘ Vitre- ous body,—its origin, development and struc- ture as observed in the eye of the pig.’’ Marcu 17, 1922] Cuicago: James William Buchanan, ‘‘ Control of head formation in planaria by means of an- estheties.’’? John Wood MacArthur, ‘‘Compar- ative study of susceptibility in planaria and other forms by means of electrolytes and vital dyes. ’’ CoLtumMBIA: Robert Hall Bowen, ‘‘Insect sperma- togensis. History of cytoplasmic components of the sperm in Hemiptera.’ CorNELL: Hazel Elisabeth Branch, ‘‘ Internal anatomy of Trichoptera.’’ John D. Detwiler, ‘“Biology of three little known clover insects.’’ Dean LL. Gamble, ‘‘Morphology of ribs and transverse processes in Necturus maculatus.’’ Harry Hazelton Knight, ‘‘Insects affecting the fruit of the apple with particular reference to the characteristics of the resulting scars.’’ Rowland Willis Leiby, ‘‘Polyembryonic devel- opment of Copidosoma gelechie with notes on its biology.’’ Mortimer Demarest Leonard, “Revision of the dipterous family Rhagionida (leptide) in the United States and Canada.’’ John Thomas Lloyd, ‘‘ Biology of North Amer- ican caddis worms.’’ Helen Elizabeth Murphy, ‘“Metamorphosis of may-fly (Ephemerine) mouth-parts.’’ HarvarpD: Samuel Wood Chase, ‘‘Mesonephros and urogenital ducts of Necturus maculosus rafinesque.’’ William Harder Cole, ‘‘Trans- plantation of skin in frog tadpoles.’? Emmett Reid Dunn, ‘‘Salamanders of the family Plethodontide.’’ Cleveland Sylvester Simkins, ‘*Origin and migration of so-called primordial germ cells in the mouse and rat.’’ George Carlos Wheeler, ‘‘Larve of subfamilies Doli- choderine and Formicine ; developmental stages of ants.’’ ( : Inuinois: Florence Sander Hague, ‘‘Studies on Sparganophilus Eiseni Smith.’’ Ada Roberta Hall, ‘‘Effects of oxygen and carbon dioxide on the development of certain cold blooded ver- tebrates.’’? Ezra Clarence ‘Harrah, ‘‘ North American Monostomes.’’ Lewis Bradford Rip- ley, ‘‘Morphology and postembryology of Noctuid larve.’’? Fenner Satterthwaite Stick- ney,’’ ‘‘Head capsule of Coleoptera.’’ JouNns Hopxins: John Graham Edwards, ‘‘ Effect of chemicals on locomotion in ameba.’’ Al- phonse M. Schwitalla, ‘‘Influence of tempera- ture on the rate of locomotion in ameba.’’ Micuigan: Horace Burrington Baker, ‘‘ Distribu- tion of mussels in Douglas Lake.’’ Minnesota: George Henshaw Childs, ‘‘ Digestive system of diplopods with special reference to SCIENCE 279 parajulus.’? Samuel Alexander Graham, ‘‘In- fluence of physical factors of the environment on the ecology of certain insects in logs.’’ Ouro Stare: Carl John Drake, ‘‘Heological and life-history studies of Heteroptera.’’ PRINCETON: Orren Williams Hyman, ‘‘ Dimorph- ism of the spermatozoa of Fasciolaria Tulipa.’’ Rapciirre: Esther Wadsworth Hall, ‘‘Braconids parasitic on aphids and their life history.’’ StanrorD: K. Kunhi Kannan, ‘‘Function of the prothoracic plate in Mylabrid (Bruchid) larve.’’ Wisconsin: Sarah Van Hoosen Jones ‘‘Inher- itance in pigeons; checks and bars and other modifications of black.’’ YALE: John Spangler Nicholas, ‘‘Regulation of posture in the forelimb of Amblystoma punc- tatum.’’ Leon Stansfield Stone, ‘‘ Development of the cranial ganglia and the lateral line sense organs in Amblystoma punctatum.’’ CauLir Hubu CLARENCE J. WEST ResEARCH INFORMATION SERVICE, NationaL RESEARCH CoUNCIL, DECEMBER 7, 1921 THE ORGANIZATION KNOWLEDGE Il The aim of all organized knowledge is to in- crease the certainty of prediction, or as a practical question the science of forecasting, the urgency of which was never more apparent than it is to-day. As has been said by Jevons, “With the progress of any branch of science the element of chance becomes much reduced,” for “Not only are laws discovered which en- able results to be predicted but the systematic examination of phenomena and sub- stances leads to important and novel discoveries which can in no sense be said to be accidental.” The application of this principle to the science of human relations is obvious, yet rarely recog- nized with the required degree of clearness. A vast amount of human activity continues to be carried on, crude as it may be, in dis- regard of past experience but of necessity as an adventure or speculation, the evil results of which are most likely to fall upon others than those directly concerned. It is not only OF 280 true that “hopeless causes do not always fail” (in the temporary human sense), but that wrongful causes or courses may prove profit- able—for a time—and to those directly con- cerned. It requires to be clearly kept in mind in considering civilization as a science of hu- man relations that in this respect the interests of the individual and society may be diametri- cally opposed to each other. But just as the police powers control criminal propensities, so the powers of organized knowledge and of demonstrated experience hold in check the reck- less intellectual speculations of the audacious but uninformed. In its final analysis the only eure of a fallacy is a demonstrated fact so clearly stated and properly applied that the truth must prevail and prove triumphant. This conclusion is summed up by President David Starr Jordan in the remark that “The final test of truth is its livableness, the degree to which we trust our lives to it.” However much falsehood may prevail and prove an in- dividual advantage—for a time—in the long run it is only “by means of experience, person- al and collective, that the human race main- tains itself on earth.” Such _ experience, also in the words of Jordan, “concerns itself chiefly with the relations of objects rather than with their ultimate constitution or their intimate nature,” for “it gives the truth actu- ally needed in actual life and it furnishes the means for the acquisition of more complete conceptions whenever in the intricacies of life such better knowledge is needed.” The principle here laid down is fundamental to a science of human relations. When the demand arises for practical knowledge, for safe guidance in affairs of business or state, the first essential need is a basis of agreed upon facts, only too often wanting in the case of those who essay upon leadership in the troubled waters of political, economic, or social controversy. It is likewise with every question, great or small, upon which mankind stands in need of better knowledge to eliminate the prevailing error and misapplication of human effort. Only by organizing knowledge in the manner here suggested will it be possible to seeure the SCIENCE [Vou. LV, No. 1420 future against the vast amount of erroneous conclusions which now hamper progress in practically every important direction in which further progress is most essential for the good of all mankind. No elaborate philosophical treatise on the “Foundations of Knowledge” or the “Human Intellect” meets this need. If typhus is at our door or sleeping sickness no vague advice on preventive measures, however well meaning, meets our needs of the situa- tion or the expectations of the public. No philosophical platitude, no pious phrases of politics held the Indian in his struggle to sur- vive in competition with an unlike civiliza- tion in some respects inferior to the moral and physical standards of primitive life. In very truth it is much easier to evolve speculative theories about knowledge than to ascertain the truth or the facts concerning even the most commonplace matters of every- day existence. Herein lies the conflict between mathematics and statistics and the menace of over-emphasis of the mathematical judgment in matters which are largely questions of facts and not of philosophical inference. Because mathematics are useful—if not indispensable— in astronomy or engineering it does not at all follow that mathematical speculations can safe- ly be applied to problems in biology or vital and social statistics. The practical truths of every-day life are relative and not absolute, all more or less conditioned by the human judg- ment, totally at variance with the ascertain- ment of the truth of physics or chemistry. The mode of reasoning most useful in sociology or political science is essentially different from the intellectual concept of accuracy in the trans- mission of sound waves or the transformation of energy applied to a steam engine or a tur- bine. Hence I am at a loss to understand the conelusion of Jevons that “As science pro- gresses, its power of foresight rapidly increases until the mathematician in his study seems to acquire the power of anticipating matters and predicting what will happen in stated cireum- stances before the eye of man has ever wit- nessed the event.” No mathematician gave a forecast of the coming of the great influenza epidemic of 1918-19, no weather Marcu 17, 1922] forecast of a coming storm depends upon mathematics, no fall in prices or rise in wages needs the aid of the mathematician to prognos- tieate events depending largely on unforesee- able contingencies, and finally, no mathema- tician could have or did forecast the great war and its duration and consequential loss of life and property. But knowledge properly or- ganized would aid enormously in developing the prophetic judgment free from bias or the influence of custom or tradition. Such organi- zation should be the first instead of the last, the most important instead of the most ne- glected duty of the state. Without it the pres- ent chaos and confusion must continue, while the consequences must become more disastrous. Properly organized knowledge on the multitude of matters that concern the state and society would within a single generation do more to advance the cause.of true civilization of science and human progress than any other discovery within the realms of possibility. Nothing that I have said should be con- strued as opposed to original thought, to the fullest uses of the imagination, lead the con- clusions where they may. Such speculations concern the individual and represent opinions which may or may not be accepted as a guide to action in the affairs of every-day life. I am concerned with judgments of a public or universal nature brought forward as a con- tribution to truth, based upon the ascertained and digested facts of human experience. I agree entirely with Professor Dearborn that it is wrong “to be forever putting facts into the mind while never providing time to use them in thought,” and I also agree with his view that “rules for thinking are wholly unneces- sary,” just as I am convinced of the non-utility of a knowledge of technical grammar in the art of writing. But what belongs to the realm of the imagination is a thing apart in the life of a man who is conscious of his intellectual re- sponsibility in matters of fact and particularly when the facts represent collective experience or conclusions drawn from assembled aggre- gates usually in the nature of statistical data. No man has a right or a privilege to say that he knows what to him is only a matter of be- SCIENCE 281 lief. On all questions of public policy, where far-reaching consequences are involved in pres- ent-day action, it is the first duty of the states- man to make sure of his facts, to clearly differ- entiate facts from opinion, and to act with absolute impartiality upon the evidence. Comptes Rendus, 173: 478, 1921. SCIENCE [Vou. LV, No. 1422 universal reactions can only do so by shutting his eyes to the real nature of the phenomena. It is, in fact, necessary to look in two directions at once; to be equally alert to detect general laws or principles, and to perceive special eases, which in a real and significant sense are unique. Not only do the insects thus illustrate the wonders of life, but they afford us excellent material for evolutionary studies, whereby we may eventually understand in some measure how the most complex structures and reactions arose. They do this because the species are so excessively numerous, and there is every reason to suppose that much of their evolution has been lateral; that is, by the development of segregates without the disappearance of the original stock. Thus it may well happen that a sufficiently extensive collection will show a series of forms, along with their prototypes, the latter still existing under the original con- ditions. Recent studies have revealed the exist- ence ot many slightly divergent races or species, more or less different in their adaptations and reactions, exposing the very mechanism of evolution to our view. These phenomena, read in the light of the remarkable genetic studies on Drosophila and other insects, begin to acquire extraordinary significance and interest. It must further be said, that if we are to take full advantage of the wealth of biological op- portunity afforded by the insects, we must turn to the tropics, where the number and diversity of species is at a maximum. In the tropics essentially similar climatic conditions have per- sisted for ages, permitting the development of biocoenoses which may be compared with old and highly diversified civilizations. But the detection and analysis of these requires resident study or permanent stations, as the English naturalist, A. R. Wallace, long ago insisted. Expeditions, traveling rapidly over the coun- try, appear more adventurous or romantic, and often return with very large collections; but any one who has oceasion to study the speci- mens so collected, must keenly realize the lack of biological information. For all these reasons, the Tropical Research Station in British Guiana, established by Mr. Marcu 31, 1922] William Beebe, is certain to become classical ground. Not only is the station most favor- ably situated for research, but it is securing the interest and cooperation of some of the most brilliant American naturalists. Although much work has already been done, it rep- resents no more than a minute inroad on the resources of the locality. But whatever may be accomplished hereafter, it will not often hap- pen that any more interesting story will be written than that by Dr. W. M. Wheeler on the insects associated with the plant Tachigalia. This genus of leguminous trees has long been known to harbor ants within the enlarged and hollowed petioles. The very name of the genus was derived by Aublet (1775) from the native name indicating this association. Dr. Wheeler, in the short time at his disposal, was able to detect no less than 50 species of organisms associated primarily with the leaves or terminal shoots of the plant, or secondarily with the organisms thus associated. Twenty-eight of these were ants, half of them representing new species, subspecies or varieties. The others in- cluded various kinds of insects, seven of which proved to be undescribed, and have been dis- cussed in short supplementary articles by a number of specialists. The regular or normal inhabitants of the petioles are certain ants, beetles and coccids. The ants comprise two species of Pseudomyrma and two of Azteca. The coceids are all of one species, identified as Pseudococcus bromelie (Bouché)!. The beetles have been described by Messrs. Schwarz and Barter, of the U. S. National Museum, and are found to represent two species of Silvanide, one of them so remarkable as to be placed in a new genus. The discussion centers around these beetles, which prove to have very singular habits. Both adults and larvee feed on the parenchyma of the Tachigalia 1 Bouché’s description, quoted by Signoret, is partly inaccurate, and may not refer to a Pseudo- coccus at all. The current identification of the species is traditional, and probably cannot be justified or confirmed. The ‘‘P. bromelie’’ found on pineapples in Florida (Quarterly Bull. State Plant Board of Florida, October, 1917, p. 47) is almost certainly P. brevipes (Ckll.), and cannot be Bouché’s species. SCIENCE 301 petioles, but they also solicit and drink the sugary excrement of the coccids. When a beetle finds a coccid, it proceeds to apply its antenne to the rounded surface of the mealy-bug’s back, like “an expert pianist moving his hands from side to side over the key-board, or a masseur with his hands in soft gloves, massaging a patient.” The beetle may spend as much as forty or more minutes in this operation. If the coccid is in the proper condition, it dis- charges a drop of liquid, which the beetle at once greedily swallows. The beetles do not seem to be able to judge whether the coecid is capable of responding, and will work for long periods without getting any results. Not only do the adult beetles behave in this manner, but the larve also solicit food from the coccids. Dr. Wheeler not only describes the interrela- tionships of the various insects in considerable detail, but gives a most interesting discussion of the general problems of instinet and habit involved; a discussion which has the advantage of being based on a minute knowledge of actual facts, rather than general presumptions as to what ought to be true. This discussion ends with a speculative passage which can not fail to attract the reader’s attention. “Fouillée believes that every appetition in- volves a rudimentary cognition and that auto- matic behavior like that of the habits and re- flexes is merely lapsed appetition. If it could be shown that the latter really can have this derivation and that such ontogenetic mechan- isms as habits can acquire representation in the germ-plasm and hereditary transmission, we might be in a position to give a consistent ac- count of all animal behavior, and one which would lead us to regard the reflexes and the tropisms as ultimate, highly specialized end- stages instead of primitive, elemental com- ponents of behavior” (p. 118). Charles O. Farquharson was trained in the University of Aberdeen, and went out to Nigeria as government mycologist. Through Dr. W. A. Lamborn, entomologist at the same station, he became interested in insects, and both men were greatly stimulated by Professor E. B. Poulton of Oxford, with whom they constantly cor- responded. Owing to conditions arising out of the war, Farquharson was obliged to spend 302 much of his time in doing routine work un- connected with sciences, but he managed to make a great number of interesting observa- tions, which he hastened to communicate to Professor Poulton in letters, along with speci- mens of most of the species referred to. He hoped, on returning home, to work up his re- sults and publish his more important discover- ies, but he lost his life through a collision at sea within a few hours of Liverpool. Pro- fessor Poulton has edited his letters, adding a brief memoir and numerous notes, together with a series of contributions, from specialists, describing many of the new or interesting species found. The paper is so long, and its contents are so varied, that it is impossible to give an adequate summary. The principal section, however, refers to the transformations and habits of a number of species of Lycaenidae, and brings out a number of new and curious facts. It is a strange coincidence, that almost simultaneously with Dr. Wheeler’s publication of the observation of beetles obtaining liquid nourishment from coccide in South America, Farquharson’s account of similar habits in Lycenid butterflies in Africa appears. The butterfly concerned is Teratoneura isabelle, a long account being given, showing that the attending ants are driven away, apparently by flapping the wings. Professor Poulton suggests that an offensive odor is also pro- duced. Later, two other related butterflies, of distinet genera, were found to have the same habits. Unfortunately the coccids were not preserved, and we can only conjecture that they were some species of Pseudococcus. Both of the works reviewed were capable of being completed only by the cooperation of rather numerous specialists, entomologists and botanists. It becomes increasingly evident that much of the best work in bionomics must necessarily be cooperative, no single individual, however learned, being capable of dealing with all of the species and problems involved. It is pleasant to find, in the papers before us, that the desired assistance was freely given and is completely acknowledged. Only in this spirit is it possible for men to work harmo- niously together, and any who fail to conform SCIENCE [Vou. LV, No. 1422 to proper standards should be made to feel the disapproval of their colleagues. T. D. A. CockERELL UNIVERSITY OF COLORADO, SPECIAL ARTICLES SEALING TUNGSTEN INTO PYREX THE author has spent considerable time in evolving a good method of sealing tungsten wire into Pyrex and fastening the copper lead- wires to the tungsten. The method here des- cribed is easily accomplished and the freedom from breakage is certain. It is hoped that the present detailed description may save others sufficient time to justify its publication. An elementary knowledge of glass-blowing is assumed. The sealing-in glasses and the order of join- ing are: tungsten—G705H—G702P—Pyrex. The numbers are used by the Corning Glass Company to designate these glasses. Some glass-blowers prefer to omit G705H and seal the tungsten directly to G702P. The G705H is of lower melting point, may be used in the gas-air flame and hence offers less chance to oxidize the tungsten. Clean the wire by sandpaper only or warm in the flame, dip in a saturated aqueous solu- tion of sodium or potassium nitrite (or nitrate) and then polish with very fine sandpaper or even the thumb nail. Draw small tubes of each of the three kinds of glass having an in- ternal diameter slightly larger than the dia- meter of the wire. Cut a short length from each and string them on the wire in the order (above) in which they are to be sealed. The flame should be applied first to the middle of the G705H bead and the others in turn be brought along the wire and melted to the pre- ceding one. The wire with its glass coating, Fig. 1-a, may then be sealed in in the usual manner but joining Pyrex to Pyrex. In case the tungsten wire is small and it is desired to protect it from the flame the Pyrex enclosing tube may be extended through the final seal, Fig. 1-b, and the excess glass broken off after the seal is accomplished. Marcu 31, 1922] G705H G7ZP Pyrex Fig. fl, GV0LP Pyrex a Ce eaueere hot Fug. a A seal using only G702P and Pyrex may be made as indicated in Fig. 2. Join tube of’ G702P to Pyrex and draw down as indicated. The wire coated with a small bead of G702P (or even the bare clean wire) may be placed in position, Fig. 2-a, and the seal made by squeezing with tweezers when hot. Squeeze as soon as possible to prevent oxidation. This seal may also be made by squeezing a bead of G702P in a Pyrex tube but with less freedom from breakage. To join copper to tungsten: (a) electroplate tip of tungsten wire with copper or nickel and solder (silver solder for higher temperatures). (b) melt nickel wire to tungsten in oxygen flame using borax as flux or even no flux. Nick- el becomes very brittle and it is best to then solder to the nickel bead thus obtained. (c) form are of 10 to 20 amps. between tungsten and nickel wires to coat tungsten with nickel; solder. SCIENCE 303 (d) German silver (for this use of it I am indebted to Mr. Cummings of the Depart- ment of Chemistry of this University) flows much better than nickel. Use method (b) with borax as flux. Copper wire may be joined at once in flame just as in joining copper to platinum. The method used will generally depend upon facilities available. L. T. Jones DEPARTMENT OF PHYSICs, UNIVERSITY OF CALIFORNIA A NEW SCLEROTINIA ON MULBERRY A DISEASE of mulberry characterized by en- larged portions of the fruit has been noted by Orton' and more recently by Taubenhaus.? The authors have found a species of Sclero- tinia to be the cause of this disease and will deseribe it as follows in the Journal of Agri- cultural Research: Sclerotinia carunculoides n. sp. Apothecia one to several from a single scle- rotium, dise cupulate to sub-cupulate; 4 to 12 mm. in diameter; inside snuff-brown,? outside Prout’s brown; stalk cylindrical, flexuous, smooth, attenuated downward, 15 to 42 mm. in length, reaching a diameter of 1.5 mm., color Prout’s brown; asci cylindrical to eylindro- clavate, 104 to 123 x 6.4 to 8 v., average 117 x 7», 8-spored; ascospores uni-seriate, reniform, hyaline, 6.4 to 9.6 x 2.4 to 4 n, average 7.6 x 3.1 », with 2 bodies on the concave surface ; namely, a body more or less rhombie in shape as seen from above, 2 x 4 up, and adjoining it, a more or less hemispherical body 3 p. in its longest diameter; paraphyses filiform to eylin- dro-clavate, simple or branched, septate or non- septate, 94 to 128 x 1.8 to 2 u; microconidia hyaline, sub-globose, 2 to 4 x 2 to 3.2 p, aver- age 2.8 x 2.5 uw; selerotia black, fairly regular, sub-spherieal with depressed surfaces. 1 Kxperiment Station Record, Vol. XIV, No. 6, pp. 351-352, 1908. 2 Nature Study Review, Vol. 17, No. 7, pp. 282- 285, 1921. Illus. 3 Ridgway, Robert, Color standards and color nomenclature, 43 p., 53 col. pl., Washington, D. C., 1912. 354 SCIENCE [Vou. LV, No. 1422 On fruits of cultivated Morus alba. Type Invariant points in function space: G. D. BirK- material collected at Seranton, 8. C., U. 8. A., March, 1921. Specimens have been deposited in the Office of Pathological Collections, Bureau of Plant Industry, U. 8. Department of Agri- culture, Washington, D. C. The manuscript giving a more complete account of this organism went to press Novem- ber 26, 1921, but since congressional action has suspended the publication of the Journal, it is deemed advisable to publish this prelim- inary account at this time in order that plant pathologists interested in this disease may be on the watch for the apothecial stage at blos- soming time. 2 EK. A. SIEGLER, A. E. JENKINS Bureau or Puant INpDusTRY, WASHINGTON, D. C. FEBRUARY 1, 1922 THE AMERICAN MATHEMATICAL SOCIENG THE two hundred and twenty-first regular meeting of the American Mathematical Society was held at Columbia University, New York City, on February 25, 1922. The attendance included seventy-five members of the society. The election of thirty-five new members was announced. The seeretary announced the gift, by an anonymous donor, of the sum of $4,000 to pay for an additional volume of the Transactions, to be printed in 1922. The society adopted a resolution thanking the donor for this very generous gift. Professor C. N. Haskins, of Dartmouth Col- lege, was selected to succeed Professor L. E. Dickson, of the University of Chicago, as one of the three representatives of the society in the Division of Physical Sciences of the Na- tional Research Council. The afternoon session was especially marked by the presentation of a paper by Professor J. L. Coolidge, by request of the program com- mittee, on The basis of mathematical prob- ability. A number of members of the Actu- arial Society attended, by invitation, to hear this paper. The following papers were read: Horr and O. D. KELLOGG. A property of certain functions whose Sturmian developments do not terminate: O. D. KELLOGG. The boundary problems and developments asso- ciated with a system of ordinary linear differ- ential equations of the first order: G. D. Birx- HOFF and R, E. LANGER. Developments associated with a boundary prob- lem not linear in the parameter: R. KE. LANGER. Ricci’s principal directions for a Riemann space and the Einstein theory: L. P. EISENHART. Normal congruences and quadruply infinite fami- lies of curves: J. DOUGLAS. Qualitative properties of the ballistic trajectory. Second paper: T. H. GRoNWALL. The reflection of X-rays in a finite number of equidistant parallel planes: T. H. GRONWALL. The basis of mathematical probability: J. L. COOLIDGE. On the ‘‘ Alabama paradoxz’’ in the problem of apportionment of representatives: E. V. Hunt- INGTON. On the d’Hondt method of apportionment, and its counterpart: BE. V. HUNTINGTON. Theorems on sequences of sets of points: G. A. PFEIFFER. The Fredholm theory of Stieltjes integral equa- tions: C. A. FISCHER. A closed set of normal orthogonal functions: J. L. Wash. Kinematics in a complex plane and some geometric applications: A. EMcH. On functions with integrals of elementary char- acter: J. F. Rrrt. Geometrical properties of the system of all the curves of constant pressure in a field of force: E. M. Morenvus. Spherical representation of conjugate systems and asymptotic lines: W. C. GRAUSTEIN. The distribution of current in a long cylindrical conductor: C. MANNEBACK. Operational solution of equations of nth degree: A. PRESS. Maximal cuspidal curves: T. R. HOLucRort. Method for the separation into partial fractions of powers of trigonometric functions: I. J. ScHWATT. The expansion of the continued product, Te +k): I. J. Scowart. Kiel R. G. D. RigHarpson, Secretary NEw SERIES Vou. LV, No. 1423 FRripay, APRIL 7, 1922 ? ? SINGLE Copiss, 15 Cts. Books for Veterinarians SISSON— Anatomy of Domestic Animals. By Serpti- mus Sisson, S. B., V.S,, Professor of Com- parative Anatomy in Ohio State University. Octavo of 930 pages, with 725 illustrations, many in colors. Second Edition. Cloth, $rz.00 net. BUCHANAN AND MURRAY— Veterinary Bacteriology: a Treatise on the Bacteria, Yeasts, Molds, and Protozoa Path- ogenic for Domestic Animals. By Ros- ERT EX. BucHANAN, Ph.D., Professor of Bacteriology; and CHartes Murray, B. Sc., D. V. M., Associate Professor of Veteri- nary Bacteriology, Iowa State College of Agriculture and Mechanic Arts. Octavo of 600 pages, illustrated. Second Edition. Cloth, $4.00 net. HADLEY— Veterinary Science. By Freprrick B. Hap- Ley, D. V. M., Professor of Veterinary Sci- ence, University of Wisconsin. 1I2mo of 420 pages, illustrated. Cloth, $3.00 net. HADLEY— The Horse in Health and Disease. By FrepericK B. Hapvtey, D. V. M,, Professor of Veterinary Science, University of Wis- consin. «I2mo of 261 pages, illustrated. Cloth, $1.50 net. HEINEMAN— Milk. By Paur G. Heineman, M. D., Wis- consin. Octavo of 684 pages, illustrated. Cloth, $7.00 net. KAUPP— Anatomy of the Domestic Fowl. By B. F. Kaupr, M. S., D. V. M., Poultry Investi- gator and Pathologist, North Carolina Ex- periment Station. 12mo of 373 pages, illus- trated. Cloth, $3.50 net. KAUPP— Poultry Culture, Sanitation, and Hygiene. By B. F. Kaupp, M. S., D. V, M,, Poultry Investigator and Pathologist, North Caro- lina Experiment Station. 1I2mo of 573 pages, with 200 illustrations. Second Edi- tion. Cloth, $3.00 net. SHARP— Ophthalmology for Veterinarians. By Wat- ter N. Suarp, M. D., Professor of Ophthal- mology in the Indiana Veterinary College. t2mo of 210 pages, illustrated. Cloth, $2.00 net. LYNCH— Diseases of the Swine. By CwHaries L. Lywnceu, M. D., D. V. S. Chapter on Castra- tion and Spaying by Grorce R. Wutte, M. D., D. V. S. Octavo of 741 pages, illus- trated. Cloth, $5.00 net. DIETRICH-— Livestock on the Farin. By Wititi1Am D1et- rich, B. S. A., M. S,, Head of the Depart- ment of Animal and Dairy Husbandry, Uni- versity of Minnesota, Crookston Branch. 12mo of 269 pages, illustrated. Cloth, $1.75 net. W. 3. SAUNDERS COMPANY, West Washington 5Sq., Phila. *PLEASE SEND ME. THE BOOKS CHECKED (\/) AND CHARGE TO MY ACCOUNT :— Sisson’s Anatomy of Domestic Animals_---_-_- $12.00 net 4. Hadley’s Horse in Health and Disease Heineman on Milk Kaupp’s Anatomy of the Domestic Fowl_-------$3.50 net Kaupp’s Poultry Culture 8 Sharp’s Ophthalmology for Veterinarians_ Lynch’s Diseases of the Swine. Dietrich’s Livestock on the Farm PNUD YOY 5B SS i a ANNUAL SUBSCRIPTION, $6.00 il SCIENCE—ADVERTISEMENTS New Texts CUMMER——-A Manual of Clinical Laboratory Metheds New N this, the newest book on the subject, clinical laboratory methods are presented in concise and accessible form. While devoted largely to description of methods, thorough attention is given to the underlying principles, the indications for performing tests and the significance of the results. In most chapters the plan is as follows. (1) Outline of routine examinations; (2) description of the simple qualitative methods which are frequently employed; (3) descrip- tion of quantitative methods or those of intricate technic ; (4) discussion of findings in vari- ous morbid conditions. When several methods are given, usually the preferred one is indi- cated. The method of counting blood cells has been given meticulously, and special atten- tion has been given to the histology and pathology of the blood. Chemical examination of the blood and urine and the relations of urine examinations to life insurance are also treated very fully. The section on Serum Reactions is, in effect a monograph on the Widal, Wasser- mann and related tests. The liberal use of cross references in the body of the text and the synoptic résumés of quantitative procedures in the chapters on Blood and Urine greatly facili- tate the use of the book in the clinical laboratory. Chapter Headings: Examination of the Blood—Examination of Urine—Examination of Gastric and Duodenal Contents—Examination of the Feces—Examination of Sputum—Ex- amination of Body Exudates, Fluids and Miscellaneous Methods—Bacteriological Methods— Appendix (Equipment, Stains, Vaccines—examination of a large number of specimens, etc.). By CLYDE LOTTRIDGE CUMMER, Ph.B., M.D., Associate Professor of Clinical Pathology, Western Reserve University ; Associate Clinical Pathologist, Lakeside Hospital; Director of Medicine, St. John’s Hospital; Director of Laboratories, St. Alexis Hospital, etc., Cleveland. Octavo, 484 pages with 136 engravings and 8 plates. Cloth, $5.50, net. MANSFIELD on BOTANY—Developmental and Descriptive New NEW TEXT by a distinguished authority which, because it deals with the two most in- teresting phases of botany, will achieve the very desirable effect of securing the stu- dent’s earnest attention. The text is complete and with a logical arrangement that will ap- peal to all teachers of the subject and is largely illustrated with photographs from Nature. By WILLIAM MANSFIELD, A.M., Phar.D.. Dean and Professor of Botany and Pharmacognosy, Union University, Albany College of Pharmacy, Albany, New York. 12mo, 232 pages, with 135 illustrations. Cloth, $2.50, net. KENDALL—Bacteriology, General, Pathological and Intestinal .,, 42 NE of the achievements of the Great War is a noteworthy advance in the Science of Bacteriology. This is manifested not only in marked improvements in methods of in- vestigation and in modifications of preéxisting views in the important fields of Infection and Prevention of many diseases, but also in a complete revision of some of the more important groups of bacteria. Prominent among these is the great class of anaérobic bacilli. During the war period, furthermore, much additional information has accumulated pertinent to dis- eases which have hitherto been elusive. These developments have necessitated the rewriting of entire sections of this book, and extensive changes and additions to nearly every chapter. Indeed, including the anaérobes and the work on spiral organisms, this new edition contains as much as any volume in existence of the worth-while war and post-war work. The text aa that characteristic which contributed so largely to the success of its first edition, namely, dynamic interpretation of the subject. The author emphasizes throughout what bacteria do rather than zwhat they are—how they get into the tissues—what they feed on—what they excrete—how they multiply—how they escape from the body—the chemistry of bacterial activity. New methods of handling bacteria, methods which are improvements over earlier ones, details of laboratory equipment, the minutize of technic and the use and value of apparatus are carefully consdered. Much space is given to the discussion of the applications of bac- teriology in Etiology and Preventive Medicine, as well as Serology and Vaccine therapy. By ARTHUR I. KENDALL, Ph.D., Dr. P.H., Professor of Bacteriology, Northwestern University Medical School, Chicago. Octavo, 680 pages, with 99 engravings and 8 plates. Cloth, $6.00, net. 706-8-10 Sansom St., L EA & F EBIGER PHILADELPHIA Send me books checked (X): [_] Cummer, $5.50; im Mansfeld, $2.50; [_] Kendall, $6.00 ST. GNI Dp ce earch a te reece Sc, 4-22 SCIENCE A Weekly Journal devoted to the Advancement of Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS 11 Liberty St., Utica, N. Y. Garrison, N. Y, New York City: Grand Central Terminal Single Copies, 15 Cts. Annual Subscription, $6.00 Entered as second-class matter January 21, 1922, at the Post Office at Utica, N. Y.. under the Act of March 3, 1879. Vou. LV Aprit 7, 1922 No. 1423 The Early Training of Scientists: Pro- FESSOR JOEL H. HILDEBRAND...........--.--.--------- 355 Are Iodides Food: Prorrssor J. F. CLENDON 358 Geography as a Profession: Dr. H. P. Lirrur 362 Vienna: Prorressor C.-E. A. WINSLOW...........- 363 Scientific Events: Mexican Archeology; The Royal Agricul- tural Society of England; Molding Sands ; The British Industrial Fatigue Research Board; Medical Fellowships of the Na- tional Research Council; International Chemical Conference at Utrecht......-.........-.-. 365 aU SCLETULUTIC NOLES) ANUG NIC WSs cones tenet eset ese nseare 370 University and Educational Notes.........-....-.-..- 372 Discussion and Correspondence: Genetical Analysis and the Theory of Nat- ural Selection: Dr. W. Barrson. A Sug- gestion to Mr. Bryan: Dr. Epwarp M. KInDite. The Writing of Popular Science: IDR, ING, 18g IDOI re ere ers coreobercecrcenetnactre 373 Quotations: The Earning Power of Research...............---- 376 : Scientific Books: Clark’s Monograph of the Existing Crin- Otd sR) We LRG MHIS HER seer eee 376 Special Articles : A New Variety of Barley with Striking Characteristics: Dr. Kwrn 8S. HoE..........-.- 378 The Annual Meeting of the Federation of American Societies for Experimental Biol- ogy: PROFESSOR CHARLES W. GREENE.......... 379 THE EARLY TRAINING OF SCIENTISTS Iv is a strange feature of the modern educa- tional process that though children are born richly endowed with scientific instincts into a world which has gladly accepted a multitude of gifts from science, they encounter, from the cradle to the university, constant opposition to the education of. these instincts. The child is excellent raw-material for the making of the scientist. First of all, he is curiosity inearnate; he does not confine his attentions to those matters which adults con- sider practical, but tries to learn all he can about an environment which he finds brimming with interest. Moreover, he is an experimen- talist, and the days are too short for the ex- periments he wishes to perform upon every- thing at hand, from the bric-a-bric to the patience of his elders. He relies upon ex- periment rather than upon authority for learn- ing truth. Authoritative representations con- cerning the fragile qualities of glass, the taste of pepper or the temperature of a stove are to him but suggestions for experiments. Although his experimental technique is simple and his capacity for reasoning and theorizing are un- developed, he has made a splendid beginning towards a scientific career. In~ his further development, however, he meets with opposition at every turn. Many of his experiments earn punishment from his parents, who discourage his curiosity and even pervert the truth for their own ends. At school, book-learning is substituted for observa- tion and experiment, and even when the topic is nature or science it is often taught in a very didactic way by a teacher who, though having taken many courses in pedagogy, may have but little appreciation of the spirit and method of science. At Sunday school he is likely to find a teacher who praises as religious virtue the 306 docile acceptance of dogmatic authority and to whom the term “doubt” is one of opprobium. The repressive process, alas, does not end here, for we in the university who next take him in hand delight in giving him the impres- sion that the subject has been thoroughly elu- cidated. We take little pains to help him to realize the existence of vast fields awaiting exploration. Moreover, we are so anxious to guard him from errors of fact that we announce in advance what he is expected to find in his experiments. He is told to mix solution A with solution B and “to note the red precipitate which is formed.” The precipitate he gets may happen to be yellow, but he has learned by this time that it is safer to call it red in his note-book. Why quarrel with the instructor, it is wiser to give the answer he wants and keep him in a good humor. I am convinced of the justice of the fore- going diatribe, as I have had an intimate acquaintance with the problem, not only as a child, a student and a parent, but, I must con- fess also, as a teacher. Indeed, so thoroughly convineed have we been in the department of chemistry of the University of California of the importance of giving the student, so far as we can, a real training in the scientific method and spirit, that we have taken great liberties with that most conservative of all university courses, the freshman course in general chem- istry. So many have asked for information concerning our methods that I am encouraged to assume sufficient general interest to justify an exposition of our attempt at the solution of this important problem. We have been inspired by the opportunity offered by a fundamental course to present science in such a way as, first, to win for scien- tifiv careers the keen-minded students who are repelled by the drudgery and memory work of the old-fashioned course in descriptive chem- istry; and, second, to encourage the average student to adopt the scientific attitude towards his everyday problems, an attitude so neces- sary in combatting the superstition, prejudice, selfishness and dishonesty in the world of or- dinary aifairs. Although the following paragraphs ceseribe a course in chemistry, our aim in giving -+his SCIENCE [Vou. LV, No. 1423 course is not simply to teach chemistry, but through it to teach science. Whether the student proceeds to advanced work in chem- istry or enters one of the numerous fields for which it is prerequisite, or even takes no fur- ther scientific studies, it is important for him to have scientific training. The medium for this training is with us chemistry, but other subjects can, of course, be taught with a simi- lar purpose in view. in order to attain these ends we have been convinced that the laboratory work must be the central feature of the course, and that it must involve the solution of problems rather than the mere performance of illustrative experiments. This makes the work harder and therefore more interesting. The doctrine that the interest of the pupil is to be gained through ease and practicality is an educational fallacy. The stu- dent belies this doctrine in his own practice. Football is difficult and impractical, but it arouses far more interest than dishwashing, which is both easy and practical. The teaching of elementary chemistry has been slow to reflect the modern state of the science, which is no longer chiefly descriptive, but to a high degree mathematical and de- ductive. It has largely continued, in the language of Le Chatelier, to present “une énumération indéfine de petits faits particu- liers: Formules de combinaisons, densités, couleurs, action de tel on tel corps, recette de preparation, ete.” Laws and principles appear” to the student as dykes intruding into the mass, but not fusing with it. While it is difficult and probably undesirable to abandon altogether the traditional method, we have sought to sub- stitute for much of the purely informational material, a grasp of great principles such as the atomic, molecular, kinetic and ionic theo- ries, the mass law, and the periodic system of the elements, and to make them not mere defini- tions, but tools to be used with intelligence and skill. It is of little use for the student to de- fine the mass law unless he can actually use it in controlling a new chemical reaction. There is little point in committing the periodic table to memory unless he ean apply it with assur- ance in predicting chemical behaviors. We have been fortunate in being able to in- APRIL 7, 1922] clude general chemistry and qualitative analysis in one intensive course of two laboratory periods, two quiz periods, and two lectures per week throughout the year. It has thus been possible to minimize the usual break between these subjects and to develop systematically from the general principles of chemistry to their application in the problems of analysis. In the laboratory manual, written by Professor W. C. Bray with the assistance of Dr. W. M. Latimer, the effort has been to stimulate the student, through proper experiments; first, to gain a working conception of the atomic the- ory, the molecular theory and the behavior of gases. There follows next, a study of acids and bases and of titration, in order to develop and apply the idea of concentration. A further study of acids, bases and salts leads to the ionic theory. In this connection we have not considered it necessary to discuss an element at length before studying one of its compounds. Acetic acid, for example, is a quite familiar substance, whose acid properties may be in- vestigated before studying organic chemistry, and it is not necessary to diseuss sulfur, sulfur dioxide and the manufacture of sulfurie acid in order to do some laboratory work with the acid. There follow assignments on strong and weak acids and bases and the uses of indica- tors to measure the concentration of hydrogen ion; rapid reversible reactions and equilibrium; the reversibility of neutralization reactions, or hydrolysis; the properties of sodium, potas- sium and ammonium ions and the tests for sulfate and nitrate ions; the chemistry of calcium ion, developing solubility equilibria and the transformation and solution of precipi- tates; carbonic acid, carbonate and bicarbon- ate ions; the salts of copper, sulfur and zine, which prepare the way for the study of com- plex ions, amphoteric hydroxides and the im- portant reactions utilized in qualitative anal- ysis. Unknown solutions of increasing difficulty are introduced during this period, but more | emphasis is placed upon the student devising methods of analysis than upon committing to memory and using the orthodox schemes, which few chemists ever use in actual practice with- SCIENCE 307 out appropriate short-cut modifications. Oxida- tion and reduction reactions and electric cells are next introduced, followed by a study of ions whose separations involve oxidation and reduction. The effort is made constantly to throw the student upon his own responsibility, especially in observing accurately and in drawing general conclusions from his experiments. There are numerous questions calling upon him to pre- dict results of untried experiments. The lecture work is organized to supplement closely the laboratory work and to contribute an element of stimulus and inspiration. The topics in the early part of the course are taken up in much the same order. When acids, bases and salts are introduced in the laboratory, the lectures take up the alkali metals followed by the alkaline earth metals. The chemistry of the metals is so much simpler than that of the non-metals that we have been more than satis- fied by our abandonment of the usual order of presentation in which the halogens are intro- duced early in the course. An intensive study of the periodic system and its use in predict- ing and correlating not only physical proper- ties but chemical characteristics as well, con- tinues throughout the year with necessary in- terruptions from time to time by other topies. A reference book has been written for the course in which the aim has been to present clearly and briefly the principles of chemistry. The topics have been arranged in convenient order for reference rather than as in the lec- tures. The program of the lectures can thus readily be altered from year to year to try ex- periments of instruction, and making it easier to avoid the stagnation so fatal to even the best of courses. ~ But though general principles are emphasized in the teaching, we feel that the final test should not be the statement of the theories but their application. In our examinations, therefore, we usually say little about theories and prin- ciples, asking the student rather now to pre- pare one salt from another; how to accelerate or retard given reactions; how to shift certain equilibria; how to dissolve various precipitates; whether he would expect a given acid to be 308 stronger or weaker than another, or a certain salt to be more hydrolyzed than another; what properties of substances make them useful for certain purposes. The suecess with which the more intelligent students are able to answer such questions has convinced us of the efficacy of this form of instruction. The students seem also to grasp something of the enthusiasm and interest in the science of chemistry which turns some of them ultimately into capable research workers. We have noted with considerable satisfaction moreover, that even the more purely descrip- tive type of chemistry is rather readily learned. It is evident that the habit of correlating facts with each other and with theory has made the assimilation of the information comparatively easy. ‘ In order to achieve its object such a course must have the advantage of contact with the more advanced work and the research carried on in the department, and must be taught by men interested in discovery. It has been our policy, therefore, for all members of the de- partmental staff to take part at more less fre- quent intervals not only in the weekly confer- ences of instructors, but also in the laboratory and quiz sections. This practice has been ef- fective in unifying the purposes of all the de- partmental courses. The junior assistants are all candidates for the Ph. D. degree, and hence actively engaged in research. The better stu- dents are frequently invited to see the work these graduate assistants are carrying on in the research laboratory, which proves a source of considerable inspiration. Thus beginning with students from the high school, many of whom have not had even high school chemistry (for we admit students if they have had high school physies and trigonometry), we are able to accomplish in a single intensive course what is ordinarily extended over two years; and by continuing the same intensive method in the more advanced courses, to pre- pare the student for serious research at the beginning of the senior year. The large pro- portion of students who go on into graduate work and the output of the laboratory in re- search are evidence of the rich fruit of the SCLENCE [Vou. LV, No. 1423 method. We are confident also that those stu- dents who have studied elementary chemistry as preparation for some allied science have received a far better training for their later work than a more purely informational course could afford. JoEL H. HILDEBRAND ARE IODIDES FOODS? Ir has been considered by some biologists and chemists that living matter originated in the sea and the elements of living matter cor- respond to those found in the sea water. We might look, therefore, to the composition of sea water for the elements we should expect to find in living matter. Sea water consists largely of H,O and sodium chloride, and be- sides those the chief ingredients are magne- sium, calcium, potassium and carbonates, sul- phates and bromides, but there are also present the following elements in traces: ammonia, lithium, rubidium, ecxsium, strontium, barium, manganese, zinc, cobalt, nickel, lead, copper, silver, gold, radium, fluorine, iodine, nitrate, phosphate, silicate, aluminium, boron and arsenic. In searching for these substances in living tissue they have been found chiefly in marine organisms. However, chemists are finding them to a greater and greater extent in tissues of mammals. Damiens! finds bromine in a large number of animals and Gautier? finds iodine in quite a number of animals. We are familiar with the fact that fluorine is a regular constituent of bones and teeth and iodine of the thyroid gland. In experiments on the nutrition of animals, I have found it very convenient to feed them evaporated sea water and in this way insure a supply of all the rare elements. Cameron and Carmichael® have not observed any deleterious effect in feeding rather large doses of sodium iodide to white rats and rabbits. iron, The use of sodium 1 Damiens, A., Comptes Rendus, 1920, elvvi: 930. Damiens, A., Bull. Soc. Chem. Biol., 1921, lii: 95. ' 2Gautier, A., Comptes Rendus, 1920, elxx: 261; 1899, exxix: 66. : 8 Cameron and Carmichael, J., Journal of Bio- logical Chemistry, 1920, xlv: 69. APRIL 7, 1922] iodide in preventing goiter in sheep and in preventing the hairless pig malady is quite well known. The use of iodide in the treat- ment of goiter was first brought out by the work of Dumas, who was born in 1800 and studied pharmacy in Geneva. Dumas and Coindet found that iodine was valuable in the treatment of goiter. The use of sodium iodide in the prevention and cure of goiter was strikingly emphasized in 1917 by Marine and Kimball. This leads to the natural conclusion that the cause of goiter, or at least one of the causes, might be the lack of iodine in our diet. Iodine seems to be very rare in food and soils (Private communication of Oswald Schreiner) or else the former methods of detection have not been sufficient for such traces as do exist (See Kendall and Richardson® for later meth- ods). Iodine has been found in a number of rocks such as slates (Gentile®), limestones (Lembert’), dolomite (Rivier and Fellenberg®) and granites (Gautier) in Europe and has been reported in vapor from Vesuvius (Mat- teueci®), but it seems to be leached out so rap- idly from soils it is seldom to be detected. Forbes?® failed to find iodine in about half of the specimens of foods, and Cameron" had a similar experience. The question of the rela- tion of goiter to locality has caused much dis- cussion and most persons have come to the conclusion that goiter is due to the presence of some substance rather than the absence, but since much fruitless work has been done in the attempt to find this substance it would be well to investigate more thoroughly the ques- tion of the absence of some substance. 4 Marine, D., and Kimball, O. P., Jour. of Lab. and Clinical Med., 1917, iii: 40. 5 Kendall, E. C., and Richardson, F. S., Journal of Biological Chemistry, 1921, xliii: 161. 6 Gentile, 1849, Jahresber. d. Chemie, 251. 7 Lembert, 1851, Jahresber. d. Chemie, 319; Jl. Pharm. (3), xiv, 240. 8 Rivier and Fellenberg, 1853, Jahresber. d. Chemie, 924. 9 Matteucci, 1899, Comptes Rendus, exxix, 65. 10 Forbes, E. B., Bull. Ohio Agri. Station, No. 299, page 487. 11 Cameron, A. T., Journal of Biological Chem- istry, xviii: 335. SCIENCE 309 Goiter occurs largely in mountainous regions or regions far from the sea. Iodine is so rap- idly leached out of the soil that the supply of it may depend upon salt spray blown from the sea. During storms the waves are broken into a spray and the water evaporated and the salt carried for long distances through the air. This salt is washed down out of the air by rains and contaminates the rain water. In the accompanying figure 1 taken from Emmons'* GRQRREneaeceses lee PE, ace eT a nen Carnie); a Wi BS 1 iE SS a Faun TcNereay chiorae map of Are Engand end Nrw Tore Figures oo carve fadicate parte Pr Seco Fig. 1 is shown a map of the eastern states, indicating the relative amount of sea salt in the rain water. Determinations were made by the weight of a certain constituent (the chlorine ion) by the ordinary silver nitrate titration, but sea water is of very uniform composition in regard to everything except H,O. That is to say, when the salts are diluted or concen- trated, they are all changed in the same ratio, and the dry salt would be of uniform com- position, so that the chlorine titration would indicate the relative amount of iodine. Evap- orated sea water contains 50 parts per million of iodine, whereas the chlorine forms 55 per cent. of the evaporated sea water. The lines on the map indicate parts per million of chlorine in the rain water and the iodine would be about one ten-thousandth of this amount, or, in other words, a part per million of chlo- rine would be about a part per ten billion of iodine. We can say, therefore, that the amount of iodine in the rain water rapidly deereases as we go from the coast, and is least 12 Emmons, W. H., 1913, U. S. Geol. Survey Bull., 529. 360 in the Great Lakes region. Figure 2 (taken from Davenport and Love'*) shows a map of GOITRE, SIMPLE TOTAL, CAMPS AWD LOCAL BOARDS RaTIO PER 1000 MEN Fie. 2 the goiter as reported by the Draft Board and we have more or less the same distribution in the opposite direction and see more goiter towards the lake region and less toward the coast. Owing to the fact that no chlorine maps have been made for the rest of the country, it is not possible to extend this comparison. It is reported, however, from various sources (and is my personal observation in Minnesota) that the whole Great Lakes region is quite goiterous, and this is necessarily a region in which very little sea salt falls upon the land since the air blowing over it has already been washed free from sea salt by previous rains. Besides this goiterous region, various mountainous regions in the country have been reported to be goi- terous and this is also true of Europe. These mountainous regions may be relatively near or far in relation to the sea. We often speak, however, of the clear mountain air free from dust, and it seems very probable that sea salt, being very heavy, would tend to remain in the lower strata of air rather than rise to mountain heights. Voleanic dust when thrown to great heights may remain in the upper air for a con- siderable time, but this is true only of the very finer particles of dust. The larger particles settle very rapidly. In fact, so rapidly as to sometimes bury towns. We may suppose the same things are true of the sea salt in the air. 13 Davenport, C. B., and Love, A. G., 1920. Scientific Monthly. SCIENCE [ Vou. LV, No. 1423 The very finest particles may be carried to greater heights than the larger ones, provided they can escape the rain long enough to reach that height in the first place. The voleanic dust is thrown rapidly to the great height. The sea salt is thrown into the air at the sea level and its reaching a great height is very for- tuitous. Therefore, we may suppose that the oceurrence of goiter in mountainous regions fits in with the deficiency hypothesis. The ab- sence of iodine from the rain water and soil in a region would necessitate its absence from the plants growing in the region and the ani- mals subsisting entirely upon the plants and rain water. Man, however, may receive con- siderable food from some distance. Food rich in iodine, such as fish, oysters, squid, sea- hares, sea urchin ovaries and sea weed, is con- sumed to a much greater extent along the sea coast than in inland regions. Sea weed is not a general article of diet and is only eaten habitually by the Japanese and certain other peoples living close to the sea. Sea food, owing to its perishable nature, is largely con- sumed close to the sea. Therefore, even with considerable means of food distribution, the relation of goiter to distance from the sea might still be maintained. Water might hold the same relations. Water flows toward the sea and therefore does not bring iodine from regions richer in it. Water courses rise either in mountainous regions or in inland lakes which are goiterous regions. Certain mineral springs may be exceptions but the consump- tion of such mineral water is rather limited. The principal other factor in the diet is salt. Salt was first obtained by the evaporation of sea water. The process used reduces the amount of iodine, but the extent of reduction may depend upon the amount of refining that the salt undergoes. The sea water is evap- orated in shallow ponds until the caleium ear- bonate precipitates. It is then further evap- orated in other ponds until the sodium chloride crystallizes out. The mother liquor from the sodium chloride crystals, known by geologists as the bittern, contains most of the iodine along with magnesium chloride and other salts. This erude sodium chloride, which may have some iodine clinging to it, was formerly con- APRIL 7, 1922] sumed in this condition but nowadays is often further purified by washing and reerystalliza- tion so that the iodine, which is in very low concentration in the sea water, is reduced to infinitesimal quantities. Salt was not purified to as great an extent in the early days as it is now. When it comes to rock salt Nature has already purified it to some extent. Van’t Hoff showed the mechanism of stratification of the rock salt deposits. The sodium chloride layers are already more or less purified. This salt when it is mined in the dry state or when it is obtained from salt springs, which consist of water which has come in contact with these salt deposits, is still further purified for table use. Hayhurst'! investigated some of the salt works in Ohio where the salt is obtained from deep wells. Bromine and a trace of iodine are sep- arated out of the salt and the bromine sold as a by-product. I have been unable to obtain any evaporated sea water, that is to say, salts obtained from the sea water without fractional precipitation or purification, from any commercial salt manufacturers on the coast. Through the kindness of Metz & Company, Dr. Sherndahl evaporated 100 gallons of sea water for me to use in experimental feeding. This, together with sea water which I have had opportunity to evaporate, has been dried by baking it in an oven. When the last traces of water are eliminated in this way, hydrochlorie acid fumes are also given off. The cause of this, as point- ed out by Sorensen, is a reaction between mag- nesium and the other salts whereby oxides of the alkaline earth metals are formed with the elimination of hydrochloric acid. If the baking is continued long enough no calcium or mag- nesium chloride remains and therefore the salt remains dry. If the sea water has been evap- orated in an iron kettle some iron oxide is added to it, which improves it from a nutritive standpoint. The necessity of baking may be eliminated by adding 6 grams of H,PO, to the liter and this salt may aid in the treatment of rickets. In my animal experiments this evap- orated sea water has been used for generations of animals as the salt ration, with gratifying results. It is very low in phosphorie acid 14 Hayhurst, E. R., Science, 1921, liv: 131. SCIENCE 361 unless H,PO, has been added, and if casein is used as the protein there is not sufficient phos- phoric acid in the casein for the nutritional requirements. The question as to whether there is sufficient calcium or not for the total calcium ration has not been definitely settled. If wheat flour is used for the carbohydrate portion of the ration there is sufficient addi- tional calcium in the wheat flour to bring the calcium up to the requirements. The question arises whether it would not be advisable for us to feed our children an im- pure salt. If iodine is the only mineral con- stituent that might be deficient it could be easily added to the salt. We have not proved, however, that the other mineral constituents of sea water are not necessary in the diet. There- fore, it would seem much simpler to use evap- orated sea water as the salt ration if it could be obtained, and it only remains to create a demand for it. The present process of com- mercial evaporation of sea water could be simplified if an impure salt was desired. That is to say, only one pond would be necessary for the evaporation of the sea water. Sea water could be evaporated in this pond as far as practical by the sun. The total contents of this pond, including both solids and liquids, could then be removed and evaporated by heat and thoroughly mixed, and baked at a high enough temperature to produce a dry salt. In case the erystals of salt were large, owing to the slow evaporation at first, they could be ground. In baking, however, there is a ten- dency for these crystals to break up. The inclusion of a little earth with the salt would not impair its nutritive qualities and the product would be sterilized by the high tem- perature used in baking. It has been shown that salt obtained by the usual methods from the salt evaporating plants on the French coast is reeking with bacteria. The production of a sterile product might be an advantage. The dietary salt of several adults, children and infants has been limited to the above described from Metz for many months with gratifying results, in a goiterous region. J. F. McCrenpon THE LABORATORY OF PHYSIOLOGICAL CHEMISTRY, UNIVERSITY of MINNESOTA 362 GEOGRAPHY AS A PROFESSION INTRODUCTION Mopern geography is a young science, and usually college students know little of its con- tent. If they think of it at all, it is usually as a subject which they were forced to study when young, but sloughed off when they became men. They do not recognize that the causal element now stressed so strongly has given it a content which has placed geography in the university curriculum and added greatly to its practical worth. RELATION TO OTHER SCIENCES ’ The first point to appreciate is that a liking for geology, physics, biology, mathematics, as- tronomy, history, economics, anthropology, or ethnology, excludes no one from becoming a geographer. Geography is not an isolated science. It is an intensively interlocking com- bination of other sciences directed towards a broad, but specific field of study. The great war, if it has proven anything, has proven that geography and its ramifications present prob- lems worthy of the keenest and best trained in- tellects of the day. The fact that geography is now understood to be of value in settling dis- putes between new states, in understanding the possibilities of commerce open to this nation’s newly created merchant marine, and in inter- preting to the advantage of all concerned the prides, prejudices, and virtues of those with whom foreign trade does or may bring close contact, has added greatly to the prestige of the science and those professing it. OPPORTUNITIES IN GEOGRAPHY Several types of employment are open to the geographer. The following list is not ex- haustive, but suggests the major opportunities offered. 1. The government now recognizes as never before the value of trained geographers. There ean be little doubt but that its need of such men will increase. 2. Map-publishing houses must skilled geographers. 3. Great corporations, commission houses, and banks, as the United States expands its foreign trade, are recognizing more and more employ SCIENCE [Vou. LV, No. 1423 the necessity of having trained geographers on their staffs. Certain banks have found it nec- essary to establish their own schools in order to give adequate geographic training to men in whose charge they wish to place their foreign branches. 4. Although the world is commonly thought of as pretty well explored, the facts are that many large areas even on our own continent are known only very superficially. Skilled geographers are needed to accompany scientific exploring expeditions, and with the increasing need of tropical products, the demand for such men will increase. 5. Men can not take advantage of the pre- ceding opportunities without adequate training. At this present moment, universities are hand- leapped in giving this because of the lack of trained teachers. The supply by no means meets the demand. The student who prepares himself to teach university geography is taking advantage of one of the best opportunities in the entire pedagogical field and rapid promo- tion is certain for him if he deserves it. TYPES OF INVESTIGATION POSSIBLE The main types of investigation possible are as numerous as are the sciences allied to geog- raphy, with almost innumerable subordinate lines under each. A study of the table of con- tents of a half dozen leading geographical jour- nals at home and abroad will give some idea of their variety. Within their covers will be found studies of all phases of weather and climate, of the physics of the atmosphere, of map-making and map-interpretation; explana- tions of the distribution of the races and lan- guages of man, and of the relations between man and his natural surroundings; discussion of why some countries are great and others weak; accounts of exploration; reasons for the courses and materials of trade; and the whys and wherefores of the surface of the land and the bottom of the sea. This is just a hint of the variety of interesting, instructive, and profitable studies which come to the geographer. COMPENSATION Few geographers will become rich. The de- sire for wealth can never be the compelling APRIL 7, 1922] } reason for entering this subject any more than others. There are, however, varied reasons why a young man may well consider it as a life pursuit. 1. Vigor of body is the natural reward of the active geographer. This needs no amplifi- cation. 2. The geographer is brought into intimate contact with many lines of human interest and endeavor. Soils, crops, commerce, landscapes, weather, all kinds of natural resources, both developed and potential, interest him. And, if he travels, as he must to progress far in his science, he gains an insight into the hearts of men and nations second to none. The geog- rapher becomes in reality a “citizen of the world” with much power to promote interna- tional understanding and good-will. 3. The modern science is young—younger even than its sister science, geology. Two im- portant results follow: (a) The opportunities for employment are numerous. Those who enter the subject now are on the “ground floor” as it were, in a movement which promises to be of much edu- ’ cational and economic importanee. (6) The opportunities for original discov- eries and contributions are great. With their accomplishment comes the reward which the consciousness of having added to human knowl- edge always brings. The full power of this needs to be experienced to be understood. There is also the additional satisfaction which comes from being a pioneer in the development of new aspects of an important subject. These advantages are on the whole quite sim- ilar to those of geology. In this connection, it may be interesting to know that while numer- ous men enter geology from other subjects, few leave it—and of those who do, by far the larger number change into this closely allied science, geography. The application of the broad learn- ing of many years to a study which opens unlimited possibilities for bringing to man- kind material prosperity, mutual good-will and friendly understanding, is intensely fascinat- ing to the maturing man who feels a eall to serve humanity, yet desires to labor and in- vestigate in his chosen fields of science. Any SCIENCE 363 young man who has seriously thought of scien- tifie work as an attractive life profession must find in geography an appeal which merits his careful consideration. H. P. Lirrir NATIONAL RESEARCH COUNCIL VIENNA WHILE in Vienna last summer I was like other visitors deeply impressed with the supreme importance to the world of the prob- lem of relieving this sadly stricken capital. At that time the exchange rate for the Austrian crown was about 600 to the dollar and it has since fallen to a rate of 10,000 to the dollar. The average salary of the professional man even six months ago was only the equivalent of between $100 and $200 a year, and the recent financial panic has brought the intel- lectual worker to straits which are almost beyond belief. There are, it seems to me, three reasons why the situation in Vienna makes a unique appeal to the professional men and women of America. In the first place the actual suffering is far greater in Austria than in any other country outside of Russia. In the second place, there is at stake here not only the life and health of individuals but the life of a civilization, one of the most liberal and enlightened in the world. The universities and schools of Vienna have for centuries been the eastern outposts of the intellectual life of western Europe and in music, in medicine, and in many other arts and sciences her contribution has been unrivalled. In the third place, a peculiar responsibility rests upon America in this connection because the recent panic would have been entirely pre- vented if the congress of the United States had not delayed for six months the passage of the foreign debt funding bill which was essential to the carrying out of the Ter Meulen plan for the financial rehabilitation of Austria. We can take great pride in what has been done by the American Relief Administration, the American Red Cross and the Friends Relief Mission to mitigate the suffering of the people of Vienna. . With the passage of time, how- ever, it is natural that the enthusiasm of 364 service should somewhat relax. It is important to remember that the situation is if anything to-day more critical than ever, and that the year 1922 will probably determine whether Vienna shall survive or perish as a center of intellectual and artistic life. I am therefore venturing to ask if you will not print the en- closed extracts from a letter just received from Miss Hilda Clark of the Friends Relief Mis- sion, who has just returned to Vienna after a visit to the United States. I have personally no connection with the Friends Service Com- mittee but I admired the work they were doing in Vienna beyond measure and I can assure the readers of Science that gifts of money or of clothing sent to the American Friends Service Committee, 20 South 12th Street, Phil- adelphia, for the use of the professional men and women of Vienna will accomplish a service of unique value for humanity and civilization. C.-E. A. WINSLOW YALE UNIVERSITY, FEBRUARY 3, 1922 EXTRACTS FROM MISS CLARK’S LETTER I am interested to find, on getting back here, that the worst effects of the financial collapse of last autumn have not yet begun to show, at any rate, among the majority of the working-class population. Unfortunately, the reason for this is one which no one dares to think can be more than temporary. It is, that wages have boldly been put up, and in many trades, have almost risen to follow the increased cost of living so that people are actually better off than they were two years ago. This applies particularly to food. The situa- tion in regard to clothing is rather curious. Even in those trades where the rise in wages has been greatest, the fluctuation in prices is so uncertain that any article of clothing, for which it is neces- sary to save from week to week, is likely by the time the necessary money to buy it has been saved, to have doubled in price. You will see what a strong discouragement this is to people to save, and how impossible they feel it. Really, the home maker is in much the same diffi- culty as the manufacturer, and the working man or woman has not always the intelligence to cope with it. This tends to make people, espe- cially, of course, the more thoughtless, even if earning the best wages, spend their money on SCIENCE [Vou. LV, No. 1423 food each week, rather than save it for clothing. I do not think anybody would quite understand and sympathize with them who has not been, to some extent, in the same position. Fortunately, the expenditure on food does, after all, help to restore the physique of the workmen, which had got so very much undermined before this rise in wages took place, but it creates a great deal of misapprehension on the part of social observers in the town whose first idea is that the working people are much better off than they really are. This would not matter, were it not that there appears to be no hope at all that the present wage level can be maintained without causing a great increase in unemployment. It is not thought that industry can stand the present cost of production, as Austria has only obtained her markets, during the past year, by being able to undercut other manufacturers. It seems inevita- ble that she will go through the same phase of unemployment as has occurred in other countries. To meet this, she has at present absolutely no resources except a very uncertain amount of savings made by the most successful of the war- profiteers. Perhaps one should add to her assets the extra- ordinary courage and grit a great proportion of the people are showing, and the energy with which they are turning to the increase of their home food production. Unfortunately, a good deal of capital is required to carry this out to a sufficient extent to enable her to tide over an industrial crisis, but the amount of capital needed is very much lessened by the energy and hard work which the men themselves are giving. First of all, they have increased the allotment garden production, and having nearly all the land that can possibly be reached by the people living in the present houses in Vienna, they are moving out to live in the country close to, and building houses with their own hands to live in while they cultivate the land. In this way, their labor is not withdrawn from the industries which are still working, and if there is temporary un- employment, they will be ready to return when conditions improve. I think it is important that people should realize that to provide capital for this increase of the home food production is the only way of averting absolute starvation if unemployment on a large scale should occur, even if this were only temporary. There is no reason to suppose that industry here could not recover directly condi- APRIL 7, 1922] tions in Europe generally improve, or that Vienna would not be able to take her place on equal terms with other countries without the advantage of a cost of production subsidized by foreign relief. With regard to the actual physical condition of the people at the moment, especially of the children, in which the people who have so gen- erously helped in America are naturally most interested, thanks to this increase in wages, which has kept the majority of the working class from coming on our hands for relief, we have been able, with our limited programme, to do what was necessary to save the lives of the children, so far, this winter. In the middle-class, where rises in salary, and fixed incomes have not come anywhere near the increase in the cost of living, the suffering is very terrible, and increasing as the colder weather sets in; we are now in the grip of a snowstorm which makes life almost impossible for people who have not been able to buy either clothing or fuel, and whose food has been reduced to about a quarter of that needed to maintain their vitality. The professional classes here have few children, and have had hardly any since the war, so that the relief for young children, which is our main piece of work, does not very much help them. We have, therefore, turned our attention very specially to them this winter, and are particu- larly increasing, as far as our funds will allow, the help for the young children between the ages of 14 and 18 who, even if given one meal a day by the American Relief Administration, and only a very few of them get this now that the num- bers have been reduced, are really not able to keep body and soul together while they are train- ing themselves to earn their living. The students in the university are still getting some help from the World’s Student Christian Federation, but this, unfortunately, is coming to an end, and it is terrible to think what will happen, if they are unable to continue it, as the position of the students is certainly worse than it has ever been. We are specially turning our attention to the lower grade or trade colleges of a lower standing than the university, and which are not included in this student relief,—where a great many of the poorest of the professional classes are trying to .get their boys and girls trained for work which will enable them to earn their living more quickly than they could if they had to take the whole university course. We are now helping nearly SCIENCE 365 500 in this way, providing a fortnightly ration ‘of extra food, enough to give about a third of the minimum calory requirements for an adult, and are also dealing with the whole family, who are often found, after individual investigation, to be in the most pitiable plight. All these families have had a ration of clothing averaging from six to ten garments per person, towards which they pay a trifling sum, which covers overhead ex- penses, and other help has been given where it was felt that the family could be placed in an independent position. The students selected for help have been gen- erally those in their final year, as it is found that this is the time when they tend to break down from the strain of combining study and a job, in the attempt to earn their keep. We are hoping to double the number, but if only we could obtain the funds we ought to increase it to 2,000 or 3,000. At present, the need for clothing is, perhaps, the most pressing general requirement. We do not, of course, need to raise funds for those in receipt of the best wages, even though they are in the difficulty I described in the beginning of my letter, but it must be remembered that the great majority are still only in receipt of wages that will barely provide the minimum food for a family, and have absolutely nothing to spend on clothing, and in the professional classes, this is universally the case. They are faced with losing their jobs because they have not got the clothes in which to stand, and the bitter weather now upon us is, of course, making the need tenfold more urgent. People may feel that it is now too late to send clothing for this winter, but if you are able to make it known how great the need is, I hope you will not let people be discouraged by the idea that it may be too late, because people require clothes to wear in the summer, and par- ticularly in the case of underclothing, we did not find last year, that the demand was greatly less- ened at the end of the winter. SCIENTIFIC EVENTS MEXICAN ARCHEOLOGY! Av a meeting of the Royal Anthropological Institute on November 22, Mrs. Zelia Nuttall gave an account of recent archeologocal investi- gations in Mexico. As an introduction to her report, Mrs. Nuttall referred briefly to the fact 1From Nature. 366 that after a period of quiescence of some cen- turies the great voleano Popocatapetl had again become active in 1920, and that its activity still continued. During the last decade evidence that great voleanic disturbances had taken place at long intervals has been forthcoming. Two distinct types of figurines have been found in conditions which indicate that the topography of the valley has been changed and its inhabitants destroyed by great catastrophes antedating the arrival of the Nahuas or Aztecs. Of these figurines the first, provisionally dis- tinguished as the sub-gravel type, was brought to Mrs. Nuttall’s notice in 1920, when specimens were offered for sale by Indians, and she herself discovered an example in sitw under a gravel bed at Atzacapotzaleo. They were delicately fashioned of fine clay, with slender bodies, long faces, smooth-hanging hair, some wearing chap- lets. All presented a worn and polished sur- face. In the Valley of Mexico the gravel beds extend under the lava flow at the base of the extinct voleano Ausco. ; Under the lava bed, to which Dr. Tempest Anderson assigns an age of at least 20,000 years, Mrs. Nuttall in 1908, and afterwards Senor Gamio, head of the Department of Arch- eology of Mexico, have discovered a second type of figurine, to which the name “sub-lava type” has been given. This type is characterised by turbans and eaps, evidently of fine stuffs or fur, and decorated with circular ornaments of stone or shell. They indicate that the southern part of the valley was inhabited by a race totally distinct from that of the “sub-gravel type” and the Aztec. The distribution of the clay figurines is now under investigation. They have been traced as far as Guatemala. Mrs. Nuttall also described the results of re- cent excavations at Teotihuacan, during which a small pyramid was opened up and recon- structed by Senor Gamio. A tunnel pierced at the height of 35 feet to the center of the pyra- mid revealed that it had been formed of mud filled with innumerable fragments of pottery vessels which had prevented the mud from eracking when it baked in the sun. A remark- able discovery was that of the remains of the SCIENCE [Vov. LV, No. 1423 ancient pyramid temple with a wonderful sculp- tured frieze which had been partly destroyed and then concealed by another terraced pyramid temple built in front. The sculptured serpents’ heads and the masks of the water-god Tlaloc are of a form hitherto unknown. Associated with them are sculptured shells, principally the conch shell and the pecten or pearl shell. Not only is it remarkable that sea-shells should be represented in sculpture in the heart of the continent, but the association of the water-god with the ocean is entirely new. In the discussion which followed Mrs. Nut- tall’s paper, Mr. Maudslay expressed the hope that it might be possible before long, by the elaboration of a system of stratification, to date Mexican antiquities. As Mexico appeared to have been untouched by outside influence, the study of its antiquities afforded evidence of the highest value for the study of the development of the human mind acting by itself. Mr. T. A. Joyce emphasized the importance of the evi- dence relating to the figurines, and pointed out that the British Museum had acquired a figurine of similar technique from Eeuador. Professor Eliot Smith expressed the opinion that, con- trary to what had been stated by Mr. Maudslay, Mexican antiquities showed clear evidence of influence from outside and in particular from Asia. Mrs. Nuttall’s work showed that this culture must have crossed the Pacific. THE ROYAL AGRICULTURAL SOCIETY OF ENGLAND Tue council of the Royal Agricultural Soci- ety of England has, as reported in the London Times, unanimously adopted a report from the chemical committee of the society, which had been instructed “to consider in what way, in view of the altered circumstances, the scientific side of the society might be developed.” The council afterwards appointed the following research committee to carry out the research proposals made by the chemical committee: The Duke of Devonshire, Lord Bledisloe, Professor W. Somerville, D.Se. (Oxford), Mr. Dampier Whetham, F.R.S. (Cambridge), Mr. Henry Overman, and Mr. John Evens, with Mr. Charles Adeane (chairman of the finance APRIL 7, 1922] committee), Mr. J. L. Luddington (chairman of the chemical committee) and Mr. C. Colt- man-Rogers (chairman of the botanical com- mittee) as ex officio members. The chemical committee recommended that the society should form a fund definitely re- served for research, into which payments should be'made as funds allow. The following paragraphs summarize their proposals: (a) That the results of the past experimental work of the society should be collated, abstracted and published. i (b) That the society should continue to devote part of its scientific energies to agricultural re- search, and should at once establish a separate fund for its support. (ce) That members of the society be invited to make suggestions as regards practical problems which they consider require experimental investi- gation. (d) That members of the society be invited to cooperate, by the provision of land, stock, ete., in carrying out such work. (e) That scientific institutions as occasion arises be asked to aid the society in the elucida- tion of problems that can not be dealt with on an ordinary farm. (f) That a research committee of eight mem- bers be set up, to review proposals and to ini- tiate and supervise experiments. (g) That the research committee should submit to the council in November estimates for the forthcoming year’s work, and in March a report on, and the audited accounts for, the work of the last year. (h) That arrangement be made at once for the publication of past experimental results, and that experiments be initiated as soon as possible. The committee points out that the society has successfully undertaken a large amount of valuable and varied experimental work, not only at Woburn, but elsewhere, and results of much service to agriculture have thereby been secured. The work has included the manuring of crops and grass, green manur- ing, sowing down land to grass, the quality of seeds, finger and ‘toe in turnips, the treatment of farmyard manure, cheese making, the fat- tening of cattle, sheep and pigs, and the rear- ing of calves. The results are reported in the Journal, but, although available, are not con- venient of access. The committee believes that. SCIENCE 367 farmers and students would benefit greatly if the society would issue, in at least two volumes, one dealing with crops and the other with stock, the experimental results it has achieved. A substantial fee would have to be paid for the work, but there should be no difficulty in find- ing a firm who would relieve the society of any financial responsibility in respect of publica- tion. The committee holds that further experi- mental work is vital to the interests of the society. For “research without reference to utilitarian ends” the society is not fitted, either in respect to technical equipment or’ of per- sonnel; but it is eminently quality to undertake research which deals directly with problems that arise in practice. Its members consist largely of practical farmers with long experi- ence of the land and of the difficulties and problems of its cultivation. At the moment the committee suggests that the following questions might well engage the society’s attention: (a) The value of ground mineral phosphates, more particularly in the improvement of pasture. (b) The use of various forms of lime on grass and tillage crops. (c) The use of wild white clover, wild red clover, bird’s foot trefoil, ete., in laying land down to grass. (d) The profitable utilization of whey. MOLDING SANDS Tue Committee on Molding Sand Research under the guidance of Division of Engineering, National Research Council, and the American Foundrymen’s Association, has made progress in its program of research. The United States Geological Survey and the various state geolog- ical surveys have promised to cooperate with the sub-committee dealing with this phase of the work under the chairmanship of Professor H. Ries, of Cornell University. This sub- committee has prepared a letter of instructions to the state geological surveys, which will standardize methods of making the surveys of molding sand resources. Work on standardization of tests is well under way. Questionnaires have been sent out to gather information on the present methods of testing physical properties of sand. A 368 digest of replies to these questionnaires is ex- peeted to be available shortly. Many firms and universities have offered to cooperate in the research work. Every en- deavor will be made to maintain their interest and to assign problems to those universities and industrial laboratories offerimg to co- operate; due regard being given to the facili- ties and talent available. A list of research subjects has been compiled, which is given in part below: 1. Recovery of used molding sand through re- storing bond to the sand by subjecting it to con- tact with water vapor under high pressure. 2. The effects of additions of certain chemical reagents upon the physical properties of clays and clayey materials, such as molding sand. 3. Effects of water content on the bond and permeability of a molding sand. 4, Effects of different water per cents. in mold- ing sand on the milling and drilling speeds of light gray iron castings. 5. Research on fusion quality of facings (fune- tion of ‘‘peeler’’). 6. Tests of various kinds of clays for restoring bond to molding sand. 7. Comparison of the life of different molding sands. 8. Effects on plasticity of bond in molding sand and reduction of water content when using oil. 9. Effects of wet and dry storing of sand on bonding quality. The American Steel Foundries Company has permitted a representative of the committee to make a digest of the sand reclamation work carried on by the engineering staff of the A. S. F. and has assisted in the preparation of this digest. Because of the scarcity of steel molding sand of the best quality and the prob- lems arising from having to dispose of large quantities of refuse sand, this company has carried out an extensive investigation of meth- ods of reclaiming the good material which is usually lost, whenever the so-called refuse sand is thrown away. After experimenting along different lines and thoroughly going over meth- ods employed in other plants, a process of reclaiming old sand ealled “centrifugal serub- bing” was developed. SCIENCE [Vou. LV, No. 1423 After establishing the principle of this method, equipment was designed which permits a recovery of about 70 per cent. of refuse sand. Cost figures for 1921 show that a ton of re- claimed sand costs about $1 per ton against the cost of new sand, at the plant, of $2.65 to $3.85 a ton. The process involves cleaning the sand grains of adhering fused material, then separating by air currents the good sand from the bad material. Included in the 30 per cent. loss is some good bonding material which, be- cause of its similarity to bad material, can not be economically separated. The report covers the theory of sand reclaim- ing, centrifugal air scrubbing process, cost of reclaiming sand by the latter process, and a description of the proposed sand reclaiming unit. THE BRITISH INDUSTRIAL FATIGUE RE- SEARCH BOARD THE second annual report of the Industrial Fatigue Research Board has recently been issued. As reported in the British Medical Journal it contains “a comprehensive summary of the chief results obtained by the board since its inception some three years ago. These re- sults have been published in a series of sixteen reports, which represent the output of the board’s investigators over a period of about two years, for there is necessarily a consider- able delay before the results of the inquiries reach the stage when they are ready for pub- lication. If any critie had doubts as to the value of the board’s work, and the importance of its further development on the lines laid down in this report, we think that such doubts would speedily be laid to rest by an impartial study of its pages. They contain a solid body of information which is of direct value to em- ployers of labor, and to welfare workers and factory inspectors; the practical application of this information to the remedy of adverse industrial conditions would produce a very real improvement in the health and efficiency of the workers. In the analysis of published work with which the report opens the various tests of efficiency and fatigue employed are briefly described, and then a more detailed account is given of the results obtained in various indus- Aprin 7, 1922] tries concerning output in relation to hours of labor and the duration of work spells and rest pauses. A subsequent section of the report deals with the impersonal physical conditions of the worker’s environment, such as tempera- ture, humidity, ventilation and lighting, and the effects of these conditions on efficiency. Personal factors, such as vocational selection and guidance, time and motion study, and the effects of such conditions as seating and cloth- ing, are treated in considerable detail, whilst a shorter section deals with such matters as or- ganization and the relative importance of human and mechanical factors in efficiency. Most of the sections are illustrated by diagrams reproduced from the published reports of the board, and they show at a glance the hourly and daily variations of output observed under various conditions, the effect of regular rest pauses on output, the improvement of output caused by more adequate lighting and by better ventilation, and the value of certain psycho- physiological tests in measuring the skill of compositors. The future of the board is said to be full of promise, for, in addition to the investigations already made in certain branches of the textile, iron and steel, and boot and shoe industries, others are now in progress in the laundry and the pottery industries, whilst ap- plication has been made to the board by various trade boards and research associations for the institution of inquiries into several other im- portant industries.” THE MEDICAL FELLOWSHIPS OF THE NATIONAL RESEARCH COUNCIL As reported briefly in Scimncx last week, the National Research Council has established fel- lowships in medicine created for the purpose of increasing the supply of thoroughly quali- fied teachers in medicine in both clinical and laboratory subjects and in both curative and preventive aspects. The fellowships are sup- ported by appropriations of the Rockefeller Foundation and the General Education Board amounting in total to one hundred thousand dollars a year for a period of five years. Those receiving awards will be known as fellows in medicine of the National Research Council. To qualify for appointment as a fellow, a SCIENCE 369 candidate must have the degree of doctor of medicine or doctor of philosophy from an ap- proved university, or preparation equivalent to that represented by one of these degrees. Only citizens of the United States or Canada will ordinarily be appointed, although the fel- lowship board is authorized to set aside this provision in exceptional eases. The fellowships will be open to both sexes. Since the principal purpose of establishing these fellowships is to increase the number of competent teachers in the field of medicine, each incumbent will be required to gain experi- ence in teaching. As creative work is regarded as essential to the best teaching, emphasis will also be placed upon research. Fellows will be at liberty to choose the insti- tutions or universities in which they will work, as well as the men under whose direction they will carry on their researches, subject to the approval of the fellowship board. Appointments are to be made for a period of twelve months, beginning at any time in the year, with an allowance of six weeks for vaca- tion. The time may be extended, however, if in the judgment of the board the work which the fellow has done justifies it. The stipends are not definitely fixed in amount; but they are intended to enable the individual to live comfortably while carrying on his special work as a fellow. The fellowships will be administered by a special committee, known as the Medical Fel- lowship Board of the National Research Council. Correspondence concerning the fellowships should be addressed to the Division of Medical Sciences, National Research Council, Wash- ington, D. C. INTERNATIONAL CHEMICAL CONFERENCE AT UTRECHT In June of last year, Professors Bilmann, Bruni, Ernst Cohen, Donnan, Victor Henri, Kruyt, van Romburgh, Schenk, Walden and Wegscheider met in conference at Utrecht, and agreed to hold there in 1922 a scientific chem- ical meeting, the date of which is now fixed for June 21, 22 and 23 of this year. The pro- gram will consist of several general papers, to- 370 gether with a number of shorter scientific com- munications. This invitation has been sent to those whose names are given in the accompanying list: America (United States): L. M. Dennis, M. Gomberg, F. G. Keyes, G. N. Lewis, W. A. Noyes, Th. W. Richards, J. Stieglitz, E. W. Wash- burn, W. R. Whitney. Czecho-Slovakia: J. V. Dubsky, A. Simek. Denmark: E. Biilmann, N. Bjerrum, J. N. Bronsted, J. Petersen, S. P. L. Sérensen, Chr. Winther. Germany: M. Bodenstein, G. Bredig, F. Foster, O. Hahn, A. Hantsch, P. Pfeiffer, R. Pschorr, R. Schenck, Schlenck, A. Stock, A. Wohl, H. Wieland. France: M. de Broglie, Mme. P. Curie, Darzens, A. Debierne, V. Grignard, Victor Henri, P. Langevin, Ch. Marie, C. Matignon, Ch. Moureau, J. Perrin, G. Urbain. Great Britain: A. J. Allmand, E. C. Baly, F. G. Donnan, A. Findlay, H. Hartley, W. C. McC. Lewis, F. A. Lindemann, J. W. McBain, W. H. Perkin, N. Sidgwick, F. Soddy, J. Walker. Italy: A. Angeli, G. Bruni, L. Cambi, A. Mio- lati, M. Padoa, N. Parravano, G. Plancher, G. Poma. Holland: H. J. Backer, J. J. Blanksma, J. Boeseken, Ernst Cohen, A. F. Holleman, F. M. Jaeger, H. R. Kruyt, W. Reinders, P. van Rom- burgh, F. A. H. Schreinemakers. Norway: H. Goldschmidt. Austria: E. Abel, J. Biliter, F. Emich, A. Kailan, R. Kremann, A. Klemene, W. Pauli, F. Pregl, A. Skrabal, R. Wegscheider. Russia: M. Centnerschwer, W. Ipatiew, N. Kurnakow, Lasarew, Schiloff, L. Tscitschibabin, L. Tsugajew, P. Walden, N. Zelinsky. Switzerland: E. Baur, P. Dutoit, Ph. A. Guye, I. Fichter, J. Picard, W. D. Treadwell. Sweden: S. Arrhenius, S. Oden, The. Svedberg. Professor W. A. Noyes is acting as chairman of the committee to select American members of the conference, the other members being Professor Stieglitz, Professor Lewis and Dr. Whitney. SCIENTIFIC NOTES AND NEWS Av the annual meeting of the National Acad- emy of Sciences to be held at Washington from April 23 to 26, Dr. Hendrik Anton Lorentz, of the Rijks Universiteit, Leiden, will deliver the evening address on April 24, at the invitation SCIENCE [Vou. LV, No. 1423 of the Academy and of the Carnegie Institution of Washington. Tue general meeting of the American Philo- sophical Society will be held in Philadelphia on April 20, 21 and 22. At the reception on Friday evening, Dr. Vernon Kellogg, of the National Research Council, will speak on “The Power and Impotence of Man.” Proressor ALBERT Ernstern, of the Univer- sity of Berlin, delivered the first of a series of four lectures in Paris on the “Theory of Rela- tivity,” under the auspices of the Collége de France. Proressor A. C. Spwarp, professor of bot- any at the University of Cambridge, was elected president of the Geological Society of London at the annual general meeting. Dr. E. B. Poutton, Hope professor of zo- ology at the University of Oxford, was elected president of the British Association of Hcono- mic Entomologists at the annual meeting, held on February 24. Dr. B. H. Ransom, chief of the zoological division of the Bureau of Animal Industry, U. S. Department of Agriculture, has been elected a foreign corresponding member of the Royal Academy of Agriculture of Turin, Italy. Proressor Hersert M. Boyruston, of the Department of Metallurgy and Mining at the Case School of Applied Science, has been appointed on the Board of the Engineering Foundation for a term of three years as repre- sentative of the American Institute of Mining and Metallurgical Engineers. S. M. Kinter has been appointed manager of the research department of the Westinghouse Electric and Manufacturing Company, succeed- ing C. H. Skinner, who has been appointed as- sistant director of engineering in the same company. COLONEL JAMES MILLIKEN has been elected president of the Pittsburgh Testing Laboratory sueceeding George H. Clapp, who remains with the organization as a member of the board of directors. Dr. Bertranp E. Roperts has been appoint- ed epidemiologist of the State Department of APRIL 7, 1922] Health in the place of Dr. Edmund Boddy, who has resigned. Dr. Grorce P. DoNEHOO, a member of the American Association for the Advancement of Science, and secretary of the Pennsylvania His- torical Commission, has been appointed by Gov- ernor W. C. Sproul, state librarian and director of the Pennsylvania State Museum. Dr. ArtHur S. RHoaps, formerly assistant in forest pathology of the U. 8. Bureau of Plant Industry, and more recently of the office of Cereal Investigations and the office of Fruit Disease Investigations of the same bureau, has resigned to accept the position of pathologist at the Missouri State Fruit Experiment Sta- tion at Mountain Grove, Missouri. Dr. H. C. Bryant, economic ornithologist in the Museum of Vertebrate Zoology of the Uni- versity of California, will again be in charge of the Yosemite Free Nature Guide Service, during the summer of 1922. This service furnished by the National Park Service with the cooperation of the California Fish and Game Commission, aims, through the medium of lectures, field ex- eursions and office hours, to imterest and in- struct summer visitors in regard to the fauna and flora and the means to be taken to conserve it. During the season of 1921, over 31,000 persons heard lectures and campfire talks, and over 2,200 were given first-hand ac- quaintance with living things on field exeur- sions. At a meeting of the Board of Directors of the Gorgas Memorial Institute, at Wash- ington on April 1, announcement was made that the Panama Government had provided a site for the proposed Gorgas Institute of Tropical and Preventive Medicine. The site is adjacent to the St. Thomas Hospital, which contains laboratories and buildings and represents a cost of approximately $500,000. Dr. Richard Strong, professor of tropical medi- eines at Harvard University, has been elected director of the institute. The board also an- nounced the selection of the directors of the Gorgas School of Sanitation to be established at Tuscaloosa, Ala. They are: Dr. S. W. SCIENCE 371 Welch, of Alabama; Dr. Charles F. Dalton, of Vermont; Dr. A. J. Chesley, of Min- nesota; Dr. EK. G. Williams, of Virginia; Dr. Lloyd Noland, medical director of the Tennes- see Coal and Iron Company, and J. A. Laprince representing the United States Public Health Service. This board will meet at Tuscaloosa during the last week in May and arrange the courses. At that time they will also probably elect a faculty. A MEmoRIAL to the late Dr. Charles Basker- ville, professor of chemistry in the Col- lege of the City of New York, who died last January, is planned by the faculty and stud- ents of the college. It is proposed that the memorial will take one or more of the following forms: (1) The placing of a bronze tablet on the Chemistry Building, which is to be renamed Baskerville Hall. (2) The founding of a fund to provide for a medal to be called the Charles Baskerville Prize and to be awarded each year to the student doing the best work in chemistry. (3) The establishment of a scholarship to per- mit students who qualify to pursue courses in advanced chemistry. Subscriptions to the fund should be sent to Professor W. L. Prager of the college. WE learn of the death on March 19, ab Los Angeles, California, of Mrs. Martha Burton Williamson, long a prominent figure in that city, a contributor to the conchological litera- ture of the Pacific Coast, and the donor of a large collection of shells to the Los Angeles City Museum. She had been for many years vice-president of the Historical Society of Southern California. Dr. Brensamin Moors, Whitney professor of biochemistry in the University of Oxford, and formerly professor of physiology at Yale University, died on March 3, at the age of fifty-five years. Dr. Aucustus D. Waturr, professor of physiology and director of the physiological laboratory of the University of London, died on March 11, at the age of fifty-five years. THE death is announced from Paris, at the age of 84, of the dean of French mathema- 372 ticians, Camille Jordan, member of the Aca- démie des Sciences, professor emeritus at the Collége de France and the Ecole Polytechnique. He will be particularly remembered for his “Traité des substitutions,” which appeared in 1870 and is still to-day the great classie in the theory of finite groups for his “Traité d’Ana- lyse” and especially for his editorship of the Journal de Mathématiques in which he followed Resal in 1884, guiding its destinies until this very last year. He had the intense satisfac- tion of seeing it recently saved from extine- tion, most probably owing to the strong sup- port that it received from America. Proressor Dr. THEopor LirsiscH, late pro- fessor of mineralogy at the University of Ber- lin, died at his home in Berlin on February 9, after a protracted and painful illness. A correspondent writes: “Liebisch was born on April 29, 1852 and from about 1890 to 1900 he was professor of mineralogy at the Univer- sity of Gottingen. During this period there were many Americans studying for the doc- tor’s degree with their major in chemistry. Most of these men took mineralogy under Pro- fessor Liebisch as one of their minors, and it is hardly too much to say that he was one of the most highly respected and best loved pro- fessors in the university. He perhaps did more in a personal nature for the American students in those days than did any other professor. All Americans respected and admired him for his deep learning, his ability as a teacher, his inspiration for research work and his extremely kind and ever-thoughtful nature. About the year 1900 he was called to the University of Berlin, and served there until about 1920, when he retired from active work. He was the author of many books, his most important be- ing “Grundriss der Physikalischen Krystallo- graphie.” A Gzorcia ACADEMY OF SCIENCE was or- ganized on March 25 by a group of twenty- two scientific men, invited to the University of Georgia for that purpose. The delegates came from Emory University, the Georgia School of Technology, Mercer University, Oglethorpe University, the University of Georgia and the SCIENCE [Vou. LV, No. 1423 Georgia Experiment Station. Practically all phases of scientific endeavor were represented. Membership in the academy is to be a recogni- tion of noteworthy service to science or to the scientific development of the state, and the num- ber is limited to fifty. It is the aim of the academy to foster every means of encouraging scientific research, to develop the natural re- sources of the state, and to stimulate in the people a realization of the fact that their pros- perity depends very greatly on the scientific training of a large number of Georgia men. THe Sigma Xi research fellowships for the coming academic year will be awarded in May. Applications should be made to Professor Ed- ward Ellery, Union College Schenectady, N. Y. The awards are made for work in sciences other than physics and chemistry and to men and women who have already taken their doe- tor’s degree. Applications should be accom- panied by reprints of published articles and by reference to two or more persons competent to speak about the ability of the candidate in his or her special line. The minimum award is six- teen hundred dollars. Dr. Witiu1am Crocker, director of the Thompson Institute for Plant Research, ad- dressed the Brooklyn Institute of Arts and Sciences on March 25 on “The present outlook for plant research in Europe.” Dr. W. J. Humpureys, of the U. 8. Weather Bureau, recently lectured before the West Vir- ginia University Scientific Society on “Fogs and clouds.” UNIVERSITY AND EDUCATIONAL NOTES Ir is announced that the three million endow- ment fund for Wesleyan University has been oversubscribed by a hundred thousand dollars. Mr. Hamitron B. Tompxins has bequeathed the residue of his estate to Hamilton College, his alma mater, with a stipulation that $100,000 be set aside for the increase and support of the college library, this fund to be known as the Hamilton B. Tompkins Library Endowment Fund. Five thousand dollars is left to Wells College. Appin 7, 1922] Dr. Frank THIuy, professor of philosophy at Cornell University, and Professor Madison Bentley, professor of psychology in the Uni- versity of Illinois, will lecture during the sum- mer session of the University of California. Dr. Wiuuiam A. R. Tayior, now instructor in botany in the University of Pennsylvania, has been promoted to an assistant professor- ship. Mr. ArrHur Lee Drxon, M.A., F.R.S., fellow and tutor of Merton College, University of Oxford, has been appointed Waynflete pro- fessor of pure mathematics in succession to Professor E. B. Elliott, fellow of Magdalen, who has resigned. Mr. ArrHur Lapwortu, D.Se. (London), F.R.S., at present professor of organic chem- istry in the University of Manchester, has been appointed to the Sir Samuel Hall chair of chemistry and to the directorship of the chem- ical laboratories. DISCUSSION AND CORRESPOND- ENCE GENETICAL ANALYSIS AND THE THEORY OF NATURAL SELECTION In my Toronto address I lately referred to John Ray as the first who laid stress on the sterility of interspecific hybrids. I was then writing away from books and must apologise for this slip. The passage in the Historia Plantarum 1686, 1, pp. 40 and 42, that I had in mind is probably the first in which anything approaching a genetical definition of species is attempted. Ray there lays down the excel- lent principle that forms which, though differ- ing from each other, can be bred from seed of the same plant, should be regarded as of the same species. Not till the Linnean period, more than half a century later, did the cognate question of the sterility or fertility of inter- specific crosses assume prominence. Professor Osborn has expressed great vexa- tion at the tenor of my address. After con- sidering his remarks, I do not know that I can add much to what I have said. The diver- gence between the conceptions to which genet- ieal analysis introduces us and the doctrines SCIENCE 373 of which Professor Osborn has been so long a distinguished champion is indeed wide. Paleontological observations have served a useful purpose in delimiting the outline of evolution, but in discussing the physiological problem of interspecific relationship evidence of a more stringent character is now required; and a naturalist acquainted with genetical dis- coveries would be as reluctant to draw conelu- sions as to the specific relationship of a series of fossils as a chemist would be to pronounce on the nature of a series of unknown com- pounds from an inspection of them in a row of bottles. The central tenet of Darwinism that species are merely the culminations of varietal differences, such as we find contemporaneously oceurring, is not easily reconcilable with the new knowledge. It was my purpose once more to direct the attention of naturalists, espe- cially geneticists, to this deficiency in the evi- dence, by no means without hope that it may be supplied. Professor Osborn, in extenuation, suggests that my tongue ran away with me and that I could not have meant what I said. That de- fense, however, is not available, for I had taken the precaution which I understand he learned from Huxley, and I had prepared a written text. This, in all important passages, I fol- lowed verbatim, and it appears without serious modification in Science for January 20. I may even plead guilty to having spoken and written to the same effect on many previous oceasions, and Professor Osborn will find the theme developed in ‘Problems of Genetics” (New Haven, 1913, and in my presidential address to the British Association in Australia (1914). Marcu, 1922 W. Barreson A SUGGESTION TO MR. BRYAN I THINK most readers of Sctnncre must feel indebted to you as I do for reprinting W. J. Bryan’s attack on Evolution. It may be true that only the psychologists will be able to find in it data of value to their science but to them the importance of this contribution of Mr. Bryan’s must be large indeed. The rest of us welcome the diversion which it affords. A Don 374 Quixote of Mr. Bryan’s calibre only appears once or twice in a century and the opportunity to study in cold print the celebrated Nebras- kan’s proposal to resurrect the “special erea- tion of species’ myth must be appreciated by our scientific. brethren who are interested in studying the mysterious ways in which the human mind sometimes works when it ap- proaches subjects unfamiliar to it. My principal object in writing you is to suggest that Mr. Bryan should be invited to use the pages of Science to attack an even greater heresy than Evolution. Since Mr. Bryan still gets his biology from the Bible it appears to be a safe inference that he must draw his geography from the same source. Bible geography, or “flat geography” is, I am informed, taught nowadays only in the moun- tains of eastern Tennessee. Why should not our Bold Knight from Nebraska (or is it Florida?) aim his lance at the teachers of modern or “round” geography and admonish them to hark back to the geography of Joshua? This is perhaps a subject which has been over- looked by this eloquent defender of Biblical science. I can hardly believe it to be lack of courage which has led Mr. Bryan to attack the few and widely scattered teachers of evo- lution instead of the thousands of teachers of modern geography. Whatever the explanation of Mr. Bryan’s neglect to denounce the heresies to be found in the textbooks on geography may be, I beg to suggest that the heretical character of the modern teaching in geography should be brought to the notice of Mr. Bryan. Epwarp M. KinpLE CANADIAN GEOLOGICAL SURVEY THE WRITING OF POPULAR SCIENCE To tHE Epitor or Science: Both Dr. Al- fred H. Brooks! and Dr. Edwin E. Slosson* have recently called attention to the fact that relatively few popular scientific works are be- ing now written in this country; and the form- er expresses the opinion that there is to-day relatively less popular knowledge of science 1 Journal Wash. Acad. Science, 12: 73-115, 1922. 2 ScmENCE, 55: 241, 1922. SCIENCE [ Vou. LV, No. 1423 and less interest in its methods and advance- ment than there was a generation ago. This opinion will probably be generally accepted as correct. That it should be true in spite of the large amount of scientific work that has been, and is being done, and in spite of the serious attempts of scientific associations and other agencies to create a popular interest in science, indicates that it is high time for scientists to consider seriously themselves, science and thw public, in an endeavor to ascertain wherein the difficulty lies. Most scientists will agree with Dr. Brooks that the lack of popular knowledge of science is directly due to the form in which science is presented, and that “what is needed is the presentation of science in a form com- prehensible to the educated and thinking man.” But to secure such presentation, it is necessary to understand the public, the point of view of those we desire to reach, the mental background with which the science we present must be harmonized; to understand science and our- selves; to keep in mind what constitutes science; to have a clear idea of what we wish to give the public. Otherwise we are in danger of merely groping blindly, and of, perhaps often, prostituting the name of science. We all acknowledge that science is organized knowledge. That neither an isolated fact, nor an infinite number of isolated facts, is science; no matter how true and exact the facts may be. It is only when two or more facts are seen to be related, that science comes into exist- ence. Science does not consist of facts, but of recognized relations between facts. Science is essentially a mental phenomenon®. But are there not, only too often, offered under the guise of science mere isolated facts trimmed with sufficient allegory and super- ficial analogies to fill a respectable amount of space and to attract the layman’s attention? This is not science, but merely information— the raw material out of which science is made. 3 Since this was written’ Dr. F. L. Hoffman’s admirable vice-presidential address (ScIENcE, Mareh 10), entitled ‘‘The Organization of Knowledge’’ has come to my attention. In this, the essential distinction between mere facts and science is strongly emphasized. APRIL 7, 1922] It has no cultural value other than what the reader can supply by coordinating it with other information that he has aequired from other sources. Only by, and to the extent of, such coordination does the fact become scientific. Is it not here that the scientist needs to con- sider both himself and his reader? For him, this fact he offers has a wealth of associations, he sees it in its relations to numerous other facts; the mere fact that this particular fact is, has for him far-reaching implications; it is against such a rich and harmonious back- ground that he sees the fact. But with the layman it is far different; he can furnish but a meager background, often merely a dead black drop. The fact as presented with its allegory and analogy may appear to him very beautiful, or wonderful, or surprising, but it does not mean anything to him. Is it sur- prising that he does not enthuse over it? A person likes to feel that he is getting some- where. An article that establishes a recog- nized relationship between two or more facts meets this desire, and by the serious minded public would surely be received more favorably, ‘than one that merely retails information. But the choosing and presenting of a rela- tion between facts is difficult. The scientist is embarrassed by the complexity of the rela- tions that he recognizes; what portion of the vast web shall he choose? And having chosen, how can he supply the proper surroundings to give it in any fair degree its true signifi- cance when seen against the drab background that will be furnished by the reader? To sueceed, he must know how to present his facts and arguments so that they will fit into his reader’s experiences and habits of thought. He must be acquainted with his reader. Is it not here that the great difficulty les? The scientist of this country seldom has the leisure, and often has not the inclination, to become really acquainted with the experiences and the mental processes of the non-scientist. As a re- sult, he is unable to present his scientific knowl- edge in a form that is readily understandable by the layman. The remedy is to be found in a more intimate acquaintance of the scientific and the non- SCIENCE 375 In the en- deavor to secure such improved acquaintance, the scientist is called upon to take the initiative, and to do the most. He must cultivate the aec- quaintance of the non-scientist; must study scientific classes with one another. him; must show him, in a way that he can understand, what science really is; must make him see that scientific work dves not consist in merely collecting wonderful, interesting, or surprising facts and observations, nor. in in- venting useful or weird contrivances, but in ascertaining how facts are related to one an- other, so that he may be able to forecast with confidence the results that will follow from a given act, and conversely, may be able to speci- fy what set of acts will give a desired result. The non-scientist must be made to see that science does not consist in making inventions, but in furnishing the raw materials out of Onee get the army of non-scientists to understand these things, which inventions are made. and the securing of their interest in science and its advancement will cease to be a problem. The public ean learn what science is, only by being shown properly labeled examples of it. These must be understandable, but never- theless must be real and rigid science; and in no case should the reader be relieved of all necessity for thinking. Among the types of subjects that appear to be suited to this pur- pose are: (1) Accounts of discoveries, in which the reason for undertaking the work and the main steps in the establishing of the conclusions are given. (2) Accounts of experimental re- search, or of precise measurement, in which the line of reasoning, illustrations of check ex- periments, ete., are given. (3) Accounts of experiments designed to established suspected relationships between observed facts. Un- suecessful experiments should not be ignored. (4) Accounts of the establishing of relation- ships between observed facts by purely in- ductive methods. Tf we would avoid giving the public a false idea of what science really is, let us discour- age the practice of placing the label “science” on presentations of mere isolated facts, and let us clearly inform the public, by word as well as by example, that science consists in the es- 376 tablishing of relations, not in the cataloguing of facts. N. E. Dorsey 404 MaryYLAND BUILDING, WasuHinetTon, D. C. QUOTATIONS THE EARNING POWER OF RESEARCH A FEW years ago the X-ray tube was an er- ratic apparatus not in any very general use. The research laboratory of the General Electric Company realized that there was a possibility of utilizing pure electronic emission from a hot filament to produce controllable X-rays in a perfect vacuum. They conducted extensive re- search upon such devices as then existed, and as a result the tungsten target took the place of platinum in the standard gas tube of that day. Research had also to be applied before the laboratory learned positively that available electrons already existed and that there was a possibility of controlling them, as, for example, focusing them on a target. The research has been continued, until today practically all the X-ray tubes of the country are made by the company in accordance with the discoveries of the man whose name the tubes bear. The Coolidge tube is also used abroad almost to the exclusion of other types. These remarkable results have been achieved through very care- ful, accurate, and often discouraging studies of electric phenomena in high vacua, with very The perfection of the tube is the nucleus of an annual business, including pure materials. accessories and generating apparatus used in X-ray work, of from five to ten million dollars a year. The benefit cannot be measured wholly in monetary return, for everyone is familiar with the humanitarian benefits. Our oldest industries have been the most re- luctant in establishing research laboratories. But the experience of a leader may guide the entire industry. Some years ago the Ward Baking Company established a fellowship at the Mellon Institute. The research soon brought results and the application of a more balanced yeast nutrient to the dough gave better fermentation and better bread. It was discovered that the baker can grow yeast in the dough and control fermentation wastes. This SCIENCE [Vou. LV, No. 1423 conservation amounts to 2 per cent of the flour, 15 per cent of the sugar, and sufficient yeast to make the total saving 45 cents net per bar- rel of flour used. It is estimated that this process saves American, Canadian, and Brit- ish bakers not less than $40,000 per day, with- out detriment to the quality of the bread. In 1915 a control laboratory was installed with one chemist. Today there are a variety of control laboratories with twenty-five tech- nical workers. A chemist has frequently saved two months’ salary for his employer with a report on samples from a single carload of butter. The control which has been established as a result of research upon the raw materials makes possible uniformity in the finished product. Time, temperature, and other fac- tors which influence fermentation have been established, and since no two carloads of flour are alike the data are vital in determining how fermentation must be varied to secure uniform- ity. The study of enzymes, proteins, colloids, yeasts, bacteria, and nutrient value is pointing the way to still better bread, higher nutritive values, economy in production, and the eleva- tion of the entire industry. It is no wonder that during these days of industrial depression this pioneer in research as applied to baking has increased the number of its scientific workers. Results continue to justify the increase.—The Journal of Industrial and Engineering Chem- istry. SCIENTIFIC BOOKS A Monograph of the Existing Crinoids. Volume 1. The Comatulids. Part 2. By AvusTIN Hoparr Cuark, Curator, Division of Echino- derms, United States National Museum. Bul- letin 82. Washington, 1921. 4 to Pp. xxvi -- 795; with 949 text-figures and 57 plates. THE first part of Clark’s monograph appeared in 1915., ‘The present brochure, fully twice the size of its predecessor, constitutes the con- cluding part of the general introduction to The Comatulids. The systematic description of the eroup will follow. The major part of this work has already been completed and much of it has appeared in a series of monographs and 1 Reviewed in Science, N. 8., Vol. XLII, No. 1080, p. 342, Sept. 10, 1915, by Frank Springer. APRIL 7, 1932] shorter papers which have supplied the- first adequate account of the free ecrinoids. It has been no mean task, for when Mr. Clark tackled the problem, the classification of the comatulids was in a state of hopeless confusion. The reso- lution of this chaos into a system was a brilliant piece of analysis and construction, and consti- tutes a notable achievement in the field of ani- mal taxonomy. The present volume contains an enormous amount of detail, and maintains the high standard of Part 1. It has a wealth of illustration—no less than 1,364 figures, the greater part drawn by the author, as there are few photographs. Such figures as have been taken from previous authors have in almost all cases been retouched by Mr. Clark to bring out points previously overlooked or misinterpreted. Nine hundred forty-nine drawings appear in the text. What might be termed the background of the work has been stated by Mr. Frank Springer in his review of Part 1, and need not therefore be recounted here. The present volume con- tains a very large amount of entirely new and original matter. It begins by taking up the description of the radials of the comatulids at the point at which it was left at the end of Part 1. The articular faces of the radials of 52 species are described in detail from dissec- tions preserved in the collection of the National Museum and reference is made to the 20 de- scribed more or less satisfactorily by previous authors. The whole subject of the structure, relationships, physiology and homologies of the socalled post-radial structures (arms and pin- nules) is exhaustively treated. All of this matter is original and is based upon specimens in the National Museum. The perisomic plates, or those developed within and entirely confined to the ventral surface, come in for detailed de- scription for the first time, the subject being handled in an entirely new way; and the side- plates and covering-plates of the pinnules of 203 species in the National Museum collection are also treated. A complete and detailed account of the an- atomy, embryology, and regeneration of the comatulids is given. There is at present no single source from which this information can SCIENCE 377 be derived, as it is widely scattered through a great number of usually short papers in various languages. The spawning season of 24 species is given; previously that of only 4 species was known. The pentacrinoid young of 28 species are de- scribed and the first comparative account of the pentacrinoids is given. A considerable amount of information is as- sembled concerning the habits, reactions to various stimuli and food, concerning which up to the present there has been no adequate source of information. All of the numerous parasites and commen- sals on the crinodis are listed and when neces- sary for comparative purposes, many of those occurring on other echinoderms. Parasitism and commensalism among marine invertebrates has been greatly neglected and this section therefore forms an important contribution to the subject. Incidentally, a detailed account of the myzostomes, almost exclusively parasitic on the crinoids, is given, together with a com- plete list of all the known species. No other list exists at present. The coloring of the comatulids, remarkable for its brillianey and diversity, is treated in detail for the first time, the color of 160 species, in many eases from the author’s own notes taken at sea, being given. The pigment is described and the chemical composition of the skeleton is discussed. Such, in bare outline, are the contents of an extraordinarily well conceived and thoroughly executed treatise, upon the publication of which the author as well as the authorities of the National Museum.are to be congratulated, for the work will always remain a point of departure for future investigation. The press-work of this volume is excellent and an improvement over that of Part 1. The half-rag paper is also a decided advance, al- though really too thin to carry the larger text figures, since the printing on the reverse shows through. A few copies of such fundamental memoirs as the present should be printed upon heavy, full-rag paper, or better still upon linen, and deposited in, say, half a dozen “strategie” libraries of the world. Too many of our basic 378 monographs are printed upon paper which will be relatively short-lived. W. K. FISHER. SPECIAL ARTICLES A NEW VARIETY OF BARLEY WITH STRI- KING CHARACTERISTICS Tue new variety of barley, which the writer has provisionally called Mack’s Branched bar- ley, has never been recorded in literature here- tofore. It was discovered by Mr. J. M. Mack, of Fallbrook, California, in a wheat field mixed with much barley. Specimens of the new form were sent to the University of California in 1921 for further investigation; and the writer has been much interested in it in connection with his genetic studies in barley. It is a six row barley possessing the following character- istics: 1. An Increase in the Number of Nodes accompanied by an irregular Shortening of Internodes. The number of nodes in ordinary varieties of barley varies from three to seven, the uppermost internode below the spike be- ing always the longest; while Mack’s Branched barley has from 10 to 30 nodes on each tiller without elongation of the uppermost internode. The shortening of the internodes and the in- crease in the number of nodes make the straw much stiffer; and indeed the variety would be most resistant to lodging if not for the fact that too heavy a weight is carried at the upper portion as a result of branching. 2. The capacity to Branch at Any Node. Tillers arise from the first node at the bottom in ordinary cultivated barleys. Wessling bar- ley has a branched spike, but the branching is confined to the head. No form has been re- corded heretofore as branching freely at any node and also capable of secondary and terti- ary branching, which is a characteristic of Mack’s Branched barley. 3. The capacity to Produce Roots at any Node. Although it is possible to induce some of the common varieties of barley to produce roots at nodes near the base, the setting of 1 Phil. Mag., s. 5, Vol. 24, p. 87. 2 Phil Mag., s. 5, Vol. 24, p. 423. SCIENCE [Vou. LV, No. 1423 roots at the upper nodes when covered with soil is quite a unique character, possessed by this form alone. 4, The Capabilitay of Vegetative Propaga- tion. The fact that this variety of barley is capable of branching and rooting at every node suggested to the writer the possibility of vegi- tative propagation. Abundant roots were se- cured by the layerage method in a period of 2 weeks in the open field in January. Cutting off a tiller and transplanting it in a pot in the greenhouse has resulted in slower recovery than in the case of mount layerage; but never- theless a main root has arisen from a node near the place of cutting and hence it is reasonably sure that the cutting will succeed as a separate plant. The possibility of vegetative propagation of this cereal is of considerable scientific interest, if it is not yet of practical agricultural interest. This new form is of appreciable value especi- ally to those interested in genetic studies of barley, because it makes possible the continuous propagation of the heterozygote. This will make backerossing in barley as a means of genetic investigation more practical, although it is still doubtful whether backcrossing can be extensively employed in this cereal, the pro- cess of artificial fertilization being so tedious in contrast with the ease of growing self-fer- tilizing hybrid generations. Although the new form is apparently of no agricultural value by itself, yet the branching and cold resistant characters may be utilized to advantage by hybridization with some of the commoner types of cultivated barley. Nothing is yet known concerning the origin of this interesting form, as it was discovered in a mixed field. All that we know is that its striking characteristics are constant and breed true under the different environmental con- ditions to which it has been subjected. The writer plans to make a number of crosses be- tween this form and several of the cultivated varieties in the coming spring, as this interest- ing barley certainly deserves an intensive genetic study. Kwen 8. Hor UNIVERSITY OF CALIFORNIA APRIL 7, 1922] THE FEDERATION OF AMERICAN SOCIETIES FOR EXPERIMENTAL BIOLOGY Tue Federation of American Societies for Experimental Biology, which comprises the American Physiological Society, the American Society of Biological Chemists, Inc., the Amer- ican Society for Pharmacology and Experi- mental Therapeutics, and the American Society for Experimental Pathology, met for their annual scientific program, December 28-30, 1921, under the auspices of Yale University. Two joint scientific sessions were held. The first joint session was called at 9:30 on the morning of December 28 under the presidency of Dr. J. J. R. Macleod of the Physiological Society. Twelve scientific papers representa- tive of the research work of the four societies were presented and discussed at this session. An equally strong joint session was held at the close of the third day, beginning at two o’clock on December 30 and consisting of eleven papers. Sessions of the individual societies filled the remaining four periods of the meet- ing. The executive committee of the Federation is composed of the presidents and secretaries of the four constituent societies as follows: J. J. R. Macleod, executive chairman; C. W. Greene, secretary; D. D. Van Slyke, C. W. Ed- munds, F. G. Novy, V. C. Myers, E. D. Brown and Wade H. Bown. The first executive com- mittee meeting was called at 4:30 p.m., Decem- ber 27, at which time the following business was transacted. The report of the treasurer of the Information Service Fund, Dr. Joseph Erlanger, was presented showing a net balance of $312.34. The secretary of the Information Service presented the annual report showing progress during the year. This appointment service undertakes to call to the attention of universities and scientifie institutions and others the availability of scientists in the dif- ferent technical lines represented by the soci- eties. The late Dr. S. J. Meltzer, who keenly appreciated the difficulties confronting the young men preparing in science in the way of securing information of openings in _ their lines, and the equal difficulty met by institu- SCIENCE 379 tions in finding men of scientific preparation and fitness in particular lines, contributed the original fund to meet the expenses of this activity. It is the hope of the Federation that increasing use of this institution will be made through the secretary, Professor E. D. Brown, of the University of Minnesota. The problem of correlation of overlapping programs as between the Federation and the American Association for the Advancement of Science, together with the desirability of hold- ing periodical joint meetings, was presented and discussed. Such cooperation was favored by the Federation. Informal discussion was had of the necessity of the appointment of a permanent secretary to care for the increasing general business of the Federation. This was referred to the incoming executive committee. The most important act of the Federation was the presentation and discussion of a reso- lution calling attention to the decreasing sup- ply of young men entering the pre-clinical medical sciences. The general discussion tend- ed to show that aside from the effects of recon- struction activities, there are certain special causes operating to deter young men from choosing the biological sciences even though attracted by their intrinsic interest. It was recognized that there is always the need of giant personalities and great teachers who stimulate and lead young men by an attractive presentation of the science itself. However, the financial advantages and the secondary rewards of a professional career too generally outstrip the financial income and perquisites of research and teaching in the biological sciences. Scientific investigators do not expect great financial returns but they do have a right to sufficient income from their activities to avail themselves of the usual jour- nals, meetings, and other necessary instru- ments for scientific work. The standards of maintenance of the. social and family position of the scientist and the education of his chil- dren are well defined. Many teachers hesitate to urge upon their brilliant students careers which do not of themselves guarantee this degree of support. The net result is that it takes an idealistic temperament with a cer- 380 tain amount of utopianism to adopt as a life work scientific professions which involve so much of sacrifice to person and family. In recent years also there seems to be a tendency in educational and scientific institu- tions to break away from the recognized paths blazed by the trained and conservative leader- ship of those who have made the present standing of the basal medical sciences in America. It is admitted that academic ruts may become established which may possibly best be eradicated now and then by drastic innovations. But the question is raised whether the rewards of promotion in rank and of ealls to institutions of recognized leadership have not too often been made on the basis of some special demand which for the time being has swayed the control in these institutions. The break in morale is the same in science as would occur in business or military organizations when awards fall too frequently outside the groups of seniority in leadership and scientific attainment. The executive committee after confirmation by the constituent societies approved and passed the following resolution with instruction that the same should be published and by other means called to the attention of administrators and others responsible for scientifie appoint- ments in American institutions. RESOLUTION OF THE FEDERATION OF AMERICAN SOCIETIES FOR EXPERIMENTAL BIOLOGY Adopted December 30, 1921 The Federation of American Societies for Ex- perimental Biology, comprising the American Physiological Society, the American Society of Biological Chemists, Inc., the American Society for Pharmacology and Experimental Therapeutics, and the American Society for Experimental Path- ology, as the official body representing workers in these various fields, feels that it is its duty to call the attention of the authorities of our univer- sities and endowed foundations, of the medical profession and others, to the grave situation now existing in respect to recruits in these branches of biological and medical science. 1. A country-wide investigation, recently pub- lished, has revealed that the number of young men of ability entering on careers in the sciences basal to medicine and surgery is inadequate to fill the available positions. SCIENCE [Vou. LV, No. 1423 2. This condition is due to two factors: a. The number of positions in the preclinical sciences in universities and other institutions has increased more rapidly than the number of men entering these fields; and b. The improvements and increased opportuni- ties for laboratory investigation in clinical sub- jects, together with the greater remuneration in clinical departments, have made such positions relatively more attractive. In response to the urgent demand for men of scientific training to fill clinical posts, many are becoming clinicians who under former conditions would have remained in the preclinical sciences. With the increasing growth of scientific medicine it becomes evident that the only clinical teachers and investigators competent to carry forward modern medicine are those who have had sound training and experience in one or more preclinical sciences and have later acquired clinical skill and judgment. 3. The great contributions to knowledge and human welfare which the sciences represented in this Federation will make, is to be determined by the number of able workers in these sciences. An adequate application of physical sciences to biological and medical problems will come only from the broadest development of physiology, biochemistry, pharmacology and pathology; and the aid of these sciences in the progress of clinical medicine will largely depend upon the ability of these departments in our universities to supply the basic training to those who later enter upon clinical work. They must therefore furnish the recruits both for their own laboratories and for the clinics; failure to do so will prevent the progress now underway. The Federation submits these facts to the thoughtful consideration of university authorities, and strongly recommends that immediate efforts be undertaken to improve the status and facilities of the basal medical sciences, so as to increase the number and ability of the recruits drawn to these sciences. The cordial invitation of the University of Toronto to hold the next annual meeting of the Federation in the halls of that institution was accepted and it was ordered that the annual meeting for 1922 be called at the University of Toronto, Toronto, Canada, December 28-30, 1922. Cuas. W. GREENE, Secretary of the Executive Committee NEWISERIESH OUR ODL | ti Mos a SERIES 99 SINGLE Coprss, 15 Cts. Vou. LV, No. 1424 Fray, Aran 14, 192 ANNUAL SUBSCRIPTION, $6.00 For the Science and Medical Library SCHAEFFER. The Nose, Paranasal Sinuses, Nasolacrimal Passageways And Olfactory Organ In Man “His aim has been to bring to the profession the exact embryology, infant and adult anatomy of a part of the body which seldom has been studied carefully. His research covers a great many years, during which time he has analyzed a number of specimens. The statements in the book are the absolute truth of anatomical observation and not the guess-work of the average specialist who founds his knowledge on clinical facts.”.—American Journal of Surgery. 204 Illustrations, 18 in colors. Cloth, $10.00. By J. Parsons ScHarrrer, M. D., Ph.D., Professor of Anatomy and Director of Daniel Baugh Institute of Anatomy, Jefferson Medical College, Philadelphia. LEE. The Microtomist’s Wade Mecum “A most complete and stimulating book of reference for the research worker. It contains a great deal of new material and recent CEE 8th Edition. Cloth, $6.50. By ArtuHur Bottes Lee, Hon. F.C. M. s. Edited by J. B. Garensy, D.Sc. 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Quarto, 458 pp., I pl..........-- $7.00 The publications of the Institution now number over 450 vol- umes, the subjects including Anatomy, Archeology, Astronomy, Botany, Chemistry, Climatology, Economics and Sociology, Em- bryology, Engineering, Folk-Lore, Geology, History, International Law, Literature, Mathematics, Medicine, Nutrition, Paleontology, Philology, Physics, Plant Ecology, Stereochemistry, Terrestrial Magnetism, Zoology. Classificd and descriptive lists will be sent postpaid on application. Genetics, All communications should be addressed to CARNEGIE INSTITUTION OF WASHINGTON, Washington, D, C. SCIENC A Weekly Journal devoted to the Advancement ef Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS 11 Liberty St., Utica, N. Y. Garrison, N. Y, New York City: Grand Central Terminal Single Copies, 15 Cts. Annual Subscription, $6.00 Entered as second-class matter January 21, 1922, at the Post Office at Utica, N. Y.. under the Act of March 3, 1879. Vou. LV Apri 14, 1922 No. 1424 Psychology as a Career: PROFESSOR C. E. SEASHORE 381 Horticulture as a Science: Dr. Henry D. IER OOKER 5) se) Rsceasos desu tins res ee SA eae cs 384 A Suggestion as to Method of Publication of Scientific Papers: PRoFESSoR W. J. Crozier 388 Charles W. Waidner: Dr. S. W. Srrarron.... 389 Scientific Events: Vienna Institute for Ice Age Research; The All-Russian Congress of Zoologists in Petrograd; Association of Geologists and Naturalists in Peking and Vicinity; The Mendel Centennial; Colloid Chemistry at the University of Wisconsin; Yale Univer- sity and Dr. Chittenden. Scientific Notes and News........... ... 894 University and Educational Notes.................... 397 Discussion and Correspondence: Osborn versus Bateson on Evolution: Pro- FESSOR WILLIAM E. Ritrer. Further Con- sideration of the Size of Vein-islets of Leaves as an Age Determinant: Dr. Harris M. Benepict. Lhe Metric System: FrRrEp- ERICK A. HaAusEY, HENRY PavuL BuscH. Concerning the Article, ‘‘A New Graphic Analytic Method’’: PrRorrssor Wm. H. Rorever and Proressor E. H. HEpDRICE........ 398 Special Articles: The Properties of Elements and Salts as related to the Dimensions of Atoms and Tons: Dr: \GrorGe UL. CLARKL 22s 22 401 The American Association for the Advance- ment of Science: Section L (1)—The History of Science: Dr. FREDERICK E. BrascH PSYCHOLOGY AS A CAREER? PsycHo.oey is the science which deals with the nature of human and animal behavior and with the direction of its forces from the point of view of mental life. There are as many words in the dictionary with mental connotation as with physical. There are as many mental phenomena subject to scientific study as material phenomena. The mental sciences may in the near future have as many branches and embrace as large scope as the material sciences. As out of the pure physical sciences have come engineering, medicine, architecture, and other forms of applied material sciences, so in the near future will come the applications of psychology to education, medicine, industry, art, and all other varieties of human endeavor in which scientific knowledge of human or ani- mal behavior can be made of practical value. The opportunities for a career in mental science will, in the near future, be as numerous as in the material sciences. No science is more intimately and practically related to the conduct of human life than is psychology. It is, indeed, concerned primarily with those facts and principles of experience and action upon which our understanding of ourselves as conscious beings and our ability to understand and sympathize with our fellows depend. PurE PsycHOLOGY As now taught in the best colleges and uni- versities, psychology is presented in several fairly differentiated courses. Ordinarily there is one general introductory course of one year furnishing a general survey of the subject from 1 This article is one in a series published from the various divisions in the National Research Council under the general topic, ‘‘Opportunities for a Career in Science.’’ 382 varied points of view. Beyond this, specialized courses are offered. Technical laboratory courses in experimental psychology furnish training in the fundamen- tal principles of scientific procedure in observ- ation, measurement, statistics, interpretation and formulation of the laws of mental phe- nomena. This course furnishes a technique which should be employed in all branches of psychology regarded as scientific or experi- mental. Physiological psychology usually reviews the facts about the nervous system as taught in neurology for the purpose of tracing the phys- ical basis of mental life and showing the re- lation between the mental and the neural. Genetic psychology is divided into two parts; mental evolution dealing with the training and development of mental life in the species, and mental development dealing with the unfold- ing of mental life and the integration of be- havior in the life of the individual. Within this field lies also the problem of the inherit- ance of mental traits. Abnormal psychology deals, with mental phenomena that are strange and irregular de- viations from the normal but not strictly re- garded as disease; such as hypnotism, medium- ship, and alterations of personality. Animal psychology presents a field of great interest in itself; but it is of special signifi- cance in that it throws light upon human life, particularly in the study of the simplest and the highest forms of animal behavior. Social psychology treats of the social aspects of mental life and often blends into other sub- jects, such as anthropology, social origins, so- cial ethics, social welfare, and eugenics. Some- times race psychology, or the psychology of peoples, is differentiated from social psychol- ogy. Individual psychology is perhaps the most conspicuous field of interest at the present time as it is the foundation for “human engineer- ing” in all its forms of selection and guidance of individuals as well as for an intimate and ac- curate account of character or individuality of a person. It has recently gained great impetus through the development of so-called mental tests. SCIENCE [Vou. LV, No. 1424 Statistical psychology is a basic requirement for mental measurement, particularly as em- ployed in mental and physical testing and in psychology applied to education, commerce, sociology, and vital statistics. Psycho-analysis has come in from the medi- cal side as a unique and new approach to, the study of mental disorders such as hysteria, morbid fear, aversions, and suppressed desires, but also throws much light upon the nature ot normal mental life. This is yet a polemic field in which we find great enthusiasms and an- tagonisms in contest. Behaviorism is a purely objective study of human and animal life without reference to the testimony of consciousness. These items may suffice to indicate roughly the principal points of view that the student entering upon a career in psychology must ac- quaint himself with as each contributes a dis- tinet element to the conception of psychology as a whole. APPLIED PSYCHOLOGY Psychiatry, as the science and art of the treatment of mental diseases, is the only fully specialized profession which may be regarded as applied psychology, although in many re- spects it has developed independently and has contributed much to normal psychology. But aside from psychiatry proper, there are many specialties in medicine in which expert know- ledge of the human mind and behavior is fun- damental; as in the care and treatment of children, and the mental treatment of all types of defectives and delinquents. Preventive medicine, public health education, and sanita- tion are built largely around psychology as the science of human behavior. Edueational psychology presents numerous phases. Thus we have the psychology of the course of study, of the child, of the adolescent, of the learning process, of discipline, of par- ticular types of training, and of special classes. The science and art of education is primarily applied psychology. The psychology of business and industry appears in several large and distinct fields; such as the psychology of advertising, of sales- manship, of personnel, and of vocational selee- tion and various types of efficiency activities. APRIL 14, 1922] Legal psychology appears in two groups of interest; first, the psychology of evidence or testimony and pleading; and second, the psy- chology of crime, delinquency, defective men- tality, penology, dependency, correction, and special types of mental deviation. Applied social psychology takes such forms as the psychology of social amelioration, eu- genics, race betterment, child welfare, commun- ity welfare, recreation and amusement, and vo- cational and avocational guidance. The psychology of art appears in the psy- chology of music, of graphic and plastic arts, and of literature, dealing in each case with the psychology of art principles, the psychology of the individual, and the psychology of train- ing for the art. The psychology of religion is applied mainly in the interpretation of religion and religious life, and in the organization of character build- ing and religious education. The above rubrics should not be regarded as an adequate classification of the fields of pure and applied psychology; they are listed merely as a suggestion for the purpose of showing the scope of the sciences and the types of outlets for a career. FITNESS FOR A CAREER IN PSYCHOLOGY The requirements for a career in psychology are in general the same as for other sciences; and psychology presents a wide range of out- lets through particular types of human interest. In determining whether or not the student is qualified for a career in science, he might make use of a little device in applied psychology as illustrated in the following rating scale: ANALYZED RATING OF FITNESS FOR A SCIENTIFIC CAREER 1. Reasoning power: capacity for solving prob- lems, both deductive and inductive. 2. Originality: creative imagination, brilliancy, planful initiative and fertility of rational ideas. 3. Memory: extensive, logical, serviceable, and ready command of facts. 4, Alertness: quick, incisive, and responsive ob- servation, thought and feeling. 5. Accuracy: precise, keen, regular and reliable observation, thought and feeling. 6. Application: power of concentration, sus- SCIENCE high or low in all. 383 tained attention, persistence, and well-regulated effort. 7. Cooperation: capacity for intellectual com- panionship, team work and leadership. 8. Moral attitude: intellectual honesty, whole- some moral standards, ideals and influences. 9. Health: nervous stability, physique, vitality, and endurance. 10. Zeal for investigation: deep interest in and craving for original and creative work. Let the student rate himself and then ask three or more persons whom he regards as most com- petent and who know him well to rate him in- dependently. Record the rating on a scale of 1-100 in which 1 represents the poorest exam- ple of this trait, and 100 the best that the per- son rating has ever observed in college students. College students, as a selected class, then be- come the “measuring scale.” These grades may be grouped as follows: 1 to 10 very poor; 11 to 30 poor; 31 to 50 low average; 51 to 70 high average; 71 to 90 ex- cellent; and 91 to 100 superior. These ratings will differ, but the very dif- ferences may throw significant light on the situation. For example, on “originality” the professor of literature may rate an individual low on the basis of observed work in poetry; whereas the chemist may rate him high on the basis of observed work in science. These rep- resent two types of originality; or one person rating may have encountered the flashy fertil- ity of ideas, whereas another may have ob- served a planful and persistent initiative, both of which represent originality, but of different types. For this reason the ratings on a given trait should not be aver- aged but analyzed. The student should seek a full and frank discussion of the grounds for each rating as this will analyze the situation further and throw important light on the na- ture of his character and capacities. Nor should the ratings on the ten points ever be averaged. A man may be very high in one capacity and low in another and such differ- ences are significant; but an average of them would be misleading. No person is uniformly These traits are not of equal value; some traits are more essential for one type of career than for another. 384 In general we may say that those persons who rank above 50 in the most essential traits give promise of achievement in a career in psychology. Natural interest is another factor of which we should take account. A student seeking a career in psychology may have the opportunity of following his natural bent for interest in pure science or its applications to the eduea- tional, social, ethical, medical, artistic, and other fields of human interest in which he may find his natural bent. TRAINING The study of psychology is usually begun in the second year in college; whereas many other subjects are begun in the high school or in the freshman year. As a result, it usually becomes a more advanced subject and there is more necessity for carrying it into graduate study. Most standard colleges and universities now offer good introductory courses in the subject, but beyond the elementary work, the student should seek institutions in which the particu- lar phase of psychology that he desires to pur- sue is most adequately represented. The best is none too good for one who desires to special- ize. In selecting, let the student choose, not on the basis of size of institution, but with ref- erence to the men who are recognized as most worth while in a particular specialty. As a prerequisite to a career in psychology, it is desirable that one should have command of French and German as a large portion of the literature on the subject is in these languages. He should also have pursued elementary courses in mathematics, biology, and physics. Other college subjects may be carried to ad- vantage with, or in sequence to, an elementary course in psychology. There is now a movement on foot to provide for the certification of psychologists. Such cer- tification will be based on certain types of courses, usually covering about three years of graduate work, and will entitle the psychologist to practice within his field of specialization. Legislation covering such licensing is now be- ing passed by dfferent states. Psychology is a new science. In seeking ad- vice, only those who are conversant with eur- SCIENCE [ Vou. LV, No. 1424 rent literature and present movements in the subject should be consulted. TYPES OF CAREER There are at present four distinct types of outlet : Teachers of Psychology—The nature of this work and its opportunities are perhaps best known. Scientific Research—The coming in of ex- perimental psychology has epened up most fas- cinating new fields of investigation and many agencies furnish opportunity for a career as original investigator. The leading universities usually encourage this in connection with some teaching; but there are opportunities in univer- sities, scientific foundations, surveys, and pri- vately supported enterprises for persons who are unusually qualified for this type of work. Specialists and Consulting Psychologists— Here the opportunities are most varied and new fields are opening rapidly as a result of re- search in each of the branches of applied psychology. Technicians—All the specialists require tech- nicians of various kinds as assistants. Most of these positions are, however, used as step- ping-stones or apprenticeships in the gaining of experience for independent work. Highly qualified advanced students can often find scholarships, fellowships, assistantships, and other financial provisions, given theoreti- cally in recognition of some type of apprentice- ship to graduate students. The remunerations open to persons who seek a career in psychol- ogy vary so much that figures would not be significant. In general, they depend upon the natural ability, the degree of training, and successful specialization. C. E. SEASHORE, DIVISION OF ANTHROPOLOGY AND PsycHOLoGy, NaTIONAL RESEARCH CoUNCIL HORTICULTURE AS A SCIENCE! Lixe most applied sciences, horticulture has evolved by very slow degrees from an art, gov- erned by rules justified by experience, to a 1 Read before the Association of Southern Agri- tultural Workers, Atlanta, Georgia, February 21, 1922 Aprit 14, 1922 science based on laws or principles of universal applicability. The term “applied science” would seem to connote that these laws or principles are ascertained first and that they are then applied to specific conditions, but as a rule the applications are known and are practiced, having been hit upon by empirical means and the first function of an applied science is usually to “explain” them by dis- covering the principles involved. When a considerable number of principles have be- come established in this way, new applications for them are found and the applied science becomes in effect what its name implies. A large part of the experimental work in horticulture has been conducted with the object of devising new rules and of ascertaining new facts of an empirical nature. More recently, however, considerable effort has been made to find principles of more or less universal ap- plicability and this has been accomplished by a study of the fundamental factors determining plant growth and productivity. Though many valuable practices have not yet received scientific elucidation and though much good work remains to be done in the way of discov- ering new rules, a large body of well estab- lished principles has been accumulated and successful practice depends to an ever increas- ing degree on their recognition. A comprehensive investigation of almost any horticultural problem involves much the same succession of stages as has been outlined for the development of the science; (1) The field for investigation is usually explored by ex- perimental work of an empirical nature. (2) This is followed by scientific study to determine laws or principles. (3) This in turn is fol- lowed by more experimentation to test the feasibility of applying to particular conditions the principles that have been discovered. It seems customary to extol the scientific study which aims to formulate laws and to dignify it by some such appellation as “fundamental re- search.” By implication, the attendant phases of investigation seem to be deprecated on the ground that they are largely empirical. How- ever, this invidious distinction is unwarranted, as every investigator learns sooner or later, for SCIENCE 385 these three aspects of investigation are like three links in a chain and progress in horti- culture depends on their parallel development. Principles are of little value to the horticultur- ist if they cannot be applied, just as a collec- tion of experimental data is of small import until it receives interpretation. The strictly scientific aspect of horticulture is closely allied to botany and it is diffieult to state wherein the distinction between the two lies. It is largely a difference in emphasis, since the horticulturist is interested only in those phases of botany that may be applied to his specific purposes. Nevertheless, the de- velopment of horticulture has followed closely in the steps of botany. During the last century the attention of most botanists was directed to morphology and taxonomy, a tendency reflected in the advances made by horticulturists in the subject of pollination and fruit setting and in the development and description of varieties. At present these subjects are better rounded and more nearly complete in their major as- pects than almost any other phase of horticul- ture. Now that plant physiology is in ascen- dency, more rapid progress is seen in the nu- tritional problems of hortieulture—in fruit bud differentiation, in pruning and in fertilizer treatments. The dependence of horticultural science not only on botany but on other sciences as well may be illustrated by reference to recent work on the so-called Hardiness Problem. Although this has engaged the attention of both horticul- turists and botanists for many years, until lately little was accomplished other than a sub- stantial verification of the Laws of Tempera- ture formulated by De Candolle nearly a cen- tury ago. Investigators were still faced with the seemingly contradictory facts that death from low temperature is due to loss of water from the cells by ice formation in the intercel- lular spaces and that nevertheless hardy plants usually contain less water than tender plants. What seems to be a satisfactory solution of this problem was made possible by some chemical investigations of Foote and Saxton at Yale University. This work showed that water may exist in different forms, and that 386 the water held by colloids possesses properties different from those of “free water,’ particu- larly with regard to the temperature at which it freezes. This work suggested to Bouyoucos of the Michigan Agricultural College a classi- fication of soil water into “free” water, which freezes at 0° C. or slightly below, colloidally adsorbed water which freezes at temperatures from a few degrees below zero down to -78°C., and combined water, which freezes only at temperatures below -78°C. This classification was apphed by McCool and Millar to the water of plant tissues. The work of these investigat- ors suggested an explanation of the greater tenderness of plant tissue with the higher water content. If hardiness depended not on the total water content, but on the content of col- loidally adsorbed water which does not freeze at ordinary freezing temperatures, then a plant tissue might contain any amount of free water and still be tender, while a relatively small amount of water in the adsorbed condition would impart a considerable degree of hardi- ness. Recent investigations at the University of Missouri have shown that these surmises are correct, at least for some plants. If hardiness depends on the amount of col- loidally adsorbed water, what colloid holds it in this adsorbed state? Some botanical in- vestigations by Spoehr of the Carnegie Institute suggested the probable answer to this question. He found that in cacti water-retaining capacity is correlated with pentosan content and that when the water-retaining capacity is increased or decreased by changes in environmental con- ditions, the pentosan content likewise increases or decreases at the same time. Pentosans were therefore investigated in fruit plants and vege- tables and a correlation was found between pentosan content and hardiness. This corre- lation is remarkably close if hot water soluble pentosans only are considered. These findings indicate that certain pentosans, probably pec- tin-like substances, are the colloids that hold water in an adsorbed state. This is further substantiated by the fact recorded by Spoehr that dryness tends to increase the pentosan content ot cacti and likewise their water re- taining capacity. It is well known that eul- SCIENCE [Vou. LV, No. 1424 tural practices or climatic conditions that tend to dry fruit plants out in the fall, increase maturity and hardiness. Consequently the very conditions that lead to a low total moisture content probably increase the amount of water- holding colloids and the quantity of colloidally adsorbed water—hence the greater hardiness of plant tissues with the lower moisture content. This understanding of the conditions asso- ciated with hardiness in plant tissues permits accurate outlining of the treatment or treat- ments that decrease susceptibility to low tem- peratures. It makes possible also an estimate of the magnitude of the effects that may be produced in that direction, and a recognition of their limitations. Such practices thus be- come incorporated in scientific horticulture. This example indicates the intimate relation between progress in horticulture and progress in other sciences. Subjects which on super- ficial consideration might never be suspected of contributing data valuable for the solution of horticultural problems are seen to be worthy of study. If little headway has been made along certain paths of investigation, it is not infre- quently because the methods, the facts or the technique essential to the solution of specific problems has been lacking. To this day, the official method for the determination of starch recommended by the Association of Official Agricultural Chemists is not an analysis for starch but for total hydrolyzable polysaccha- rides. Furthermore it is only within a com- paratively few years that a_ satisfactory method for determining total sulphur content has been available. As a result, much pains- taking labor has gone for naught, though some have noted, but have been at a loss to account for, the discrepancy between the results of such determinations and the unmistakable evi- dence of microchemical findings. The investi- gator can well afford to acquaint himself with recent advances in other fields and the broader his fund of information the more successful he will be. It might be suggested that progress in Physics, Meteorology and Forestry should be watched as well as that in various branches of Botany, in Chemistry, Soil Science and Agronomy. This task which would have been Aprit 14, 1922] out of the question a few years ago is greatly facilitated now by the increasing number of abstract journals and substantial help is af- forded investigators in many institutions by Plant Science Seminars, Scientific Societies and the like. Even though such conveniences be lacking much ean be gained by personal con- tact with investigators in other fields and by a mutual exchange of criticisms and suggestions. Treatment — that is, orchard practice, whether it be pruning, irrigation, fertilizing, thinning or what not—is an aspect of horticul- ture that may be compared to medicine, and the comparison is instructive because it indi- cates a possibility of development in horticul- ture from the application of scientific methods used by the physician or surgeon. Cultivation, pruning, the use of fertilizers and other treat- ments have been considered only in the light of one standard, the effect on crop production. The limitations of this one-tracked system may be demonstrated by reference to some recent experiments on fertilizer treatments. Tf apple trees are bearing poor crops, a spring application of some quickly available nitrogenous fertilizer will frequently increase the vield. Such inereases are very striking on weak trees, but some results obtained at Mis- souril show they can be obtained also on trees in good condition—on trees that are already bearing fair or even good crops. This effect of quickly available nitrogenous fertilizers ap- plied a couple of weeks before blossoming has been shown to be produced by increasing the set of fruit. Fruit setting, however, is only one step in fruit formation. The process be- gins with the formation of fruiting wood and involves in succession fruit bud differentiation, bud development to the time of blossoming, pollination, fruit setting and finally fruit de- velopment. The failure or limitation of a crop may be occasioned by interference with any one of these successive processes. It would make little difference how favorable conditions might be for fruit setting, if fruit bud differentiation had not occurred. Recent investigations have shown that those conditions in apple trees, pro- duced by spring applications of quickly avail- able nitrogenous fertilizers, which are so favor- SCIENCE 387 able to fruit setting, do not favor fruit bud differentiation. Hence if poor crops result from deficiency in the initiation of fruit buds, spring applications of quickly available nitro- gen would only accentuate the trouble. This work reopens for investigation the entire orchard fertilizer problem which was thought by many to have been solved in the last few years by experimental work with sodium ni- trate in the orchard. The same kind of fruit tree may present many different nutritional problems for treatment. Each problem re- quires special study and the remedy in horti- culture, as in medicine, depends on accurate diagnosis. The use of fertilizers to correct the alternate bearing habit in apple trees consti- tutes a problem as distinct from their use in increasing the set of fruit as spraying peaches for San Jose seale is from spraying to control scab. As investigators, we are too ready to dis- pose of problems by assuming that either the nutrition, the moisture or the temperature re- lations are involved and that cultivation or the application of some fertilizer will lead to maximum growth and productivity. We would spare ourselves the effort of analyzing the problem—of making a diagnosis to determine the precise difficulty to be overcome. The time is not far distant when fertilizer treatments alone will be as numerous and as specifie as all the horticultural practices recognized today. We must dispense with the idea of a mass at- tack on a bulk problem and apply more de- tailed methods, if we are to make rapid prog- ress. Aside from technical improvements in such fields as spraying and marketing, the lines of pomological investigation along which great- est progress seems possible are treatment, pro- pagation and plant improvement and treatment according to diagnosis promises to be one of the most fruitful. There is no cure-all, no patent remedy for promoting growth, for inducing hardiness or for inereasing crops. These can be accom- plished only by careful study and hard work. No practice can be recommended for all cir- cumstances or for all fruit plants, nor can the same practice be guaranteed to produce the same effects under different conditions. Treat- 388 ment should be regarded not so much in terms of practice as in relation to the specific phys- iological processes to be affected. Much work must be done before specific measures to in- fiuence these different processes in the desired direction are found. Many practices that have not proved generally efficacious in the past may be shown to have great value for specific con- ditions. Pomologists must think in terms of limiting factors, and not merely in terms of the soil elements that may limit plant growth but also in terms of the physiological processes that may be limiting fruit production. For all this work, an accurate knowledge of the chemi- cal changes associated with different physiolo- gical processes is of the utmost value because a thorough understanding of the conditions de- sired may suggest means for their accomplish- ment. Henry D. Hooker, Jr. UNIVERSITY OF Missouri, CoLtuMB14, Mo. A SUGGESTION AS TO METHOD OF PUBLICATION OF SCIENTIFIC PAPERS THE processes of scientific publication are admittedly in an unhealthy state. Various in- fluences contribute to the acuteness of this condition, but it is likely that a time of stress has merely emphasized weaknesses inherent in the ordinary procedure for printing scientific papers. The “jammed” plight of the periodi- cals is slowing the vital current of new results. It becomes desirable to consider alternative methods of printing, perhaps better adapted to the present character of our needs. In this country and abroad several suggestions have already been offered; the most drastie of these has urged the publication of abstracts only, ‘completed manuscripts to be deposited for reference in some central place—a scheme hay- ing so many unfavorable features as to merit little serious attention; it is not merely results we wish, but also some at least of the steps in their derivation. I have in mind more especially the field of zoology. To-day this subject is specifically served by a fine group of journals, and by an SCIENCE [Vou. LV, No. 1424 “advance” bibliographic service of filing cards bearing author-abstracts. This system of pub- lication is maintained through the cooperation of the Wistar Institute. These journals were founded some years ago, and each was de- signed to cover a particular group of zoologi- eal interests. They do not now correspond, in titles or in any individuality of contents, to major aspects of zoological development. Their fields of service overlap, sometimes to an embarrassing degree. Investigators acquire separata of papers of particular coneern to them. There is thus brought about a quite unnecessary duplication in the distribution of published work, and a proportionate waste of paper. Subscriptions for support of the journals are drawn from membership dues of the Zoological and Ana- tomical societies. Members therefore receive most or all of the journals, in this way accu- mulating a mass of unused, largely unusable, material; while still necessarily relying upon the convenient “reprint” for actual reference and use. I believe that these difficulties may be ob- viated, and the course of publication simplified and expedited. With the hope of attracting discussion of this matter, I outline here a plan regarded as practicable and to the point. The foundation of new journals has little to recom- mend it; these are likely soon to suffer the fate of the older ones. Save in some special fields, the journal method of publication has become measurably antiquated. The journals should be abolished. They do not represent rational subdivisions of zoologi- cal activity. There is no real reason why pa- pers accepted for publeation should be grouped to make up a “number.” It is cer- tainly more desirable that a paper be printed when it is ready for printing. If issued and originally distributed as a “separate,” unneces- sary duplication of distribution ean readily be avoided. This plan requires some central agency, such as we now have, for handling the mechanical details of publication. Serial numbers could be assigned to papers as issued. An entire series might then be bound by li- braries, though the more sensible way would APRIL 14, 1922 be to have them filed alphabetically by authors. In some essentials this procedure is already followed by the Archives de zoologie expéri- mental et général, by the Royal Society in its Transactions, by the Museum of Comparative Zoology, and by the University of California Publications. My suggestion, however, in- volves an important additional element. So- ciety subscriptions continuing as at present, it would be a simple matter to have each mem- ber receive a certain number of published pa- pers, more or less equivalent in total bulk to the journals now obtained. But it would be possible for the subseriber to select, through the Advance Abstract Bibliographic Cards, those papers specifieally desired. Additional papers, not regularly obtained in this way or from the authors, could then be purchased at small extra outlay. The American Anatomicad Memoirs and the few special reprints issued by the Wistar Institute have made a_ begin- ‘ning in this direction. The actual working of this plan would per- haps require that at, say quarterly, intervals there be issued Bibhographie Cards carrying the serial numbers assigned to the individual papers about to be printed. An accompany- ing order blank, by which articles desired could be requested by number, would give a simple, quick method of indicating one’s needs. It would at the same time serve to show the printer the size of the issue to be prepared, after allowance had been made for stock and for blanket subscriptions. The three- months’ period mentioned is sufficiently long. The experience of the Journal of General Physiology shows that with efficient manage- ment if is possible to print accepted articles within less than that time, even under present conditions. reserve Authors should by this scheme be in some degree relieved from the expense of purchas- ing separata for extensive private distribution. One’s library shelves, moreover, would no long- er be encumbered with journal numbers which must be bound at ruinous expense or else re- main unsightly. Any working plan of this type must be con- ceived as applying chiefly to contributions of SCIENCE 389 the character and average length now appear- ing in the journals. Incidentally, this scheme may show the way out of the difficulties some- times made in connection with the rather ar- bitrary rule now enforced by the journals as to the maximal length of acceptable contribu- tions. Although sometimes abrogated for reasons obscure, it has tended to be avoided by authors sphtting the material of an essentially unitary piece of work into a number of ar- ticles. While the length rule has perhaps act- ed to restrain some wordiness, it is hardly a rational rule; one could wish it supplanted by editorial persuasion ! It may be suspected, as a conceivable result of the plan outlined, that the quality of the papers might be automatically improved. 5 ie wein® Richards | Henglein? F— 1.13 0.75 0.99 | 0.8525 Cie 1.06 1.56 1.27 1.60 0.95. 1.232 1.40 1.00 Br— 1.19 1.73 1.35 HES O Nay 1.02 1.312 1.55 1.066 Ie 1.40 1.98 1.49 20a 1.12 1.432 1.70 1.179 line, and the molecular volumes of numerous halogen-substituted compounds; for salts, the molecular volumes of practically all metal halides, the volume change in solution, the melting points, boiling points, latent heat of vaporization, heat of formation and_ specific compressibilities of the alkali halides and many others, the percentage contraction for halides of small cations, the distance between the cen- ters of oppositely charged ions in crystals, and the radii of ionic halogens. There are many interesting item in the above enumeration of which space does not admit detailed consideration. For example the percentage contraction undergone when a salt is formed from the free elements, is found in this work to be related in a funda- mental way to the properties of the complex compound formed from it. Thus when a nickel halide is formed by the union of nickel with any of the halogens (fluorine, chlorine, bromine, or iodine) the percentage contraction is the same (22.5 per cent.) in each of the four cases. In the case of the cobalt and cupric halides the magnitude of the contraction is not quite constant, but increases slightly from the fluoride to the iodide. The constaney of the percentage contraction is also found when any halogen is combined in turn with the alkali metals (lithium, sodium, potassium, and ru- bidium). The contraction amounts to 60 per cent. each for the four fluorides, 43 per cent. each for the four chlorides, 38 per cent. each for the four bromides, and 30 per cent. for the four iodides. It is seen that the relative contraction decreases with increasing number of non-nuclear electrons in the halogen atom. The contraction for the cesium halides is greater than that given above for the other alkali halides. However in the oxy-acid salts cesium shows the same contraction as the other salts of the alkalis, and in molten halides it is details of each also perfectly normal as indicated by the eare- ful researches of Jaeger. The anomaly of cesium is therefore to be attributed to differ- ence in crystal form. As a matter of fact cesium halides possess cube-centered lattices, while all other alkali halides are simple cubic. The ionic radii can be derived from experi- mentally determined crystal distances only by means of some assumption. The following table shows the widely varying values, multi- plied by 108, which have been presented by eight workers. It is a singular fact that in spite of the wide discrepancies all of the values except those of Richards are quite accurately linearly related to the atomic volumes of the halogens at the boiling point, showing that whatever basis of calculation may be the closely similar halogens are still related to each other in relatively the same way. Richards’ values are calculated from the atomic volumes of chlorine, bromine and iodine at 25° where the three values are practically coincident, and this may explain the deviations in this case. However the third powers of the radii values, as direct functions of the volumes of single combined atoms, are found to be linearly related to gram-atomic vol- umes. This is apparently of greater signifi- 2 From close-packing in crystals. 3 From equality in size of ions with same num- ber of external electrons: K+ = Cl, Rb+ = Br-, (Obed *From viscosity of gaseous halogens, hence radii of atoms. 5 From various aspects of Bohr theory. Repre- sents actual distance from nucleus to outermost electron orbit. 6 From extrapolation of compressibility-con- traction curve to zero compressibility. 7 From empirical considerations of linearity to molecular volumes, Zeit. anorg. allgem. Chem., 120: 77 (December 14, 1921). 404 SCIENCE [Vou. LV, No. 1424 TABLE II Atomic and Tonie Radii (x 108) of the Alkali Elements1° l | | | | Schwen- | | Bragg ‘Davey | Landé |Grimm)_ den- Richards Saha® Heng- | | | aera : | lein | | | Chlo- | Bro- | | | | ride | mide | Iodide | Li | 1.50 | 0.98 | 0.88 | | 0.50 1.15 1.20 1.30 | 1.34 1.00 Na | 1.75 | 1.25 | 1.15 | 0.52 | 0.65 145) 1.45 | 155 | 14a 1.428 K 2.10 | 156 | 1.45 | 0.79 | 0.948 1.75 | 1.75 MBS ye 67) 208 Rb QO50 Tae GO sy LOLOTS yh 28, 1.90 | 1.90 AN Sy ales 2.478 1S Bisel alackeh Na) SOIL 1.32 1.90 | 1.85 1.90 | 1.86 cance that the chance linearity of first values are used, or 1.76 X 10—® with Davey’s. powers. The most recent values are those In either case this is also the radius of the of Henglein, whose procedure is very ques- tionable inasmuch as he takes Fajans’ values for bromide and iodide ions and _ then assigns values to chloride and fluoride so that a straight line connects the molecular volumes of the halides of any alkali metal and the sizes of the substituent halogen ion. By using the same process for determining the sizes of the alkali ions it is of course possible at once to write an equation by which the molecular volumes may be ealeulated from the constant size of the ion. Henglein quite nat- urally observes a very good agreement between calculated and experimental values. Table I indicates the definite progression in size and properties from one member to the next in such’ nearly perfectS families (or groups) of elements as the halogens and the alkalies. It is interesting in this connection to com- pare the radius of the ammonium ion. Using the distance between ion centers found by Bartlett and Langmuir for the ammonium halides, and subtracting the radii of the halo- gen ions, the ammonium ion is found to have a radius of 1.99 not only in conveying a great deal of information, but, what is more important, the probable significance of our knowledge with a due appreciation of its limitations. .... i By C. Stuart Gacer, Director, Brooklyn Botanic Garden 114 Illustrations. Cloth, $1.25 P. BLAKISTON’S SON & CO. Publishers Philadelphia KOFOID AND SWEZY MITOSIS AND FISSION IN THE ACTIVE AND ENCYSTED PHASES OF GIARDIA ENTERICA (GRASSI) IN MAN WITH A DISCUSSION OF |THE METHOD OF ORIGIN OF BILATERAL SYMMETRY IN THE POLYMASTIGOTE FLAGELLATA 5£ pages, 4 plates, 11 figures in text, 50 cents University of California Press BERKELEY, CALIFORNIA ORGANIC EVOLUTION Outstanding Difficulties and Possible Explanations By Mayor Lronarp Darwin The author examines and refutes some of the more plausible criticisms of Darwin’s Origin of Species. $1.60 MULTILNEAR FUNCTIONS OF DIRECTION AND. THEIR USES IN DIFFERENTIAL GEOMETRY By Eric Harotp NEVILLE A discussion of functions, embracing not only those of a single variable direction but functions of several independent direc- tions. $2.90 A TEXT-BOGK OF EUROPEAN ARCHAEOLOGY Vol. I—The Palaeolithic Period By R. A. S. MacatristEr A simple, thorough history of the Palaeo- lithic period designed for college students and beginners in the study of Archaeology. Illustrated, $16.50 64-66 Fifth Avenue, New York Prairie Ave., and 25th St., Chicago THE CAMBRIDGE UNIVERSITY PRESS, ENGLAND Announces the following NEW SCIENTIFIC BOOKS For sale by THE MACMILLAN COMPANY, American Agents MODERN ELECTRICAL THEORY Supplementary Chapters Chapters XV—Series Spectra By Norman Ropert CAMPBELL, Sc. D. A monograph based on Bohr’s theory, un- doubtedly the most important advance in pure Physics since 1913. Illustrated, $3.50 NEW MATHEMATICAL PASTIMES By Major P. A. MacMAHON Method of assembling various sets of pieces, based on the development of Per- mutations and Combinations, and introduc- ing a new species of mathematical recrea- tion and amusement. Illustrated, $4.00 FUNGI: ASCOMYCETES, USTILAGINALES, UREDINALES 3y Dame HELEN GWYNNE-VAUGHAN The presentation of Fungus as a living individual; morphological in approach, with special consideration of the Ascomycetes, Ustilaginales and Uredinales. Illustrated, $12.00 609 Mission St., San Francisco 330 South Harwood St., Dallas 17 Houston St., Atlanta Huntington Chambers, Copley Sq., Boston SCIENCE A Weekly Journal devoted to the Advancement of Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS 11 Liberty St., Utica, N. Y. Garrison, N. Y, New York City: Grand Central Terminal Annual Subscription, $6.00 Single Copies, 15 Cts. Entered as second-class matter January 21. 1922, at the Post Office at Utica. N. Y.. under the Act of March 3, 1879. Aprin 28, 1922 VoL. LV No. 1426 Individualism in Medical Education: Pro- FESSOR A. C. EXYCLESHYMER...0-...00.02.0.----- 437 Hydra in Lake Erie: WiLBERT A. CLEMENS.... 445 A Mosquito Attractant: 8. E. CRuMB.............. 446 Scientific Events: Heinrich Suter; The Calcutta School of Tropical Medicine; Field Work of the Museum of Zoology of the University of Michigan; Branches of the Psychological Corporation; Geographical Mecting in New York City; Sigma Xi at McGill University ; The Salt Lake City Meeting............-..-....-.-. 447 Sctentifie News and Notes... :2--- eet ADL University and Educational Notes...........2...+-+- 454 Discussion and Correspondence: The Writing of Popular Science: Dr. W. E. ALLEN. Two New Western Weeds: S. F. Buake. Cat-tail as a Feed: L. E. Frev- DENTHAL. Soil Shifting and Deposits: eh AN AIA SBN SS TS SU 5 4 Quotations: An International Language....-.....-.--.----.-.--- 457 Special Articles: Atomic Structure: Dr. Maurice L. Hue- cins. A Simple Bubbling Hydrogen Elec- trode: Dr. J. Roy Haag The Oklahoma Academy of Science: Dr. L. B. NICE INDIVIDUALISM IN MEDICAL EDUCATION! In human progress there are two funda- mental processes which sometimes proceed equally, but usually one or the other is dom- inant,—these two processes are extension and consolidation. In the birth and growth of na- tions, there is first settlement in colonies due to community of thought and action; this ex- pansion is followed by a union; national ex- pansion leads to international alliances; the expansion of alliances leads to consolidation into world leagues. In the growth of religions many beliefs are unified by the Christian reh- gion; then extension of doctrines leads to innumerable sects, followed by attempts at consolidation. In. the more specialized fields of activity the same processes are observed. In celestial physies the theory of gravitation co- ordinated the scattered and divergent views; then a period of differentiation, followed by attempts at coordination in the theory of rela- tivity. In the field of medical science there are many illustrations of the same procedure. Seattered observations on variations in the blood, phlegm, and bile, during illness were brought together in the humoral theory of dis- ease; in like manner studies on bacteria were unified in the germ theory. Studies on heredity and environment found common expression in the theory of evolution. In the past, medicine was largely restricted to the diseases of man- kind. At present she recognizes the intimate relationships of the diseases of plants and ani- mals to those of mankind. In the near future she must take into consideration the diseases of metals; ultimately her domain will extend widely over both the organie and inorganic world. In the growth of knowledge in all of 1 An address delivered before the Association of American Medical Colleges March 7, 1922. ' 438 its special fields and great provinces, and as a whole, two processes stand forth, namely, ex- tension and consolidation, specialization and generalization. The vitalizing factors in these are: individual thought, and collective thought. Whether one follows the theory of evolution or accepts the teaching of the book of Genesis, he must contemplate the beginnings of intellec- tual growth in the individual. Individual thought precedes collective thought. Individu- alism, in the abstract, postulates that each human being may live to the fullest extent his own life as he wills. According to Biblical history it attained its greatest development with the first inhabitant of the earth but did not reach its ideal. The family embodies the first step in the growth of collective thought; and as the family grows individuality becomes restricted. Here and there it breaks away from the common modes of thought and action and asserts itself in differences so pronounced that one member becomes a genius while an- other becomes a black sheep—a Rocail and a Cain. Roeail erects a sepulchre adorned with statues of various metals, made by talismanic art, which move and speak and act like living men. Cain becomes jealous and envious of Abel and murders him. Community life further accentuates common thought and is necessary for the preservation of mankind; but with its growth, individuality is again repressed. Through the ever inereas- ing restrictions brought about by unity of pur- pose and organization, individuality is forced toward the average. Ideas either destructive or constructive must go up or down to the level of common thought. Great leaders,— philosophers, statesmen, and _ scientists,—have been those who have resisted these equalizing forces. Now and then a voice cries out: “Here am I Jone wanderer in endless search of myself. For xons I have been searching from star to star down the ages until I chanced this way. . . I love the idea of equality, fraternity, democ- racy, but I must soon leave this crowd and wander on until I come to the kingdom of my solitary soul.” He who explores ways of thought or action far ahead of his contempo- raries must have an inner world in which he passes long and solitary hours. If he be en- SCIENCE [ Vou. LV, No. 1426 gaged in scientific experimentation, in an un- known land with neither map nor sign post, he may lose his sight as did Bunsen, or his life as did Lazear. If the development of individuality be ig- nored one of the greatest forces in the progress of mankind is lost to the world. On the other hand, the principle of collectivism underlies our entire social organization. It develops a general bond of likeness between the one and the many; it makes the individual a part of the whole; it leads to similarity, equality, fra- ternity, democracy. It enables us to move in companies, regiments, battalions, divisions, and armies. Without it, a nation sinks into oblivion and a world may be lost. Without individualism the same is true. A commander- in-chief, a great field marshal, is as necessary as the army. A million souls submerge their individuality for a common purpose, but each cries out, Where am I going? What am I doing? What I have in myself is moribund. I am physically an automaton, and intellec- tually boots, boots, boots. The child accepts life as it is; it sails in a ship over seas that are calm; it knows naught of the larder, ballast or sails; the length of the voyage; the course or the destiny. Its life is in another’s keeping; its own life is un- known; nothing stirs from within. The youth thinks of the ship; the voyage; the strange lands which bid him come. Self is beginning to assert itself; something stirs from within. Maturity builds a ship, earefully equips it, and sets forth on an uncharted ocean in quest of a new world. Something within takes pos- session of the heart and soul and guides every act. Edueation is the bringing out of something from within; not the foreing of something in from without. Its emblem was written by an unknown hand on the walls of Delphi— “KKnow thyself.” It is this something within; the personality, the essential self, the indi- vidual which must receive greater considera- tion in our schools. What I have in common with others is best developed by the school. What is mine and mine alone can not go to school with any one but it can be stimulated, intoxicated, liberated. APRIL 28, 1922 Let us proceed with the central thought; greater men in medicine through greater liberty in medical education. A medical school is built upon the same general foundation as any other institution. Purpose, products, materials, and methods form the corner stones. The purpose of the medical school is to train men in the application of scientific methods to the prevention, alleviation, and cure of dis- ease, and to advance medical knowledge in its broadest sense. The products of medical schools may be con- sidered as belonging to three principal groups: the practitioners, the investigators, and the teachers. A survey of the medical profession at large shows that its eminent men usually may be placed in one or the other of these groups; sometimes in two, but rarely in three. The group of practitioners comprises those whose primary interests are in the alleviation and cure of disease. The group of investiga- tors includes those whose deepest interests are in the causation and prevention of disease. The group of teachers contains those whose princi- pal aims are the dissemination of the methods adopted and the results achieved by the practi- tioners and the investigators. Lister, Pasteur, and Osler typify the groups. A few decades ago, the country demanded and the schools furnished, for the most part, but one type of practitioner, and that type was the all-round practitioner. He was obliged to know something of medicine, surgery, and ob- stetries, together with dentistry and pharmacy. In addition to these, he was expected to show proficiency as a veterinarian. The conditions of to-day are so different, that the all-round practitioner of to-day would have been a spe- cialist fifty years ago. The cries from the country for general practitioners are heard far and wide but are less and less heeded by the young graduate. A doetor who has had mod- ern training in laboratories and clinies with apparatus and libraries and contact with pro- gressive men, is quite unwilling to leave all these. Moreover he can not come up to dear old Dr. Brown to whom physiognomy revealed more than modern laboratory methods; who did many a successful major operation on the kitehen table, and who thought nursing and a SCIENCE 439 controlled environment entirely superfluous. The ambitious young doctor of yesterday, fol- lowing the advice and example of his success- ful seniors, went forth to do an all-round prac- tice for a number of years before entering upon the study of a specialty. Away from libraries, laboratories, clinies and stimulating colleagues, he found little growth or expan- sion, beyond that indicated by adipose tissue. The ambitious young doctor of to-day who contemplates a career as a specialist dispenses with this hibernating period of two or three years and seeks instead the live atmosphere of the hospital, an assistantship to the master, or a fellowship in some one of our great founda- tions. The rural districts and small towns will be obliged to adopt something of the same methods that they long ago adopted in secur- ing churches, schools, and factories—they will be ebliged to build and equip hospitals if they hope to obtain modern medical service. With the hospital comes the staff which, in turn, forms the basis of the group clinic. Instead of the general practitioner making a complete diagnosis, there is a group of collaborating clinicians, each of whom is an expert in his particular field. The rapid development of the group clinie is creating a situation which must be recognized both by the profession and the schools. . The practitioner of the future, either gen- eral or special, not only must measure up in self-reliance, responsibility, and judgment to the practitioner of the past, but also must be better trained and more thoroughly imbued with the investigative spirit. Each patient presents a problem, the solu- tion of which is more difficult than that in almost any other field of science. While every medical problem must be approached through the avenues of physics, chemistry, or biology, the physician is often baffled at the very be- ginning of his work by the fact that he is unable to determine which will aid him most. Often he finds that no one of these sciences will solve the problem but that all are involved. Physies may explain the mechanism of joints and muscles; it may aid us in the interpreta- tion of the effects of light, heat, electricity, osmosis, pressure, on living tissues, but it does 440 not explain, nerve impulses, sensations, mem- ory, or thought. Chemistry may teach us the rates of protein, carbohydrate, and fat meta- bolism in health and disease; it may help us to know more of the precious vitamines and hor- mones but it does not tell us why one child resembles the father or mother physically and mentally, while another child does not. Biology may aid us in solving this problem but she, too, is extremely jealous of her secrets. She read- ily acknowledges that the process of fertiliza- tion is essentially the same throughout the animal kingdom, but she teaches us that the processes of regeneration are entirely different in different forms, and cautions us not to infer that a new leg will grow out from the stump of an old one in man as it does in some of the lower animals. She teaches that the organs of seeing, of hearing, of smelling, of tasting, of feeling, are the organs through which these sensations habitually are received. But she warns us not to infer that the loss of one of these special sense organs means an entire loss of that special sense. Our senses overlap to a degree which we little realize; light percep- tion through the skin; sound perception through all parts of the body; color perception through both sound and smell; are a few of the many possibilities as revealed in the lives of Laura Bridgeman, Helen Kellar, Willetta Huggins and others. Deductions from the phe- nomena presented in these various fields are extremely hazardous and emphasize the neces- sity of working through the avenues of multiple hypotheses in the interpretation of disease. When this has heen said, let us also recall that the names of diseases, of their courses, and of their processes are broad, generic terms, which signify physical, chemical, and biological com- plexes. Acuteness in observation; precision in experimentation and caution and judgment in deduction are the essentials for the inter- pretation of disease. They are the A.B.C. of the practitioner of the future. One of the greatest needs in our medical schools of to-day is the encouragement of stu- dents to devote their lives to the study of the causation and prevention of disease. It be- comes more and more apparent, as set forth last year by the committee on graduate work, SCIENCE [Vou. LV, No. 1426 that the medical schools must give opportunity and encouragement for men to develop as re- search workers. We need no longer argue that reproductive scholarship must be supplemented - by productive scholarship. We accept the established fact that the investigative spirit must pervade the atmosphere of the medical school. Frequently a student stands where the roads fork and, as William James puts it, “one branch leads to material comfort, the flesh pots, but it seems a kind of selling of one’s soul; the other to mental dignity and independence, combined, however, with physical penury. On one side is business, on the other science.” It is not enough for the student to stand in deep perplexity outside the private door of his teacher and whisper that research work is going on inside. He must be invited in, and given time to accept the invitation. It is therefore necessary that some provision be made whereby any student may come more intimately in contact with research methods and ideals than is possible in our medical course of to-day. How far we ean organize research is a question. There is no doubt but what to some extent we can create the inves- tigative spirit. At any rate, we can help the young man who evinees this spirit; we can give him time; furnish him with apparatus and books; point the way to fields of investigation; discuss his problems and help him in kis ex- periments. We can not dominate him nor restrain him. We can not force him to work independently or in cooperation; this must de- pend upon his bent, his personality, his indi- viduality,—genius can not be organized nor ean it go to school. In every medical school there are those who are deeply interested in presenting summaries of the progress made in certain fields of medi- cine, or in the entire province of medicine. Their object is to sift out and correlate well established procedures. They may be neither practitioners nor investigators in the sense pre- viously mentioned. They are so to speak the editors of medical facts and theories; the com- pilers; the writers of textbooks; the historians. This group we may designate as teachers or medical journalists. I am fully aware that this group is one created by American institutions AprRIL 28, 1922] and will doubtless become extinct in time for the simple reason that teaching must be accompa- nied by thinking; teaching and research are inseparable. The great teacher has always pos- - sessed the investigative spirit but may not have been a great investigator. We must, at present make provision for those who wish to prepare for teaching in its broadest sense. These three types have been designated as they exist to-day. They are generic rather than specific. They possess many attributes in common and may sometimes form a trinity. The materials to be converted by one method or another into the products set forth are stu- dents who enter the medical school with a high school and at least two years of college train- ing. There are no two who have followed the same course of study with the same degree of interest or who have reached the same results. In the high school the student feels his way through a large range of group electives, and often before entering college he has decided that he will major in agriculture, engineering, law, theology, or medicine. In his college work, electives have enabled him to accentuate his choice or perchance to find that his deci- sion was wrong. In both high school and col- lege the student may have inclined toward sub- jects involving manual training and thereby have acquired keenness of touch and dexterity, or toward music, cultivating the sense of hear- ing. He may have elected biologic sciences, accentuating observation. He may have turned toward mathematics, physics and chemistry, emphasizing precision in deduction and ex- perimentation. He may have laid special stress on history or languages thus acquiring an excellent memory and facility of expres- sion; or perchance on philosophy thus devel- oping the power of abstract thought. Those of us who come in contact with these men as they enter upon the study of medicine are impressed by their differences in concept, habit and training. He who comes from the land of mighty oceans, forests, and mountains, thinks in larger terms than he who comes from the truek farm. The boy brought up in the coun- try better understands the thought and action of the country folk than the boy brought up in the city. The boy who is reared in the highly SCIENCE 441 commercialized districts of a great city regards an education in quite a different light from the one who is reared in a college or university town. One student is always on time, another is always behind time; one works quickly, an- other slowly; one is deft, another clumsy; one student retains best what he sees—his memory is visual; another retains best what he hears— his memory is auditory; still another remem- bers best what he reads—his memory depends on word association. One mind stores up isolated impressions and facts—it is analytic; another arranges impressions and facts in groups—it is synthetic. Will the student who is slow and clumsy ever make as efficient a surgeon as the one who is quick and deft? Will the one whose memory is auditory, or depends on word association, ever succeed in surgery as well as another who is able to visualize the positions and relations of organs in the body? Will the student who has an untrained ear ever make as efficient an internist as the one whose keenness in sound perception and dis- crimination enables him to differentiate be- tween normal and abnormal sounds in the lung or heart? Is the one which an analytic mind as capable of interpreting a syndrome as an- other whose mind is synthetic? It is beyond question that the men who enter the medical school at the age of 22 or 23 years are quite unlike in their mental equipment and this fact must be taken into account in the medical cur- rieulum. The method of the medical school is the eur- riculum; around it centers, to a large extent, the resources of the school, and through it are expressed the principles and concept of medical education. The curriculum of half a century ago was probably the best that could be devised to meet the needs of the profession and schools of that day. From an economic point of view, it was highly advantageous; one teacher could lecture to a large number of students and was entirely relieved of the time consuming instruc- tion to small groups and individuals. It was an excellent mechanism for turning out one type of general practitioner. While it served in part as an intellectual pathway, it also functioned as a “straight jacket.” It kept the students so busy that they could not destroy 442 much property nor throw out many professors. To-day the conditions are entirely different. The financial situation has changed so that the school is no longer a recipient but a donor. The students are better trained both in be- havior and intellect and are more eager for instruction. Many teachers are on a voca- tional basis and are able to give more time to instruction. Moreover, the medical school no longer looks to a single product, but to many products. The fixed curriculum of half a cen- tury ago will not meet the conditions of to-day, yet, in principle, it has remained unchanged. Our national organizations dealing with med- ical education have recognized and emphasized the need of a more liberal curriculum but have not adopted measures that materially assist the medical school in the development of such a curriculum. The fixed curriculum is so deeply rooted, so widely spread and so thoroughly fostered by standardizing bodies and educa- tional institutions that state examining boards are rapidly adopting or creating such curricu- lums as the basis for medical licensure. “Hight months in each of four separate calendar years,” devised for the improvement of medical education became a serious obstacle to patri- otie service during the late war, and is no less an obstacle to education at the present time. A curriculum covering 4,000 prescribed hours is another mechanism to protect and advance medical education but it has defeated thinking. Medicine and medical specialties, 900 hours; surgery and surgical specialties, 648 hours; obstetrics and gynecology, 216 hours; are arti- ficial divisions proposed by the medical edu- cational bodies as a means of insuring better trained physicians and of eliminating bad medical schools, but these regulations have re- sulted in the state boards going one step fur- ther with the same good intent. But what a handicap has followed as a result of these measures. One state requires 170 hours of general pathology, another 240, another 250, and still another 270. Like variability is found in practically all the subjects in the state board curriculums. Certain peculiar re- quirements are exacted by some of the state boards. For example, one says in substance, either teach 60 hours of electro-therapeuties or your graduates can not practice in our state. SCIENCE [ Vou. LV, No. 1426 The day is not far distant when the schools must either incorporate in their curriculums the particular requirements of each state board curriculum or find that their graduates are not qualified to practice in these states. To incor- porate these requirements means an enormous time expansion and this is impossible. The schools are thus approaching an impasse of their own creation and some remedy must be found. The one obvious solution is the erea- tion of an elastic curriculum. The students in entering the medical school with a fixed eurricu- lum are beginning a four-year program that requires all to do essentially the same kind and the same amount of work at the same time and in the same way. ‘They are leashed to- gether, made uniform in action and thought like the rowers in a great galley; shackled hand and foot, heart and soul, with chains of our own forging. It follows that the more uni- form the special senses and _ intellectual processes, the more efficient becomes such a curriculum. To reach its maximal efficiency, we must revamp and equalize the special senses and intellectual processes,—but is this education? The fixed and congested curriculum of to- day must give way to an elastie curriculum which is adjustable not only to these perplexi- ties but also to instructional resources, clinical resources, and to the growth of medical sci- ence. It must provide for collective teaching; cooperative study and individual study. Alexander Bain tells us that in the Scottish universities prior to the eighteenth century the quadrennial arts course was conducted by so- called regents, each of whom earried the same student through all the four years. In a rectorial address to the students of Aberdeen University, in 1882, he said: “You the students of arts, at the present day who encounter in your four years, seven faces, seven voices, seven repositories of knowledge, need an effort to understand how your predecessors could be cheerful and happy confined all through to one personality; sometimes juvenile, some- times senile, often feeble at his best.” Con- trast this with the condition to-day, when sey- enty faces, seventy voices, and seventy person- alities are encountered by the medical students in the four years of their course. To the ApriL 28, 1922] single instructor the student could carry his entire intellectual possessions; to each of the seven, one seventh; to each of the seventy, he can carry but one seventieth. But what instructor realizes this and is willing to accept his proportion? Each demands more than the student can give, and the student under this tremendous pressure loosens his hold on the get-something idea, adopts the get-by methods, and revises his ethical principles accordingly. Probably no field of science is undergoing a more active fermentation than medical science, with the splitting off of new segments; the dis- carding of certain subjects; and the addition of new subjects. Just as physiology and path- ology split off from anatomy, so biochemistry is outgrowing physiology; bacteriology is asserting its independence of pathology; pedi- atrics and neurology, otolaryngology and oph- thalmology are attaining independence from general medicine and surgery. Owing to the increase in entrance requirements, certain sub- jects like chemistry, embryology, histology and comparative anatomy are being shifted from the medical course to the premedical course, while other subjects like osteology, bone mod- eling, etc., have fallen by the wayside. Again, there is going on a continual importation of subjects from the outlying fields of investiga- tion. Immunology, Roentgenology and para- sitology have been brought into the curriculum from these outlying fields. The schools that are most actively engaged in the exploration and investigation of borderland subjects find great- est difficulty in holding to a fixed curriculum. The clinical resources of one school may be quite unlike those of another. One is favorably situated for the study of tropical diseases, an- other is able to utilize a great tuberculosis sana- torium, another a great psychopathic institute. The school should be,able to adjust its curri- culum to these resources. If in South Africa, study sleeping sickness in the clinic, in the class room, and in the laboratory. If in Panama or Louisiana, emphasize, if you wish, malaria; if where cretanism abounds, study it, teach it and think it. While one school may thus emphasize this or that particular line of study, all are studying disease, and the under- lying principles of disease prevention and con- SCIENCE 443 trol are not distributed geographically. Upon the proper certification that a student has had four or five years training in a good medical school should rest his qualification to practice. If it be expedient to protect the public by some form of state or national examination such examination should be directed solely toward determining the student’s ability to work and think in terms of disease prevention and control. The principle of collective teaching in all education is based upon the assumption that all human beings possess certain resemblances both physical and mental; otherwise we could not speak of them as a group. Hach person possesses more or less of every ordinary human power. Our senses of feeling, tasting, smelling, hearing and seeing are similar; their actions and interactions upon an inherited substratum are reflected in thinking, and modes of thought run along fairly parallel lines. Col- lectivism stimulates a spirit of emulation; of comparative evaluation of mental assets both quantitative and qualitative. It arouses a sense of power which enables a member of a group to overcome obstacles which would de- feat him if he were alone. This is forcibly illustrated by the heroic deeds of the soldier when inspired by the common purpose of the group. The status of the medical profession demands many elements of collectivism. There must be developed in the medical students a fraternal sympathy; a spirit of mutual consid- eration, and a basis for disciplined, or expert, cooperation. There is a fairly common sub- stratum in each subject, in each great division, and in the curriculum as a whole, which can be presented collectively, and whether or not this be the method of the future, it must be the method of the present because it is an economic necessity. These are some of the considerations which justify class lectures, class demonstrations, class experiments and class examinations. It must not be inferred, however, that it likewise justifies the existence of the present division of students into fresh- man, sophomore, junior and senior classes. This grouping is a menace to education and should disappear as soon as possible, especially in the medical school. 444 The spirit of cooperation between faculty and students in medical training is one of greatest value to the student, not only for the school period, but throughout his entire life. In order to develop this spirit, we should de- termine as far as possible the special assets of each student at the time he enters the medical school, and ever keep in mind his adaptability for certain kinds of work. Much can be learned through contact afforded by laboratory work and through the seminar. This should be supplemented by a knowledge of his home life, his living conditions and his social habits. Through careful observation and inquiry, we must obtain as clear a picture of the student’: individuality as is possible. With this as a guide we should help him to place his assets where they will yield the greatest returns. HEx- perience teaches that most students, at the end of the second or third year of the medical course, have decided whether they wish to lay equal emphasis on medicine, surgery and ob- stetries, fitting themselves for general practice, or to give some emphasis to one, fitting them- selves for a special field. If, in the judgment of the faculty, the student’s selection is wise, he should be permitted to accentuate his choice. In the fourth year the student should be allowed a further latitude which will permit him again to accentuate the all-round training in medicine, surgery and obstetrics, or to lay further emphasis on one of these. In the fifth year, he should be given the liberty to round himself out for general practice as an interne, or to add to his special training, or to do inde- pendent work in research. Collective teaching and cooperative study are both necessary but they both are drawn into a common vortex unless supplemented and invigorated by indi- vidual study. Individual study alone starts the waves which roll on and on toward the unseen and unknown shore. Working in harness is most excellent for the development of the team, but the freedom of the fields is necessary for the growth of the individual. What an inspiration comes through the exploration of the limitless fields! What a thrill comes when the indi- vidual receives a new interpretation or new revelation of nature’s laws! How hopeless to SCIENCE [Vou. LV, No. 1426 read a description of the country one is about to explore. It is known only by exploring it. Individuality derives strength from the history of science, its workers and their work; but no record or experience coincides with it. They are as guide posts which disappear at the fron- tiers of science and individuality must wander on alone. The light from the north star may direct its footsteps but the light which comes from the soul spurs it on. The traditional home of individuality is in the university, and . here is the one place where it should be fostered and encouraged. It is fair to presume that in each of our medical schools there are to-day students of great potentiality who need but the stimulus and opportunity to become leaders in science. How shall they be given the oppor- tunity. One of the simplest of the initial steps to be taken would be to grant them the privilege of electing a certain portion of their work both quantitatively and qualitatively. The privilege of adjusting study to capacity should be restored. It was distinctive of the earlier ages and each successive generation has lessened the privilege. The students of our day are ex- pected to know more and must consequently attempt to learn more than the most brilliant intellectual leaders of the past, who would be content to-day with the schooling of Horace, of Shakespeare or Darwin. Where they learned one thing we are attempting to learn a half dozen. They acquired knowledge; we attempt to. We ean not keep the medical students marching in the trodden paths of their predecessors until weary and heartsick they complete the march, only to find that they have also acquired mental debility on the way. We must encourage them to forsake the trodden paths, to break tradition when tradition is out- grown, and to explore the unknown fields. Individuality ean never be limited to the mech- anism of public order, either within or without the school. Life is bigger, it asks for more. There is only one way to develop strong men, and that is by helping them to become inde- pendent thinkers. Electives are the stepping stones to independent thought, and independent thought is the threshold of knowledge. Throughout nature there are many beautiful pietures of collective and individual effort. APRIL 28, 1922] Who can but envy the ideal presented in the life of the wild honey bee that belongs to the swarm and works with her companions for a common purpose. Her coming and going are regulated by no schedule or master. She goes through the forests, along the streams, over the mead- ows, from flower to flower, gathering nectar from wherever it can be found. Ever going, ever returning, she not only increases her par- ticular store, but enlarges that of the swarm. Beyond and above all these, and all unknown to her, she gives to mankind greater blessings in flowers and fruits. Let us give to the student opportunity an encouragement to seek truth wherever it can be found. In bringing truths together he builds not only for himself but also increases the common fund of useful knowledge. Be- yond and above these, he helps to build a great fund of knowledge which will illuminate life in the years to come. A. C. EYCLESHYMER COLLEGE oF MEDICINE, UNIVERSITY OF ILLINOIS HYDRA IN LAKE ERIE WE seldom think of Hydra as of outstanding economic importance. However in this con- nection some interesting data were obtained by the writer during the summer of 1920 while staying at a pound-net fishery on the north shore of Lake Erie near Merlin, Ontario. The fishery is located about midway between Ron- deau and Point Pelee, and from it are operated 20 pound-nets in four strings, 5 pound-nets in a string. The strings are approximately three miles apart and this would mean about nine miles from the most easterly string to the most westerly. In midsummer all the nets were taken out of the lake, some replaced from a reserve stock, the others simply reset after being washed, dried, mended and tarred. This midsummer cleaning is necessary because of the algal and other growths which accumulate on the nets making them heavy as well as putting considerable strain on the nets, especi- ally in stormy weather, through the obstrue- tion of the free flow of water through the meshes. All of the nets when lifted in late July and SCIENCE 445 early August were loaded with a very con- spicuous brownish-orange growth in addition to the bright green algal growths. At first sight diatomaceous ooze or a bacterial produc- tion was suggested but microscopic examina- tion showed it to be composed of innumerable living Hydras. The nets were lifted into the characteristic flat-bottomed pound-net boats and brought to the dock. The boats were anchored 100 to 150 yards from the dock and the nets dragged through the water to cars on the dock in order to wash off some of the loose material, especially mud. In addition to the mud many Hydras were washed off and these gave to the water a brownish-orange color quite distinct from the lighter color of the mud. The bottoms, seats, ete., of the boats were covered with Hydras to the depth of from 14 to 4 inches and a quart jar was quickly filled by simply running a hand along the seats. A fisherman eight miles to the west and another seven miles to the east reported Hydra in ap- parently equal abundance. This means a dis- tribution of at least fifteen miles along this part of the shore. The beach is sandy to gravelly with some large stones. Very little life was found on the bottom out as far as one could wade. However out beyond the region of strong wave action there must be places of attachment for the Hydras other than the nets in order to account for the existence of the species from one fishing season to another, since in 1920 they had not reached sexual maturity by the first week in Decemner when the nets were removed for the season. Specimens of this Hydra were submitted to Professor Frank Smith of the University of Illinois who kindly stated that they without doubt were Hydra oligactis Pallas although absolute determination could not be made in the absence of gonads. He stated that the large size and numerous buds indicated opti- mum conditions of food and temperature. Fishermen had frequently spoken about a poisoning which often affected them while handling the nets during the process of clean- ing and mending. They said this occurred chiefly after the nets had dried and were covered with a fine dust which they called tar dust. No poisoning was observed during this 446 summer but the men stated that their hands and faces became inflamed and swollen especi- ally if there were any cuts. The eyes were often affected also. Lack of time prevented carrying out any experiments but it seems quite probable that the poisoning could have been traced to the Hydras. The dust was com- posed of dried sediment and organic matter and certainly must have contained a high per- centage of Hydra remains. This account has been written to call atten- tion to an economic problem in relation to the fishing industry, which awaits study. There would appear to be at least four points for investigation. (1) The amount of interference and in- jury caused to the nets by these great growths. (2) The question of the poisoning of the fishermen. (3) Do these Hydra destroy young fish to any appreciable extent in open water? Beard- sley in 1902 in Bull. U. S. Fish. Comm., vol. XXII, pp. 157-160, recorded the destruction of trout fry by Hydra in a hatchery at Lead- ville, Colo. (4) To what extent do these immense num- bers of Hydia reduce the entomostracan food supply of young fish and of mature fish such as the ciscoes? The latter in Lake Erie feed almost exclusively upon Entomostraca and if ihe Hydra are as abundant throughout the lake as they are along the fifteen miles of shore as described above they must be very serious competitors of these fish in the matter of food. Since the above was written Professor Paul S. Welsh of the University of Michigan has informed me that he has been making a special study of Hydra in the Lakes of Northern Michi i Sanaa Wiueert A. CLEMENS DEPARTMENT OF BrioLoGy, UNIVERSITY OF TORONTO A MOSQUITO ATTRACTANT Certain facts regarding the possibility of attracting mosquitoes were disclosed in the course of experiments made in 1919 which may have a bearing on mosquito control. Press of other work has prevented further development SCIENCE [Vou. LV, No. 1426 of this project and the following notes are offered for the consideration of those who may care to give the matter further attention. A number of possible attractants were tested. Among these were crude mixtures of the com- ponents of perspiration and of blood which seemed to produce faint, erratic response from the mosquitoes, but it was found that a degree of warmth somewhat above that of the sur- rounding air was highly and consistently at- tractive to a certain percentage of these in- sects. Thus a joint of stove pipe placed in the woods and warmed somewhat by an alcohol lamp, attracted about as many mosquitoes as were attracted by persons in the vicinity. It must be said, however, that in all of our field tests of this attractant the mosquitoes were scarce. In most of the laboratory experiments with heat Culex pipiens was the species used and the insects were liberated at will, as bred, into a cage about 20 x 20 x 15 inches square having the top and three sides of cheese-cloth, the bottom of wood, and the fourth side of glass for observation. The source of heat was water in a glass flask which was heated by an alcohol lamp. Air bubbled through this water through tubing by means of a pump in connection with a gas bag and was afterwards delivered to a funnel the open face of which, covered with cheese-cloth, was placed very near but not touching the side wall of the mosquito cage. A thermometer was inserted in this funnel. As the temperature rose to a point where it exceeded somewhat that of the surrounding air a sinister beard-like growth would appear on that part of the cheese-cloth wall of the cage covered by the mouth of the funnel. This was produced by the beaks of the mosquitoes which were pushed through the cloth with great per- sistence as long as the current of warm, moist air was kept within certain limits of tempera- ture. There seemed to be no specific optimum temperature but the maximum response oc- eurred between 90 and 110 degrees Fahrenheit which represented temperatures from 15 to 30 degrees higher than that of the surrounding air. When the temperature reached 120 de- grees less interest was displayed and at 140 degrees the mosquitoes were entirely dispersed. APRIL 28, 1922] At temperatures below 85 degrees there was very little response if any.. A comparatively small number of the mos- quitoes reacted positively to heat at any one time; thus with 300 mosquitoes in the cage per- haps not more than fifteen or twenty would be attempting to feed at the height of the re- action. Whether the same individuals were concerned in each of a series of such responses or whether various individuals at different times took part, was not determined. In nearly all of these experiments, which were made in an open insectary, no attempt was made to eliminate the odor of the observer but in some tests made in a closed room in an air-tight apparatus the mosquitoes responded in the usual manner when air was drawn from outdoors through a long tube. It is interest- ing to note, however, that when the breath was bubbled through the water instead of the usual current of air a decided increase of interest on the part of the mosquitoes was manifest. The admixture of various amounts of carbon di- oxide with the air stream did not increase the interest over that shown for undiluted air. In one series of experiments a hole about two inches square was cut in the lid of each of two pasteboard boxes which were exactly alike. These holes were covered with cheese- cloth and a layer of absorbent cotton was sup- ported immediately beneath this cloth. In one box the cotton was moistened with cool water while in the other it was moistened with hot water and was supported by a bottle containing hot water. When these two boxes were ex- posed in the mosquito cage considerable num- bers of the mosquitoes would visit the warm box and attempt to feed while they paid no attention to the cool box. Several types of traps in which heat was employed as an attractant were tested in the field and mosquitoes could be caught in even the erudest of these traps but the insects were also able to escape from all of them, display- ing decidedly more ingenuity in this respect than is shown by the house fly. Experiments with more complicated traps were cut short owing to the entire disappearance of mos- quitoes. SCIENCE 447 It was also found that mosquitoes in cages fed readily upon a solution of potassium ar- senite in sweetened water and that this material . was highly toxic to them. This suggested the use of such a poisoned bait in heat traps and traps were also devised in which the insects might be destroyed upon entering a chamber containing potassium cyanide. Neither of these agencies could be tested in the field. S. E. Crums BuREAU OF ENTOMOLOGY, U. S. DEPARTMENT OF AGRICULTURE SCIENTIFIC EVENTS HEINRICH SUTER On March 17 there passed away Heinrich Suter, for many years gymnasialprofessor in Zurich, Switzerland, and a noted student of the history of Arabic mathematics and astronomy. For thirty years he was active as a translator and commentator of Arabic authors. The twenty years preceding 1892, when his first distinctly Arabic research was published, were years of preparation, during which he pub- lished a history of the mathematical sciences and a number of papers on mathematies during the Middle Ages in Europe. Most of his shorter articles appeared in the Bibliotheca Mathematica and in Schlomilch’s Zeitschrift fiir Mathematik und Physik. As regards the quality of Suter’s extensive studies of Arabic science it is enough to say that they are highly respected in an age when higher standards of historical accuracy are being established in Europe. Suter was born on January 4, 1848, at Hedingen, near Zurich; he studied in Zurich and Berlin, and took his doctorate in 1872. FLorIAN CaJOoRI THE CALCUTTA SCHOOL OF TROPICAL MEDICINE THE British Medical Journal states that the School of Tropical Medicine and Hygiene and the Carmichael Hospital for Tropical Diseases at Calcutta were opened by Lord Ronaldshay, governor of Bengal, on February 4. In the issue of December 3, 1921 (p. 957), it was noted that the School of Tropical Medicine and 448 Hygiene had begun work in the previous No- vember, when a telegram of congratulation, an- nouncing that the first lectures had been given, had been sent by the director, Lieutenant- Colonel J. W. D. Megaw, I.M.S., to Sir Leonard Rogers, who played the leading part in the inception and carrying through of this great enterprise. In the Journal of April 23, 1910 (p. 1010), the very great advantages which Caleutta offered for the establishment of a school of tropical medicine were pointed out; not only is the variety of clinical cases illus- trating tropical diseases unsurpassed, but there is an excellent hospital and medical school, with a highly qualified staff accustomed to teaching, and for the greater part of the year the climate is no drawback. Some eleven years ago the general scheme for the school of trop- ical medicine was worked out by Sir Leonard Rogers, but its subsequent history has been marked by many delays, not a few of them to be traced to the war; the foundation stone was actually laid by Lord Carmichael, governor of Bengal, in February, 1914. The hospital has accommodation for about 100 patients, Euro- pean and Indian, while the school has chairs of tropical medicine, pathology and bacteriology, protozoology, pharmacology, serology, public health, and chemistry, to which appointments have already been made; professors of hygiene, entomology, and biochemistry have still to be appointed. In addition, there are assistant pro- fessors of the chief subjects, and a number of special research appointments have been made. The nucleus of a reference library has been formed, mainly by gifts from Sir Leonard Rogers. In the report of the director for 1921 it is stated that classes will shortly be opened for the diploma in public health of Calcutta University; classes for the diploma in tropical medicine have already begun. The director con- siders that the result of the first year’s working has entirely removed the doubts and fears which assailed him when he entered on his responsible duties. Considerable progress has also been made in the research laboratories, and reports have been published of work in connection with leprosy and kalazar and filariasis, and on the work of the hookworm laboratory. SCIENCE [Vou. LV, No. 1426 FIELD WORK OF THE MUSEUM OF ZOOLOGY OF THE UNIVERSITY OF MICHIGAN During the next fiscal year, which begins on July 1, the Museum of Zoology of the Univer- sity of Michigan will carry on field work in Michigan, California, Washington, Oregon, North Dakota, Tennessee, Curacao, Panama, Mexico, Brazil and Bmitish Guiana. Fifteen persons will be in the field: Carl L. Hubbs, Norman A. Wood, Lee R. Rice, Mina Winslow, Frederick M. Gaige, Helen T. Gage, Theodore H. Hubbell, and Alexander G. Ruthven, of the museum staff, and Crystal Thompson (Amherst College), Robert Hatt (University of Michigan), Rolland Hussey (Bussey Institution), Horace B. Baker (Uni- versity of Pennsylvania), Thomas L. Hankin- son (Michigan State Normal School), and Jesse Williamson and John Strohm of Bluffton, Indiana. The work in North Dakota will be done in cooperation with the North Dakota Biological Station, of which Professor R. T. Young is director. The work in western Brazil is under way and is being directed by Jesse Williamson. The party will remain in the field until some- time next year. BRANCHES OF THE PSYCHOLOGICAL CORPORATION EXECUTIVE committees for branches of the Psychological Corporation have been organized in several states as follows: Massachusetts: William MeDougall, chairman ; Herbert S. Langfeld (Harvard University), sec- retary; Edwin G. Boring, W. F. Dearborn, W. R. Miles, Daniel Starch, F. L. Wells. Pennsylvania: W. V. Bingham, chairman; E. K. Strong, Jr. (Carnegie Institute of Tech- nology), secretary; Clarence E. Ferree, Francis N. Maxfield, B. V. Moore, J. H. White, Lightner ‘Witmer. Ohio: George F. Arps, chairman; Harold E. Burtt, (Ohio State University), secretary; B. B. Breese, B. R, Buckingham, Henry H. Goddard, H. M. Johnson, Garry C. Myers. Michigan: W. B. Pillsbury, chairman; H. F. Adams (University of Michigan), secretary; APRIL 28, 1922] S. A. Courtis, C. H. Griffitts, G. M. Whipple, Helen B. T. Wooley. Illinois: Walter Dill Scott, chairman; Frank N. Freeman (University of Chicago), secretary; Madison Bentley, Elmer E. Jones, Charles H. Judd, E. S. Robinson. In addition to the branches that have been definitely established by the psychologists of the states named and approved by the executive committee of the directors of the corporation, other branches are in course of organization. All members of the American Psychological Association who are interested directly or indi- rectly in the applications of psychology, as well as other competent psychologists approved by the branches, may be members of the branches. Correspondence in regard to the Psychological Corporation in the states named should be addressed to the secretaries of the executive committees. GEOGRAPHICAL MEETING IN NEW YORK CITY THe sixth joint meeting of the American Geographical Society and the Association of American Geographers will be held in New York, Friday and Saturday, April 28 and 29. The sessions will be held at the Exhibition Room of the American Geographical Society, Broadway at 156th Street. Professor Harlan H. Barrows, president of the association, will preside at the sessions. The joint meeting will be called to order on Friday morning by Mr. John Greenough, president of the American Geographical Society. The Belleclaire Hotel, at the corner of Broad- way and 77th Street, will be headquarters for association members. The American Geograph- ieal Society has against invited the members of the association and invited speakers to be their guests from Thursday afternoon to Sat- urday noon. Non-members, as always, will be cordially welcomed to all program sessions. Space in the Exhibition Room has been re- served for an exhibit, by members of the asso- ciation of new maps and diagrams. Members are urged to send any geographical material they desire to have displayed in advance of the meeting. The noon hour each day gives an opportunity to diseuss materials on exhibit, SCIENCE 449 an opportunity that has proved very helpful in the past. . The society’s building can be reached by the uptown subway train marked Broadway and Seventh Avenue Express, Van Cortlandt Park, or Dyckman Street, or 215th Street, from any Broadway station. The 72nd Street subway express station is five blocks south of the hotel; the 79th Street local station is two blocks north. At certain hours change must be made from a local to an express train at 96th Street. The program is as follows: Fripay MorNING SESSION Vilhjalmur Stefansson: Colonizing the lands be- yond the treeline. Alfred H. Brooks: The future of Alaska. H. N. Whitford: Present and prospective use of tropical lands and tropical forests as illustrated by the Philippines. FripaAy AFTERNOON SESSION Oliver E. Baker: The problem of land utilization and its geographic aspects. Carl O. Sauer: The problem of the cut-over pine lands of Michigan. Hugh H. Bennett: The soils of the Southeastern States and their utilization. Fripay EVENING Round Table Conference: Methods and problems in the study of land utilization. SarurDAY Mornin@ SESSION E. F. Gautier (University of Algiers): Native life in French North Africa. H. A. Brouwer (Delft Technical Institute) ; Physical features of the Dutch East Indies. C. W. Bishop: Geographical factors in the early eulture development of Japan. SIGMA XI AT McGILL UNIVERSITY Tue thirty-sixth chapter of Sigma Xi was installed on April 13 at McGill University, Montreal. This event marks an epoch in the society’s progress inasmuch as the MeGill chapter is the first one to be established outside the United States. It is expected that there will soon be other petitions from the Dominion, and that Canadian institutions will take an active part in the society’s affairs. The charter membership of the new chapter comprises 41, including representatives of both pure and applied science and medicine. Four of the members are also fellows of the Royal 450 Society, a somewhat new distinction to come to Sigma Xi. ; The installation ceremonies were conducted by Dr. Henry B. Ward, president of Sigma Xi, and Dr. Edward Ellery, secretary of the national organization. After the routine busi- ness had been transacted, Dr. Ellery delivered the charge to the new chapter, tracing the his- tory of the society since its inception at Cornell in 1886, and outlining the gradual evolution of its ideals and methods of functioning. The installation dinner was held in the even- ing at the Mount Royal Club. The chapter had as its guests Sir Arthur Currie, principal of the university; Dr. Gordon Laing, dean of, arts and chairman of the Graduate School; Mr. W. M. Birks, of the board of governors; Dr. Georges Baril, of the Université de Montréal; Mr. E. J. Archibald, managing editor of the Montreal Star, and Mr. R. L. Hamilton, president of the Students’ Council, as well as Dr. Ward and Dr. Ellery. The toast to MeGill University was responded to by Sir Arthur Currie, that to Sigma Xi, by Dr. Ward in an inspiring address, and that to the new chapter, proposed by Dr. Ellery, by Dr. F. D. Adams, vice-principal and dean of applied selence. The officers of the McGill Chapter are: President: Dr. W. W. Chipman. Vice-presidents: Dr. A. 8. Eve. F. R. S., Dr. J. Bonsall Porter. i Secretary-treasurer: Professor R. Del. French. Executive committee: Dr. H. G. Barbour, Pro- fessor F. E. Lloyd, Dr. D. A. Murray. The secretary expresses the hope that no member of Sigma Xi may pass through Montreal without giving the McGill Chapter an opportunity of weleoming him to the city and of assisting him in every possible way. THE SALT LAKE CITY MEETING THe summer session of the American Asso- ciation for the Advancement of Science to be held in conjunction with the sixth annual -meet- ing of the Pacific Division of the Association at Salt Lake City, June 22 to 24, 1922, prom- ises to be a very successful meeting. Salt Lake City offers many advantages as a meeting place. The center of a rich agricul- SCIENCE - the Association. [Vou. LV, No. 1426 tural and mining section, it has large and important commercial and manufacturing interests. But it is perhaps chiefly famed for its scenic attractions drawing every year thou- sands of tourists by auto and railway from all parts of the country. The opportunity will be seized by many who will wish to combine a pleasure trip to one of the most interesting sections of the west with the advantages of a scientific meeting. Here will be met delegates from the educational centers of the Pacific Coast as well as from the middle western and eastern states. Many men active in science who have not found it possible to attend the eastern meetings will be at Salt Lake City. Contacts and relationships will be established that will widen the horizon of those attending and prove of lasting benefit. The hosts of the Salt Lake City meeting will be the University of Utah, the Utah Acad- emy of Sciences, the Utah Agricultural College and the Brigham Young University. Arrange- ments will be made for the comfort and enter- tainment of visitors. The meeting will be held under the auspices of the Pacific Division of Dr. Barton Warren Ever- mann, the president of the Pacific Division, American Association for the Advancement of Science, will preside at the general sessions and will deliver the presidential address at the opening session on Thursday evening, June 22. He will speak on “The conservation and proper utilization of our natural resources.” An outstanding feature of the meeting will be a symposium on “The Problems of the Colorado River.” The great reclamation project which has for its object the utilization of the waters of the Colorado River has already attracted wide attention. It is proposed to con- sider in this symposium the scientific aspects of the problems involved. The arrangement of the symposium is as follows: 1. General description of the Colorado River: Mr. E. C. La Rue, hydraulic engineer, United States Geological Survey, Pasadena, California. 2. Archeology of the Colorado River Basin: Professor H. R. Fairclough, Stanford University, California. 3. Geology of the Colorado River Basin: Dr. Frederick J. Pack, Deseret professor, department AprRIL 28, 1922] of geology, University of Utah, Salt Lake City, Utah. 4. The conservation of the waters of the Col- orado River from the standpoint of the Reclama- tion Service: Mr. Frank E. Weymouth, chief of construction, United States Reclamation Service, Denver, Colorado. 5. The interstate and international aspects of the Colorado River problem: Dr. C. E. Grunsky, vice-president’ of the Pacific Division, American Association for the Advancement of Science, San Franeiseo, California. The preliminary announcement of the meet- ing will be issued shortly to members with fur- ther details of the meeting. While none of the sections of the national association will arrange to hold sessions at this summer meeting the various fields of science will be represented in the meetings of the affili- ated societies of the Pacific Division. Those scheduled to hold meetings at Salt Lake City are: The American Physical Society. The American Meteorological Society. The American Phytopathological Society, Pa- cific Division. The Ecological Society of America. The Society of American Foresters. The Cooper Ornithological Club. The Pacific Coast Entomological Society. The Pacific Slope Branch, American Associa- tion of Economie Entomologists. The Plant Physiologists. The Utah Academy of Sciences. The Western Psychological Association. The Western Society of Naturalists. SCIENTIFIC NOTES AND NEWS THE degree of doctor of science will be con- ferred in May by Liverpool University on Sir Charles Sherrington, Waynflete professor of physiology at the University of Oxford, presi- dent of the Royal Society and of the British Association for the Advancement of Science. THE honorary degree of doctor of science has been conferred on Sir Thomas Muir by the University of Cape Town, in recognition of his researches in mathematics and mathematical history. Sir Thomas Muir was superintendent- general of education for Cape Colony from 1892 to 1915. SCIENCE 451 Tue University of Dublin will confer the honorary degree of master of surgery upon Dr. George E. Armstrong, professor of surgery at MeGill University, Montreal. Proressor Epwin G. Bortne, of Clark Uni- versity, gave a lecture at Wellesley College on April 18, on “The language of the emotions.” Dr. Max Puanck, professor of mathematical physics at Berlin, has been elected a foreign member of the Swedish Academy of Sciences, Stockholm. In order to secure scientific data on the value of moving pictures for use in teaching, the Commonwealth Fund, of New York, has given $10,000 for the use of Professor Frank N. Freeman, of the University of Chicago, in the systematic study of the educational value of various kinds of pictures. At the recent meeting of the German Micro- biologie Society, the annual prize from the Aronsohn Foundation, amounting to 25,000 marks, was awarded to Dr. J. Morgenroth, pro- fessor of bacteriology at the University of Berlin and chief of a department in the Koch Institute. Dr. R. D. Carman, of the Mayo Foundation, has been elected an honorary member of the Roentgen Society of London. Str GeRaLpD Epwarp CHApDwycK-HEALey, Bt., has been appointed a member of the Royal Commission on Awards to Inventors, to fill the vacancy caused by the resignation of Lord Rayleigh. Dr. C. S. Myurs has resigned from the direc- torship of the psychological laboratory of the University of Cambridge in order to devote his whole time to the work of the British National Institute of Industrial Psychology. FREDERICK W. Sperr, JR., chief chemist of the Koppers Company, Pittsburgh, Pa., has been awarded the Beal medal by the American Gas Association, in recognition of his work and paper, presented at the convention of the organization last November, entitled “The Sea- board Liquid Process of Gas Purification.” At a meeting held in Chicago on April 7, a Chicago Association for the Relief and Pre- vention of Heart Disease was formed to under- take the type of work carried on by similar 452 organizations in New York and Philadelphia. The following officers were elected: President, Dr. James B. Herrick; vice-president, Dr. R. B. Preble; secretary, Dr. Sidney Strauss; treasurer, Frank O. Hibbard. THe sixth annual clinical session of the American Congress on Internal Medicine held in Rochester, Minn., April 3 to 6, was attended by about three hundred physicians. Dr. Syd- ney R. Miller, of Baltimore, was re-elected president, and Dr. H. S. Plummer, of. Roches- ter, first vice-president of the organization. Proressor Harotp EH. Bascocx, of Cornell University, has sailed for Bermuda at the re- quest of the Colonial Government, and will remain there a month to assist the agricultural population of the islands to increase their efficiency in the production and distribution of their crops. Tue Entomological Club of Madison (Wis- consin) arranged for a radio phone lecture on “Bugs and Antenne” by Dr. E. P. Felt, state entomologist of New York, sent out by the broadeasting station of the General Electric Company at Schenectady on April 24. Mad- ison is well within the range of this station with fair conditions and the lecture could therefore be heard over much of the eastern United States and Canada. Dr. C. H. Mayo delivered the Joyce lecture in neurologic surgery before the Academy of Medicine at Portland, Oregon, and the Jerome Cochran lecture before a meeting of the Med- ical Association of the State of Alabama at Birmingham. Sir THomas Lewis will deliver the Noble Wiley Jones lectures under the auspices of the medical school of the University of Oregon between May 15 and 19. The lectures will deal with auricular fibrillation, quinidine and digitalis. Dr. P. CHALMERS MitrcHELL gave two lec- tures during March at the Royal Institution on “The cinema as a zoological method.” Tur Oxford Romanes lecture for 1922 will be delivered on May 24 by Professor A. 8. Eddington, Plumian professor of astronomy at Cambridge and president of the Royal Astro- nomical Society. The subject will be “The SCIENCE [Vou. LV, No. 1426 theory of relativity and its influence on scien- tifie thought.” Linean StrotHer RANDOLPH, consulting en- gineer and professor of mechanical engineer- ing at the Virginia Polytechnic Institute for twenty-five years, died on March 7, at the age of sixty-three years. GrorGE BaLtLarp MatTHEws, F.R.S., who was lecturer in pure mathematics and then pro- fessor of mathematics at the University College of North Wales, Bangor, from 1884 to 1896, has died at the age of sixty-one years. Tue death is announced, at the age of fifty- four years, of Professor Emil Heyn, director of the Kaiser Wilhelm Institut fiir Metall- forschung, Berlin-Dahlem. A FELLOWSHIP at the University of Man- chester for the encouragement of research in preventive medicine has been instituted in mem- ory of the late Auguste Sheridan Delépine, professor of public health and bacteriology in the university from 1891 to 1921. THE John Macoun Memorial Committee of the Ottawa Field Naturalists’ Club announces that, as the number of copies to be issued of the autobiography of the late Professor John Macoun, naturalist to the Geological Survey of Canada, is limited, orders, with or without the subscription price of $3.00, should be sent in by May 15, addressed to Mr. Arthur Gib- son, treasurer, John Macoun Memorial Com- mittee, Birks Building, Ottawa, Canada. THE Journal of the American Medical Asso- ciation says in regard to the centennial of the birth of Pasteur, who was professor of chem- istry at Strasbourg from 1852 to 1854, that two celebrations are planned in that city, one on the exact date, and another, with great cere- mony, on June 1, 1923, when an exhibition will be opened to demonstrate the progress that has been realized in consequence of Pasteur’s dis- coveries, and the Pasteur monument will be un- veiled. Professor Borrel, 3 rue Koeberlé, Strasbourg, is in charge of the exposition. The Academy of Medicine has decided to de- vote one of its sessions in honor of the work of Pasteur. As the Pasteur Institute intends to commemorate this anniversary on the exact date, December 27, 1922, the Academy of Medi- APRIL 28, 1922] cine has chosen December 26, the eve of the Pasteur Institute’s celebration, in order that the same guests may participate in the two ceremonies. At the session will be presented data showing the progress accomplished since Pasteur’s days in general biology, medicine, surgery, obstetrics, veterinary medicine and hygiene. Members of the academy who have been chosen to deliver addresses are: Widal, medicine; Delbet, surgery, Wallich, obstetrics; Barrier, veterinary medicine, and Calmette, hygiene. Tue United States National Museum has re- cently secured by purchase, through the co- operation of the United States Department of Agriculture, the large private herbarium of Dr. Otto Buchtien, formerly director of the Museo Nacional, La Paz, Bolivia, built up by him through many years of botanical explora- tion in South America and through exchanges with institutions in many parts of the world. The herbarium consists of approximately 45,000 specimens, and is notable for its large proportion of tropical American species, par- ticularly of the floras of Bolivia, Chile, Argen- tina and Paraguay. Tue thirty-fourth meeting of the German Society of Internal Medicine will be held at Wiesbaden from April 24 to April 27, under the presidency of Professor L. Brauer. The chief subjects for discussion will be jaundice, introduced by Professor Eppinger, of Vienna, and the hypophysis, introduced by Professor Biedl, of Prague. Tue American Medical Association an- nounces that the committee on therapeutic re- search of the Council on Pharmacy and Chem- istry will consider applications for grants to assist research in subjects which, in the opinion of the committee, are of practical interest to the medical profession, and which research might not otherwise be carried out because of lack of funds. Requests should state the spe- cifie problem which is to be studied, the quali- fications of the investigator, the facilities avail- able to him, and, if work is to be undertaken in an established research institution, the name of the individual who will have general super- vision. The committee will also appreciate offers from research workers to undertake in- SCIENCE 453 vestigations of questions which may be sug- gested by the council. Applications should be addressed to Chairman, Therapeutic Research Committee, Council on Pharmacy and Chem- istry, 535 North Dearborn Street, Chicago, Illinois. Iv is announced in La Géographie for No- vember 1921 that an attempt to cross the Sa- hara with twelve motor vehicles will shortly be made. The starting-point will be Tuggurt, the terminus of the Algerian railway, and the pro- posed route leads by Insalah, the Hogger re- gion, and Adar of the Iforas, to Bureni on the Niger, 200 kilometers east of Timbuktu. The leader of the expedition will be Command- ant Lafargue, and it will include a dozen mem- bers representing various government depart- ments and other interests, among them being a cinema operator. It is hoped that the difficulty caused by the evaporation of the motor spirit in so torrid a climate has been overcome, but it is pointed out that there is a vast difference between the exceptional use of motor traction in this region for a special purpose, which may be feasible, and its regular commercial use. Dr. Wauter Lippy, the historian of science, is delivering a novel series of lectures to the Industrial Fellows of the Mellon Institute of Industrial Research, the faculty members of the University of Pittsburgh, and the students of the graduate school of the university. The aim of this series of discourses is to discover the mental conditions of successful research. Dr. Libby takes account of certain phases of individual (or differential) psychology, deals with some of the more fruitful logical processes, and considers the means of stimulating the spirit of scientifie discovery. The illustrative material is drawn from the records of the progress of chemistry and other sciences. The following is an outline of the course of lectures: (1) The Scientific Imagination; (2) The Hypothesis; (3) Conceptual Thinking; (4) Induction (contrasted with Deduction); (5) Reasoning by Analogy; (6) The Nature of Cause; (7) Experiment and Observation; (8) Scientific Laws; (9) Social Stimulation of Investigation; (10) The Suggestive Value of the Industries; (11) The Classification of the Sciences; (12) The Genetic Method. Dr. 454 Libby devotes a part of each period, say, twenty minutes of the hour, to a colloquium or critical discussion of the nature and application of the subject under consideration. In this way scientific technic is deliberated upon in all its aspects. These lectures are being delivered from 8:30 to 9:30 am. on Tuesday of each week of the present university semester, in the Fellows’ Room of the Mellon Institute. UNIVERSITY AND EDUCATIONAL NOTES THE will of the late Miss Janet Williams, of Frederick, Md., contains a bequest of $30,000 to Hood College, to create and maintain an astronomical building in memory of her father, John H. Williams, to be known as the Williams Observatory. Fstivities are being planned for this spring in honor of the founding of the University of Padua in 1222. Professor Lucatello, the rector of the university, is in charge of the arrange- ments. Tur Japanese ambassador at Vienna has presented the sum of 6,500,000 crowns to the university as a personal donation in tribute to the scientific work being done there in spite of the unfavorable circumstances. Dr. Cuarence C. Lirrie was elected presi- dent of the University of Maine on April 7. Dr. Little graduated from Harvard in 1910 and received the doctor’s degree in 1914. In 1916 he became an assistant dean of Harvard Col- lege and research fellow in genetics for the Cancer Commission of Harvard University. Since his discharge from the army as major he has been research associate in the Station for Experimental Evolution of the Carnegie Institution. Dr. D. 8. Ropinson, assistant professor of philosophy at University of Wisconsin, has accepted the professorship of philosophy at Miami University. Dr. E. E. Powell has held the chair of philosophy since 1905 and resigns the chair at the close of this year to devote his time to writing. JoHN ArtEuR RanpauL, secretary of the Advisory Board of the General Staff of the War Department, has been appointed president SCIENCE [ Vou. LV, No. 1426 of Rochester Mechanics Institute. Mr. Randall was selected by the trustees to continue the development of a technical educational pro- gram containing liberal components. Dr. GeorceE THomAS, formerly professor of economics in the University of Utah and since 1921 superintendent of public education in Utah, has been installed as president of the university. DISCUSSION AND CORRESPOND- ENCE POPULAR SCIENCE To THE Epitor or Science: I am very much interested in Dr. Slosson’s letter about popular science writing which appears in Science for March 3, just received. Since some of my own information and experience is along this line it may be worth while for me to make some additional comment. I think that I can see a large number of conditions involved in the fact mentioned by Dr. Slosson that there is a dearth of popular science writers in this country, but I shall only discuss one or two of them. First and fore- most is the malodorous condition of the popu- lar science field which for some time has been so largely and so conspicuously oceupied by fabricators, exaggeraters, emotionalists, 1gnora- muses and exploiters that many people of training and ability hesitate to enter. Fur- thermore if an entrance is attempted by use of an informative article of clarity and real merit the author may have the humiliation of seeing his work rejected for that of some ir- responsible clown or gaudy sentimentalist who is successful in assembling a group of highly stimulating words (“lots of pep”) which may or may not have some relation to fact. Even more important than such discourage- ment to potential writers is the effect of lax, inaccurate and falsified statement of scientific material upon the reading public. I am sure that for a period of fifty years more hoaxes have been perpetrated by newspapers in the name of science than in any other way. As much as thirty years ago most intelligent people were suspicious of material presented by the public press as science. In the last APRIL 28, 1922] twenty years this suspicion has been more than justified and many intelligent readers say they either do not read or do not believe the stuff peddled as science by most newspapers. Under such conditions why should the reading pub- hie take any interest in popular science writ- ing? For killing this interest the press ser- vices, feature syndicates and syndicated news- papers (aided and abetted by renegade scien- tists and pseudo-scientists) are to blame rather than individual newspapers. This is partly because of commercialized ideas of service, | partly because of the mass of material handled and partly because of remoteness from contact with the reading public. The lack of interest in scientific matter is also probably increased to some extent by the fact which Dr. Slosson mentions as making it appear strange, 7. e., the increased teaching of science in our schools. The well informed student is thereby made more critical of the material presented. At the same time his par- ents become more cautious in reading or re- ferring to it because they fear his ridicule when some point is raised involving inaccurate or garbled press reports. In my own case I admit very freely that I am fully in sympathy with the man who hesi- tates to try popular science writing because of its unsavory reputation. I sometimes have a very distinct feeling of disgust when I find an article which I have tried to compose ac- curately and which I have taken especial pains to verify, printed in close proximity to one of the florid, vacuous, or untruthful type. On the other hand there is a lot of satisfaction when it gets on the editorial page in dignified company, as sometimes occurs. For nearly three years our institution has been sending out to a number of California newspapers (our present mailing list is fifty- three) biological feature articles written by myself. These have been sent at intervals of one or two weeks free of charge, partly as a matter of experiment but mainly as a sort of university extension activity. We are con- vineed that the service has educational value and that it is helping to popularize true scienee. I have myself been surprised at times by the interest expressed in certain articles SCIENCE 455 by people whom I would not have expected to read them, much less express appreciation of them. I have personally interviewed about sixty editors and have had interesting corres- pondence with others. A large number have shown such interest in my material that I am convinced that the general public is interested in good stuff if properly presented. If eight or nine out of every ten editors express in- terest in carefully verified scientific material written in popular (non technical and simple and direct) style I am inclined to think that a similar percentage of intelligent readers will do so if one will take time to gain their confidence. I appreciate the difficulties confronting Dr. Slosson and Science Service and, like him, I am impatient at delay but when I think about how badly the American public has been served in regard to scientific news I realize that it will take long and hard work by a lot of people to get popular science writing on a basis to inspire confidence. There is always the risk that one who finds he can write in popular style will become more interested in the popular side of it than in the science (truth telling) side of writing and will become unreliable, as has often occurred in the past. Hence it is quite evident that the great need is not only for writers of popular style, of scien- tifie training and ability, but also of high ideals of service which can not be broken down under the stress of temptation. W. BE. ALLEN Scripps INSTITUTION FOR BIOLOGICAL RESEARCH TWO NEW WESTERN WEEDS Durine the past year two plants, which threaten to become weeds of some importance in the arid and alkaline regions of the West, have been received from the western states. One of these is Bassia hyssopifolia (Pall.) Kuntze, a member of the family Chenopodi- ace, originally described from the region of the Caspian Sea. It apparently has never been re- corded as occurring in this country. The first collection was made at Fallon, Nevada, July 28, 1919, by Ivar Tidestrom (No. 10755), and a considerable amount of material for distribu- tion has recently heen sent me by F. B. Head- 456 ley, superintendent of the Newlands Experiment Farm, Fallon, Nevada, which he collected at that place in August, 1921. Mr. Headley re- ports that the plant is becoming very abundant in that section, but that it has not yet invaded fields of growing crops on good soil, so that it may not prove to be a serious pest. It makes a rank growth on soil which is too alkaline for the usual cultivated crops, and is found in fields which have received no irrigation as well as in those which have been frequently irrigated. Additional specimens have recently been re-. ceived at the U. S. National Herbarium col- lected by Professor H. M. Hall (No. 11751) at Los Bafios, Merced County, California, Octo- ber 10, 1921, and by Elias Nelson (No. 1002) at Yakima, Washington, October 3, 1921. Mr. Nelson reports that this plant has appeared during the past five years in the Yakima Val- ley, where it is spreading, and that it is eaten greedily by stock. Bassia hyssopifolia is an annual, with much the habit of Chenopodium album. The flowers are glomerulate in the axils of small bracts, and are borne in short or elongate slender paniculately arranged woolly spikes, at first usually dense, later elongate and interrupted. Each of the five perianth segments at maturity bears on its back a spine incurved into a hook. A second weed which apparently has not been reported from this country is Centaurea picris Pall., also a native of the Caucasus. Specimens were first recived in May, 1921, from Mr. C. O. Townsend, who reported that the plant was said to be a bad weed in the vicinity of Salt Lake City. Specimens from Idaho Falls, Idaho, collected by Miss Ayres of the Idaho Seed Laboratory, have been forwarded during the past year to Mr. E. Brown of the United States Department of Agriculture by Miss Anna M. Lute of the Colorado Seed La- boratory. Miss Ayres reports that the plant is becoming a serious pest in some parts of Idaho. The species has also been collected dur- ing the past year at Clifton, Kansas, by Mr. J. W. Head. Mrs. E. P. Harling of the Kan- sas State Agricultural College, who has in- vestigated this occurrence, believes that the species may have been introduced in Turkestan SCIENCE [Vou. LV, No. 1426 alfalfa seed. The only North American speci- men in the National Herbarium is one collected at Courtney, Missouri, in 1914, by B. F. Bush (No. 7152). Centaurea picris is one of the knapweeds or star-thistles of the Old World, numbering . several hundred species, some of which have be- - come weeds in this country, while a few others are cultivated for their flowers or foliage. It is a several-stemmed perennial, somewhat to- mentose or glabrate, with pinnatifid or dentate lower leaves, smaller and entire upper ones, and rosy or pink medium-sized discoid heads, and is especially characterized among the species known from this country by its in- volucral characters. The phyllaries are round- ish to oblong, with greenish bases and scarious whitish obtuse to acuminate entire or subentire appendages, those of the inner phyllaries some- what pilose. It is evident that both of these plants find in the arid alkaline regions of the West a habitat similar to that of their Old World home, and unless measures are taken for their destruction, they may become serious pests, as has been the case in recent years with such plants as the “Russian thistle’ (Salsola pestifer) and the prickly lettuce (Lactuca scariola integrata). S. F. Buake BuREAU oF PLANT INDUSTRY, WASHINGTON, D. C. CAT-TAIL (TYPHA LATIFOLIA) AS A FEED EXPERIMENTS conducted on the writer’s farm demonstrate the practical value of cat-tail as a feed for hogs. Sixty head were turned into a three-acre cat-tail swamp, and obtained suf- ficient nutriment from the rhizomes to keep them in good flesh for three months. No ill- ness or digestive disturbance was noted. The following table compares yellow (raw) corn with eat-tail flour, as analyzed by J. A. Le Clere: Corn Cat-tail MOIS CUT Cy ee ee eee ee 6.96 7.35 Agha e ea a eee 0.82 2.84 Matis Me EE Ee 2.82 0.65 Protein Me 7.75 Carbohydrate) esse ee 80.83 81.41 The large amount of food material contained APRIL 28, 1922] in the starchy central core of the typha rhizome was shown by A. P. Claassen, who estimated that one acre would yield a total dry weight of 10,792. pounds of cat-tail rhizomes, or more than two tons of flour, made from the central core. Typha may be used as a substitute for high- priced corn. It would seem that the best time for feeding would be in the fall and winter, as the starchy content is likely to be highest then. L. HE. FREUDENTHAL RosaLig FARM, Las Cruces, New Mrxico SOIL SHIFTING AND DEPOSITS Mr. Preterson’s article on deposition of soil in the Palouse area of eastern Washington and Idaho, which appeared in Science, Janu- ary 27, 1922, should prove of interest and value to foresters as well as agriculturists in this region. The questions naturally arise: How far is this soil carried into the Bitter- root mountains, and how does it influence the character of the soil and vegetation within the forest areas? The writer’s observations in this respect may be of interest in this connection. Dust storms, commonly referred to as “Palousers,” are of comparatively frequent occurrence throughout northern Idaho and northwestern Montana. They accompany high winds from the west and southwest; they are well known and despised by housekeepers in Kalispell, Missoula, Thompson Falls, Libby and all surrounding towns. The dust pene- trates into every house and office. When ac- companied by rain the window panes and buildings are besmirched with streaks of red soil. One of these storms in March, 1917, laid down on the snow within the timbered region of northern Idaho about 600 pounds of dust per acre. The dust from that storm hung on the trees, even at 6,000 feet elevation, along the Kootenai-Priest Divide throughout the summer of 1917. Settlers say that dust storms are common along the Coeur d’Alene, St. Joe and Clearwater rivers. The writer has noted ,the billowy soil sur- face, unmistakably due to surface shifting of the soil, as far east as Pierce, Idaho, about SCIENCE 457 eighty miles east of Moscow. The soil is un- usually deep and fertile and the vegetation is more profuse, with better growth of timber, over the larger portion of the Clearwater For- est in Idaho than occurs on the forests farther north or on the forests of western Montana. It is of interest to note that the Clearwater forest lies directly in the path of the strong west winds from the arid parts along the Columbia River, and that Lewis and Clark, as early as 1806, called attention to the un- usually deep and seemingly fertile soil in the Clearwater basin. These observations lead to the supposition that the accumulation and shifting of soil on the Palouse area have been effective in pre- venting natural establishment of the forest here in the past, though climatic records indicate that the area should grow western yellow pine; and they strengthen the belief that the un- usually good growth of timber, profuse vegeta- tion, and deep soils on certain parts of the western slopes of the Bitterroot mountains in Idaho, are due partly to the fact that soil is carried in by the westerly winds from lava plateaus along the Snake and Columbia rivers. J. A. LARSEN MissouLta, MonrTaNna QUOTATIONS AN INTERNATIONAL LANGUAGE THERE is an increasing demand among scien- tifie men for international agreement as to the choice of a universal auxiliary language. After a long struggle, many of the fundamental tools of thought have been unified. All nations now use the same system of numbers, Arabic numerals, measurements of latitude and longi- tude, mathematical symbols, chemical formule, and, at least in science, the metrie system. But language, the master-key to thought and the vehicle of communication, remains under the curse of Babel. Were it possible by acquir- ing a second language in addition to the natal language to convey ideas to fellow-workers in every part of the world and to receive their ideas, one of the greatest barriers to the prog- ress of science would be broken down. Time and money would be saved, overlapping of 458 effort prevented, and precision of ideas would be assisted. For many years there have been efforts to- wards the establishment of an international language, but chiefly by private persons or by associations formed directly for that purpose. Since 1919, however, governmental, scientific, and international bodies have given serious attention to the practical possibilities. At the meeting of the International Research Council, held in Brussels in the first summer after the war, a committee was appointed to investigate and report on the general problem of an inter- national auxiliary language, and to cooperate with similar bodies established or that might be established for the same purpose. The Section for Education of the British ’ Association at the Bournemouth meeting ap- pointed a committee which reported to the Edinburgh meeting last autumn. The Amer- ican Association soon afterwards took a sim- ilar step, and its report was presented to the meeting at Toronto last December. The French and Italian Associations have also appointed committees, but as yet these have not issued reports. The delegates representing 12 states presented a resolution in the Assembly of the League of Nations last September taking the definite step of recommending Esperanto, and hoping that the teaching of that language would be made more general in the whole world, so that children of all countries might know at least two languages. In accordance with the procedure of the league, this motion was referred to a committee under the chairmanship of Lord Robert Cecil. The committee was of the opinion that the question, in which “an ever-increasing number of great states’ was interested, should be studied attentively before being dealt with by the Assembly. Accordingly, it is being studied by the secretariat. The British Association committee went further, and definitely recom- mended the choice of an artificial language, but hesitated to decide between those which have been invented. The American Association recognized the “need and timeliness of funda- mental research on the scientifie principles which must underlie the formation, standardiza- tion, and introduction of an international SCIENCE [Vou. LV, No. 1426 auxiliary language,’”’ and recommended further study. These various bodies are free from the sus- picion of advocating serious study of what might be regarded as a “fad.” It is fair to accept their action as witness to the urgency of the problem. There is also evidence of their agreement that an auxiliary language, if it is to serve its purpose, must receive almost uni- versal adoption. The only suggestions which have received sufficient support to be ranked as serious ean- didates are Latin, English, Esperanto, and Ido. Latin was at one time the common medium of many nations and has retained a wide currency, directly in religion, less directly in some branches of science, and as the basis of the Romance languages. It is elegant and concise, has a definite system of forming new com- pounds and derivatives, and, as a dead lan- guage, its roots have unchanging significance. But its grammar is difficult; it has many ex- ceptions and irregularities. The revival of Latin would require the coining of a very large number of new words. English is widely used and is spreading rap- idly; its grammar is relatively simple and its vocabulary is rich. But the choice of one among many widespread living tongues would excite a just jealousy. Its spelling is chaotie, and its pronunciation difficult and various. Moreover, a living language reflects the chang- ing activities and emotions of the people who use if in literature and in daily speech, and is therefore unsuited as a vehicle for the cold and precise exchange of international knowl- edge. The language Esperanto has already made great progress as an interna- tional auxiliary tongue; it has held 12 inter- national congresses in different countries; it is taught in sehools in Geneva, Breslau, Milan, Czecho-Slovakia, and Bulgaria. Its grammar, pronunciation, and method of word-building are simple, scientific, and easy to acquire, and its root-words have been carefully selected. Ido claims to be a later and improved form of Esperanto; hitherto it has had a smaller vogue, but in appearance and sound it is more attrac- tive. invented Aprit 28, 1922 The balance of advantages seems to lie with the selection of either Esperanto or Ido or some modification of them recommended by experts on language. The vital requirement is that the auxiliary language should be kept auxiliary, the vehicle of formal statement. If it should become a language of common speech, of emo- tion, or of literature it will at once fail of its purpose and be only an additional linguistic burden.—London Times. SPECIAL ARTICLES ATOMIC STRUCTURE Tere has been considerable discussion in the literature, during the past few months, of the Lewis theory of atomic structuret and Langmuir’s extension of it to the heavy ele- ments.” In 1919 and 1920 the writer worked out a somewhat different extension of this theory. Jor various reasons its publication has been delayed, but in a few months a paper deseribing it in some detail is to appear. Be- cause of this delay, a short outline of the theory may not be out of place here. The number of electrons in each shell of the lighter atoms is the same as in the original Lewis theory. It is assumed, however, that the fifth, sixth, seventh and eighth electrons in the second and third shells pair off with the first four, the distance between the electrons in each of these pairs, and also in each pair formed by bonding between atoms, being much less than the distance between pairs. These shells are therefore tetrahedra of pairs instead of cubes of single electrons.* The electrons in each shell (after the second) tend to be placed opposite the centers of the faces of the imag- inary polyhedron formed by the electron groups in the underlying shell. If a certain shell is a tetrahedron, the next shell out will also be a tetrahedron; if the inner shell is a cube, the outer shell will be an octahedron (six points, eight faces); and if the smaller shell is an octahedron, it will be surrounded by a tetra- hedron—four of its eight faces then being oecupied—or by a eube. 1 J. Am. Chem. Soc., 38: 762 (1916). 2 Ibid., 41: 868 (1919). 3 Cf. Lewis, loc. cit., p. 779. SCIENCE 459 When the nuclear charge becomes sufficiently great, the same forces which cause pairing of electrons in nitrogen result in the formation of triplets in the inner shells of the heavier atoms. The type of force between electrons necessary to account for these phenomena is discussed in my longer paper and will not be considered here. As one after another of the outer electrons are drawn into an inner shell to form triplets, the remaining pairs are pushed further and further from the nucleus. This may result in rearrangement of the kernel structure, as indicated in the examples of atomic structure given below. Often, in dif- ferent environments, different kernel structures are stable, some having more valence electrons and fewer triplets than others, ete. The structures resulting from the applica- tion of the foregoing ideas I shall represent by means of formule, in which the first paren- thesis represents the nucleus and indicates its charge, the remaining parentheses each repre- senting a shell of electrons, in order from the nucleus out. The number of electron-groups and the number of electrons in each group are indicated for every shell, except (in some eases) the valence shell. Formule for atoms and ions of some of the elements follow: H ( +1)() Hayy a@=-2)i2x1) C ( +6) (2x1) (4) Ne (+10) (2x1) (4x2) Cl [ (417) (2x1) (4x2) (4x2) ]- or [(+-17) (2x1) (8x2) |- A (+18) (2x1) (4x2) (4x2) or (418) (2x1) (8x2) Cot++ [ (427) (2x1) (6x 8+ 2x2) ]+++ Cutt [ (429) (2x1) (5x8 1x2) (4x2) ]++ Cut [ (+29) (2x1) (6x3) (4x2) J+ Zn++ [ (+30) (2x1) (6x3) (4x2) J++ Br- [(-+35) (2x1) (6x3) (8x2) ]- Kr (+36) (2x1) (6x3) (8x2) Ag+ [(+47) (2x1) (8x3) (6x2) (4x2) ]+ Sn (+50) (4x1) (8x3) (6x2) (4x2) (4) and (+50) (2x1) (6x3) (8x2) (6x2) (2) I- { (+53) (2x1) (8x3) (6x2) (8x2) ]- Xe (1-54) (2x1) (8x3) (6x2) (8x2) Ce (+58) (2x1) (8x3) (6x2) (8x2) (4) and (+58) (2x1) (8x3) (1x3 + 5x2) (8x2) (3) Lu (+71) (2x1) (8x3) (6x3) (8x8) (3) Ta (+783) (2x1) (8x3) (6x3) (8x3) (5) Aut [ (+79) (2x1) (8x3) (6x3) (8x2) (6x3) |+ 460 Hg (+80) (2x1) (8x3) (6x3) (8x2) (6x3) (2) and (+80) (2x1) (8x3) (6x3) (8x3) (6x2) Nt (+486) (2x1) (8x3) (6x3) (8x3) (6x3) or (86) (2x1) (8x3) (6x3) (8x2) (6x3) (4x2) These and similar formule for the other ele- ments express very satisfactorily their known chemical, physical and crystallographic prop- erties. By applying this theory to erystal structures, it has been found possible to deter- mine the arrangements of electrons in nearly all erystals for which the arrangements of atomic centers were already known, and also the atomic and electronic structures in many cases in which even the atomic marshalling was previously unknown. These structures furnish incontrovertible proof that this theory of atomie structure, fundamentally and in many of its details, is correct. An important part of the theory is the idea that a single bond may be formed not only by the attraction between two atoms, each of which contains an unpaired electron in its valence shell, the two single electrons forming a pair, but also by the attraction of an atom containing a “lone electronpair’—one not acting as a bond—for another capable of holding on to this lone pair. The following are typical re- actions of this type: H H i TeE (ihe -N: H —> H:N:H H H H H His On ae 2 NG == Or: Ha: Nigel " 2 -: oy) F : :PeB ei + [ata F:B:F F : F Hil H, psi Ore Ae Cos 1 6 : NH, —>| HN + Co : a mn ig 3 3 Zn++ + 4 :NH, > Bs ++ H.N : Zn : NH 3 3 SCIENCE [ Vou. LV, No. 1426 In the last two cases the lone pairs of the nitrogen atoms become bond pairs, assuming positions at octahedron corners opposite the six faces of the distorted cube of the cobalt kernel and at tetrahedron corners opposite the four previously unoccupied faces of the zine kernel octahedron (or, what is the same thing, oppo- site the four faces of the zine kernel tetra- hedron). We thus have an entirely satisfae- tory picture of Werner’s “auxiliary valencies” and “coordination numbers.” In some cases (e. g., in Ag(NH.,)*) all the faces of the kernel polyhedron are not occupied. (In the silver iodide erystal, each silver kernel is surrounded by four electronpairs at tetrahedron corners, showing its true coordination number to be four.) This theory has not yet been applied to the explanation of spectra; nor is it possible to give the exact positions of the electrons in each atom. These positions may in fact be merely the centers or foci of electronic orbits. In these and other respects the theory is still incomplete. Maurice L. Hueerns UNIVERSITY OF CALIFORNIA A SIMPLE BUBBLING HYDROGEN ELECTRODE Tue electrode described in this paper is the result of an attempt by the writer to combine the principles of the bubbling type of elec- trode with simplicity of construction and the necessity for only a small amount of solution. That this has been accomplished, seems to be apparent from a study of the accompanying diagram and the behavior of the electrode in numerous tests. Four models similar to the one shown in the diagram were constructed by the writer and compared with each other and a Bailey elec- trode. Various standard buffer solutions were tested and it was found that all electrodes gave results that agreed within .3 of a millivolt, which was the limit of accuracy of the gal- vanometer in the set up. While the models constructed by the writer require only about 1.5 ec. of solution, there seems to be no good reason why, with proper APRIL 28, 1922] precautions, they can not be constructed for smaller amounts of solution. This can be accom- plished, not by a smaller model of the same shape, but by making the bottom of the elec- trode vessel more conical in shape and taking particular precautions in sealing the electrode as near the base of the vessel as is conve- niently possible. It is not desirable to materially decrease the diameter of the upper portion of the electrode vessel, because in so doing, the bubbling process is seriously interfered with. CONSTRUCTION AND OPERATION The electrode vessel H was made by sealing a short piece of glass tubing to an ordinary three inch soda-lime tube. The glass tube was then bent into position to make the side arm, A. The electrode proper, which consists of a piece of platinum foil, was sealed as near the base of the main vessel as possible. The protruding end of the foil was bent into a loop and par- tially embedded in sealing wax to give added mechanical strength. The rubber stopper, D, is used to prevent the rapid diffusion of air into the electrode vessel. The support, S, shown in the diagram by means of dotted lines, was made from a No. 12, two-holed rubber stopper by cutting out the portion between the holes. After platinization of the electrode, about 1.5 ¢.e. of the solution to be tested are put SCIENCE. 461 into the electrode vessel, H. Purified hydrogen is bubbled through the solution by way of the side arm, A. Usually, about three minutes of bubbling are required for saturation. The diagram shows the electrode in position for a measurement. C represents the side arm of the calomel electrode, V, a vessel containing a saturated KCl solution, and B, a tube filled with saturated KCl and plugged at the smaller end with filter paper to prevent the too rapid siphoning of KCl from VY. When properly constructed, this electrode possesses the following features, which should make it applicable for quite general use: 1. Simplicity of construction. 2. Ease of operation. 3. Requires only a very small amount of solution for a determination. J. Roy Haase PENNSYLVANIA STATE COLLEGE THE OKLAHOMA ACADEMY OF SCIENCE THE tenth annual meeting was held in Okla- homa City, on February 10, and at the University of Oklahoma, Norman, on February 11, 1922. The following papers were read: Frsruary 10 Presidential address: The possibility of the re- demption of the Great Plains from its semi-arid condition: J. B. THOBURN. Some notes on the Bois Fort Chippewa of Minne- sota: ALBERT B. REAGAN. Identification of Anthoceros in the Oklahoma cryptogamic flora: M. M. WickHAM. Notes on the migration of Macrochelys lacertine: M. M. WickHam. Further notes on migration of Terrapene carolina in Oklahoma: M. M. WickHAmM. Identification of fresh water sponges in the Okla- homa fauna: M. M. WickHam. Red and white blood corpuscles and catalase in the blood of non-complement guinea pigs: L. B. Nice, A. J. Nem. and H. D. Moore. The regular tetrahedron in relation to its cube and other solids: Oscar INGoLp. Oklahoma geography in the high schools: C. J. BOLLINGER. The poisonous substance in cotton seed: MENAUL. The chemistry of the pecan: W. G. FRIEDEMANN. Pauu 462 Fresruary 11 Zoology Lecture Room, State University. Biology Section The egg-laying habits and early development of Haminea virescens (Sby.): A. RICHARDS. The acceleration of the cleavage rate of Haminea virescens (Sby.): A. RICHARDS. A third Christmas bird Census: NICE. Fate of leucocytes in the placental circulation: I. What prevents leucocytes of the maternal circulation from migrating into the fetal cir- culation? II. The réle of the syncytial layer of the chorionic villi. III. Importance of this investigation relative to inheritance of disease or immunity from disease: Jos. M. THURINGER. A new differential staining method for connective tissue combined with the ordinary hematozylin- eosin stain (Demonstration): Jos. M. Tau- RINGER. Effect of lime and organic matter on the root development and the yield of alfalfa on the so-called hard-pan subsoils of Oklahoma: M. A. BEESON. Notes on the parasite fauna: JoHN E. GUBERLET. A preliminary note on the optic tract of eyeless flies: Minprep H. Ricwarps and Esruer Y. FURROW. Marcarer M. Mitotic index of the chick: Auprry FQLitcH SHULTZ. Somatic mutations and elytral mosaics wm Bruchus: J. K. BREITENBECKER. A preliminary report on the genetics of a red spotted sex limited mutation in Bruchus: C. Ler Furrow. A preliminary note on the chromosome number in the spermatacite of Bruchus: FRANK G. Brooks. The grand period of growth of root-hairs (Lan- tern): R. E. JErrs. Continuous culture of oats versus rotation: H. S. MurPHY. Multiple adenomata of the kidney cortex with special reference to histogenesis: JULIA STEELE ELEY. Sarurpay, Frsruary 11, 9:30 A.M. Geology Section Physiographic history of the Arbuckle Moun- tains: S. WEIDMAN. Some observations of erosion and transportation in the Wichita Mountain areca: OrEN F. Evans. Subsurface studies: R. D. ReEeEp. An Oklahoma meteorite: A. C. SHEAD. Robberson oil field: Lron ENGuisH. Discussion by Rocer Dennison and ArTHUR MEYER. SCIENCE [ Vou. LV, No. 1426 Percentage of square mile of oil production in Oklahoma: Bess M. Mints. Oklahoma oil resources: C. W. SHANNON. A new variant of the hidden treasure myth: C. H. Gout. \ The Webber’s Falls limestone: J. B. THOBURN. AFTERNOON SESSION, 1:15 p.m., SATURDAY, FEBRUARY 11 Room 308, Geology Building. Sykes Alaskan expedition of the University of Oklahoma of 1921: Ep. CRABB. A note on the economic status of the bald eagle in Alaska: Ep. Crass. On the intensity of the sound as measured by Rayleigh disc or a Webster phonometer: J. H. CLoup (Read by title). The simple rigidity of a drawn tungsten wire at incandescent temperature: WM. SCHRIEVER. Economics and Government International exchange: A. B. ADAMS. Responsibility in state government: F. F. BLACHLY. Public health administration in Miriam OaTMAN-BLACHLY. Oklahoma: Psychology Self-taught arithmetic from the age of five to seven and a half: Sopuiz R. A. Court. Further notes on eighteen-months vocabularies: Miriam OaTMAN-BLACHLY. A child that would not talk: Marcarret M. NIce. The following resolutions were adopted: 1. Wuereas, It is to the best interest of the American people to have research in all branches of science proceed unhampered, the Oklahoma Academy of Science places itself on record against the provision in the Fordney tariff bill now pending in the United States Senate which puts a tariff on books, magazines and scientific apparatus. 2. WHEREAS, It is highly desirable to conserve the natural resources of our state, the Oklahoma Academy of Science places itself on record favor- ing the work of the Oklahoma State Forestry Association. The following officers were elected for the en- suing year: President: R. O. Whitenton, Stillwater. First Vice-president: S. Weidman, Norman. Second Vice-president: W. G. Friedemann, Stillwater. Secretary: L. B. Nice, Norman. Treasurer: H. C. Roys, Norman. Curator: Fred Bullard, Norman. L. B. Nick, Secretary. NorMAN, OKLAHOMA SCIENCE NEw SERIES 99 SINGLE CoprEs, 15 Crs. Vou. LV, No. 1427 Fripay, May 5, 1922 ANNUAL SUBSCRIPTION, $6.00 Ranson’s Anatomy eu of the Nervous System Dr. Ranson presents anatomy of the nervous system from the dynamic rather than the static point of view; that is to say, he lays emphasis jon the developmental and functional significance of structure. The student is thus led at the very beginning of his neurologic studies to think of the nervous system in its relation to the rest of the living organism. This method not only makes the subject interesting, but makes more easy the correlation of the various neurologic courses. An outline for a laboratory course in neuro-anatomy is included. The text is fully illustrated, there being 260 illustrations, some of them in colors. Octavo of 395 pages, illustrated. By Strparn W. Ranson, M.D., Ph.D., Professor of Anatomy in Northwestern University Medical School, Chicago. Cloth, $6.50 net. Fe 2 o Jordan’s General Bacteriology GENRE BSETON In this work there are extensive chapters on methods of studying bacteria, including staining, biochemical tests, cultures, etc.; on development and composition of bacteria; on enzymes and fermentation products; on the bacterial production of pigment, ‘acid, and alkali; and on ptomains and toxins. Octavo of 744 pages, illustrated. By Epwin O. Jorpan, Ph.D., Professor of Bacteriology in the University of Chicago. Cloth, $5.00 net. Fred’s Soil Bacteriology The exercises described in this book are arranged primarily for students of soil bacteri- ology, soil chemistry and physics, and plant pathology. As far as possible the experi- ments are planned to give quantitative results. It is truly a valuable laboratory manual —worked out by a teacher and based on the student’s needs. 12mo of 170 pages, illustrated. By E. B. Frep, Ph.D., Associate Professor of Agricultural Bacteriology, College of Agriculture, University of Wisconsin. Cloth, $1.50 net. Prentiss and Arey’s Embryology rune eprrion This work has been extensively revised and entirely reset. The actual descriptions have been recast and rearranged, a new chapter on the morphogenesis of the skeleton and muscles has been included, and thirty-nine illustrations replace or supplement certain of those in the former edition. The illustrations form an instructive feature. Large octavo of 411 pages, with 388 illustrations. By Cuartes W. Prentiss, Ph.D., formerly Professor of Microscopic Anatomy, and Lrstiz B. Arty, Ph.D., Professor of Microscopic Anatomy, Northwestern University. Cloth, $5.50 net. W. B. SAUNDERS COMPANY, West Washington Sq., Phila. ii SCIENCE—ADVERTISEMENTS Leading Texts on Physiological Chemistry Practical Physiological Chemistry By SYDNEY W. COLE, M.A., Trinity College, Cambridge; University Lecturer in Medical Chemistry, Cam- bridge; Introductions by Prof. F. G. HOPKINS, M.B., D.Sc., F.R.C.P., F.R.S., Professor of Biochemistry, Fel- low and Prelector of Trinity College, etc., Cambridge. 400 pages, 5%2x8%%, illustrated with tables, charts, and 55 line cuts. Fifth revised, enlarged edi- tion. Price, silk cloth binding, $4.50. The fifth edition has been completely revised, making practically a new book. All obsolete methods have been eliminated and only tried and proven methods as outlined in the course at Cambridge have been given. All the modern methods in biochemistry are given in detail. The procedures are not copied from other works, butare the result of first-hand acquaintance with the subject matter. The author has prepared his text at the laboratory bench, step by step—any method that seems doubtful or difficult of attainment has been eliminated. While the book is practical, there is reference to theory and to the actual significance of results. A valuable book for the student, practitioner of medicine, research worker, for one who seeks for accurate and full descriptions of biochemical researches, and for students in agricultural laboratory work,. and in the study of animal nutrition. Physiological Abstracts, August, 1919 “This completely revised and enlarged edition of the author’s well-known textbook should receive a gen- eral welcome from biological chemists and physiologists. ..... It is well illustrated, and the experimental tech- nique is described in an unusually clear manner.” AN INTERMEDIATE TEXTBOOK OF Physiological Chemistry By C. J. V. PETTIBONE, Ph.D., Assistant Professor of Physiological Chemistry in the Medical School of the University of Minnesota. 328 pages, 6x9, with illustrations. Price, silk cloth binding, $3.25. The plan of this book is to cover as completely as possible in a brief but adequate manner the general field of physiological chemistry, so that the student or physician may obtain a clear idea of the properties of the compounds which are physiologically important—carbohydrates, fats, proteins, inorganic material, of the processes of digestion, and the action of enzymes, the com- position of some common foods and important tissues, the composition and analysis of the urine, and lastly, a review of the present status of metabolism, including its more modern aspects. The average physiological chemistry at present available is so large that the student or physician is lost in a mass of details or conflicting evidence. The author has aimed in this volume to set forth the present status of physiological chemistry as clearly and concisely as possible, in the belief that a large number of people will find a book of this type useful and valuable for acquir- ing or refreshing information in this important field. The appended laboratory work is arranged to cover the important phases of the subject, including the quantitative analysis of the urine. Now the required text in leading medical schools. OE~ Send for these up-to-date books today. Correspondence in regard to same especially invited from teachers. C. V. MOSBY CO.-Publishers //“...." Medical—Dental—Surgical—Pharmaceutical vi sc eee cs Please send me books checked: Cole—$4.50 Pettibone—$3.25 801-809 Metropolitan Building ee for which I enclose my check ST. LOUIS - - - - - - U.S.A. —Nursing Books Ask for a copy of our complete 96-page illustrated catalogue of medi- cal, pharmaceutical, dental and nursing publications. SCIENCE A Weekly Journal devoted to the Advancement cf Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS 11 Liberty St., Utica, N. Y. Garrison, N. Y. New York City: Grand Central Terminal Annual Subscription, $6.00. Single Copies, 15 Cts. Entered as second-class matter January 21, 1922, at the Post Office at Utica, N. Y., under the Act of March 3, 1879. Vou. LV May 5, 1922 No. 1427 Hesperopithecus, the First Anthropoid Pri- mate found in America: Dr. HENRY FAIrR- IED O SBORNesescssiestecssetcnsusesncuccacsseenetecesssectacscess 463 The Medals and Dinner of the National Academy of Sciences: Dr. Epwin E. SLOSS ON jays ese are ae ee Eerie 465 The Edward C. Pickering Memorial: Pro- FESSOR S. A. MITCHELL. .....-..22.0c22eececeeccee eee 467 J. D. Mitchell: W. D, HOONTER...2022.0.0...-eeeeen 469 Scientific Events: Annual Tables of Constants; Alaska Penin- sula Fisheries Reservation; The Flora of Porto Rico; Expedition to the Fiji Islands ; The Section of Medical Sciences of the American Association; The Bécher Memo- rial Prize of the American Mathematical SO CTE Y eee eee Oe ee 469 SCventific) Notes) ANd; News. se 473 University and Educational Notes...............--..- 477 Discussion and Correspondence: The Futility of the Human Yolk Sac; Pro- FESSOR FREDERIC T. LEWIS. Deflection of Streams by Earth Rotation: PRoFEssoR W. M. Davis. Possible Cause of the Red Color of Potash Salts: Dr. W. C. PHALEN. Popular Science: Dr. Epwin E. Stosson.... 478 Scientific Books: Sharp’s Introduction to Cytology: Pro- TESSOR ©) Hy MeCnunGin eee ee 482 Special Articles: Continuous Renewal of Nutrient Solution for Plants in Water Cultures: Dr. Sam F. TRELEASE and Proressor Burton E. Liv- INGSTON. The Synthesis of Ethyl Butyrate in Egg Secretion: Proressor OTTo GLASER 483 The National Academy of Sciences..................-. 486 HESPEROPITHECUS, THE FIRST AN- THROPOID PRIMATE FOUND IN AMERICA Ir is hard to believe that a single small water-worn tooth, 10.5 mm. by 11 mm. in crown diameter, can signalize the arrival of the anthropeid Primates in North America in Pliocene time. We have been eagerly antici- pating some discovery of this kind, but were not prepared for such convincing evidence of the close faunal relationship between eastern Asia and western North America as is revealed by this diminutive specimen. The entire credit for the discovery belongs to Mr. Harold J. Cook, consulting geologist, of Agate, Nebraska, who has been contributing for many years to our knowledge of the extinct fauna of Ne- braska through both his discoveries and his writings. He wrote to the present author (February 25, 1922): I have had here, for some little time, a molar tooth from the Upper, or Hipparion phase of the Snake Creek beds, that very closely approaches the human type. It was found associated with the other typical fossils of the Snake Creek, and is mineralized in the same fashion as they are. I sent a brief description of this to Professor Loomis a short time before the Amherst meeting of this year, with a request that it be read at that time, if opportunity offered. The manuscript was returned to me here immediately after the meetings, but with no notation as to whether it was read or not, or presented at that time in any fashion. Inasmuch as you are particularly interested in this problem and, in collaboration with Dr. Greg- ory and others, are in the best position of any one to accurately determine the relationships of this tooth, if it can be done, I will be glad to send it on to you, should you care to examine and study it. Whatever it is, it is certainly a contem- porary fossil of the Upper Snake Creek horizon, and it agrees far more closely with the anthropoid- human molar, than that of any other mammal known. 464 On receiving the tooth, the author tele- graphed (March 14, 1922): “Tooth just ar- rived safely. Looks very promising. Will report immediately.” A letter followed the same day: The instant your package arrived, I sat down with the tooth, in my window, and I said to my- self: ‘‘It looks one hundred per cent. anthro- poid.’’ I then took the tooth into Dr. Matthew’s room and we have been comparing it with all the books, all the casts and all the drawings, with the conclusion that it is the last right upper molar tooth of some higher Primate, but distinct from anything hitherto described. We await, however, Dr. Gregory’s verdict to-morrow morning; he cer- tainly has an eagle eye on Primate teeth. . . . We may cool down to-morrow, but it looks to me as if the first anthropoid ape of America had been found by the one man entitled to find it, namely, Harold J. Cook! On March 22, 1922, the author wrote: We believe we have found another one of the teeth, very much worn, of the same animal, which, so far as it goes, is confirmatory. The animal is certainly a new genus of anthropoid ape, probably an animal which wandered over here from Asia with the large south Asiatic element which has recently been discovered in our fauna by Merriam, Gidley and others. prises in the history of American paleontology and I am delighted that you are the man who found it. Our specimen is unrecognizable, it is so much worn. It is one of the greatest sur- The tooth arrived with the following label: One Molar Tooth, ?Anthropoid, No. HC425, Collection of Harold J. Cook, Agate, Nebraska. Found in Upper Phase of Snake Creek Beds, Typical Locality, in position in gravels with other fossils. Following the examination by Dr. William D. Matthew and the author, who determined the tooth as a second or third upper molar of the right side of a new genus and species of anthropoid, the tooth was submitted to Curator William K. Gregory and Dr. Milo Hellman, both of whom have made a special study of the collections of human and anthropoid teeth in the American Museum and the United States National Museum. They reported (March 23, 1922) as follows: 1. Such a degree of wear is very rarely seen on m, and in view also of the marked difference in SCIENCE [Vou. LV, No. 1427 form of m%, we rather incline to the opinion that it is an m2. 2. The kind of wear shown in this tooth, which has an evenly concave surface (with- out humps representing the para- and metacones), has never been seen in an anthropoid tooth, and we are of the opinion that even in very old chim- panzees the outer half of the crown will be un- evenly worn. 3. The nearest in point of wearing surface is the supposed m2? attributed to Pithe- canthropus, also in form of roots. The strong hypocone in ‘‘ Pithecanthropus’’ and the absence of hypocone in the new specimen is not positively diagnostic, in view of the immense differences in the hypocone, both in apes and man. 4. On the whole, wwe think its nearest. resemblances are with ‘* Pithecanthropus’’ and with men rather than With apes. On the basis of these very careful studies, the author decided to make this tooth the type of the following new genus and species: Hesperopithecus haroldcookii,t new species This second upper molar tooth is very distant from the gorilla type, from the gibbon type, from the orang type; among existing anthropoid apes it is nearest to m2? of the chimpanzee, but the resemblance is still very remote. It is excluded from close affinity to the fossil Asiatic anthro- such as Dryopithecus .punjabicus, Paleopithecus sivalensis, and Sivapithecus, re- cently related to the human stem by Pilgrim. Its transverse diameter of 11 mm. is greater than its anteroposterior diameter of 10.5 mm. In the cor- responding human tooth, m?, of an American Indian, with which it is compared in Fig. 2, the transverse diameter is 12.5 mm., the anteropos- terior diameter is 11 mm. Thus the proportions of the molar crown of the Hesperopithecus type are about the same as those in the Homo sapiens © mongoloideus type. There is also a distant human resemblance in the molar pattern of Hespero- pithecus, as very skilfully portrayed (Fig. 1)? by the artist, Mrs. L. M. Sterling, to the low, basin- shaped, channeled crown in certain examples of Homo sapiens. But the Hesperopithecus molar cannot be said to resemble any known type of human molar very closely. The author agrees with Mr. Cook, with Dr. Hellman, and with Dr. Gregory, that it resembles the human type more closely than it does any known anthropoid ape poid apes, 1 The names signify an anthropoid of the West- ern World discovered by Mr. Harold J. Cook. 2 The illustrations will be published by the American Museum of Natural History. May 5, 1922] type; consequently it would be misleading to speak of this Hesperopithecus at present as an anthro- poid ape; it is a new and independent type of Primate, and we must seek more material before we can determine its relationships. It is cer- tainly not closely related to Pithecanthropus erectus in the structure of the erown, for Pithe- canthropus has a single, contracted crown in which the superior grinding surface has a limited crenu- lated basin, whereas Hesperopithecus has a widely open crown with broadly channeled or furrowed margins, and a postero-internal crest suggesting the hypocone of a higher Primate form. The dis- position of the roots in Hesperopithecus, in Homo, in Pithecanthropus, is shown to be very broadly similar in comparative Fig. 2. The Hesperopi- thecus molar is three-fanged, the postero-external fang having been broken off in the type; the internal fang shows a median internal groove and a tendency to a deep external groove on the outer side. Since 1908 there has been in the American Museum collection from this same horizon an- other small water-worn tooth, discovererd by Dr. William D. Matthew. The specimen. be- longed to an aged animal and is so water-worn that Dr. Matthew, while inclined to regard it as a Primate, did not venture to describe it. It now appears, from close comparison with the type of Hesperopithecus, to be closely re- lated generically, even if it is not related spe- cifically. The greatly enlarged drawing (Fig. 3), reproduced to the same seale as that of the type above described, shows that the molar pattern is fundamentally similar. The crown differs in its much more triangular form and, were it not for its extremely worn surface, we should unhesitatingly pronounce it as a third superior molar; it has, therefore, been given this position provisionally in the diagram; it seems to confirm the opinion of Gregory and Hellman that the type of Hesperopithecus is a second superior molar. The geologic age of these two specimens is now believed to be the same as that of Thou- sand Creek, Nevada, and Rattlesnake, Oregon, among the fauna of which Pliohippus is very abundant and varied; it also contains Tlingo- ceras and other strepsicerine antelopes of Asiatic affinity; it is the last American fauna in which occurred the rhinoceros, preceding the SCIENCE 465 Blanco fauna in whieh the Asiatie brevirostrine M. mirificus first oceurs. Henry Farrrretp OsBorRN AMERICAN MUSEUM or NaturRAL History, New York, N. Y. MEDALS AND DINNER OF THE NA- TIONAL ACADEMY OF SCIENCES At the annual dinner of the National Acad- emy of Sciences, held at the Hotel Powhatan on Tuesday evening, April 25, 1922, two medals were awarded. The J. Lawrence Smith Medal was bestowed upon Dr. George P. Merrill, curator of geology at the United States National Museum. This is a gold medal of the value of $200, from a fund established in 1884, as a reward for “original investigation of meteoric bodies.” But because investigators in this field are so rare it has not been given since 1888. Dy. Whitman Cross, in his speech presenting the medal, pointed out that Dr. Merrill had continued to carry on the work of his predecessor, J. Lawrence Smith, on meteorites by the application of modern methods of analysis. The earlier analyses of meteorites were not always to be relied upon, and Dr. Merrill in his long years of research has been able to show that some of the elements previously reported as having occurred in meteorites are absent and, at the same time, he has extended the list of elements and com- pounds that do exist in these bodies. Among other minerals he has found a ealeium phos- phate similar to apatite, which has been named in his honor Merrillite. Dr. Merrill also has discovered evidences of metamorphism in mete- orites, cases where a mineral structure has been broken up and the fragments later fused to- gether like the conglomerates found in igneous rocks in the earth’s erust. Dr. Merrill in receiving the medal said that meteorites had in all ages attracted a great deal of popular interest. In the earliest times they were worshipped as divine and nowadays the newspapers give great attention to any meteoric fall. Yet few scientists have made them the subject of concentrated and long- continued study. In his work, Dr. Merrill said 466 he had tried to keep his feet upon the earth as though his shoes had leaden soles and to leave to others premature speculation as to the origin of these bodies. It is evident from their composition that they come from regions where there was no air, for they contain iron, both in a free state and in compounds that are not stable in the presence of oxygen. From their structure it is evident that some have under- gone secondary igneous changes. In conelu- sion, Dr. Merrill quoted the verse, “All my dreams come true to other men,” and said that he would leave the developments and deduc- tions from his work to future investigators and “may all my dreams come true to other men.” The address bestowing the Daniel Giraud Elliot Medal for the year 1920 was made by Dr. Henry Fairfield Osborn, of the American Museum of Natural History, New York City. This medal is intended to be awarded every year for contemporary contributions to zoology. Previous awards were made to F. M. Chapman, C. W. Beebe and Robert Ridgway. Dr. Osborn sketched the history of paleontology from the time when Cuvier first announced the law of correlation. But the ability of the biologists to restore an extinct animal from a single bone was exaggerated and for a time such general theoretical work fell into disrepute. The great American paleontologists, Leidy, Cope and Marsh, limited themselves mostly to deserip- tion. But now again the time has come when general principles and relationships may be founded upon a more substantial basis. Among the young investigators who are taking up this work is Professor Othenio Abel, of Vienna, who has undertaken a general study of the causes of evolution. His guiding thought is that morphology depends upon physiology and that to understand a form we must know its function. Professor Abel pursued his studies even during the war when his family was in such distress that he had to send out his children to friends for food, and in 1920 he produced an inspiring work, entitled Methoden der Paleobiologischen Forschung. In the absence of Professor Abel the medal was received by Edgar L. G. Prochnik, Aus- trian chargé d’affaires, who said that all Austria would rejoice over this honor done to one of SCIENCE [Vou. LV, No. 1427 her citizens. Conditions in Austria are exceed- ingly hard at present on account of the curtail- ment of Austria’s resources and it is felt that the future of Austria lies in the mental power of her sons. The Austrian scientists are deter- mined to bring their country to the rank which she occupied in science and art previous to the war. The disposal of this medal was another proof that science was not limited in its scope to ereed or nationality. Professor Abel serves in the ranks of science, the peace maker. President Walcott, in handing over the medal to the representative of the Austrian Legation, said that the award would earry with it an honorarium which was to be forwarded to Pro- fessor Abel. Next, Dr. Vernon Kellogg, permanent secre- tary of the National Research Council, was called upon to tell something of the work and plans of that institution. The National Re- search Council, he said, was the child of the National Academy of Sciences, born in the tempestuous times of the war. The child had grown with amazing rapidity and had mani- fested the characteristic virtues and defects of lusty youth. Some of its parents—the use of this unconventional plural is justified by the collective parenthood—do not know whether to be proud of it or uncomfortably disturbed by it. The motto of the National Research Council is “cooperation and organization.” The latter word was looked upon with disfavor and even suspicion by some scientists, but, rightly under- stood, as the council interprets it, there was nothing to fear from it. He had recently been reading the reports of the visits that had been paid by members of the council to 150 universi- ties, colleges and other laboratories. In all these were found men earnestly engaged in re- search, often under disheartening conditions and in isolation. The National Research Council can aid and encourage these scattered and ill-equipped scientists to work out their plans in a concerted way. Nothing shall inter- fere with the individual freedom and initiative which are the main strength of scientific en- deavor. Apart from the endowment and build- ing fund, the National Research Council had raised over a million and a half dollars, which was being expended in promoting research May 5, 1922] work in various lines. Plans for the new building had been exhibited at this session of the academy. This building will cost about $1,300,000, this money being provided by the Carnegie Corporation, and $200,000 had been provided by a seore of private donors for the purchase of the ground. The edifice will be worthy of standing in the group of patriotic, philanthropic, international and memorial structures, and here the National Academy of Sciences and her daughter, the National Re- search Council, may live together in peace and happiness. The president then asked Dr. William H. Welch to speak on the new School of Hygiene and Public Health founded at Johns Hopkins University and endowed with six millions from the Rockefeller Foundation. Dr. Welch said that the prevention of disease in communi- ties as distinct from the cure of disease indi- vidually was comparatively a new profession. The beginning of the public health work may be traced back to the seventeenth century, when three great discoveries were made. One was Captain Cook’s success in preventing scurvy in his long voyage in the Pacific by the use of vegetable vitamines. The second was the dis- covery of the cause of ‘Devonshire colic,” which was found to be due to lead poisoning from the drawing of cider through lead pipes. The third was the introduction of vaccination for smallpox. The Napoleonic wars set back work in this direction as in others, but in the great reform year of 1848 the English Parlia- ment passed the Public Health Act. Then began a campaign directed against filth and for sanitation, water supply and sewage dis- posal. Now with our new knowledge of the causes of infection and epidemics, public health can be guarded as never before. Yellow fever has been swept from its old haunts, malarial fever can be controlled and typhoid has become so rare that it is difficult to teach it for want of cases.’ In Baltimore last year a single death from typhoid aroused great excitement among the students who were eager to attend the autopsy as the only opportunity they had to become acquainted with this disease. The new school is to be composed of men and women who are to make the prevention of disease the SCIENCE 467 primary aim of their life work. There are four members of the National Academy of Sciences in the faculty of the School of Hygiene and Public Health. At the close of the evening Dr. Hendrik Anton Lorentz, of the University of Leiden, was asked to speak and responded with charae- teristic geniality. He recalled his visit to the United States sixteen years ago and told how glad he was to accept the invitation of the Carnegie Institution of Washington and the California Institute of Technology, Pasadena, where he has been lecturing. Now on the eve of departure he expressed his gratitude for the kindness that had been showered upon him in various parts of the United States which was, he felt, more than he deserved and was, as he had discovered in some eases, due to the fact that he was taken for the Viennese surgeon, Dr. Lorenz. Everywhere he found earnest young men engaged in research which prom- ised great things for the future of science in America. He found nothing to criticize, but took the opportunity of suggesting that per- haps the strenuous life and feverish activity of Americans might be benefited by somewhat of the Dutch restfulness of his own land. Epwin EB. Stosson THE EDWARD C. PICKERING MEMORIAL THE wonders of the sky present such a fascinating appeal to the general public that large numbers of telescopes are sold each year to the amateur who with keen delight views the marvels of Saturn’s rings, the everchanging appearance of Jupiter and his satellites, and the glories of the nebula of Orion. These and many other objects are observed with the great- est of eagerness, and books on descriptive astronomy are bought and are read with great avidity. The pleasures brought by the new telescope are all the more enjoyed if the instru- ment arrives during the summer season. Then it may be taken out into the garden or on to the roof top and the pleasure is unalloyed by biting winds, cold hands or freezing feet. With the coming of autumn and winter the telescope is used less frequently, and the warmer weather of spring and summer is looked forward to 468 with anticipation. (The writer of this article looks back with anything but the keenest of joy to working for thirteen hours at night at the Yerkes Observatory with the thermometer at twenty-six degrees Fahrenheit below zero). Very frequently the keenness of the astro- nomical thrills becomes gradually dulled, the small telescope has not sufficient power to show the more remarkable objects in the sky, clouds and cold weather interfere with observing— and soon the telescope is brought out but sel- dom, and finally is offered for sale. Many of these amateur star-gazers might have had their interest continued if only their work at night could have had some object other than personal pleasure. The American Asso- ciation of Variable Star Observers has been of very great value to astronomy by organizing the owners of two-, three-, four- or five-inch telescopes and showing them how they can co- operate with the professional astronomer using larger telescopes to observe the class of objects in the sky known as variable stars. As their name signifies, these stars vary in_ bright- ness, sometimes being bright, sometimes much fainter. There are more than three thousand of such stars known in the the sky. The varia- tions of some stars like Betelgeuse, 8 Lyre or 6 Cephei can be followed by the naked eye, some of the stars at minimum brightness can be seen with a five-inch telescope, while others become so faint at minimum that they are almost or quite invisible in the largest telescope in existence. Some of these variables have a period from maximum to minimum which is quite short, measured by an interval of a few hours or a few days in length, some of the periods are measured in hundreds of days. Some of the periods are quite regular, some are very irregular. The well-known Algol changes in brightness by one component eclips- ing ‘the other. There are other stars like SS Cygni, V. Geminorum, and SS Aurige that are normally faint, and suddenly and for some reason for which as yet we have no adequate explanation greatly augment their brillianey, the last of the three named above may increase its brightness one hundredfold in twenty-four hours. There are thus many varie- ties of variable stars most of which need careful stars SCIENCE [Vou. LV, No. 1427 and systematic observation, and consequently an observing program can be chosen which can be adapted to the aperture of the telescope used. Largely through the enthusiastic efforts of Wm. Tyler Olcott of Norwich, Conn., the American Association of Variable Star Ob- servers (or the A. A. V. S. O.) was organized in 1911 with seven observers. In ten years the membership has grown to three hundred, and the total observations made has the amazing number of 120,000. The present plan of the A. A. V. 8. O. is that its members are observing systematically the changes in brightness of more than three hundred stars of long period. The stars under observation can be followed until with diminishing brightness they become invisible with the small apertures employed. These stars, however, can still be seen with telescopes of larger size in the hands of the professional astronomer. By a plan of coop- eration, therefore, the members of the A. A. V. 8S. O. can observe the variables when bright while Harvard with its twelve or fifteen- inch telescope and the McCormick Observatory with its still larger aperture of twenty-six inches can observe when faint, and thus the stars can be kept under almost continual ob- servation, except when the stars are too near the sun. Each month each observer sends his observations to Harvard College Observatory where the observations are collected together and are then published in Popular Astronomy. This immediate publication is of great value in keeping alive the interest of the amateur for each observer can see that his observations are of value in fixing the brightness of the stars and even the beginner can experience the thrill of finding that his observations perhaps fit in beautifully with the magnitudes determined by observers of greater skill. Professor Edward C. Pickering, the late director of Harvard College Observatory, was keenly enthusiastic about the work of the A. A. V. S. O. for he recognized the very great value of this organization. And now to per- petuate its work and to increase its value to astronomy the Association of Variable Star Observers is asking for an endowment to bear the name, the Edward C. Pickering Memorial. May 5, 1922] be entirely none of it The income from this fund is to devoted to variable star research, being required for “overhead” or for equip- ment. Through an arrangement with Pro- fessor Pickering’s successor, Dr. Harlow Shapley, Harvard College Observatory is to put the second floor of its library building at the disposal of the A. A. V. 8. O. for its offices, and is to allow the use of one of the domes on the observatory grounds to house the largest telescope owned by the association, that re- cently aequired through the generous gift of Mrs. C. A. Post of Bayport, L. I. Professor Pickering was so well known to members of the A. A. A. 8. and to readers of Science that it is felt that many will wish to contribute to such a worthy cause as the Ed- ward C. Pickering Memorial. Contributions should be sent to Wm. Tyler Olcott, Norwich, Conn., or to Leon Campbell, Harvard College Observatory, Cambridge, Mass. S. A. MircHEexu J. D. MITCHELL Mr. J. D. Mitcuen died at Victoria, Texas, on February 27, 1922. Some years ago when the writer was about to go to Texas for the first time, he made the rounds of a number of scientific offices at Washington to obtain such information as he could about the natural history of Texas. Wherever he went, whether to entomologists, ornithologists, ichthyologists or botanists, the same advice was given. That was to go to Victoria and see Mr. J. D. Mitchell. A man whose knowledge had made such a deep im- pression upon the leaders in several depart- ments of science must certainly have been in some degree remarkable. At Mr. Mitchell’s house in Victoria he had large collections of animals of all classes. From day to day the house was visited by ranchmen, doctors, school children and others to ask about various points connected with natural history. Thus, technical men as well as persons from the ordinary walks of life were alike influenced by the learning of the man. Mr. Mitchell lived for a good portion of his life on a eattle ranch on the coast of SCIENCE 469 . Texas. His love of natural history was in- herited from his mother, who had extensive knowledge of the plants of Texas and _ their practical uses. Later he moved to Victoria where circumstances gave him an opportunity to devote most of his time to work on nat- uval history. In 1904 he became connected with the Bureau of Entomology and made - important contributions to several of the larger southern problems like those of the cotton boll weevil and the eattle tick. In fact, his pioneer work on the cattle tick was an important factor in the notable project of eradication which now permanently removed the pest from more than three fourths of its original range in the United States. Mr. Mitchell had no technical training. He was an example of the vanishing type of de- voted naturalists who pursue the subject out of pure love for nature. He never described a new species. Although he collaborated on many publications of the Bureau of Ento- mology, he published only one paper, dealing with the poisonous snakes of Texas. Never- theless, it is fitting that this note about. his career should be published in this journal. He was a fountain of accurate information for technical men and was a modest, patient and painstaking imparter of knowledge. His life showed the enjoyment which comes from the contact with nature and was thus an in- spiration to others. has W. D. Hunter Houston, TEXAS SCIENTIFIC EVENTS ANNUAL TABLES OF CONSTANTS Tue confederation of French scientific so- cieties has renewed for the year 1922 its eon- tribution of 40,000 franes in support of An- nual Tables. The total subscription in France to this project during the year 1921 was 80,000 franes. At the approaching meeting of the Interna- tional Union of Pure and Applied Chemistry which is to be held at Lyons in June, the mat- ter of organizing the work of Annual Tables upon a solid financial basis will come up for consideration. This important international project has had a very precarious existence 470 since 1914 and the fact that the work has been continued at all has been due to the efforts of the general secretary, Dr. Charles Marie. Plans for providing a certain and sufficient budget for the work during the next five years are in preparation, based upon definite annual contributions from the various countries in the International Union. i It is announced that the National Research Council of Japan has appointed the following advisory committee for Annual Tables: Yasu- hiko Asahina, Hiji Aoyagi, Kotaro Honda, Katsuji Inouye, Gen-itsu Kita, Koichi Matsu- bara, Tsuruzo Matsumura, Seiji Nakamura, Kyoji Suyehiro, Umetaro Suzuki, Takuro Ta- maru, Mitsumarn Tsujimoto, Nobuji Yamaga, Noboru Yamaguti. The chairman of the com- mittee is Professor Yukichi Osaka, Japanese member of the International Commission in charge of Annual Tables. ALASKA PENINSULA FISHERIES RESERVATION Unner date of February 17, 1922, an Execu- tive order was promulgated creating the Alaska Peninsula Fisheries Reservation, extending east- ward from the Aleutian Islands Reservation to a line from Foggy Cape, on the eastern end of Sutwik Island, to Cape Menshikof, on the northern shore of the Alaska Peninsula, and in- cluding the Shumagin Islands and the terri- torial waters adjacent to these lands and also the lands of the Aleutian Islands Reservation. The Secretary of Commerce is given power to make regulations for the proper administration of the newly created reservation and the waters covered by the executive order. The text of the order follows: EXECUTIVE ORDER In addition to the islands of the Aleutian Chain, Alaska, withdrawn and made a preserve and breeding ground for native birds, for the propa- gation of reindeer and fur-bearing animals, and for the encouragement and development of fish- erties, by the executive order of March. 3, 1913 (No. 1733), as modified by the executive order of August 11, 1916 (No. 2442), a reservation comprising the islands, peninsulas, and lands ad- joining the eastern end of the reservation estab- lished by the said executive order of March 3, SCIENCE [Vou. LV, No. 1427 1918, and extending in an easterly and northerly direction from Isanotski Strait to a line extending from low-water mark at Foggy Cape, on the east- ern end of Sutwik Island, to low-water mark at Cape Menshikof, on the northern shore of the Alaska Peninsula, including the Shumagin Islands and all other islands, peninsulas, or parts thereof within the described area, is hereby set apart as a preserve to more effectively insure the protection: of the fisheries and for their encouragement and development. This latter reservation is to be known as the Alaska Peninsula Fisheries Reserva- tion. It is hereby further ordered that all straits, bays, and other waters over which the United States has jurisdiction by reason of their rela- tion and proximity to the islands, peninsulas, and other lands to which this order, as well as the said order of March 3, 1913, applies, be and the same are hereby reserved and set apart also as a pre- serve to more effectively insure the protection of the fisheries and for their encouragement and development. The secretary of commerce shall have power to make regulations for the proper administration of the said Alaska Peninsula Fisheries Reservation, and the straits, bays, and other waters reserved by this executive order. The establishment of the reservation under this executive order shall not interfere with the use of . the waters, islands, or other lands for lighthouse, military, naval, or other public purposes, nor with the use of any of said islands or other lands under the laws of the United States for town-site pur- poses, mining purposes, or grazing of animals thereupon, under rules and regulations to be estab- lished by the secretary of the interior. (Signed ) WARREN G. HARDING The White House, February 17, 1922. A hearing was ealled for April 4 at the bureau’s office in Seattle, when statements were received from those interested and information secured as a basis for regulations for the con- trol of fishing in the Alaska Peninsula Fisheries Reservation. THE FLORA OF PORTO RICO Dr. N. L. Brrrron, director in chief of the New York Botanical Garden, has returned from Porto Rico, after three months spent in an in- tensive study of the Porto Rican flora.) Dr. Britton reports a very successful trip and the May 5, 1922] collection of some 4,000. specimens. In addi- tion to collecting plants and specimens for the garden, the object of the expedition was the ob- taining of data for a flora of Porto Rico and the adjacent islands for publication by the New York Academy of Sciences, as parts of the sci- entific survey of Porto Rico and the Virgin Islands. This survey was commenced in 1913 by the New York Academy of Sciences in cooperation with the insular Government of Porto Rico, the American Museum of Natural History, the New York Botanical Garden, the department of geology and of anthropology of Columbia Uni- versity and with other American institutions. The work has been prosecuted since whenever practicable, but was much interrupted by the World War. In his report to the scientific di- rectors of the garden, Dr. Britton says of the accomplishments to date in connection with the survey: The materials brought together already have formed the basis of numerous noteworthy con- tributions to knowledge, published by learned soci- eties and by the cooperating institutions. Pub- lication of the final reports was begun by the Academy in 1919, and three parts of the geological volumes and two of paleontology have now been issued, under the editorship of Professor R. W. Tower of the American Museum of Natural His- tory. Additional parts of the geological volumes are now ready for the press, to be followed by those dealing with the botany and vegetable re- sources, the zoology, archeology and anthropology of the islands, as rapidly as funds for printing become available. The completion of the work will make the geology and natural history of Porto Rico and the Virgin Islands, insular posses- sions of the United States, the key to natural science knowledge of the West Indies. The objects of the trip as detailed by Dr. Britton on his return were to supplement infor- mation about the vegetation obtained during several previous visits to the region and from the study of many specimens obtained by other collectors in former years; to ascertain now that the geological field work in Porto Rico has been completed, such distribution of species as may be governed by soils of different mineral com- position, and to increase the representation of SCIENCE 471 Porto Rican plants in the collections of the gar- den, with duplicates for exchange with other botanical institutions. These objects were sat- isfactorily accomplished, he says, over consider- able areas of the island, special attention being given to the Northern and Southern Coastal Plains and to the higher mountain summits of the central districts. EXPEDITION TO THE FIJI ISLANDS A British government launch may be placed at the disposal of a party of scientifie men from the University of Iowa who will be in the Fiji Islands on a collecting expedition during June according to a letter to Professor C. C. Nutting from Mr. T. E. Fell, acting governor of Fiji. Professor Nutting is head of the expedition which will sail from Vancouver on May 19 to the Fijis and New Zealand to gather laboratory and museum material for the university. Mem- bers of the party are: Professor R. B. Wylie, head of the department of botany; Professor A. O. Thomas, geologist; Professor Dayton Stoner, entomologist and ornithologist; Mrs. Dayton Stoner, who will assist in entomology; Waldo §. Glock, photographer and assistant geologist; and Professor C. C. Nutting, director of the expedition, whose specialty is marine invertebrates. Arriving at Suva, Fiji Islands, about June 3, the party will be personally greeted by Governor Fell, who, as acting governor of Barbados at the time of the university’s Barbados-Antigua expedition in 1918, extended many courtesies to the members of that party, which was also in charge of Professor Nutting. The entire island of Makaluva, near Suva, has been placed at the disposal of the visitors, and the necessary buildings and equipment are conveniently at hand there. In addition to the launch the governor expresses his hope of hay- ing a small boat at hand for use in exploring the neighboring reefs, and arrangements are be- ing made in advance for divers and reef experts to aid the party. All scientific equipment is to be admitted free of duty. After remaining at Suva until early in July to make a study of Marine and tropical life, the 472 party will go to New Zealand, where animal and plant life and geological formations are of peculiar interest. The official secretary of New Zealand has written to say that everything possible will be done to make their stay in that country a success. It is expected that the re- turn voyage will end in Vancouver about Sep- tember 9 in time for the opening of the uni- versity. THE SECTION OF. MEDICAL SCIENCES OF THE AMERICAN ASSOCIATION Ir may be of some interest, in this period of co-ordination, to know that at the Toronto meet- ing a group of parasitologists, medical entomol- ogists and medical workers met and decided upon the following policy for Section N, Medi- eal Sciences : 1. That it was extremely desirable and nec- essary that a closer co-ordination between para- sitologists, entomologists and medical workers be worked out. 2. That the secretary of Section N (Medical Science), after consulation with the secretaries of the related societies, arrange for a program which will avoid conflicts with related groups. 3. That the secretaries of the allied societies, co-operating with the secretary of Section N (Medical Sciences), suggest those of its mem- bers who might be invited to take part in a symposium at which the significant researches are reported that are of interest to the alhed groups of workers. 4. It was deemed undesirable to attempt for the present any formal co-operation between these related societies. 5. That the time has come when there is a definite need for the discussion of such papers as affect the interests in the allied groups, both for stimulation and for information. 6. That each secretary so arrange the papers of its society’s program that it may be possible for its members to meet with Section N (Medi- cal Sciences) without too serious a loss. 7. That the joint meeting be held under the auspices of Section N (Medical Sciences). Section N (Medical Sciences) is proceeding SCIENCE [ Vou. LV, No. 1427 with this policy on the assumption that such arrangements will in no way conflict with any program that may be adopted at the Washing- ton conference, held under the auspices of the National Research Council. A. J. GOLDFARB, Secretary. THE BOCHER MEMORIAL PRIZE OF THE AMERICAN MATHEMATICAL SOCIETY THE American Mathematical Society an- nounces the foundation of a prize in memory of the late Professor Maxime Bocher, of Harvard University. Soon after the death of Professor Bocher, in 1918, a fund was raised in his mem- ory through the efforts of Professor T. S. Fiske, of Columbia University, which was turned over to the American Mathematical Society. On recommendation of a committee of which Pro- fessor E. B. Van Vleck, of the University of Wisconsin, was chairman, the council of the so- ciety has decided to devote the interest of this fund to the establishment of a prize, to be called the Bocher Memorial Prize, and to be awarded at five year intervals, for a notable research memoir published in the Transactions of the American Mathematical Society during the pre- ceding five years by a resident of the United States or Canada. The age of the recipient shall not be over forty years, and the prize shall not be awarded twice to the same person. The first award (of $100) is to be made for a memoir published during the period 1918-1922, and will be conferred at some meeting of the society in 1923. This prize, which is believed to be the first mathematical prize to be given in this country at regular intervals for research in pure mathe- matics, is an especially appropriate memorial for Professor Bécher, not only because of his achievements in research, but also because of his great services to mathematics in this country as one of the founders and for many years one of the editors of the Transactions of the Ameri- can Mathematical Society; for this latter reason the provision that the prize must be awarded for a memoir published in the Transactions seems particularly appropriate. May 5, 1922] SCIENTIFIC NOTES AND NEWS At the meeting of the National Academy of Sciences, held in Washington on April 26, mem- bers were elected as follows: Edward W. Berry, professor of paleontology, the Johns Hopkins University; George K. Burgess, Bureau of Standards; Rufus Cole, director of the hospital of the Rockefeller Institute for Medical Re- search; Luther P. Hisenhart, professor of mathematics, Princeton University; Joseph Er- langer, professor of physiology, Washington University Medical School; Herbert Hoover, secretary of commerce; George A. Hulett, pro- fessor of physical chemistry, Princeton Uni- versity; Charles A. Kofoid, professor of zo- ology, University of California; George P. Merrill, curator of geology, U. S. National Mu- seum; C. E. Seashore, professor of psychology, State University of Iowa; Charles R. Stockard, professor of anatomy, Cornell Medical College; Ambrose Swasey, president of the Warner and Swasey Company; W. H. Wright, astronomer, the Lick Observatory, University of California. Dr. Albert Einstein, of the University of Ber- lin, was elected a foreign associate. Av the meeting of the American Philosophical Society, held in the city of Philadelphia, on April 23 and 24, the following officers were elected: President, William B. Seott; vice- presidents, Arthur A. Noyes, Hampton L. Car- son, Henry Fairfield Osborn; secretaries, Arthur W. Goodspeed, Harry F. Keller, John A. Mil- ler; curators, William P. Wilson, Henry H. Donaldson; treasurer, Eli Kirk Price; council- lors, Lafayette B. Mendel, Herbert S. Jennings, William W. Campbell, Robert A. Millikan, Felix E. Schelling. Members were elected as follows: Charles Elmer Allen, Madison, Wis.; Rollins Adams Emerson, Ithaca; Worthington C. Ford, Cambridge, Mass; Frederick E. Ives, Philadelphia; Irving Langmuir, Schenectady; Roland 8. Morris, Philadelphia; George Wil- liam Norris, Philadelphia; Charles Lee Reese, Wilmington; Harlow Shapley, Cambridge, Mass.; Henry Skinner, Philadelphia; James Perrin Smith, Palo Alto; Charles Cutler Torrey, New Haven; Robert De Courey Ward, Cam- bridge; Henry Stephens Washington, Wash- ington; David Locke Webster, Stanford Uni- versity. SCIENCE 473 Dr. Wittiam F. Oscoop and Dr. George D. Birkhoff, professors of mathematics at Harvard University, have been elected corresponding members of the Gottingen Academy of Sciences. At the anniversary meeting of the Royal Irish Academy held in March, Professor T. H. Mor- gan, of Columbia University, and Professor Jules Bordet, of the University of Brussels, were elected honorary members in the section of science. THE Entomological Society of Brazil, on March 9, elected Dr. W. J. Holland, director of the Carnegie Museum of Pittsburgh, as one of its honorary members “in token of their appre- ciation of the services he has rendered to the science of entomology.” PROFESSOR W. NERNST will take over on April 1 the duties of director of the Physikalisch- Technische Reichsanstalt, but will continue to act as rector of the University of Berlin until October 15. PROFESSOR DuGatp C. Jackson, head of the department of electrical engineering, Massachu- setts Institute of Technology, was elected presi- dent of the Boston Society of Civil Engineers at the annual meeting of the society on March 15. Dr. T. WayLanp VauGHAN has at his request been relieved of administrative duties as chief of the Coastal Plain section in the Geological Survey, and L. W. Stephenson has been assign- ed these duties. W. P. Woodring has been ap- pointed chief of the section of West Indian geologic surveys in the Coastal Plain section. F. J. Katz, who has been with the Census Bureau for several years, has returned to the Geological Survey and will be assistant chief of the Mineral Resources section. Hersert Poprenogr, of Stanford University,. has been appointed psychologist for the Califor- nia State Bureau of Juvenile Research, to be stationed at the Preston School of Industry. F. H. Reap, formerly assistant engineer of tests of the Pittsburgh Testing Laboratory, has resigned to accept the position as research engi- neer of the Office of Public Roads, with head- quarters at Harrisburg, Pa. Tue Smith’s Prizes at the University of Cam- bridge have been awarded to EK. A. Milne, Trin-- 474 ity College, for an Hssay on “Studies in the theory of radiative equilibrium,” and to G. C. Steward, Gonville and Caius College, for an Hssay on “The Aberration-diffraction problem.” J. A. Carroll, Sidney Sussex College, has been elected to an Isaac Newton Studentship, and the studentship of W. M. H. Greaves, St. John’s College, has been prolonged for a year. Tue American Medical Association has grant- ed to Dr. Reynold A. Spaeth, of the Depart- ment of Physiology, School of Hygiene and Public Health, Johns Hopkins University, the sum of $200 to further his researches on the relation between susceptibility and fatigue. Dr. W. A. Cannon, of the Department of Botanical Research of the Carnegie Institution of Washington, has returned to this country from South Africa where for several months he was engaged in making observations on the plants and on the conditions of plant life in certain of the more arid portions of that country. Proressor Lazarus Bartow, who holds the chair of experimental pathology at the Middle- sex Hospital Medical School, is visiting the United States to investigate methods of cancer research and radium treatment. ProFessor ALEXANDER Maximorr, formerly professor of histology and embryology at the Imperial Academy, Petrograd, has arrived in Chicago from Russia to accept an appointment in the department of anatomy at the University ot Chicago. On February 19 Dr. Francis W. Simonds completed thirty-two years of continuous serv- ice as head of the department of geology in the University of Texas. Dr. Simonds is now the senior professor in the faculty of the College of Arts and Sciences, and for the past five years he has been secretary of the general faculty. Tue University of Buffalo recently combined with Canisius College and the Buffalo Society of Natural Sciences in bringing Professor M. M. Metcalf, formerly of Oberlin College, to Buffalo for a series of three lectures on “Animal Distri- bution; Man’s Origin; Man’s Future: can he control it?” The lectures were given on April SCIENCE [ Vou. LV, No. 1427 26, 27 and 28, and the course was attended by about 3,500 people. Proressor C. J. Knyser gave, on April 20, a lecture before the Detroit Mathematics Club on the mathematical obligations of philosophy and education. FREDERICK V. CoviLun, botanist of the Bu- vreau of Plant Industry, delivered the annual address before the Gamma Sigma Delta frater- nity of the Kansas State Agricultural College on April 26. His subject was the ‘Influence of cold in stimulating the growth of plants.”’? While in Manhattan, Mr. Coville visited the station projects and lectured before the staff members on “Acid tolerant plants” and related subjects. Str Ernest RvutTHERFORD delivered a Royal Institution lecture on April 7, on “The evolu- tion of the elements.” GEORGE Bruce Hatstep, professor of mathe- matics at the University of Texas from 1882 to 1903 and subsequently at the State Teachers College, Greeley, Colorado, died in New York City on March 19, at the age of sixty-nine years. Dr. Anse A. Tyzer, professor of biology in James Millikin University, died of pneumonia on Friday, March 31. Dr. Tyler was born in East Bridgewater, Pa., in 1869. He did his undergraduate work in Lafayette College and received his Ph.D. from Columbia University. He had served on the faculties of Union Col- lege, Syracuse University; University of Ari- zona; and Bellevue College, Omaha. Henry Newton Dixon, formerly lecturer in the Oxford School of Geography and professor of geography in University College, Reading, has died at the age of fifty-six years. Puiuippe AuGuste Guys, professor of phys- ics at Geneva, died on March 27, at the age of sixty years. Proressor Heyn, whose work at the Mate- rialpriifungsamt, first under Martens and later as co-director, has made his name known to engineers and metallurgists, has died at Berlin at the age of sixty-eight years. Tux death is announced of Professor Robert Wenger, director of the Geophysical Institute of May 5, 1922] the University of Leipzig. By the will of the late Professor KE. C. Han- sen, of Copenhagen, a prize has been founded to consist of a gold medal and a sum of at least 2,000. crowns, to be awarded every two or three years for distinguished work in micro- biology, published within the preceding years in Denmark or elsewhere. It is proposed in 1922 to confer the medal on some worker in general not medical microbiology. The founda- tion is in charge of the chiefs of the Carlsberg Laboratory at Copenhagen. Professor C. O. Jensen and Professor 8. P. L. Sérensen, Profes- sor Calmette of Paris and Professor Theobald Smith of Princeton are also on the committee of awards. A CONFERENCE of those who teach physiology in the women’s colleges of the northeast was held at Mount Holyoke College on April 21 and 22. The conference had to do almost entirely with teaching problems, since there have been very few opportunities for such discussions at the usual scientific meetings. Among the topics were the aims of the courses given at the various institutions, the prerequisites and content of the courses, the choice of material for experi- mental purposes, the affiliations of physiology with chemistry, physics, zoology and hygiene, and the type of research possible with undeyr- graduates. The institutions represented were Barnard, Bryn Mawr, Connecticut, Goucher, Mount Holyoke, Simmons, Smith, Vassar and Wellesley. Wittiam Woop & Co. have transferred pub- lication of the New York Medical Record to the A. R. Elliott Advertising Agency, which pub- lishes the New York Medical Journal and the American Druggist. The Medical Record was first issued in March, 1866. Dr. George F. Schrady was editor of the journal from its in- ception until his death in November, 1907, since which time it has been under the editorial management of Dr. Thomas L. Stedman. THe publication of the Behavior Monographs will be discontinued upon the completion of the current volume (Volume 4) and a new series of Comparative Psychology Monographs will be initiated under the editorship of Professor Wal- SCIENCE 475 ter S. Hunter, of the University of Kansas, with the cooperation of Professor H. A. Carr, of the University of Chicago, Professor S. J. Holmes of the University of California, Professor K. S. Lashley, of the University of Minnesota and Dr. R. M. Yerkes, of the National Research Council. The new monograph series will be broader in scope than the old and, in addition to studies in animal behaviour, will publish work in human psychology conducted from the comparative point of view. Tue Permanent Bureau of All-Russian En- tomo-Phytopathological Congresses, Petrograd, desires: (1) To exchange printed matter (pub- lished since 1914) on entomology, phytopathol- ogy, mycology and zoology, with American col- leagues, scientific societies, agricultural experi- ment stations, museums of natural history, periodicals, ete.; (2) To receive from Ameri- can publishers catalogues and specimen numbers of various publications on the above mentioned subjects; (3) to receive catalogues and price lists from American firms dealing in apparatus and chemicals used in combating plant enemies. Mr. D. N. Borodin will forward packages of books, bulletins, ete. for Russia, addressed to him at No. 110 West 40th Street, New York City. Tue Kelp-Potash Plant of the Bureau of Soils, U. S. Department of Agriculture, at Sum- merland, California, was sold and transferred on April 1 to Mv. Rodney Benson of Santa Bar- bara. This plant was constructed in 1917 and operated for four years as an experimental and demonstrational plant with a view to the devel- opment of processes for extracting potash and by-products from the giant kelps of the Pacific. It was closed through Congressional action in 1921. The plant will be enlarged and put back into operation at once for the manufacture of “Kelpchar” (a decolorizing carbon of very high activity), potash salts, and iodine. Dr. J. W. Turrentine, who was in charge of the plant throughout the period of the experimentation, after turning over to the Government’s succes- sors the manufacturing data established there, will return to Washington, D. C. THE Journal of the Washington Academy of Sciences reports that Dr. T. T. Waterman, lately 476 appointed ethnologist of the Bureau of Ameri- can Ethnology, has left for field-work in Alaska, Oregon and Washington. He will first proceed to the Kasaan National Monument, Alaska, to study the architecture, totem poles and other objects at this village and will be accompanied by a half-breed Haida, related by marriage to Chief Skoul. It is expected that considerable legendary data bearing on history and sociology of the former inhabitants of Kasaan will also be collected. Should the results justify further work it is planned to continue field-work on place names and aboriginal village sites of Alaska to be followed later by work on strati- graphic archeology in more northern latitudes in order to discover if possible traces of the oldest Indians in this supposed prehistoric gateway of the migration of man into North America. AccorDING to the correspondent of the Asso- ciated Press, boring into the crater of Kilauea, the active voleano on the Island of Hawaii, will be started May 1 in an effort to ascertain the heat underground and to discover whether it can be turned into industrial channels. A con- tract has been signed and the work, which will consume approximately six months, will be under the direction of Professor T. A. Jagger, voleanologist, in charge of the Kilauea observa- tory. Holes will be bored to various depths on all sides of the Kilauea crater, the great Kau desert to the south and at accessible spots on the floor of the crater. It is planned to bore into the lava flows of 1921, 1919, 1918, 1894, and in some more ancient flows, to ascertain whether any of the heat generated by those dis- turbances remains underground. THe Collins collection of alge, covering both the seaweeds and their fresh-water rela- tives, has recently been acquired for the herbarium of the New York Botanical Garden in Bronx Park through the generosity of its director-in-chief, Dr. N. L. Britton. The new accession includes more than 40,000 specimens from nearly all parts of the world, New England, Bermuda, Florida, California, Alaska, the Philippine Islands, Japan, the Dutch Hast Indies, South Africa, Australia and the South Sea Islands being especially well represented. Frank Shipley Collins of Malden and later of SCIENCE [Vou. LV, No. 1427 North Eastham, Mass., was a business man who devoted his leisure to the advancement of scientific knowledge. The Collins collection is the latest of an importnt series of large collec- tions which have been purchased to facilitate the scientific researches that are carried on in the Bronx Park institution. Among these are the J. B. Ellis collection of fungi, numbering about 80,000 specimens; the Mitten collection of mosses and hepatics, including about 50,000 specimens; the Underwood fern collection, with 16,000 specimens; the Otto Kuntze herbarium of more than 30,000 miscellaneous specimens, presented to the Garden by the late Andrew Carnegie; the Vigener herbarium of more than 20,000 specimens, also presented by Mr. Carnegie; the A. Henry collection of Chinese plants, including nearly 8,000 specimens, and the Jenman collection of West Indian and South American ferns, comprising about 4,000 specimens and given by the late D. O. Mills, the first president of the Board of Managers of the New York Botanical Garden. The num- ber. of specimens in the entire herbarium of the garden is now approaching 2,000,000 . THE ninth annual Faculty Research Lecture at the University of California by election by the Academie Senate was given by Dr. Charles A. Kofoid, professor of zoology in the univer- sity who spoke on Charter Day, March 22, on “Amceba and man.” The discovery was an- nounced of the detection of amceba in the bone marrow in eases of Ely’s second type of arthritis deformans in man. The amebic na- ture of the parasites in the bone lesions was demonstrated by their mode of cell division and the number of chromosomes which differ from those of human cells. THE correspondent of the London Times at Paris, under date of February 15, writes that the solemn reception of Mme. Curie by the Academy of Medicine is a fait accompli. The secretary-general read the terms of the decree by which the president of the republic ap- proved the election of Mme. Curie. As an un- precedented mark of honor, M. Béhal made a speech to welcome the first Académicienne. He reminded her that it was about twenty years ago that, in response to his request, she gave a lecture at the Sorbonne on radium, which she May 5, 1922] had discovered, and was studying with her hus- band, Pierre Curie. He rapidly reviewed the ground traveled since then, and continued: “All these discoveries which result from yours are as nothing compared with the fundamental fact which you found—I mean the formidable energy contained in the atomic system. If we are to succeed in being able to release it methodically it would relieve the world from the dread of seeing disappear, at short notice, reckoning time in relation to the age of the world, the fuel accumulated in former centuries which is at present our principal source of energy.” Mme. Curie bowed low and took her seat simply and without a word among her eminent colleagues. Dr. Lynps Jones, from the department of animal ecology of Oberlin College, is arranging a special field expedition to leave Oberlin on June 23, going west through Illinois, across the Mississippi to Iowa and on toward Mac- Gregor, through Southern Dakota, across the Big Horn Mountains in Wyoming into Yellow- stone Park. The itinerary will then take the party to Poeatelo, Idaho, on to Salt Lake City and southern Utah, visiting the National Moun- tains and Bryce’s Canyon. Leaving Utah, the group will strike across the northern part of Arizona and the southern tip of Nevada into southern California. Proceeding to the coast a week’s camp will be made near San Diego. Sixteen students will make up the party, trav- eling with automobiles with complete camping outfit. Special attention will be given to the study of bird and animal life and field maps and topographical surveys will be prepared covering all parts of the route. Tue Department of Commerce will send a party, headed by Assistant Secretary C. H. Huston, to Alaska this summer for the purpose of making a general investigation of conditions in which that department is particularly inter- ested. The Bureau of Fisheries, the Coast and Geodetic Survey, the Lighthouse Service and the Steamboat Inspection Service are the bureaus of the department which are closely identified with the affairs of the territory. It is the purpose to determine in what ways these bureaus can be made of greater benefit in devel- SCIENCE 417 oping Alaska. Particular attention will be de- voted to the salmon fisheries, which yield produets of an average annual value of about $40,000,000 and in normal seasons give employ- ment to upwards of 20,000 persons and repre- sent an investment of about $70,000,000. It will be the purpose also to observe conditions in respect to the fur-seal industry at the Pribilof Islands, which work is administered by the Department of Commerce through the Bureau of Fisheries. UNIVERSITY AND EDUCATIONAL NOTES THE Journal of the American Medical Asso- ciation states that ground was broken on April 10 for a new building which will accommodate the departments of botany, zoology, pharm- acology and physiologic chemistry at Tulane University of Louisiana School of Medicine, New Orleans. The building is to be four stories high and will be erected at a cost of about $180,- 000, $125,000 of which has been subscribed by the general education board. The laboratory will be equipped at a cost of $30,000 and it is expected that the institution will be completed in December. Dr. Warristp THrosatp Lonacorr, Bard professor of medicine at Columbia University, and physician in chief at the Presbyterian Hos- pital, New York City, has been appointed pro- fessor of medicine at the Johns Hopkins Uni- versity Medical Department, and physician in chief at the Johns Hopkins Hospital, beginning on July 1, when the one-year term of Dr. H. Canby Robinson will expire. Dr. Robinson went to the hospital with the understanding that at the end of one year he was to return to his post as professor of medicine and dean of the Vanderbilt University Medical Department. Proressor CHaries L. Norton, head of the division of cooperation and research at the Mas- sachusetts Institute of Technology, will become head of the. department of physics, vacant by the acceptance by Professor E. B. Wilson of a eall to the Harvard School of Public Health. BengaMIN Brirron GoTTSBERGER, who since 1920 has been a consulting engineer with offices 478 in New York City, has been appointed professor of mining in Yale University to succeed Pro- fessor James F. McClelland who resigned in 1919. Av the New York Post-Graduate Medical School and Hospital, the laboratory of patho- logical chemistry, formerly a division of the de- partment of laboratories, has been made an in- dependent department and the name changed to the department of biochemistry. The per- sonnel consists of Victor C. Myers, Ph.D., pro- fessor and director; Cameron V. Bailey, M.D., and John A. Killian, Ph.D., assistant profes- sors; Hilda M. Croll, M.A., associate and Her- bert W. Schmitz, M.D., assistant. DISCUSSION AND CORRESPOND- ENCE THE FUTILITY OF THE HUMAN YOLK SAC In the current issue of the Anatomical Record, Professor Arey publishes a brief but very interesting contribution (No. 90) from the Anatomical Laboratory of Northwestern Uni- versity. He describes a human chorion con- taining two embryos, of 11.5 and 12 mm. respectively, one of which has a yolk sac, and the other has none—that is, none was found, and sections of the umbilical cord showed no trace of a yolk stalk. Hence the broad con- clusion is drawn that “the human yolk sac is a vestige unessential to growth or differentia- tion (ineluding vasculogenesis).” It is stated that one of these embryos “received all, or essentially all, the cells destined to form a yolk sae” and that “the total absence of a yolk sae in one embryo, which is otherwise normal in every way, further demonstrates conclusively that this organ is not essential to the growth of an embryo or to the proper dif- ferentiation of its parts; indeed, the embryo in question is slightly larger than its twin.” Since from the days of Wolff the yolk sac has been regarded as the source of the intes- tinal tract, and in young human embryos is seen to be the organ from which the allantoic duct and the digestive tube proceed, the startling nature of this conclusion becomes apparent. But it is universally recognized SCIENCE [Vou. LV, No. 1427 that the yolk sac does its work in early stages, and though the sae usually persists as a fune- tionless rudiment until birth, its duet normally becomes parted through atrophy in embryos younger than the one under consideration. Does Dr. Arey’s case indicate anything more than the precocious obliteration of the stalk of an organ no less essential than the placenta, likewise cast off after its very vital functions have been performed? ; Tf the question is raised, Where then is the yolk sae in Dr. Arey’s case? his own studies furnish a plausible answer, since in another specimen he has deseribed a single sac with two stalks, each leading to a separate embryo. Under such cireumstances, the early oblitera- tion of one of the stalks would give rise to the conditions observed in the second case, and this possibility must be eliminated before ac- cepting the proposed conclusion. In reading the account of a human embryo without a yolk sae, we recall Bentham’s incredulous comment, “T am very glad, my dear sir, that you saw that, for had I seen it myself, I wouldn’t have believed it.” ) Freperic T. Lewis HARVARD MepIcAL SCHOOL, Boston, MASSACHUSETTS DEFLECTION OF STREAMS BY EARTH ROTATION THE recent note by Professor Jennings sug- gesting that the steeper valley sides on the right of the south-flowing streams on Long Island may be due in some manner to wind action instead of to the deflective effect of the earth’s rotation is a welcome contribution to an old problem. In spite of Gilbert’s apparent acceptance of the earth’s rotation in explana- tion of the unsymmetrical cross-section of those valleys, the small size of their streams has always stood in the way of it, all the more since Bowman showed, on the basis of accurate maps of the lower Mississippi, that even that great river shifted its course to the east or left, apparently under the control of the wind, and not to the west or right, as it should if the earth’s rotation were in control.t 1Screncr, XX, 1904, 273-277. May 5, 1922]- It is, however, interesting to note that the remarkably well defined right-handed or east- ward shifting of many radial streams that flow down the gentle slope of the great alluvial fan, known as the plateau of Lannemezan, at the northern base of the Pyrenees—hbeautifully shown on the 1:80,000 map of France, sheets 216, 217, 227, 228, 229, 239, 240, and 241— has been explained by Marchand and Fabre? not as a consequence of the earth’s rotation but as a result of stronger action of rain driven by westerly winds; so that here it is the valley sides facing against the wind that are the steeper, while on Long Island the steeper val- ley sides face with the winds. It is difficult to understand just how either explanation works, but in any case the relation of the steep valley sides and the prevailing winds is unlike in the two examples. W. M. Davis CAMBRIDGE, MAss., APRIL 2, 1922 POSSIBLE CAUSE OF THE RED COLOR OF POTASH SALTS THE red color of certain potash and ordinary salt deposits has been observed in many parts of the world, for example, in the Indian, Ger- man, Alsatian and Spanish potash deposits, in Nova Scotia, west Texas and doubtless in other places that the writer has not heard of. The same, though a less intense coloration has been observed by the writer in the surface salt and strong brine standing in the trenches and in pools along the margin of the salt ponds where solar salt is made along the shore of San Fran- cisco Bay, California. It has been noted at Searles Lake in the same state. I am told that the same red color exists also in the solar salt ponds on Turks Island. It is undoubtedly of common occurrence in many places where solar evaporation results in producing salt, either naturally or artificially. The red color associated with certain potash minerals is so common that it has come almost to be regarded as a means of identifying cer- 2Les érosions torrentielles et subaériennes sur les plateaux des Hautes Pyrénées. OC. R. Congr. Soc. savantes, 1900. SCIENCE 479 tain of them, for example, the mineral carnal- lite in the German deposits. There is however, as chemists well know, nothing inherent in the composition of carnallite (KC1.MgCl,.6H,0) to cause this red tint and indeed the normal color of the pure double salt should be the same as that of ordinary white rock salt. There has been a great diversity of opinion as to the origin of the red color in solar salt and bitterns where solar evaporation is in pro- eress. That it is not necessarily due to the presence of iron appears evident from the ob- servations of George Lunge, the expert on sul- phurie acid manufacture. Lunge' states that: The red. color exhibited by many alkaline salt lakes, which is often also apparent in the salt deposits, is ascribed by Payen? to the pres- ence of small crustaceans, Artemia Salina Leach (Cancer salinus Linné), which appear in large masses when the water has attained a density of 1.16, and which are of a gray or greenish color; on further concentration to a specific gravity of 1.21, they die and form a red froth at the sur- face. ... I, for my part, must decline to accept the assumption that the red color is regularly caused by the presence of Artemia or other ani- mal organisms, if it is ever due to that cause; for the samples of red water which I had myself taken from the lakes of the Wade Atrun have preserved that color during the many years I have kept those samples. The red filtrate shows noth- ing under the miscroscope; the color is at once discharged by adding nitric acid or hypochloride and hydrochloric acid and is evidently caused by organic substances present in solution. There is no iron present. Recent studies made in the U. S. Bureau of Fisheries, Department of Commerce, connected with the reddening of salt fish are of interest and importance in this connection. They are also of economic value in view of the consider- able annual losses to the fish industry caused by salt fish developing a red color when stored under moist conditions. The Bureau investiga- tions, which were conducted by W. W. Browne’, i Lunge, Geo., Sulphuric Acid and Alkali, Vol. 2, pt. 1, p. 58, 1909. 2Payen, Anselme, Annales chim. et phys., 2d ser., Vol. 65, p. 156, 1837. 3 Bureau of Fisheries, Document 896, 1920, pp. 27-28. 480 indicate that the red color is due to two micro- organisms, which probably originated in the sea salt used in euring the fish. The color varies from pale pink to deep crimson, the former the result of the growth of a spirochete, and the latter produced by a bacillus form. These microorganisms grow in completely saturated brine on salt fish and on salt piles, but no growth appears in media containing less than 15 per cent. of salt by weight. The most favorable temperature for the growth of both organisms is between 50° and 60° C. in- dicating that the salt lagoons of the tropies are probably sources of infection. Sunlight is not germicidal, which also points to their tropical origin where pigmentation is required against bright sunlight. Ordinary bacteria are killed by ten minutes exposure to the bright. sunshine. Salt acts as a preservative prevent- ing the growth of most organisms, but here is an instance of just the opposite effect. In summary, the results of recent investiga- tion indicate that the cause of the red color in solar salt and brine is due to organisms as in- dicated above and that their source is salt pro- duced by solar evaporation. Both European and American sea salt is infected, but mined salt is free from their presence. The studies made by the Bureau of Fish- eries and by others before it (See Bibliography published by Bureau of Fisheries) have sug- gested to the writer that possibly causes allied to those now producing red coloration in solar salts may have been active as long ago as the Permian. Whatever may be the main cause of the reddening of the Permian potash salts, the question naturally arises, is the reddening in the potash salts of the German Permian, the Alsatian Oligocene and the Spanish Tertiary deposits due to the same or similar agencies that are causing reddening in the solar salt of the present time. It is probable that both types of salts have been formed under essen- tially similar conditions, that is, salt pan con- ditions. If this last statement be admitted, then it points to the growth of bacteria, at least intermittently, from the Permian down to the present. This is presented to induce further study SCIENCE [Vou. -LV, No. 1427 along this line and to elicit discussion and opinions. Such studies may also throw some light on temperatures during Permian and later geologic time. W. C. PHALEN, THE SoLvAY Process CoMPANY, Syracuse, New York, POPULAR SCIENCE To tHE Epitor oF ScieNcE: I am sorry to see that Dr. E. Dorsey confirms! the opinion expressed by Dr. Brooks? and myself* that sci- ence is relatively losing ground in popular interest and esteem. I fear he is right also in saying that this is in part the fault of scien- tists. For the prevalent indifference and even hostility of the public to the higher teachings of science may be matched by the indifference and even hostility of certain scientific men to the “vulgarisation of science.” It is quite true, as Dr. Dorsey points out, that isolated facts, however numerous and authentic, do not constitute science. I have kept that point in mind in all our Science Service work. For instance I said in a recent magazine article :* We can get from the reading of science not only new things to think about, but, what is more important, new ways of thinking about things. But I hope that Dr. Dorsey will not dis- courage those of us who are trying to get a larger amount of “mere information” in the newspapers. A few more facts are really needed to season the mass of fiction there. We may also hope to get over some idea of the relations between facts and how the scientist finds his facts and what he gets out of them. But we ean not expect that the newspaper reader will acquire the habit of persistent ex- perimentation, constant criticism, rigorous rea- soning, projection of hypotheses, balancing of theories and suspension of judgment character- istic of the scientific mind. . If the layman 1 ScIENCE, 55: 374, 1922. 2 Journal Washington Academy of 12: 73, 1922. 8 SCIENCE, 55: 241, 1922. 4 ‘Science from the Side Lines,’’ in The Cen- tury, January, 1922. Sciences, May 5, 1922] could get all this he would be not a layman but a scientist. The most we can expect is that the layman may gain sufficient acquaintance with scientific thinking to understand the methods and aims of research and to appreciate its value to civilization. That he does not commonly acquire such comprehension and appreciation is because the men who understand the value of science have been too often unwilling to take the pains to impart their information and inspiration to. him. We are told that Agassiz required of his stu- dents in every department to prepare “first a monograph, second a scientific lecture, third a popular lecture, fourth a simple child’s tale.” How many of our annual army of Ph.D.’s would pass the third and fourth of these intelli- gence tests? Agassiz had his reward in the dozens of devoted disciples who became the teachers of the next generation and in the thousands of young people who bear his badge as they search forest and strand with curious eyes. But we need more men of the Agassiz type—and we seem to be getting fewer. England, as I showed in ScrencE, seems to have more men of high standing who are will- ing and able to translate their learning into the vernacular. It would be hard to match in all America the popular lecturers of the Royal Institution from Faraday to Bragg. But even in England we hear complaints of the growing gulf between the specialist and the public. The once-popular lectures to workingmen are now said to be running short of both speakers and hearers. Last year the columns of Nature were filled for months with diseussions of why the lay membership of the British Association for the Advancement of Science was falling off. The British Association has always had the advantage of ours in the large number of citizens, not professionally engaged in scien- tific pursuits, who would support and attend the annual meetings but now it is becoming, like the American Association, a congeries of highly specialized sections. Several of the correspondents in Nature ex- pressed the opinion that the public had lost interest and confidence in science because scien- tists have lost their fighting spirit and the courage of their convictions. They take every- thing lying down nowadays and do not dare to SCIENCE 481 defend their views or even defend their right to hold and teach their views. This is a point worthy of consideration by those American men of science who have adopted the policy of treating with dignified contempt the present legislative and ecclesias- tical attacks upon their intellectual freedom. Little is being done in scientific circles to check the rising tide of superstition and intolerance now sweeping over the land. Perhaps when appropriations are eut off, as in South Caro- lina, on the ground that the university has an evolutionist on the premises our scientific pacifists may sharpen up their pens and turn out literature as interesting to the general reader as Huxley’s debate with Gladstone about the demons who converted the pigs of Gadara into pickled pork. Dr. Dorsey is wise in putting “accounts of discoveries” first in his list of popular science subjects. But who will write them? I have been hunting in vain for writers who could sense the dramatic elements in such a scene as Archimedes’ bath and tell how this ancient graft case led to the law of specific gravity. Who will describe the feelings of Faraday when he saw the loose end of a little magnet rotating about an electric wire in the dingy laboratory of the Royal Institution and then explain what that had to do with the trolley cars that are passing in the street? The history of science is as rich a field for the cultivation of good literature as the history of literature, art and music but it remains un- tilled for want of attention. Students have been trained to look another way. The aim is now to eliminate the personal element from science and reduce it to an abstract and time- less formula. This may be necessary as a S¢i- entific method but it naturally results in the decline of interest. The old textbooks are more readable than the modern. A distin- guished physicist, in discussing this point with me, said: “When I was in college I had to study Hastings and Beach but I read Deschanel for my own amusement.” I am not advising that our textbooks should return to the leisurely literary style of long ago but we can not expect depersonalized science to be popular. Whatever is without “human interest” is not interesting to humanity. Dehydrated potatoes 482 are convenient for conveyance but they have to be soaked up before they are palatable. Epwin E. Stosson ScigENcCE SERVICE WASHINGTON SCIENTIFIC BOOKS An Introduction to Cytology. By Lester W. Suarp. McGraw-Hill Book Company, New York, 1921. 452 pages, 159 illustrations. For a subject of such wide interest and great significance as cytology, there are sur- prisingly few text books. For years Wilson’s classic work, “The Cell in Development and Inheritance,’ has been the chief reference vol- ume, especially of the beginning investigator. Very recently two English texts, one by W. E. Agar, “Cytology, with Special Reference to the Metazoan Nucleus,’ and another by L. Don- easter, “An Introduction to the Study of Cytology,” have appeared. These are good books, dealing in both cases, however, with a rather limited field and largely with animal ma- terial. There has long been felt the need for an introductory text which would present an out- line of the subject in both its botanical and zoological aspects. The rapid advances made by numerous investigators, working upon a great variety of materials, and the intimate relation of these in many cases to equally rapid developments in the other new science of genetics, have made the writing of a cytological text book a very difficult matter. Professor Sharp, despite these obstacles, has done an excellent piece of work for he not only covers the fields of botany and zoology, but embraces in his consideration of subjects most of those necessary for an understanding of the scope of cytological knowledge. Very properly, however, he places emphasis upon the topics of greatest general interest. We find, therefore, that of the 452 pages of text, 240 are devoted to the hereditary mechanism and the results of its operation. Zoologists, particularly, will welcome so comprehensive a summary of the achievements of their botanical fellows as Pro- fessor Sharp presents. While this is naturally the strong part of the work, zoological material is well considered. Indeed, the author deserves special commendation for the completeness and fairness with which the contributions of zoolo- SCIENCE [Vou. LV, No. 1427 gists are treated. In view of the general ex- cellence of the book in this respect, it might be permitted, in the interest of the accuracy for which the author very evidently strives, to point out that in a few cases he has allowed his personal studies to influence his presenta- tion of topics concerning which there are dif- ferences of opinion. Perhaps the most con- spicuous example of this is in the discussion of the differential structure of the chromatin thread. While there may be uncertainty on this point in plant material, there is none in many animal forms. The method by which the material is pre- sented is entirely to be commended. In recog- nition of the developmental stage of the sub- ject, Professor Sharp has endeavored to set forth its status by showing what the problems are and how they are being met, rather than by attempting to define in categorical terms the content of our knowledge. The spirit and motives of an investigation are as important as its achievement, and, since cytology is now so largely a matter of discovery, it would be a misrepresentation to exhibit it otherwise than as an active field of research. As practical measures for such a presenta- tion it may be noted that the numerous illus- trations are, almost always, copies of those found in research papers instead of those from text books; extensive bibliographies follow each chapter, offering the means for a compre- hension of the extent of the work done and for following up any particular subject;! there is a full index in which may be found the tax- onomic position of all materials discussed; scattered through the chapters are brief his- torical or critical reviews of nomenclature; there are frequent diagrammatic figures which 1 As indicating the scope and character of these references it may be noted that at the end of Chapter XI, ‘‘The Reduction of the Chromo- somes,’’ a total of 170 individuals, of 11 nation- alities, are quoted. The distribution of these biologists is interesting, indicating, as it does in a general way, the interest in cytology exhibited in different countries. Of the 170 individuals referred to, there are 54 Americans, 46 Germans, 26 British, 13 French, 9 Japanese, 7 Scandina- vians, 6 Belgians, 4 Hollanders, 2 Russians, 2 Italians, and 1 Pole. May 5, 1922] present concisely the essential steps in the processes under consideration. These, with other features, make the book very accessible and helpful. It might here be suggested that the diagrams would be improved by larger index characters, and that somewhere a concise index to the various terminologies scattered through the chapters would make them more available. It is not to be hoped that in a book of this character there should be an absence of errors, although in this imstance they are not so numerous as usual. Certainly they do not render the text as a whole unsafe for the un- guided beginner. Because of the merit of the book in general and its obvious adaptability to the present needs of a great variety of people, it is particularly important to reduce errors of all sorts to a minimum. Undoubtedly, the cor- dial invitation of the author for assistance in eliminating these will be met with a helpful response by his fellow workers. Here it should suffice to speak of only more general features needing attention. Owing to the fact that the book will most largely be used by those generally unfamiliar with cytology, and having varied approaches to it, there is need for the greatest clearness in distinguishing between the different categories of objects and conditions described. This is not. always done and there is sometimes con- fusion between gene and character, and be- tween the valence of the elements in the chromosome complex. In the effort to simplify the presentation of the maturation phenomena in some of the diagrams, only one mitosis is shown. While this displays clearly one of the important conditions of meiosis it entirely neglects another, viz., the essential unity of the two maturation mitoses as a process. This is further emphasized by the consistent use of the terms “heterotypic” and “homotypic.” Enough evidence has been presented to show beyond question that the first maturation mitosis is not necessarily a reduction division as the terms imply. It is necessary only to recall the be- havior of the sex chromosomes in the Hemip- tera and the “selected chromosomes” in Phry- notittix, as described by Wenrich, to demon- strate this. There is something in meiosis be- sides a reduction division and an ordinary SCIENCE 483 equation division. It is important to show clearly that meiosis is a unique phenomenon. Doubtless, there are other instances of sim- ilar differences in point of view between author and reviewer which might be used to illustrate the present status of opinion in cytology, and the degree of adaptability of the text of Professor Sharp as an introduction to the subject. What has been given will, how- ever, suffice to show that the existing differences of opinion are not extreme, that they are fairly presented in the text, and that in their exposi- tion, a work has been produced that will serve to extend the usefulness and influence of cytology greatly. It is not venturing far to predict that the “Introduction to Cytology” will take its place as a worthy member of the very successful series of which it is a part. C. E. McCiune » SPECIAL ARTICLES CONTINUOUS RENEWAL OF NUTRIENT SOLUTION FOR PLANTS IN WATER- CULTURES In the experimental study of the salt nutri- tion of plants, it is of course very important that all the influential features of the culture media be definitely known. The initial com- position of a mixed salt solution employed for water-cultures may be known with a marked degree of accuracy, but the chemical make-up of such a nutrient solution begins to be altered immediately after the introduction of the plants; materials, of course, move from the roots into the solution, as well as in the oppo- site direction, and the solution soon becomes significantly different from what it originally was. Since there is no feasible way by which all the various kinds and rates of alteration may be adequately determined, the culture solutions must be renewed from time to time if the growth of the plants is to be correlated with known chemical conditions surrounding their roots, and renewal must be frequent enough to allow these unknown alterations to be regarded as uninfluential. How frequently water-culture solutions should be renewed is always a difficult ques- tion. With small culture vessels, with large plants, or with many plants in a vessel, it is 484 clear that renewal ought to be more frequent than with larger vessels, smaller plants, and so forth. The labor involved is generally a serious consideration also. Whether solutions were renewed frequently enough, in particular experiments, to allow growth to be correlated with the characteristics of the solutions as these were originally prepared has been a sub- ject of discussion from time to time. To an- swer this question for any experiment, a num- ber of different renewal frequencies may be simultaneously tested, to determine how often the solutions must be changed in order that no difference in growth may result with still more frequent renewal. A consideration of this question, together with the amount of labor involved in renewing a large series of solutions, leads obviously to the suggestion that the solution might be made to flow continuously through the culture vessel, the inflow being of known composition and the outflow being discarded. If the rate of flow is rapid enough, the discarded solution will not be significantly different from the inflow, and the roots may be said to have been in a known set of chemical surroundings throughout the cul- ture period. Several rates of flow should be simultaneously tested, at least in a preliminary way, in order to make sure that the data studied shall have been secured with a suffi- ciently rapid rate. By employing continuous flow, the labor of renewing solutions would be practically avoided, since the apparatus would operate continuously without alteration, aside from the preparation of solutions and their introduction into the apparatus from time to time. The apparatus should automatically maintain any desired rate of flow through the culture vessel. \ The need of an apparatus for continuous flow has become increasingly evident through- out the recent development (begun by Schrei- ner and Skinner, and Tottingham) of water- culture experimentation by means of logically complete series of salt combinations. A pre- liminary step was taken when Trelease and Free,! working in this laboratory in 1916, con- 1 Trelease, 8. F., and E. E. Free: ‘‘The effect of the renewal of the culture solutions on the SCIENCE [Vou. LV, No. 1427 cluded that Shive’s nutrient solution R5C2 (1.75 atm.) gave better growth the more fre- quently the solution was renewed, a continuous flow giving better growth than did daily re- newal. Although, with the gradually improv- ing technique of the water-culture method, many workers? have doubtless appreciated the desirability of continuous flow, constantly flowing solutions appear not to have been sub- jected to any further tests thus far recorded in the literature? It is interesting to note, however, that the logical need of continuously renewed culture solutions was clearly stated by Stiles.t when he wrote: “In no case has a con- stantly renewed culture solution been employed. Thus the ratio of the various constituents was probably constantly changing throughout the experiments, and instead of being a constant factor was an unknown and varying one.” Also, Duggar® mentioned the need of fre- quently renewed or continuously flowing solu- tions, but coneluded that any operation involv- ing continuous flow “would be impracticable in most of our experimental work.” This paper is planned to emphasize still fur- ther the need of flowing solutions and to pre- sent a brief description of an arrangement for securing them. The accompanying diagram shows the main features of the apparatus, which consists growth of young wheat plants in water-cultures. Johns Hopkins Univ. Cire., N. 8., No. 3, March, 1917, pp. 227 and 228. 2 Conner, S. D., and O. H. Sears: ‘‘ Aluminum salts and acids at varying hydrogen-ion concen- trations, in relation to plant growth in water cultures. Soil Science, 13: 23-33, 1922, p. 27. 3In 1865 Nobbe flowed solution into a vessel in which ‘plants were growing, but he seems not to have tried to control the rate of flow. 4 Stiles, Walter: ‘‘On the interpretation of the results of water culture experiments.’’ Annal. Bot., 30: 427-436, 1916. 5 Duggar, B. M., ‘‘ Hydrogen ion concentration and the composition of nutrient solutions in rela- tion to the growth of seed plants. Annals Mis- sourt Bot. Gard., 7: 1-49, 1920, p. 43.—Idem., ““The use of ‘insoluble’ salts in balanced solu- tions for seed plants.’’? Ibid., 7: 307-327, 1920, p. 308. to bo May 5, 19: ve essentially of four parts: the upper reservoir (R), the constant-level tank (L), the lower reservoir (QO), and the culture vessel (V). The upper reservoir (R) holds 5 gallons of solu- tion when full, and acts like a constant-pressure aspirator, drawing air through tube A’A and delivering solution through the siphon tube (B), to the constant-level tank (L). The latter is a piece of 5-em. glass tubing closed below by means of a rubber stopper with three tubes, B, E, and D. Solution flows into the tank through tube B, at a rate somewhat greater than is required for the culture vessel, and the excess passes into the lower reservoir (O), through the tube E, the tank level being auto- matically maintained at the top of the last- mentioned tube. The rate of flow through B is adjusted by adjusting the height of the lower end of tube A with reference to the upper end of E. Solution flows at a practically constant rate from the constant-level tank, through a small-bore delivery tube (D), and drips regu- larly into the thistle-tube receiver (F') of the culture vessel. The desired rate of flow through tube D is secured by adjusting the height of the upper end of E with reference to leet: ; SCIENCE 485 the lower end of D—that is, by adjusting the “head” maintained by the constant-level device. The culture vessel shown is a 3-gallon, glazed earthenware “butter” jar, covered by a paraf- fined top, of wood, cement or plaster of Paris, with eight large openings, in which are set the flat cork stoppers that support the plants. There are five wheat seedlings in each stopper, forty seedlings in all. The top is supported about 4 mm. above the top of the jar. The re- ceiver tube (F) has a waxed-paper cover, through which passes the delivery tube. Tube F extends nearly to the bottom of the culture vessel, and solution flows into the latter, keep- ing it filled to the brim and overflowing at the top, through the waste tube (G). Solution that collects in the lower reservoir (O) has not been vitiated in any way by its passage through the constant-level tank, and it is raised to the upper reservoir (R) from time to time, together with additions of newly prepared solution. This transfer is effected through the tube A”A, by closimg cocks A’ and B’ and applying suction at C (by means of an ordinary filter pump). When the trans- fer is completed, cock C is closed and cocks A’ and B’ are opened. The reservoirs should be covered with opaque paper, to exclude nearly all light and retard the development of alge. The constant level device and the lower reser- voir may be dispensed with entirely if the tem- perature of the upper reservoir can be main- tained practically constant, or if only an ap-’ proximately constant rate of delivery of solu- tion is desired. In this case, tube B would discharge directly into the receiver tube (F). This simpler apparatus is the one employed by Trelease and Free. Doubtless, the apparatus here described may be modified in many ways, to suit the facilities and requirements of different experimenters; but this form operates very satisfactorily. As thus far used, a series of five are delivering five different solutions to their respective cul- ture vessels at a rate of about 16 liters a day, which amounts to 400 ee. a day for each of the forty plants in the culture. With liter jars, five plants per culture, and solution re- newal every three and one half days (as in the plan published by the National Research 486 Council Committee on Salt Requirements of Plants) each plant would receive 57 ¢.c. per day. y Sam F. TRELEASE Burton E. Livingston LABORATORY OF PLANT PHYSIOLOGY, THE JOHNS HopKINS UNIVERSITY, MarcwH 23, 1922 NOTE ON THE SYNTHESIS OF ETHYL BUTYRATE IN EGG SECRETION In our analyses of egg secretion, Miss Wood- ward: and I? have isolated an enzyme of the lipase group. The material, precipitated as a white powder, is soluble in both sea-water and fresh. In the presence of this “lipolysin,” droplets of egg fat decrease in diameter while the hydrolysis of other neutral fats and the cleavage of ethyl butyrate are measurably ac- celerated.® Since lipolysin is a parthenogenetic agent; * since the unmodified egg-secretions also have parthenogenetie® and lipolytic? powers; and finally, since eggs with secretions removed by brief exposure to charcoal are completely sterile? it seems likely that lipolysis plays some réle in the normal initiation of develop- ment.! However, the evidence that egg-secre- tions have these powers is still incomplete. It has not been reported whether, under condi- tions significant for fertilization theory, the effects already observed are reversible. Accordingly, I prepared egg-seeretion as free from contamination as possible and used ehloroform to inhibit bacterial action. To 10 or 15 «ce. of this, I then added, in one set of experiments, .5 c.c. of absolute ethyl alcohol; in another, 5 ¢.c. of 2N. Butyrie acid was intro- duced last of all. The final concentration of the acid was roughly .25 N. and .4 N. The acidity of the systems was, of course, immediately reduced by the salts present in both the secretion and the sea-water. Under the cireumstances then, the loss in total acidity has no meaning for the problem in hand. Only 1 Woodward: J. Exp. Zool., Vol 26, pp. 459-501. 2Glaser: Am. Nat., Vol. LV, pp. 368-373. 3 Glaser: Biol. Bull., Vol. XLI, pp. 63-72. 4 Woodward: Biol. Bull., Vol. XLI, pp. 276-279. 5 Glaser: Biol. Bull., Vol. XXVI, pp. 387-409. SCIENCE [Vou. LV, No. 1427 differences are important, and, if in the pres- ence of egg-secretion, a portion of the butyric acid is transformed into butyric ester, the tubes in which this oceurs should require less alkali than the controls in order to reach the turning point, Px., of di-brom-thymol-sulpho-phthalein. The differences of acidity actually found be- tween 10 c.c. of control and 10 ce. of digest, - in one case, after 40 minutes at 20° C., amount- ed to .8 ¢.c. NaOH N/20; in another, after an hour, to 2.4 ¢.c. NaOH N/20, in both instances, in favor of the controls. Absolutely, these discrepancies are small, but even greater differences might fail to be con- vineing, for conceivably, the organic constitu- ents of the secretion, still largely unknown, might in some way destroy or otherwise remove butyric acid from the reaction system. For- tunately, however, ethyl butyrate has an odor so penetrating and characteristic that even minute traces can be unmistakably detected. By this delicate test, the ester, regularly absent from the controls, was present in noticeable quantities in the digests with secretion and was easily recognized by others not familiar with the experiments. For eighteen hours the ester smell continued to grow in intensity. On the basis of these results, I attribute to ege-exudate the power to accelerate the syn- thesis of ethyl butyrate. This is neither more nor less than might be expected since the same exudate also -accelerates the corresponding hydrolysis. Orto GLASER AMHERST COLLEGE, FEBRUARY 2, 1922 NATIONAL ACADEMY OF SCIENCES At the annual meeting of the National Acad- emy of Sciences held in the U. S. National Museum, Washington, on April 24, 25 and 26, papers were presented as follows: The new building of the National Academy and the National Research Council: C. D. Waucort, President of the Academy. The erection of a magnificent building, costing $1,300,000, as the home of the National Academy of Sciences and the National Research Council, will shortly be begun on the square bounded by B and C streets, 21st and 22d streets, northwest, Washington. The May 5, 1922] building will serve as a center for American sci- ence in its various fields. Here investigators from all parts of the country and from abroad may be brought togther for counsel and cooperation. Facing the Lincoln Memorial, the marble building in simple classical style will rise three stories from a broad terrace. It has a frontage of 260 feet. On the first floor there will be an audito- rium seating some 600 people, a lecture hall hold- ing 250, a reading room, library, conference rooms and exhibition halls. The basement con- contains a cafeteria and kitchen. The two upper floors will be devoted to offices. The building is the gift of the Carnegie Corporation of New York, while the ground was bought at a cost of about $200,000 through the donations of about a score of benefactors. Bertram Grosvenor Good- hue of New York is the architect. He is one of the best known architects in the country and de- signed the St. Thomas Church, the West Point buildings, the Nebraska State Capitol and many other buildings. The contract for the construc- tion of the building has been let to Charles T. Wills, Inc., of New York, and it is expected that the building will be ready for occupancy in the autumn of 1923. Lee Laurie, the sculptor, has been selected to do the decorations, which will symbolize and depict the progress of science and its benefits to humanity. A series of bronze bas- reliefs will show a procession of the leaders of scientific thought from the earliest Greek philoso- phers to modern Americans. On passing through the entrance hall the visitor will find himself in a lofty rotunda. Here he will see in actuai opera- tion apparatus demonstrating certain fundamental scientific facts that hitherto he has had to take on hearsay. < 1011 calories, or five million times the energy liberated when the same weight of hydrogen unites with oxygen to form water. This is about three fifths of the energy which would be liberated in the complete change of 238 grams of uranium into 206 grams of lead, 32 grams of alpha particles, —6N electrons (where N repre- sents the avogadro number) and about 0.05 grams of radiant energy. The energy which would be liberated in the formation of alpha particles from hydrogen is so great that it would seem that this reaction should proceed at an extremely high speed. That this is not the case may be due to the fact that for some unknown reason one elec- tron does not form a very stable union with one proton, but the common ratio is two of the latter to one of the former in the most stable aggregates. Thus it is not improbable that four protons and two electrons seldom meet at one time in such relative positions as to allow the alpha particle to be formed. It may be suggested that the first step in the building of an alpha particle may be the formation of the aggregate pe, which is sta- ble with i but easily unites with a like particle to form the group (p,é),, or the alpha particle. According to Rutherford’s hypothesis the carbon nucleus con- sists of four groups of the formula p_e. While the evidence in favor of this assumption is not spe- cially convincing, there is on the other hand no evidence against it. However, definite evidence will be presented which proves that the alpha par- ticle is the principal group concerned in the reference to aggregation, SCIENCB [Vou. LV, No. 1427 growth of carbon nuclei into those which are heavier. The composition of any complex nucleus may be expressed by the formula (D,€) (PE) in which n represents the isotopic number. This number varies from 0 to 54 for known atomic species, and is 0 for most atoms. In the range in which the isotopic number is small, the most abundant species of atoms are those whose isotopic numbers are divisible by 4, while for higher iso- topie numbers the maxima of abundance are not so distinct, and occur in general for the isotopic numbers which are even. The most important relations which should be taken into consideration in showing the nature of the general system of isotopes are: (1) The number of negative elec- trons in most atom nuclei is even, so in general the atomic weight and the isotopic number are both even when the atomic number is even, and are both odd when the atomic number is odd. (2) As the atomic number increases the isotopic number of the more stable isotopes of an element also increases. This may be expressed as follows: As the net positive charge on an atom nucleus increases the atom becomes more unstable unless at the same time the nucleus becomes more nega- tive with reference to its relative content of nega- tive electrons. (3) For any set of isotopes the atoms become more unstable with reference to a beta disintegration as the isotopic number increases, and more unstable with reference to an alpha particle disintegration as the isotopic num- ber decreases. This relation does not specify what form of disintegration will take place in any special case, since this probably depends upon the grouping, but it does give the relative rate for any disintegration which actually does take place. Obviously this relation has been tested only in the case of the radioactive elements. The rela- tions which exist in the general system of isotopes will be presented in the form of an extensive plot which exhibits a large number of relations, many of them periodic, which can not be well treated in an abstract. A theory of electric conduction in Proressor Epwin H. Hatt. Cooperative studies of California earth move- ments: Dr. ARTHUR L. Day, director of the Geo- physical Laboratory, Washington. metals : Institution of Recent information from astronom- ical sources has indicated a northward crustal movement of small magnitude in northern Cali- fornia. The suggestion has been made that the accumulated strains produced by such movement eventually produce rupture and an elastic recoil Carnegie May 5, 1922] or earthquake. Cooperative studies have been undertaken by the Carnegie Institution of Wash- ington, U. S. Coast and Geodetic Survey, U. 8. Geological Survey, the geological departments of the universities of California, the California Insti- tute of Technology, and the Bureau of Standards, with the purpose of gathering precise data bear- ing upon this subject. It is a part of the pro- gram not only to locate the surface displacements either gradual or disruptive, but also to develop instruments and establish stations for the location of sub-surface zones of movement. Geological overthrusts and underdrags: ressor W. M. Davis, Harvard University (by title). Overthrust masses of earth crust haye been found, the front of which has advanced a score of miles or more beyond its original posi- tion. On tracing such masses backward, no indi- cations of a cavity left by their advance have been found; hence it may be possible that they have obliquely emerged from beneath rear por- tions of the crust which have not taken part in their movement. If so, the rear portions should exhibit displacements due to what may be called the ‘‘underdrag’’ of the obliquely emerging Such displacements would be character- ized by an increase in horizontal dimensions in the direction of underdrag, and manifested by normal faults on moderately slanting fault planes. The mountain ranges of the Great Basin of Utah and Nevada appear to exhibit such displacements. The effects of winds and barometric pressures on the Great Lakes: Dr. J. F. Hayrorp, North- western University. The surface of the water of any one of the Great Lakes is never level except by accident. It always has a slope in some direc- tion, produced by the wind, by barometrie pres- sures, or by the water of the lake oscillating as if it were in a great wash-basin. The correct knowledge of these things is a key to various scientific problems and ultimately will prove to be worth millions, in their application, to the people of the United States. It has long been known that a wind blowing over a lake tends to pile up the water on the lee shore and to pull it down on the windward shore. How large is this effect? Is the response of the water to the wind imme- diate? It has not been possible to answer these questions confidently in the past. Now it is known that the response is prompt and that the effect of a given wind in disturbing the water level at any point in the world may be computed in advance. It is known that the strongest winds that blow have almost no effect in changing the Pro- masses. SCIENCE 493 water level at various points, as, for example, at Milwaukee on Lake Michigan and Mackinaw City on Lake Huron. On the other hand, it is known that a wind of 50 miles per hour from the south- west piles up the water a foot at Buffalo and pulls it down simultaneously more than a foot at the west end of Lake Erie. The reason for this extreme contrast between. different places and for the fact that the wind effect is greatest in long shallow bays is now accurately known. The lake surface is also continually tilting up, first in one direction, then in another, in response to varying barometric pressures. The water tends to go toward a region of low barometric pressure and pile up there. Such effects at Mackinaw City and Milwaukee frequently amount to three inches or more, although wind effects at these points are almost inappreciable. Just as a piano string struck once, or the air in an organ pipe continu- ously agitated by a reed, vibrates with its natural period, so the water of each of the Great Lakes under the many impulses given it by the winds and barometric pressures oscillates back and forth. Sometimes the whole of a lake is concerned in an oscillation, and sometimes the lake oscillates in parts. Such oscillations in lakes are called seiches. Striking similarities between the igneous rocks of Brazil and South Africa: Dr. H. A. Brouwer. Striking similarities in geological age and in composition exist between the old granites and gneisses with intrusive younger granites, the pre- cretaceous intrusive sheets of diabase, the lava flows of the Serra Geral and the Drakensberg, the pipes and dykes of kimberlite and the intrusive and effusive alkali rocks (nephelinesyenites, phono- lites, ete.). The alkali rocks are found on both sides of the Atlantic Ocean near the coast; they form denuded volcanic centers and if the west coast of Africa and the east coast of South America be considered in juxtaposition the loca- tion of these older volcanoes would be very sim- ilar to that of the young voleanoes of alkali rocks (Kenia, etc.) near the young fracture- system, bordering the rift valleys in East Africa. Very long dykes of nephelinesyenites prove the ex- istence of similar fractures in the central part of South Africa. Fauna of the Pleistocene asphalt deposits of McKittrick, California: Dr. Joun C. Merriam, president of the Carnegie Institution of Washing- ton, and Curster Srock, University of California. The discovery of an enormous accumulation of perfectly preserved remains of extinct animals found in asphalt beds in the environs of Los 494 Angeles, California, some years ago furnished some of the most interesting data on the history of life thus far secured in America. A similar deposit representing an assemblage of animals of a somewhat different type has recently been opened for extensive investigation on the western border of the Great Valley of California. Re- mains of a wide variety of higher animals and birds were found at this new locality. The col- lection represents the geological period immedi- ately preceding the present and offers the best opportunity thus far known to study the life of this late geological stage under the conditions obtaining in the Great Valley of California. The telephone engineer a public trustee: FRANK B. JEWETT, vice-president, Western Electric Com- pany. In his paper, which was a statement of the unique position which the telephone engineer of to-day occupies in relation to the general public, Dr. Jewett outlined the organization of the communication service of the United States and pointed out the position and scope of work of the engineer in this organization. Dr. Jewett indicated that the telephone art, even at the end of nearly half a century of the most intensive development and monumental growth, was still far from being an agency requiring little or no change. He showed that the recent developments in physical science had opened up vast possibili- ties of new and improved communication services which the telephone engineer was endeavoring to make available for public service, and indicated some of the problems which were being success- fully attacked. He also pictured some of the tre- mendous difficulties which confronted the tele- phone engineer in incorporating these new services into the existing structure, which was itself grow- ing rapidly along already developed lines, with- out producing disruptions of service. Finally he pointed out that the telephone engineer of to-day had come to recognize that his function was in effect that of a public trustee and that his prob- lem was not alone that of developing new and improved instrumentalities, but of developing these instrumentalities and making them available to the publie without subjecting the telephone user to annoyance as a result of experimentation on the public at large. The loud speaking telephone: FRANK B. JEw- ETT, vice-president, Western Electric Company. For many years, and in fact almost from Dr. Bell’s discovery that human speech could be trans- mitted to distant points electrically, there has been incessant quest for a satisfactory loud speaking telephone. Innumerable attempts to devise instru- SCIENCE [Vou. LV, No. 1427 ments of this kind have been made in the last thirty or forty years and until recently all have been substantial failures. Recently, however, really successful instrumentalities have been pro- duced and the field of possible influence on all social and human relations which has opened up was evidenced graphically in the Armstice Day exercises attendant upon the burial of the Un- known Soldier at Arlington, Virginia. In these ceremonies vast audiences in San Francisco, New York and Washington listened to the President of the United States and other speakers and joined in common exercises of respect to America’s dead. -Dr. Jewett’s paper, which was illustrated by a local demonstration and by a demonstration of talking over the regular telephone wires from New York, described the physical and electrical problems whose solution had to be achieved in order to make the loud speaking telephone a success. He pointed out that the problem con- sisted essentially of four main elements, namely: (1) The development of telephone transmitters capable of picking up the sound vibrations of the speaker’s voice when the latter was speaking normally at some distance from the instrument, and of faithfully translating these vibrations into electrical vibrations for transmission over the wires; (2) the transmission of these electrical vibrations undistorted to the distant point; (3) the amplification at the distant point of the re- ceived electrical impulses to an energy value many times greater than that produced by the trans- mitter at the speaker’s end of the line; and (4) the translation back into sound vibrations of these greatly amplified speech waves through an appro- priate loud speaking receiver. He pointed out that if the received speech through the loud speaking receivers was to be of acceptable quality no serious distortion could take place in any of the links of the chain from the speaker to his distant audience, and that the inherent charaec- teristics of the loud-speaking system call for even more faithful reproduction than is necessary in ordinary telephones of recognized good quality. He pointed out further that because of the neces- sity of using ordinary telephone lines, which in most cases were in close proximity to numerous other telephone lines used in the regular way, it was necessary that the currents transmitted from one end ot the line to the other should be sub- stantially of the same magnitude as those pro- duced in the use of the ordinary telephone. He showed that this requirement, combined with the necessarily inefficient energy characteristics of the originating transmitter and the tremendous energy May 5, 1922] requirements of the loud speaking telephones had made the problem inherently insoluble until means had been developed for producing telephone lines with very uniform transmitting characteristics and until amplifying devices of great power, uni- formity and freedom from inherent distortion production:had been developed. The physical examination of hearing and binaural aids for the deaf: R. L. WEGEL, Western Electrie Company, New York City. The function of the auditory sense is to detect sounds of dif- ferent wave shapes, the ratio of the pressure on the ear drum varying over a range of 1 : 1,000,000. It must also differentiate between sounds so nearly alike that no existing physical apparatus is capable of separating them. Binaural audition adds a sense of orientation and discrim- ination together with a more uniform sensitivity for sounds approaching from different directions. A binaural set for aiding the hard-of-hearing was exhibited. An abnormal auditory sense may be regarded as one lacking to a greater or less de- gree in (1) range of sensation (frequency or intensity), (2) quality of sensation in various regions of the range, (3) binaural sense. Methods have been studied for exploring the outstanding elements of these functions. A new audiometer for measurement of hearing was shown. The relative sensitivity of the ear at different levels of loudness: Dr. Donatp MacKeEnzin, Western Electric Company. Up to the present time there has been no satisfactory technique for loudness comparisons of different tones. In this paper a description is given of an alternation phonometer which makes it an easy matter to ad- just to equal loudness two tones of different pitches. With this instrument a determination has been made of the relative sensitivity of normal ears of both men and women, over the pitch range from bass G to C5, at sound intensities midway between the faintest audible and the painfully loud. It is found that the sound energy necessary to produce a given loudness is smaller the higher the pitch, at least within the range examined. Different ears agree more closely at these intensi- ties than at the least audible, and no difference is detectible between men and women. Inter- pretation of the results shows them to be in har- mony with Fechner’s law, according to which the difference between the sensations due to two lights of the same color or two tones of the same pitch is proportional to the ratio of intensities of the lights or sounds causing the sensations. This simple law holds only at moderate intensities. Phonometric comparisons by a small number of SCIENCE 495 observers were made at intensities from very faint to very loud. It appears that any one ear varies from day to day, but these variations are most noticeable at the extremes of loudness. The re- sults taken all together strongly suggest that, on the average, the relative sensitivity of the ear to different musical notes is practically the same whether the sounds are loud or faint. Recent progress in aeronautics: PROFESSOR J. S. Ames, The Johns Hopkins University. Coefficients of slip and the reflection of mole- cules: Dr. R. A. Minurcan, Norman Bridge Lab- oratory of Physics, Pasadena. This paper con- tains a presentation of the theoretical relations between the coefficient of slip and the law of reflection of gas molecules from the surfaces of solids and liquids. It presents, also new experi- mental data taken by the author and his pupils which completely check the correctness of this theory. It gives for the first time the exact ratio between the number of impinging molecules which are specularly reflected in the case of a given gas from given liquid and solid surfaces, and the number which are diffusely reflected. The most interesting facts brought to light by the investi- gation are, first, that this ratio is different for different kinds of molecules when the nature of the surface remains constant, and, second, that there is a larger coefficient of slip between oiled surfaces and gases than between the same gases and ordinary unoiled surfaces of metal or glass. Origin of penetrating radiations of the upper air: Dr. R. A. Mi~tixan, Norman Bridge Lab- oratory of Physics, Pasadena. It is of intense interest to know whether the penetrating radia- tions which have been heretofore studied up to altitudes of 9,000 meters are of cosmic or of terrestrial origin. Pre-war observations made in manned balloons in Germany gave indications that they were of cosmic origin. Observations pub- lished last year from the University of California were in opposition to this view. Indeed, the Cali- fornia observers attributed the increase in the rate of discharge of the electroscopes with increasing height, as found in Germany, to the effects of temperature upon the electrical conductivity of the supports of the gold leaves in the electro- scopes. The observers at the California Institute of Technology have definitely proved that the tem- perature effects upon the supports when the ex- periments are properly performed are practically negligible. They are now making balloon flights in which self-recording instruments are sent up to the very top of the atmosphere, that is, to a point at which only one sixteenth of the atmosphere is 496 still above, and should be able to determine with certainty by these experiments whether the pene- trating rays are of cosmic or of terrestrial origin. While the instruments sent up weigh but 175 grams (6 ounces) they are capable of bringing back a complete record of the temperatures, the pressure, and the penetrating radiations existing at all of the altitudes which they reach. These altitudes should be about three times as great as those ever obtained before in experiments of this kind. These balloon flights will be reported later. On the measurement of a physical quantity whose magnitude is influenced at random by pri- mary causes beyond the control of the observer, and on the method of determining the relation between two such quantities: Dr. WALTER A. SHEwHART, New York City. The objects of scien- tific investigation are twofold, i. e., the determina- tion of some form of average value and its prob- able variation, and the determination of the rela- tion existing between two or more such quantities. In many problems of physical and engineering science it is possible to assume that causes of variation of the variable under consideration may be controlled by the observer. Certain problems in these sciences as in the fields of economics and biology arise, however, wherein it is impossible to control the causes of variation, and they must be submitted to a statistical method of solution. An outline of the necessary analysis is given and illustrated. Application of the theory of correla- tion and its physical interpretation was discussed. Ether-drift experiments at Mount Wilson in 1921 and at Cleveland in 1922: Proressor Day- TON C. MILLER, Case School of Applied Sciences, Cleveland, Ohio. The Michelson-Morley experi- ment to detect the relative motion of the earth and ether was performed at Cleveland in 1887. In explanation of the null result then obtained, the Lorentz-FitzGerald effect was proposed. The experiment was repeated by Morley and Miller in 1904, with a much larger and more sensitive ap- paratus, which was also especially arranged to make a direct test of the Lorentz-FitzGerald effect. Again a null result was obtained. The suggestion was then made that the earth drags the ether, and while there is no ‘‘drift?’ at the surface of the earth, it might be perceptible at an elevation aboye the general surface. The experi- ment was again performed by the present author, at the Mount Wilson Solar Observatory in March and April, 1921, where the elevation is nearly 6,000 feet. The results indicated an effect such as would be produced by a true ether-drift, of about one tenth of the expected amount, but there SCIENCE [Vou. LV, No. 1427 was also present a periodic effect of half the fre- quency which could not be explained. The inter- ferometer had been mounted on a steel base and in order to eliminate the possibility of magnetic disturbance, a new apparatus with a concrete base and with aluminum supports for the mirrors was constructed. Observations were made in November and December, 1921, the results being substantially the same as in April. Before any conclusions can be drawn, it is necessary to deter- mine the cause of the unexplained disturbance. The interferometer has again been mounted at Case School of Applied Science, in Cleveland, and observations are now in progress, the results of which were reported in this paper, which was illustrated by lantern slides and motion-pictures. About 700 feet of motion-picture film was taken at Mount Wilson by a member of the observatory staff, showing the location and construction of the apparatus and also the method of making the observations. Some extensions in the mathematics of hydro- mechanics: Dr. R. 8. Woopwarp, Washington, D. C. The most general specification of fluid motion requires a minimum of twenty symbols, or factors. Of these the most important are the three velocity components, the three spin com- ponents, and the four potentials from which the velocity components are derived by differentiation. The first part of the paper shows how it is more advantageous, in general, to make use of the rela- tions between the Laplacians, or the Laplacians of the Laplacians, of these factors, than it is to make use of the relations of a lower order. It is shown that this extension greatly systematizes and simplifies the statement and the solution of problems on the motion of viscous fluids. The second part of the paper refers to what the author has ventured to call preharmonies, which are the triple integrals of harmonic functions which figure extensively in hydromechanics. It is shown how to find all of the preharmonies corresponding to all of the harmonie functions of positive and negative integral degrees. Normal coordinates and Einstein space: G. D. BIRKHOFF. ; Algebraic solutions of Linstein’s cosmological equations: EDWARD KASNER. The geometry of paths: OSWALD VEBLEN. Biographical memoir of Dr. J. A. Allen: F. M. CHAPMAN. Biographical memoir Gould: G. C. Comstock. Biographical memoir of Henry Pickering Bow- ditch: W. B. CANNon. of Benjamin Apthorp NEW SERIES a ='S1G) 99 SINGLE Copiss, 15 Ors. Vou. LV, No. 1428 Fripay, May 12, 1922 ANNUAL SUBSCRIPTION, $6.00 SOME MODERN SCIENCE BOOKS Civic and Economic Biology—ATWOOD A Textbook for Students. Subject presented in the form of seven units. : By Wm. H. Arwoop, M.A., M.S., Milwaukee State Normal School, 364 illus. Cloth, $1.68 Interesting Neighbors—JENKINS Nature Stories for Boys and Girls. By Pror. Otiver P. Jenxins, Stanford University, 81 Illus. Cloth, $1.12 Microbiology—MARSHALL . 3d Edition by various writers. Edited by Pror. C. E. Marsuari, Mass. Agric. College, 200 Illus- trations. 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Batrey, Ph.D., University of Kansas. 92 Illustrations... Cloth, $2.50 Detection of Poisons and Powerful Drugs—AUTENREITH fw pes 5th Revised Edition, Translated by Wm. H. Warren, M.D. Illustrated. 9/7 Cloth, $3.50 Volumetric Analysis—HAMPSHIRE f 3d Revised Edition. By CHartes H. Hampsurre, ScB. (Lond.) w WAT Cloth, i $75 Textbook of Organic Chemistry—CHAMBERLAIN \ By JosrepH ScuppER CHAMBERLAIN, Ph.D., Mass. Agricultural College. XN WV Cloth, $4.00 Organic Chemistry, Volume II—RICHTER-D’ALBE SE | By RicHarp Von Ricuter; Translated by E. E. Fournizr D’Axze, D.Sc. (Lond.) Cloth, $8.00 Colloid Chemistry of the Proteins—PAULI By Dr. W. Pautt (Vienna) Translated by P.C. L. THorne, M.A. (Lond.) Illus. Cloth, $2.25 Physics and Chemistry of Colloids—HATSCHEK By Emit Hatscuex (Lond.) 4th Edition, Illustrated. Cloth, $2.25 Ammonia and Its Nitrides—MAXTED By E. B. Maxtep, Ph.D. (Lond.) Illustrated. Cloth, $2.00 Qualitative Chemical Analysis—TOWER 4th Edition. By Oxrrn F. 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This volume contains 57,474 entries by Mitosis in Endamoeba dysenteriae in the bone authors from Mare to the end of the let- marrow in Arthritis deformans terme “We idly cast our eyes over titles, and and pass from water-spouts to fan- gauges in mines, from cannibalism in Endamoeba dysenteriae in the lymph glands of figs Re tga ‘te the spectrum a ¥ Man in Hodgkin's disease. comet, from a loxodromic pendulum In one cover, 25 cents. to the use of yeast in diabetes, or from theta functions to the composi- Mitosis in the encysted stages of Endamoeba tion of Hexamethylentetramins.” Gal (Reels (Cs jase) BO artic. Volumes I to XVII contain 279,902 entries of scientific papers. Prices on request. Vol. XVII cloth $45.00; morocco $52.00 net. University of California Press THE UNIVERSITY OF CHICAGO PRESS 5811 Ellis Avenue, Chicago, Illinois Berkeley California PSYCHOLOGY “ASTUDY OFMENTAL LIFE By ROBERT S. WOODWORTH Professor of Psychology in Columbia University “T have no hesitation in pronouncing Professor Woodworth’s ‘Psychology’ the most distinctive and significant contribution to the collection of texts on this subject that has appeared in recent years.’—JosEPH JAstRow, University of Wisconsin. “In my opinion it is the clearest, and most readable presentation of the subject that exists at the present time. The author’s happy faculty of taking everyday illustrations and making the psychology residing in them apparent is worthy of comment.’—A. M. Jorpan, University of Arkansas. “His dynamic emphasis is evident not only in his treatment of the human mechanism from a more or less behavioristic viewpoint but also in his study of the conScious life and of personality development. The breaking up of the topic of the nervous system and its in- cidental presentation with the appropriate sections of the behavioristic psychology is an ex- cellent point. What is also to be recommended is the style of writing—it is the most effective for presentation to undergraduates I have ever seen.”—J. F. DasuieLt, University of North Carolina. HENRY HOLT AND COMPANY New York Chicago Boston San Francisco SCIENCE—ADVERTISEMENTS iii \ nag i ( 7 The Bovie H-ion Potentiometer for the Chemist, Biologist and Bacteriologist The Bovie H-ion Potentiometer facilitates the determination of acidity or alkalinity of solutions. The indications of the instrument are given directly in terms of H-ion concentration. The actual reaction of a solution for a given condition may be determined by a single reading, or a curve may be developed (semi-automatically) showing the changes in the actual reac- tion with changes in the condition of the solution. A curve so developed gives data for determining the total reac- tion of the solution. This instrument especially facilitates the work of the bac- teriologist in adjusting the reaction of culture media to some definite value. The standard cell, galvanometer, and rheostat of the potentiometer circuit are contained within the instrument. External pieces required are a storage or dry cell and the electrodes with their accessories. Bulletin S767 describes the Bovie H-ion Potentiometer. LEEDS & NORTHRUP COMPANY Electrical Measuring Instruments 4901 Stenton Ave., Philadelphia, Pa. iv SCIENCE—ADVERTISEMENTS Laboratory Apparatus Scientific Instruments Reliable Analytical Chemicals C>omplete equipments for Research and General Laboratories Apparatus For : Analytical Work Asphalt—Oil—Tar Testing Assay and Metallurgy Bacteriology Biology Cement Testing Chemical Testing Coal Testing Co? Crushing—Grinding—Pulverizing Distilling Drug Testing Drying Electric Heating A . Food Testing New Fuel Economy CATALOGUE Hardness Testing in Heat Indicating and Recording Preparation Health Board Hospitals Metallography Microscopy Mining Paper Testing Physico-Chemical Soil Testing Sugar Testing Titration Zoology BRAUN-KNECHT-HEIMANN- CO. “Founded 1852’ 576-584 Mission Street San Francisco, Calif. LABORATORY EQUIPMENT AND CHEMICALS Inventors—Manufacturers—Exporters—Distributors Cable Address, “‘-BRAUNDRUG”’ Los Angeles House All Codes used. The Braun Corporation SCIENCE A Weekly Journal devoted to the Advancement of Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS 11 Liberty St., Utica, N. Y. Garrison, N. Y. New York City: Grand Central Terminal Annual Subscription, $6.00. Single Copies, 15 Cts. Entered as second-class matter January 21, 1922, at the Post Office at Utica, N. Y., under the Act of March 3, 1879, May 12, 1922 Vou. LV No. 1428 The Factor of Safety in Research: Pro- FEessor A, FRANKLIN SHULL.........-..-.--2--------- 497 What becomes of the Fur Seals: G. DALLAS TETYAUNTIN/AUID yoeset te nee ee REIN PRONE sas iucn resea wn eeeeer ena 505 Scientific Events: Loss from Animal Diseases; The California State Fisheries Laboratory; Mathematical Publications; Grants for Research by the National Academy of Sciences; The Elia- kim Hastings Moore Fund.........--------------------- 507 Scientific Notes and News......--.----..--------0-1---- 510 University and Educational Notes.........-...--.-..- 513 Discussion and Correspondence: Did Humphry Davy melt Ice by rubbing Two Pieces together under the Receiwer of an Air Pump? PrRoressor ARTHUR TABER Jonges. A Paracelsus Library in this Coun- try: Dr. Cart Hering. The Teaching of Evolution in the Baptist Institutions of Texas: 8. A. R. The Metric Campaign: HOWARD! RICHARDS 22... ite ios ecec cece beatseesacee 514 Scientific Books: The Biological Researches of Gustaf Ret- zgius: Dr. O. LARSELL 516 Special Articles: Polyploidy, Polyspory and Hybridism in the Angiosperms: Prorrssor HE. C. JEr- FREY, A. E. LONGLEY, C. W. T. PENLAND. The Reaction of Drosophila to Ultraviolet: Dr. F. E. Lutz, Proressor F. K. Ricut- INENADAD CoS ee i SRS re Ee er eet 517 The American Association for the Advance- ment of Science: Section A—Mathematics and Associated Societiés: PROFESSOR WILLIAM H. ROEVER. Section B—Physics—and Associated Soci- eties: PRoressor S. R. WILLIAMS. Section K—Social and Economic Sciences: Dr. FreDERIcK L. HorrmMan. Section N— Medical Sciences: Dr. A. J. GOLDFARB........ 519 THE FACTOR OF SAFETY IN RE. SEARCH! ONCE in the drear dead days unfortunately still fresh in memory the head of a great insti- tution for the aid of education wrote, with reference to research, these words: “In the last two decades more sins have been com- mitted in its name against good teaching than we are likely to atone for in the next genera- tion.” Evidently the time of reformation had not arrived when this disparagement was uttered, for some ten years later the same pen recorded history as follows: “Much of that which has gone on in American universities under the name of research is in truth only an imitation of research.” To some of you, more than commonly zealous in support of investigation and with a back- ground of rural experience, these words may come with memories of the odor of new mown hay and visions of waving yellow fields and the reflection that excessive heat sometimes causes mental aberrations. For the quoted passages could have come only from an annual report, naturally written just after the end of the fiscal year; but unfortunately for this simple explanation, the fiscal year of the insti- tution in question does not end in June, and the derogation of research was conceived in the cool gray days of autumn. Moreover no charge of alienation of reason could be brought against the author of these rebukes that would not lodge with equal justice in other quarters. The chief executive of another great institution which has done and is doing as much in the field of research as any of its kind in America voiced a similar sentiment thus: “Quite too much attention is paid to those who when they make some slight addition to their own stock of information fancy that the world’s store of 1 Address of the President of the Michigan Academy of Science, Arts and Letters, March 29, 1922. 498 knowledge is thereby increased by a new dis- covery.” It is not fair in this case to remove the quoted words from their context, which was really a commendation of research as a university function. But in view of the wari- ness with which such views are expressed in public, the slight stricture here permitted to appear is probably only the weather-worn out- cropping of a stratum much more extensive. Indeed, it is not an uneommon idea even among men actively engaged in investigation that there is a fearful waste of energy upon research that might as well be left undone. Has it not been pointed out in every discussion of cooperation in scientifie work how much better would the world be served, could the labor now being frittered away upon unimportant mat- ters be organized under the direction of some one capable of separating the wheat from the chaff? A few years ago Edwin Linton, in an appreciation of Spencer Fullerton Baird, who must have been a practical person to have deserved the commendation bestowed upon him, wrote: “I am led to wonder if the failure of science to influence legislation in the inter- ests of the people is not to be charged to the propensity on the part of these leaders to shun the practical.” Likewise the energetic chief of the Federal Bureau of Entomology, on look- ing through a collection of doctor’s theses with the interests of his own bureau in mind, finds “that only a very small percentage of this out- put represents work which ean be of the slight- est use to humanity in its immediate problems regarding the insect world.” “At present most of the best men are working away in their laboratories practically heedless of... the tremendous necessity for the most intense work by the very best minds on the problem of over- coming and controlling our strongest rivals on this planet.” Had Dr. Howard been a phys- icist, or engineer, or metallurgist, he could no doubt have changed a word here and there and made the same statement with equal vigor. Those of you who every May have scanned a series of doctor’s theses may wish to explain in some other way the fine despair with which he exclaims, “And how can we emphasize the prime importance of devoting our earliest attention to those problems which most imme- diately concern our well being.” SCIENCE [Vou. LV, No. 1428 These are not the only investigators who have views that substantially agree in regard- ing much research as wasted, and the number who are willing to express such views in public is presumably but a fraction of the number who hold them in private. Research is not, it is true, alone in including much which is of no direct value. How much of literature could not be suppressed, to the advantage of author, publisher and reading public? Is there not much of so-called art which might never have been born, and leave the world happier for its non-existence? How- ever, to recite the ills of sister lines of en- deavor is not to eure or even excuse our own. But are they ills? Is it to be in any wise deplored that the research by which John Brown wins a degree, or Professor Jones keeps his mind fertile while teaching, is not of the sort that promises to lighten the burdens of human society or inerease its means of pleasure? At least, is it to be deplored to the extent that Student Brown and Professor Jones should have refrained from research if they were unable to fix upon a more practical subject of investigation? I believe it is not only not to be regretted that some pieces of research must seem trifling, but that the system under which we now operate, in which un- important or perhaps in themselves valueless contributions are sometimes made, accom- plishes a greater result than any system that could be devised under which such insignificant researches would be excluded. Let me disillusion at once those who imagine that I am about to defend research on the ideal ground that truth for truth’s sake is indeed practical, and that therefore any investigation which discovers a grain of that precious com- modity is an economic gain. I would be will- ing to make such a defense if it were desirable to pitch the combat on so high a plane. But it is no time to wrestle with the angels above the clouds while the forces of evil are unvan- quished in the valley. I have no intention of discussing at length what is practical. Per- haps one should regard general knowledge as the most practical kind. The elimination of ennui and of the loose habits formed in the periods of mental vacuity to which the ig- norant and the merely technically trained are May 12, 1922] frequently subjected may result in improved health and increased longevity, and so be a highly practical matter. An engineer or a physician seldom reaches the economic heights of his profession without the engaging or com- pelling mental exterior which only a general education can develop to the full. One need not admit that only those things are practical which look practical to the world at large. One need not even admit that a thing is useless even if it could be known—as it can not—that no better food supply, or no decrease of hardship would ever come out of it. The conception of the practical which makes it include general knowledge is capable of strong support, but I shall not avail myself of it. I propose to ac- cept, for the purpose of this address, the definition of the practical as given by the man in the street. Nor have I any intention of deciding whether a practical education is the best one. So far as I can see, the whole science of astronomy might be forgotten, and my present daily life would go on about as before. I would enjoy the sunlight and profit by its energy as I do now. The seasons would follow one another in the same order if we were ignorant of the causes of their succession. The eugenic effects of moonlit and starlit nights would be as great as at present. Should the navigator who brings me comforts from dis- tant parts of the globe get into trouble, that difficulty could soon be obviated. But one ele- ment of vastness in the thoughts of men would be gone forever, and it is not unlikely that experiences of other kinds would shrink in proportion. What physical advantage, gained by devoting to some applied science the energy now devoted to the planets, could compensate for such a loss? It is not my purpose, however, to address myself to idealists, though no doubt that is the character of this audience. Arguments on a lower level are now much more urgent. We are all familiar with the investigations which have been undertaken for the simple purpose of dis- covering scientific truth, but which afterwards have led to results of the highest practical im- portance. Biologists know by heart the story of Professor Harrison who by painstaking ex- SCIENCE 499 periments devised a means of keeping alive a small group of cells after removal from the body of the animal to which they belonged, and of watching them grow under the microscope. He was seeking to demonstrate a principle of morphology and development, and he _ suc- ceeded to the satisfaction of himself and his co- workers. Neither he nor they considered the possibility that his method of tissue culture would ever be used to the obvious advantage of man. But this method was later used by a great surgeon, who kept tissues alive for years and who pointed out the possibilities which the method contained of disclosing the causes of death and thereby of prolonging human life. Thus the experiments first used to settle a dis- puted question of biology promise, in the opin- ion of many, to bring us nearer to that oldest of human goals, the fountain of eternal youth. The possibility of practical advantage to be derived from these culture methods weighed heavily in the allocation of the Nobel prize in medicine which was bestowed upon the sur- geon. There should be no detraction from the credit due to one who has the vision to discover new uses for old methods, but rather increase of eredit to the original discoverer. Professor Harrison would be the last to ask that the Nobel prize be transferred to him. All he would ask is that research in general be sup- ported in a broad way which will occasionally make possible further practical applications. Perhaps less generally known is the recent improvement of submarine cables, whereby their capacity is increased five-fold. Experi- ments extending over a long period of time had as their aim improved insulation which would prevent or reduce leakage. ‘These efforts suc- ceeded to a marked degree only after another worker, with the mere advance of scientific knowledge in mind, invented a new alloy hav- ing the desired insulating properties. The field of physies is full of such examples. The work of Maxwell on the electromagnetic wave theory led to wireless telegraphy; Roentgen’s rays were discovered in the course of a piece of pure research; and, indeed, all of the early work on electricity was done in a spirit of investigation having no other object than to discover the truth. 500 What might have happened to these dis- coveries had they promised to emerge in an atmosphere in which it was considered that “much that has gone on in the name of re- search is in truth only an imitation of re- search,” can only be surmised. Whether they would have been made in the laboratories of an institution where they stood a chance of being regarded as “sins against good teaching” so heinous as to demand expiation for a gen- eration, may be doubted. Even if their worst prospective reception had been that of being regarded as slight additions to the discoverers’ own stock of information and not an increase of the world’s store of knowledge, their origin could hardly have been inspiriting to their author. One pauses to meditate upon the rea- sons for the long delay in the appreciation of the work of the Abbé Mendel in hybridization ot garden peas, and of that of Willard Gibbs on the “phase rule,” and to wonder whether even then men in positions of influence were convinced that they could “spot’’? in advance those’ things which were worth doing. It would be hazardous to assert that cases as striking as the foregoing are common. Less spectacular examples are, however, not rare. Although many of the economically valuable applications of science -to practical ends are directly made by investigators who are con- sciously striving to make those applications, it is probably in every ease true that their suc- cess has depended upon previous discoveries not made with a practical aim in view. Some one has gone so far as to say that every dis- covery of science which has proven of economic use was first made as a contribution to pure selence. Justification of research along lines that promise no amelioration of man’s condition must not, however, lie only in the possibility that the amelioration will result even without the promise. Some investigations must be ear- ried on purely for the training of investigators. Until, by use of tissue cultures or an analogous procedure discovered by the pure scientist and then applied by others, some means of indef- initely prolonging life is discovered, new inves- tigators must be developed to replace the old. New investigators are developed only by prac- SCIENCE [Vou. LV, No. 1428 tice, and in practice they must solve problems. For this educational work a problem of small value often serves as well as a weightier one. Indeed, since first attempts often show the hand of the novice, it may be doing a real service to science to withhold the more serious problem for a second or later investigation. It is not reasonable, therefore, and perhaps it is not wise to insist that even the training of research students shall all be done on subjects that are in themselves of high value either directly or indirectly. Objecting to our system of traininig in research by means of small investigations that are not in themselves im- portant is like proposing to abandon the study of arithmetic by means of problems on the ground that no one ever bought seven gallons of vinegar at twenty cents a quart, and that therefore it is a waste of time to discover how much the liquid cost. To convinee ourselves that the rearing of young investigators on a diet of insignificant problems is not inevitably fatal, and that it may even be beneficial, it is only necessary to look backward instead of forward, and gather assurance concerning the future from what has happened in the past. -Did Pasteur, for exam- ple, learn the art of investigation on a problem that he foresaw was to be a lasting boon and cause of untold happiness to men? This being a presidential address, I will probably exhibit no greater degree of ignorance than is to be expected if I inquire whether the solution of a puzzling problem relating to the isomeric tar- taric acids was by any one at that time held to be full of economic promise. Molecular strue- ture we may regard to-day as of high im- portance, perhaps in some instances even in a practical way, but hardly in Pasteuv’s early manhood. That his researches were considered by his contemporaries futile, even from the pure science viewpoint, is plain; for when Pasteur’s reputation had been established, when he was professor of chemistry, even when he was dean of his faculty, than which no higher honor presumably could come to a man of science, he was advised by Biot and Dumas, veteran chemists, not to waste more time on the subjects which were then uppermost in his mind. These investigations led, however, May 12, 1922] through the chemistry of fermentation to the bacteria of fermentation, and thence to the organisms of disease, and to-day the appre- ciation of the practical value of Pasteur’s work is universal. We may be told that Pasteur could have started midway in his career if some one had put him there at the outset by advice; and if we reply that there was no such person to ad- vise him, we may be reminded that there are plenty of advisers to-day. These advisers are precisely the foundation on which those who decry the uselessness of many present investi- gations propose to build a system in which only useful and important projects are under- taken. Granted an abundance of omniscient advisers, their plan should work; but if these foundation stones prove defective, the struc- ture resting on them will fall. How readily such advisers may be discovered and drafted into service is perhaps capable of computation. No doubt each person who proposes to elim- inate uselessness in research has in mind at least one who is able and willing to undertake the task of elimination. Otherwise the proposal would hardly be made. One need, therefore, only count the number of those who would dis- pense with impractical investigation to deter- mine the minimum number of advisers with which the system might start. Probably there are others having ability, but also modesty, who can not be immediately discovered. So far as I know no one has attempted to deter- mine how much leadership a federation to pre- vent uselessness in research might count upon. There is danger in this connection that the controlling factor of a career be misjudged. Careers are only occasionally guided by advice; for the rest, they are the product of evolution. Each step depends on what has gone before, and determines what shall come after. Granted the characteristics with which Pasteur’s parents endowed him, his life proceeded naturally from one thing to another. One need not be a fatalist to conceive that the only way for him to end with proof of the germ theory of dis- ease was to start with isomerism in tartaric acids. Had he been artificially set down at some mile-post on the way, without having traversed the preceding distances, it is ques- tionable whether he could have been made to SCIENCE 501 follow the same road, even with the help of advice from those who believed they were qual- ified to give it. Without the abiding faith that he was on the right road, which only his own previous work, not the suggestions of his elders, could give him, it is scarcely likely he would have persevered through the long periods of discouragement. To him who asserts that Pasteur could have been put upon the problem of pathogenic organisms in his early days and have reached the goal of his maturity at an earlier date, the only suitable reply seems to be the verse which might prove to have apos- tolie origin if the Scriptures recorded every- thing, “Verily, optimism hath its own reward.” Had Pasteur’s hypothetical early start on pathogenic organisms failed to lead him to the present conception of the etiology of disease, what would have been the damage? Would the world simply have lost Pasteur, and never been the wiser, in the same manner as it has probably lost many another genius, perhaps through mistaken advice coming from those who were supposed to know? Could humanity have counted on a substitute for Pasteur, aris- ing at an equally early date and arriving, either with or without advice from superiors, at the same conclusions as Pasteur reached? It is not likely. Failure to discover the truth by Pasteur would have been a calamity. His work would have been careful, painstaking. Everyone watching his later career would have recognized that his work on the theory of pathogenic organisms must have been thor- ough. But, owing to immaturity, or want of perseverance because he lacked the faith in his own hypotheses which only gradual develop- ment of them could insure, it had demonstrated nothing, its results were negative. Surely this would not have been an encouraging fact for any one else who conceived the germ theory of disease and contemplated efforts to prove its correctness. The oligarchy set up to guide re- search in useful directions would hardly have advised young men, or others, to enter that field. The fact that careful work by an able investigator, even if then young, had failed to find any proof of the bacterial origin of dis- ease, could easily have damned the truth to a generation or more of undiscovery. If any comfort is to be taken in the gloomy 502 picture of what would have happened if Pasteur had, at the behest of some supervising agency, undertaken as a first problem some- thing else than the isomerism of tartaric. acids, and thereby missed the germ theory of disease, it must lie in the belief that a man of Pasteur’s timber would have done great things in another field. But such a consideration does not answer the argument that his early work, prac- tical or not, was a necessary training in order that his maturer work might be valuable. Doubtless the case of Pasteur can be dupli- cated by that of other eminent scientists whose first research seemed to bear no relation to their later high attainments. Perhaps that is regularly true, except in the small number of cases in which by the laws of chance it is to be expected that preliminary work and eventual important discoveries shall lie in the same field. The fields in which the accomplishments of great investigators lie may thus appear to be matters of accident; but then, an accident is but the inevitable consequence of other acci- dents that have gone before. If it is not fatal, but sometimes even useful, to start the new investigator on his way with a problem whose solution promises no practical improvements in human affairs, what is to be said of those who are mature in research? Probably most of these trained workers would be better satisfied with their showing to their fellow men, even if not more content with themselves, if they could be perpetually en- gaged on practical projects. Even if it be granted, as has been done in the introductory remarks of this address for the sake of limiting the discussion, that practicatly useful investi- gations are the only ones desirable, is it pos- sible to maintain a system of research in which only practical things are attempted, and make it work? For various reasons the practical problem that suggests itself to an investigator may be one which he can not undertake. Lack of facilities readily accounts for many such eases, geographical position for others. The problem that seems most feasible may not seem highly important even from the pure science point of view. What is the investigator to do under these circumstances? Refrain from undertaking a problem which he feels sure is SCIENCE [Vou. LV, No. 1428 not of great value? Even if that means doing no research at all? Perhaps. But if he de- cides to keep on working, he may take comfort in the story of the foolish virgins, and reflect that in his small way he is keeping his lamp trimmed and burning even at the cost of some oil which seems wasted, until the bridegroom cometh with a problem that is more worth while. For nothing is so quickly fatal to re- search as interruption of it. This university furnished, for valuable war work, some inves- tigators whose previous work was regarded even by themselves as of small value. I am not speaking of any of you here present. The gentlemen to whom I refer are in their labora- tories to-night. They find the labors to which the great conflict introduced them so pleasur- able, nay, even enthralling, that they have no time to listen to mere presidential addresses. The life of any eminent scientist of the present generation would probably furnish a further example of the ad interim value of unimport- ant research. At least this is true of those in my own field upon whom I have taken the trouble to reflect. They have engaged in con- tinuous investigation, the continuity being due in part, in every case, to insignificant produc- tions. It is very seldom, and then only under unusual circumstances, that a serious interrup- tion is followed by a return to high produc- tivity. Nor must it be forgotten that many men who are engaged in research of minor value are the trainers of new investigators who may be more “lucky” than themselves. I think with profound respect of the professor of physics in a small western college who keeps working in a small way, who has never made a striking contribution, practical or otherwise, to his science, but who every year or two sends to a great eastern university a graduate student. Although these students are most of them still young men, they have done creditable things, some of them practical. Is it likely that the professor in the small college could thus inspire his students to a career of learning without the stimulus that comes from his own research? You may answer this question to your own liking, as I am doing. In a vicarious way, this man seems likely to exert upon his science an May 12, 1922] influence out of all proportion to the imme- diate significance of his own investigations. My challenge to the critics of the present system of research to produce anything better does not rest on the idealistic argument that truth for its own sake is the highest aim of the scholar. This argument might not appeal to those for whom this address is intended, who, while not present in this audience, may yet receive the challenge. It rests on the demon- strated fact that many discoveries thought un- important when made have proven to be valu- able later, on the belief that new investigators are often as successfully prepared by unim- portant practice problems as by more funda- mental ones and with sometimes less danger to the progress of science, and on the assumption that the continuity of labor which problems of small value permit is conducive to aggregate high productivity. This is the system under which we now operate, a system which leaves the individual free, and which does not chide him too severely if he sometimes engages in insignificant labor. It is a system which pro- vides for the doing of many services in order that some of them may prove valuable. Can it be improved upon? Quite possibly. Can it be improved upon by attempting to suppress all efforts that seem to have no significance? I think not. The principle of this method is one which has been widely adopted in other affairs of life and has been found good. Firing a whole cartridge full of shot in order that one ball may bring down the game is a recognized principle of the huntsman. Is the remaining shot wasted? It is. Is the system which uses cartridges of shot, most of which is wasted, an uneconomical one? Any hunter will tell you it is not. The bullets of a machine gun are mostly wasted, but the system as a whole insures hitting the mark. Drilling wells that never yield oil is wasteful; but the system of drilling numerous wells where there is a chance of striking reservoirs is a profitable one. Cast- ing bread upon the waters, to return again sevenfold in the form of flesh of fish, would be much more profitable if all the bread, instead of being cast at random, could be put into the mouths of those fishes that were afterwards going to be caught, and denied to those that SCIENCE 503 would later escape the net. But could such individual feeding be carried out? Not eco- nomically; not even at all. Casting bread upon the waters is the easiest and least wasteful way of obtaining a return. Hundreds of inventions are made for every one that fills an important place in human economy. Numerous excur- sions, genuine or spurious, were necessary before the north pole was discovered. Busi- ness concerns by the hundred are established and succeed or fail, but by only a few of them is economic progress made. Thousands of stu- dents must be gathered into colleges, so that a few scholars may be produced. Even presiden- tial addresses are subject to the same rule. In order that a few of distinction may be pro- duced, many that fall short of the goal must be written and heard. If presidential ad- dresses must be had, trial and error is the only way to secure quality. The factor of safety has been employed for ons in animals, which waste millions of eggs and spermatozoa to insure continuity of the species. Professor Jennings, in one of the brilliant presidential addresses to which refer- ence has been made, pictured himself as the accidental product of union of one among thousands of eggs and one among millions of sperms, and congratulated himself on being with us. We congratulate ourselves on having him with us. Along with Jennings, it is true, we have to accept a lot of inferior persons. We even have to take those who decry research be- cause much of it is useless. But these disad- vantages, these wasted combinations, are what insure such as Jennings. Only a small per- centage of seeds ever germinate, and fewer still ever mature. The entire struggle for ex- istence is based on the principle that security and advancement are -best secured through wasteful over-production. So in research. To find radium, we must permit scores of fruitless efforts in chemistry. To invent the wireless telephone, there must be numerous investigations that concern humanity little or not at all. To discover the mechanism of heredity, some one must be per- mitted to do much that has little or no bearing either upon that or upon anything else worth while. The great advances of the theory and 504 practical employment of electricity, of indus- trial chemistry, of immunity, of surgery, all have been made at the cost of much plodding and puttering. It is doubtful whether they could have been made in any other way. The foregoing defense of the present free- dom of the investigator is not to be regarded as a recommendation of still further freedom. It is not proposed that young investigators shall be delivered from all advisers. No muzzle is to be placed upon those who have comments to make upon the value of the work of their colleagues. Restrictions laid upon ad- vice and criticism are likely to be as dangerous as restrictions imposed upon problems for investigation. All that is insisted upon is that no such advice or criticism shall carry with it any weight that is not inherent in the advice or criticism itself. Those in whose hands lies the power to make or mar the career of investiga- tors should be exceedingly cautious how they ereate an atmosphere that seems in any way to discourage or limit the freedom of research. I have referred in my introductory remarks to several instances in which responsible offi- cials have, in my opinion, transgressed in this regard. They are not the only ones, and there are other ways of committing the same sin. One of these ways is the appointment of an investigator to a position for the purpose of studying a certain problem. There comes to my mind one such appointment in a research institution. The appointee was, in his own words, “brought down here to study 4 —but to name the specifie problem would be to name the institution. He did not feel free to attack another problem until that one was solved. It made no difference that he had come vaguely to feel that the problem would never be solved, or that other investigations would yield greater returns. By the terms of his appointment, his energy could be directed into other channels only with the permission of his superior officer. Such direction from above could be justified only in the case of an assistant or an investigator on temporary ap- pointment, not in the case of a permanent colleague. Research in a general field may legitimately be the aim of an institution in the appointment of an investigator, and the ap- SCIENCE [Vou. LV, No. 1428 pointee would naturally be one who had demon- strated an abiding interest in that field; but even in such cases, the progress of science de- mands that he be free from restraint. Very different from such interference is the friendly advice of a teacher or the criticism of a colleague. Advice and criticism carry no concealed weapons. They are sometimes good, and to repress them eliminates the good with the bad. Indeed, good advice is more easily frowned down than is the bad. If my argu- ment were regarded as against the giving of advice, and were taken seriously, those whose advice is best would be the most restrained by it. The greatest freedom of suggestion from all sources is advantageous, for advice is some- times good, and to get what is good one must also hear the worthless. That is the reason for this address—and this statement may be inter- preted in any way you choose. To sum up, a successful system of research, even when the practical is the ultimate aim, demands the greatest freedom of the investi- gator. While direction from superiors may effect gains in limited fields, the losses entailed in the whole system are probably invariably greater. Great industrial concerns maintain staffs of workers whose tasks are assigned to them, and such startling achievements as the wireless telephone have resulted from their directed energies; but the responsible heads of these enterprises recognize that untrammeled research in pure science must precede and build the foundation for their labors, and some of these industrial institutions are now deliberate- ly maintaining research workers in fields which promise at present no practical results what- ever. The freedom which is insisted upon for the investigator will, it is expected, often lead him to problems that have no practical value, or eyen no great scientific value. But a system in which such liberty is a cornerstone insures a continuous output and a wide range of re- sults. Among these results are most certain to be some, perhaps many, of practical value. Any interference with this system which would limit investigations to those of supposed im- portance would interrupt their continuity, limit the output, restrict the variety, and defeat its own purpose. The development of a scientific May 12, 1922] foundation is an evolutionary process. Man has never yet interfered very successfully with the great scheme of organic evolution, and there is no reason to suppose that he can pro- pose a superior substitute for the evolutionary process in the development of science. Selec- tionists have practically abandoned the belief that they can create new things at will, and are content now to discover, preserve, and combine what already exists or what may come into ex- istence without their aid. Practical scientists may well take their cue from the selectionists, permit investigation to take its own course, and choose from among its products such as seem capable of application. A. FRANKLIN SHULL UNIVERSITY OF MICHIGAN WHAT BECOMES OF THE FUR SEALS THe census of Alaska fur seals in 1921 as computed by Mr. Edward C. Johnston, of the U. 8. Bureau of Fisheries, amounted to a total of 581,457 animals, exclusive of 22,546 surplus males which were killed for commercial pur- poses. This is a low but substantial increase of 5.2 per cent. over the figures for 1920. The annual percentages of increase of the class of breeding cows since 1912 have been as follows: Since it is this class which is the controlling element of the herd it will be instructive to examine these figures with considerable care. In the first place, the great variation from year to year in the rate of increase is most notice- able; but it is no greater than that which is found to exist on the several rookeries, as an examination of the complete reports published by the Bureau of Fisheries will show. To some persons the above figures may ap- pear satisfactory. Every year since the cessa- tion of pelagic sealing in 1911 a gain has been SCIENCE 505 shown, whereas a loss was sustained from 1886 to that date. It was during this last period that uncontrolled slaughter of the females de- veloped and threatened the very existence of the species before it could be checked through diplomatic channels. Others will doubtless ask, “Why have the increases been so low?” A species of animal the female of which brings forth one young each year and approximately ten in a lifetime should increase annually more than 8.98 per cent. on the average. But that is all that an average of the above percentages will show. Several facts have been learned the past few years which throw some light on this important subject. For instance, it has been found in several successive years that only one half of the females which are born live to be three years old. The loss of the class on the islands before the pups learn to swim is about one per cent. It varies from three fourths of one per cent. to one and one half, depending entirely upon how many bulls more than necessary are present on the rookeries. The annual loss of females through actual killing on the islands does not exceed 75, or less than five hundredths of one per cent.; all such deaths are purely accidental and largely unavoidable in the con- duct of commercial work. Therefore, the loss can take place in but one other place and that is in the sea. The figure of 50 per cent. loss the first three years was obtained in the following manner: The loss of breeding females, due to old age, is about 10 per cent. each year because the average breed- ing age is about 10 years. If this 10 per cent. be deducted from the number of breeding females in any year, say 1915, the remainder will represent the breeders of that year which remained alive in 1916. If this be taken from the total number of breeders in 1916, the last remainder will represent the increment of new three-year-old cows that year because the first young are born the third year. In several seasons this increment has been only about 50 per cent. of the number of female pups born three years previously. In other words, the loss amounts to one fourth the total number of births in any one year. Out of the females born during the last nine years, therefore, the following losses have been suffered: 506 HMO Gaal seca eae cena eeencaes eee 314,8311 The great question is, “What has become of this enormous total of 300,000 female seals?” Some are killed by unlawful pelagic sealing. A few bullets and buckshot are found in the carcasses of males almost every year on the killing fields, although no seal can be shot legally. The number so killed, however, must be insignificant and the work sporadic in char- acter up to 1921. While it should not be ignored by any means, it is not sufficiently great to concern us in such a broad analysis of the subject as we are here making. Some other females are lawfully killed at sea by Indians under the provisions of the treaty of December 15, 1911. The number so taken in any one year is not excessive, a few hundred at most, yet it is sufficiently great that it should be stopped. The object of the treaty mentioned was to abolish pelagic sealing so as to protect the female seals. Therefore, per- mitting the work at all defeats the main pur- pose of the agreement and the objectionable clause should certainly be amended at the first opportunity. The Indians were given the privilege because they had hunted seals at sea from prehistoric times. There are many ways in which the natives can be recompensed with- out permitting them to destroy the important element of any species of wild life. There is no evidence of any loss of seals at sea due to disease or starvation. The animals are always fat and healthy when they leave their island home and also when they return. 1It should be explained that in fur seal census computations, while the figures appear exactly as though a precise enumeration had been made, only reund numbers are intended to be implied. The possible error in the above computations would be approximately plus or minus five per cent. SCIENCE [Vou. LV, No. 1428 Exceptions to this rule are so rare that they may be entirely ignored. There is only one other known method by means of which the herd suffers a loss in the sea. This is the result of the depredations of killer whales. Each spring and fall these “wolves of the sea” come about the Pribilof Islands in schools and have been seen to devour seals in large numbers. I once saw a school capture three seal pups in less than five min- utes. In their eagerness to capture their prey they sometimes “run aground” and of course then die. The stomachs of two which thus came ashore were once examined by Captain Bryant and in them he found 18 and 24 seals, respectively, $2,000 meals each of them. That the destruction of seal life about the islands by the killers is very great is incontro- vertible. Whether it continues as both animals migrate southward is unknown. We know with a fair degree of accuracy the direction and dis- tance traveled by the seals but the habits of the animals during the long period of their lives when they are in the water are practically unknown. There may be other pelagic enemies besides the killers, but it is doubtful; if so, they are entirely unknown. Of course, the males suffer as great a loss as the females and there is some evidence which indicates that it is even greater. As a class the former do not swim so far to the southward, and it is possible that the killers normally re- main in the colder waters. At any rate, we know that 300,000 of them have been lost during the past nine years. If they had been taken commercially and their skins sold for revenue they would have brought the enormous total of $15,000,000, upon the assumption of a value of $50 per skin. But during much of this period they brought $100 each or more. Such financial loss to the government can not be passed unheeded. That sum would have paid for all of the scientific investigations, good and bad, which have ever been made of the fur seal. Hach year the actual loss amounts to more than $1,000,000. It has been urged that a small part of this be used for the study of this new “fur seal ques- tion.” Seldom does a scientific investigation May 12, 1922] have such a chance to show immediate financial results as this. If the activity of the enemy could be reduced one per cent. it would increase revenue over $10,000 per year. It is therefore suggested that the activities of the killer whale be thoroughly investigated in its relation to the fur-seal herd. To do so, will require the services of a well-equipped vessel. It should be provided with a whale gun and a man to shoot it, because some of the animals would have to be killed. The stomachs of the killers taken should of course be examined. It may be asked why the preliminary work can not be done by the shore whaling stations, but it so happens that almost every cetacean known is commercially valuable except the killer. From the diminutive por- poise to the huge sulphurbottom all are taken but the orea, and it is left entirely alone. Therefore, the fur-seal question can not be studied on shore, where whales are utilized commercially without special arrangements being made for the capture of the killers. If the killer be found the great destroyer of fur seals which is suspected, then methods for its destruction should be devised. In lieu of submarines, it might be made the object of target practice of navy gunners. Or a bounty might be offered, so as to make them commer- cially profitable for whalers to handle. Or what is probably best of all such suggestions, fully equip whaling vessels to scour the seas, just as sheep men of the west keep coyote hunters constantly on duty. G. Datuas Hanna THE CALIFORNIA ACADEMY OF SCIENCES SCIENTIFIC EVENTS LOSS FROM ANIMAL DISEASES Tue Advisory Committee, appointed by the British Development Commission in 1920, has issued its report on the facilities now available for the scientific study of the diseases of ani- mals, and improvements recommended. Sir David Prain was chairman of the committee. According to an abstract in the London Times, the present value of cattle, sheep, and pigs in the United Kingdom is estimated, the report states, at between four and five million pounds. The Scottish Animal Diseases Re- SCIENCE 507 search Association estimates the annual loss from disease in Scotland at close on £1,000,000, and the committee thinks that the loss in England and Wales must be four times the loss in Seotland. The facilities for research at the five veterinary colleges in the United Kingdom and Ireland “constitute a national disgrace.” The sum allocated to veterinary research is “trifling in comparison with the sums set aside for medical, agricultural, and fishery research.” There are certain existing facilities at univer- sities, medical schools, the Brown Institution, and attached to the English and Irish Depart- ments of Agriculture and to the Royal Army Veterinary Corps. In South Africa there is a model organization for the study of animal diseases, £123,447 having been spent during the year 1920-21 on veterinary education and re- search. In India immense opportunities are almost wholly neglected. Leaving out of ac- count the work in South Africa, the state of research into animal diseases within the empire is at present lamentable. The committee advocates (with reservations by Sir Walter Fletcher) increased salaries to workers of proved capacity at Camden Town, and a capital grant for new laboratories there. It suggests that facilities for research should be placed at the disposal of the Royal Army Vet- erinary Corps, and that a sum should be set aside annually by the commissioners for spe- cial researches into animal diseases. With regard to the training of investigators, it anticipates that a large proportion will come from the veterinary profession. It is against the increase in the number of universities with veterinary faculties, but wishes more money to be given to the existing veterinary colleges. It proposes that the Development Commission should appoint a diseases of animals research committee, the majority of whom should be men of science. To this new body all applica- tions for grants from the development fund for research into the diseases of animals should be referred. THE CALIFORNIA STATE FISHERIES LABORATORY Tue State of California, through its Fish and Game Commission, has constructed a lab- oratory in East San Pedro, at Los Angeles 508 Harbor, for the study of the biology of the fishes utilized in the now very large sardine and tuna canning industries. The state govern- ment has found that such studies are an 1m- perative necessity in the exercise of its legal control over the fisheries. They are necessary, not merely for the determination of biological facts bearing directly upon methods of con- servation, but also for the interpretation of the statistics which are now collected by the state for the purpose of observing the condi- tion of the fisheries. The statistical system used is unique, and has proved its independence of the errors usually introduced by statistics gathered by personal: inquiry, but the perfec- tion of the data thus gathered does not elim- inate, but rather enlarges the importance of biological knowledge and hence of laboratory work. The building is of reinforced concrete, two stories in height, and of modified Spanish architecture with red tile roof. There are suf- ficient accommodations for from six to ten re- search workers in the three laboratories and work room. A large library room, a file room, a dark room and store room are also provided. It is hoped to collect a library upon fishery subjects which will be very complete, and to that end a number of the important periodicals in the field have been purchased in their en- tirety. However, aside from the publications of the International Council for the Investiga- tion of the Sea, there are not a great many such periodicals, and the real sparseness of our knowledge of the commercial fishes is empha- sized by their lack. The permanence of the laboratory is assured by the existence of a law specifying the collec- tion of the statisties and the biological inves- tigations necessary. It is felt that it will be very difficult for reactionary interests to repeal the law, or to attack the funds collected by special taxes for the maintenance of the work. Dependence upon appropriations made from year to year has proved disastrous in the case of the federal government and in those of a number of states, and it is to be hoped that such a system as is in existence in California will remain independent of appropriations. The biological problems which face the SCIENCE [ Vou. LV, No. 1428 fishery expert are wide in scope and will inev- itably interest the ecologist and the systematist. For their solution vast quantities of materials are available in the canneries and fish markets, while the detailed records of the catch which are gathered provide a basis for a real science of vital statistics of the fisheries. Men inter- ested along such lines will be cordially wel- comed in the new laboratory, in so far as its accommodations are adequate. WILL F. THOMPSON MATHEMATICAL PUBLICATIONS THE Bulletin of the American Mathematical Society contains several notes concerning math- ematical publications from which we quote. The council of the society has received an offer from an anonymous donor to pay the cost, up to $4,000, of an extra volume of the Transactions of the society, to be brought out promptly. This extra volume will be sent without charge to all subscribers and exchanges now. on the list. Mrs. Mary Hegeler Carus, as trustee for the Edward C. Hegeler Trust Fund, has given to the Mathematical Association of America the sum of $1,200 annually for five years for the purpose of publishing a series of monographs whose purpose should be to popularize mathe- matics by making accessible at nominal cost the best thoughts and keenest researches in this field set forth in expository form comprehensi- ble to teachers and students of mathematics and to other readers of mathematical intelligence. The deed of gift includes the promise to capi- talize this annual income by a permanent en- dowment fund if at the end of five years the project shall have proved successful. The members of the division of mathematics of Harvard University have constituted them- selves an informal committee to solicit contribu- tions to relieve the present financial need of the Jahrbuch iiber die Fortschritte der Mathe- matik. The deficit for the coming fiscal year will amount to about $1,000. The editor, Pro- fessor L. Lichtenstein, has appealed for aid. The Emergency Society for German and Aus- trian Science and Art, which last year appro- priated 20,500 marks for the Jahrbuch, con- templates the continuance of its support, sub- May 12, 1922] ject to the cooperation of American mathe- maticians. On the occasion of the sixtieth birthday of Professor David Hilbert, of the University of Goettingen, his friends, colleagues, and former students presented to him an address, an album of photographs, and a memorial volume of mathematical papers. Among those who joined in these remembrances were over sixty-five American friends and former students. The celebration was directed by a committee con- sisting of Professors O. Blumenthal (chair- man), R. Courant, G. Hamel, E. Hecke, A. Schonflies, and (for America) EK. R. Hedrick. The mathematical papers of. the memorial vol- ume will appear separately either in the Math- ematische Annalen or in the Zettschrift. The preparation of the complete edition of the works of Sophus Lie, undertaken in 1912 by Teubner, but suspended because of the greatly increased cost of printing, will be re- sumed with the financial support of the Nor- wegian Mathematical Society. The title of the edition will read: Sophus Lie, Gesammelte Abhandlungen, im Auftrage des Norwegischen Mathematischen Vereins und mit Unterstiitzung der Akademien zu Kristiania und Leipzig, herausgegeben von Friedrich Engel und Paul Heeguard. It is planned to publish seven vol- umes, of which volume three, the first to ap- pear, is now in press. Mathematische GRANTS FOR RESEARCH BY THE NATIONAL ACADEMY OF SCIENCES Tue following grants for researches have been approved by the National Academy of Sciences : Bache Fund H. Nort, Gouda, Holland, for counting the stars on the Franklin Adams charts..........6 200 H. S. Jennings, Johus Hopkins University, for studies of the cytology of the rhizo- POO Cum LIT Ol aisessnsen scene tseeanenceetcenseeenacncen Ee Herbert M. Evans, University of California, for the determination of the estrus cycle by means of histological changes in the vaginal and uterine fluid in other mam- mals than the rat (especially the rabbit AN Cga bh ey Cart, ee ecco cee skeen tecectans wesesnna seenaeee SCIENCE Carl G. Hartman, University of Texas, for the completion of observations on the estrus cycle of the opossum.........-.-.------------- Draper Fund E. A. Fath, Carleton College, for the pur- chase of a string electrometer for appli- cation to the photometry of the stars.......... W. W. Campbell, Lick Observatory, for the purchase of eclipse apparatus..........-..------.---- J. Lawrence Smith Fund George Perkins Merrill, U. 8S. National Mu- seum, in aid of further investigations of meteorites Gould Fund Benjamin Boss, Albany, N. Y., for the sup- port of the Astronomical Journal.......-.....-.- Marsh Fund Carl O. Dunbar, Yale University, for collee- tion and study of Permian insects.............. Miss Winifred Goldring, State Museum, Al- bany, N. Y., for investigation of Devonian Mlamtsmoti Gasper west tcrerec se tel eneatc as W. J. Sinclair, Princeton University, for continuation of his studies on the strati- graphic suecession of mammalian faunas of the White River oligocene Rudolf Ruedemann, State Museum, Albany, N. Y., for studies on the graptolites of North F. Canu and R. 8. Bassler, United States National Museum, for continuation of monographic studies on recent and fossil bryozoa CO. W. Gilmore, United States National Mu- seum, for continued work on a mono- graphic study of the fossil lizards of INonthapAti eric eeeeee eae et oe ee aeeeeeeaeloncerece VATS TT Cay seek Teeny a Nee ER Joseph Henry Fund Carl T. Compton, Palmer Physical Labora- tory, Princeton, N. J., for researches on the electric moments of molecules.............- H. J. Muller, University of Texas, for the purchase of a microscope designed espe- cially for selective illumination of given cells or portions of cells by means of vis- ible or ultra-violet light for use in studies in cytology, embryology and genetics.......- Ale& Hrdlitka, United States National Mu- seum, for support of investigations rela- ting to the origin and antiquity of man on the American and Asiatic continents........ 509 500 1,000 150 300 200 300 1,000 250 510 THE ELIAKIM HASTINGS MOORE FUND a On the occasion of the twenty-fifth anniver- sary meeting of the Chicago Section of the American Mathematical Society, held in Chi- cago on April 14 and 15, 1922, the following resolutions, with the names of 174 contributors, were presented to Professor E. H. Moore in a beautifully bound and illuminated manuscript: Conscious of the great influence which you have exercised upon the development of mathematical science throughout this country, particularly in the Middle West during the last twenty-five years, Admiring the outstanding qualities of your re- searches in various fields of mathematics, Grateful for the inspiration and the encour- agement which you have given to those who have come to the University of Chicago to study mathe- matics, Recognizing the large contribution which you have made to the creation and the growth of the Chicago Section of the American Mathematical Society, Deeply appreciative of the friendship which, during many years, you have shown toward those who have had the good fortune to know you, The undersigned members of the American Mathematical Society, formerly students of math- ematices at the University of Chicago, or members of long standing in the Chicago Section, have wished to use the opportunity afforded by the twenty-fifth anniversary meeting of the Chicago Section to present to you a testimonial, which is intended to link your name in the years to come with the development of mathematics in this country. To this end they have contributed to a fund which is to be offered for trusteeship to the American Mathematical Society upon the follow- ing conditions: 1. The fund is to be known as the Eliakim Hastings Moore Fund. 2. The interest on the fund is to be used at the discretion of the council of the society, and upon the recommendation of a committee appointed from time to time for this purpose, in furtherance of such mathematical interests as (a) The publication of important mathematical books and memoirs. (b) The award of prizes for important con- tributions to mathematics; it being further recommended that during the next ten years preference be given to the former, and that publication of Professor E. H. Moore’s SCIENCE [Vou. LV, No. 1428 researches in general analysis or other fields shall have precedence over all other claims. 3. The fund is to be kept intact by the Amer- ican Mathematical Society except in so far as it is used to aid in the publication of Professor Moore’s researches. For this special purpose a part of the principal, not exceeding one third, may be used provided the interest on the remain- der be allowed to accumulate until the fund has been restored to its original value. The trusteeship of the HEliakim Hastings Moore Fund was accepted by the council of the American Mathematical Society at its meet- ing on April 15. The society intends to keep the fund, which now amounts to nearly $2,000, open for further contributions so that it may become the nucleus for a much larger fund at the disposal of the American Mathematical Society for aid in the publication of important mathematical work. Contributions may be sent to the secretary of the ‘society, Professor R. G. D. Richardson, Brown University, Provi- dence, Rhode Island. ARNOLD DRESDEN SCIENTIFIC NOTES AND NEWS Av the recent meeting of the National Acad- emy of Sciences, Dr. Joseph S. Ames, pro- fessor of physies at the Johns Hopkins Uni- versity, and Mr. Gano Dunn, president of the J. G. White Engineering Corporation, were elected members of the council. Delegates from the academy were appointed as follows: To the seventh centenary of the University of Padua, May 14 to 17, 1922, H. D. Curtis and F. H. Seares; to the hundred and fiftieth anni- versary of the Académie Royale des Sciences de Belgique, May 24, R. A. Millikan; to the sessions of the International Research Council, Brussels, beginning July 18, George E. Hale and R. A. Millikan. From the fund collected by the women of America to present a gram of radium to Mme. Curie, there remains, after about $110,000 had been paid for the radium, a surplus of about $50,000, the annual income from which will be given to Mme. Curie. Str Bayitey Batrour, regius keeper of the Botanie Garden at Edinburgh and professor of botany in the university since 1888, has May 12, 1922] retired. He is succeeded by his assistant, Mr. W. W. Smith. Str Ronatp Ross has been elected a member of the Atheneum Club for “distinguished em- inence in science.” Sir Humpury Davy Rouueston was elected president of the Royal College of Physicians of London on April 10, sueceeding Sir Norman Moore. THE committee on scientific research of the American Medical Association has made the following grants: $250 to Professor Yandell Henderson, of Yale ‘University, for the pur- chase of apparatus to be used in investigation of some problems of the regulation of respira- tion; $225 to Dr. E. B. Krumbhaar, director of laboratories of the Philadelphia General Hos- pital, for studies on the etiology of inguinal granuloma conducted by Dr. James C. Small; an additional $400 to Dr. Herbert M. Evans, of the University of California, for the con- tinuance of his researches on the relations be- tween ovulation and the endocrine glands. In June, Professor Walter §. Haines, of Rush Medical College, will complete fifty years of teaching in the department of materia medica and therapeutics. A banquet of Rush alumni will be held at the Congress Hotel on May 17, during the session of the Illinois State Medical Association, at which it is planned to give recognition to this unusual record of service. AxsoutT three hundred men and women, in- eluding physicians, social workers and mem- bers of the nursing profession, attended a dinner on April 26, given to Dr. S. Josephine Baker, head of the bureau of child hygiene of the New York City Health Department. Dr. Baker has been appointed by State Health Commissioner Herman M. Biggs as consultant in child hygiene in connection with the organ- ization of a new division in the state depart- ment of health provided by the Davenport law. Dr. Joseph C. Swenarton has been ap- pointed assistant director of the bureau of bacteriology of the Baltimore City Health De- partment. SCIENCE 511 L. E. Rozerts, formerly assistant director of research of the American Writing Paper Com- pany, Holyoke, Mass., is now physical chemist at the Pacifie Coast Experiment Station of the Bureau of Mines at Berkeley, Calif. R. E. Hatt, formerly with the Geophysical Laboratory of the Carnegie Institution at Washington, has been appointed to take charge of the physical laboratory of the Pittsburgh station of the Bureau of Mines. PROFESSOR JOHN F'Razur, dean of the Towne Scientific School of the University of Penn- sylvania, has been appointed engineering ex- change professor to France next year. In this capacity he will represent seven American technical schools. Dr. Harry Ricumonp Snack, Jr., A.B. (Georgia, 708), M.D. (Johns Hopkins, ’12), associate professor of laryngology of the Johns Hopkins Medical School, has been appointed exchange professor to the Union Medical Col- lege, in Peking, China. Dr. Slack will be pro- fessor of otolaryngology and organize and pre- side over that department. He will sail from San Francisco about August 1 and be gone for a year. Dr. Mary E. Cotiert, of the University of Buffalo, will spend next year in Sweden as fellow in physiology of the American-Scan- dinavian Foundation. Proressor C. E. Frrresr, of Bryn Mawr Col- lege, has been appointed one of an interna- tional commission of four for the standardiza- tion of the work on field taking, to report at the Thirteenth International Congress of Ophthalmology to be held in London in 1925. Kurp H. Enprt1, professor of economic en- gineering at the Technical High School of Berlin, recently made an inspection of many of the open pits and underground properties on the Mesabi iron range in Minnesota and the iron-ore loading docks at Duluth and Superior. At the recent national convention of Sigma Gamma Epsilon at Pittsburgh, Pennsylvania, the new grand council was constituted by the election of Dean H. B. Meller, University of 512 Pittsburgh, President; Harry Crum, Lawrence, Kansas, vice-president; Dr. C. E. Decker, Uni- versity of Oklahoma, secretary-treasurer; HE. F. Schramm, University of Nebraska, historian, and Dr. W. A. Tarr, University of Missouri, editor. Proressor A. GuRwitscH, formerly pro- fessor of anatomy and histology in Petrograd, is now on the faculty of the newly founded university at Simferopol, Crimea, Russia. As the university library is without recent scien- tific publications, he would welcome the receipt of reprints, books or periodicals from his col- leagues in the United States. Dr. VERNON KELLOGG, permanent secretary of the National Research Council, gave an ad- dress before the Graduates Club of Ohio State University on May 2, and the annual Phi Beta Kappa address at Oberlin College on May 4. He will give the annual Phi Beta Kappa ad- dress at the University of Virginia on June 12. On Aprit 26, Dr. Frederick Bedell, of Cor- nell University, spoke before the staff of the California Institute of Technology and the Mount Wilson Laboratory on “Some alter- nating current phenomena.” Dr. FreperIcK V. Covitite on April 26 de- livered a lecture on “The influence of cold in stimulating the growth of plants” before the Kansas chapter of the honor society of agricul- ture, Gamma Sigma Delta, at the Kansas State Agricultural College. Dr. Brayton H. Ransom, of the division of zoology of the Bureau of Animal Industry, United States Department of Agriculture, gave a De Lamar lecture on April 24, at the School of Hygiene and Public Health of the Johns Hopkins University, entitled “The hygienic importance of recent discoveries in ascariasis.” Dr. E. P. Lyon, dean of the College of Medi- cine of the University of Minnesota, delivered the annual Alpha Omega Alpha address before the Alpha Chapter of the University of Ne- braska College of Medicine on April 21, on the subject “Humidity as a_ physiological factor.” Proressor E. B. TrrcHener, Sage professor of psychology, Cornell University, delivered a SCIENCE [Vou. LV, No. 1428 lecture on “The structure of the physiological psychology” on April 8 before an open meet- ing of the William James Club of Wesleyan University. At the recent meeting of the Michigan Acad- emy of Sciences, Dr. J. McKeen Cattell gave the evening lecture under the auspices of the University of Michigan, his subject being “The uses of psychology.” THE Morison lectures before the Royal Col- lege of Physicians of Edinburgh were delivered by Professor G. Elliot Smith, on May 1, 3 and 5, the subject being “The evolution of the human intellect.” Grorce R. Davis, engineer in charge of the Pacific division of the U. 8. Geological Survey, died recently in San Francisco. ApotpH B. AMEND, for more than twenty years with the house of Himer & Amend, New York City, died at his home in Brooklyn on April 19. Dr. ANDREW McWILLIAM, consulting metal- lurgist and formerly professor of metallurgy in Sheffield University, died at Sheffield on April 5. THe death is announced of Dr. Francis Darby Boyd, Monerieff-Arnott professor of clinical medicine in the University of Edin- burgh, at the age of 55 years. A MONUMENT to the memory of the late Pro- fessor George Trumbull Ladd, professor of moral philosophy and metaphysics at Yale University from 1881 to 1906, whose death oc- curred in New Haven on August 8, 1921, was unveiled in the grounds of a Buddhist temple near Tokyo, Japan, on March 11, in the pres- ence of Mrs. Ladd, Mr. Charles Beecher Warren, American ambassador to Japan, and Japanese friends of Professor Ladd. Speeches were made by the American ambassador and a number of Japanese officials, and Mrs. Ladd gave a brief response. The monument consists of a slab of gray, voleanie rock. It stands on the top of the hill of the bell tower in the grounds of Soji-ji, the great Buddhist temple at Tsurumi. Beneath the slab are a part of the ashes of the psychologist and philosopher, brought to Japan at his request. May 12, 1922] Tur Ramsay Memorial trustees will at the end of June consider applications for two Ramsay Memorial fellowships for chemical re- search. One of the fellowships will be limited to candidates educated in Glasgow. The value of the fellowships will be £250 per annum, to which may be added a grant for expenses not exceeding £50 per annum. Full particulars as to the conditions of the award are obtainable from Dr. Walter W. Seton, secretary, Ramsay Memorial Fellowships Trust, University Col- lege, London. ; Tue Liverpool School of Tropical Medicine has awarded the Mary Kingsley medal to the Oswaldo Cruz Institute of Rio de Janeiro in appreciation of the scientific work of the late Dr. Oswaldo Cruz. Dr. Carlos Chagas is the director of the institute now, and the letter ac- companying the medal states that the Liverpool school had decided to award this medal ‘For Devotion to Science’ to Dr. Cruz, but was wait- ing for the close of the war before making any awards. The letter continues: “In the mean- time Dr. Cruz had died, and the school now confers the medal on the Oswaldo Cruz Insti- tute as a tribute to the memory of one of the greatest sons of Brazil. As the institute found- ed by him is destined to be the leading one of the institutions for medical research in tropical America, it is only just that it should receive this token of appreciation.” W. A. Cruss, secretary of the Petroleum Section of the American Chemical Society, an- nounces that members of the special committee for promotion of research on petroleum in cooperation with Dr. Van H. Manning, direc- tor of research for the American Petroleum Institute, are as follows: W. F. Faragher, chairman, Mellon Institute, Pittsburgh, Pa.; R. E. Wilson, Massachusetts Institute of Tech- nology, Cambridge, Mass.; R. P. Anderson, United Natural Gas Company, Oil City, Pa.; N. A. C. Smith, Bureau of Mines, Pittsburgh, Pa.; C. E. Waters, Bureau of Standards, Washington, D. C.; R. R. Matthews, Roxana Petroleum Company, Wood River, Ill.; E. W. Dean, Standard Oil Company, 26 Broadway, New York, N. Y. At the recent meeting of the American Chemieal Society in Birmingham, SCIENCE 513 # the Petroleum Section authorized the appoint- ment of such a committee. . Tue Biological Research Institute (Bio- logische Versuchsanstalt) of the Vienna Acad- emy of Sciences, affords exceptional oppor- tunities for students to pursue investigations in experimental biology on both animals and plants. Research tables may be occupied by properly qualified persons at a monthly rental of $20. Inquiries should be addressed to the director, Professor Hans Przibram, II. Prater, Vivarium, Vienna, Austria. UNIVERSITY AND EDUCATIONAL NOTES Mr. E. W. Scripes has established a founda- tion at Miami University for the study of pop- ulation in its various aspects, particularly the population of the United States. Dr. Warren S. Thompson, professor of rural sociology at Cornell University, has accepted the appoint- ment as director of the foundation. Dr. SypNEY WALKER, JR., has provided for a scholarship in the department of physiology of the University of Chicago, to be known as the Sydney Walker III scholarship in physi- ology, in memory of Dr. Walker’s son. It is to be used for the furtherance of research in physiology and provides $200 a year. THE inauguration of Dr. Clarence C. Little, formerly of the Cold Spring Harbor Biological Laboratory, as president of the University of Maine, will take place on May 10. Proressor D. Wrigut Witson, Ph.D., pro- fessor of physiological chemistry, Johns Hop- kins Medical School, Baltimore, has been ap- pointed to fill a similar position at the Univer- sity of Pennsylvania, to sueceed Dr. Alonzo K. Taylor. Dr. ALBERT SCHNEIDER has resigned from the University of Nebraska. He will teach in the summer session of the University of California, and will then go to Portland, where he has accepted a position in North Pacific College and where he will continue his cancer research. 514 DISCUSSION AND CORRESPOND- ENCE DID HUMPHRY DAVY MELT ICE BY RUBBING TWO PIECES TOGETHER UNDER THE RECEIVER OF AN AIR PUMP ? Ir is commonly stated that Humphry Davy melted two pieces of ice by rubbing them to- gether under the exhausted receiver of an air pump, and thus showed conclusively that heat is not a material substance. In books which I happen to have at hand I find twelve different authors stating that Davy melted two pieces of ice by rubbing them together in a vacuum, and four of them stating in addition that the two pieces of ice were rubbed together by clockwork. In looking to see what Davy him- self said about this experiment I have, to my surprise, failed to find any evidence that he ever performed just this experiment. Of the authors whom I consulted, four give references. Two refer to the Collected Works of Sir Humphry Davy, vol. 2, p. 11. The other two refer to Davy’s Elements of Chem- ical Philosophy. In the Elements of Chem- ical Philosophy, reprinted as Volume 4 of the Collected Works, I have not found any state- ment about the melting of ice by friction. In the first paper in Volume 2 of the Collected Works Davy describes twenty-two experiments and makes comments on them. 5 In Experiment 2, p. 11, he deseribes an ex- periment in which “by a peculiar mechanism” he caused two blocks of ice to rub together. “They were almost entirely converted into water.” In the description of this experiment nothing is said about any air pump. The description of the third experiment is not entirely clear. Davy says, “I procured a piece of clock-work so constructed as to be set to work in the exhausted receiver; one of the external wheels of this machine came in contact with a thin metallic plate. A con- siderable degree of sensible heat was produced by friction between the wheel and plate when the machine worked uninsulated from bodies capable of communicating heat. I next pro- SCIENCE [Vou. LV, No. 1428 cured a small piece of ice; round the superior edge of this a small canal was made and filled with water. The machine was placed on the ice, but not in contact with the water. Thus disposed, the whole was placed under the re- ceiver. The receiver was now ex- hausted. The machine was now set to work. The wax rapidly melting, proved the increase of temperature.” From this description it seems that the clock- work was not a mechanism for rubbing two pieces of ice together, but was used to pro- duce friction between two metals, and that the heat developed by this friction caused the melting of some wax. Any clockwork which Davy might have placed inside of the receiver would probably not have been sufficiently powerful to melt ice rapidly by rubbing it on ice. J have wondered if some author did not read tthe sec- ond experiment, glance at the third, and see- ing the words clockwork, exhausted receiver, ice conclude that two blocks of ice were rubbed together by clockwork under the exhausted re- ceiver. If so, this is an interesting illustra- tion of the ease with which a misstatement may pass from one author to another. If there is evidence that Davy did melt two blocks of ice by causing clockwork to rub them together under the receiver of an air pump I hope some one will adduce it. ARTHUR TABER JONES SMITH COLLEGE, FEBRUARY 23, 1922 A PARACELSUS LIBRARY IN THIS COUNTRY In your issue of February 10, F. N. Gar- vison announces a new prospective publication _in Germany of the complete works of Para- celsus, that great pioneer in analytical chem- istry and medical reformer of the sixteenth century. It may not be generally known that what is no doubt the largest and most complete collection of the works of Paracelsus in this country is the one made during the last century by the late Dr. Constantine Hering of Phila- delphia, and since his death in 1880 was ac- May 12, 1922] quired by the Hahnemann Medical College of Philadelphia, where it is now deposited. He spared no effort or expense to make it as com- plete as possible. Cart Hering THE TEACHING OF EVOLUTION IN THE BAPTIST INSTITUTIONS OF TEXAS THE teaching of evolution in the Baptist denominational schools in Texas is being in- vestigated as heretical. The denomination is strong in membership and maintains about 15 colleges and seminaries in the state, the chief ct which is Baylor University at Waco. It appears that the trouble arose as the result of the publication in 1920, by the Baylor Univer- sity Press itself, of an ‘Introduction to the Principles of Sociology,” by Grove Samuel Dow, Professor of Sociology in Baylor Univer- sity. The book is based upon the theory of evolution wherever it touches upon the bio- logical aspects of sociology, although the term biological evolution is scarcely or not at all used in the text. At a recent conference of representatives of the Baptists of all parts of the state, such teachings were pronounced heresy, and a sweeping investigation is being made of all of the Baptist schools of the state to determine how much “heresy” is being taught. Professor Dow has resigned his posi- tion. A somewhat related situation has existed at Southern Methodist University, Dallas, where the teaching of Dr. John A. Rice, Professor of Old Testament Interpretation, has created the severe opposition of a large part of his church. Dr. Rice’s book, “The Old Testament in the Life of Today,” looks upon the Old Testament as a series of independent historical papers, each subject to its own interpretation. Many are considered as having been revised by sev- eral authors before they have reached their present form. Each is regarded as a literary production, subject to all of the rules of liter- ary interpretation; this introduces a personal factor into any understanding of the Old Testament, and completely does away with literal interpretations. Dr. Rice has also left SCIENCE 515 his position, to become pastor of a Methodist church in another state. 8. A. R. THE METRIC CAMPAIGN Mr. Hatusry’s recent letter in Sctence is of interest in view of the hearings that have been held during the past few months on the Britten- Ladd Bill. It was made clear in these hearings that wire, for instance, is readily defined as a 2 millimeter wire (2 mm in diameter) or, by a less convenient method, as a wire 0.079 inch in diameter. An inferior method is to refer to such a wire as a No. 46 Stubs’ wire (2.01 mm or 0.079 inch) or a No. 14 Birmingham (Stubs’) wire (2.11 mm or 0.083 inch). There are at least three other gages that have been used to a greater or less extent. It was shown in the metric hearings that if this convenient metric method continued to prevail, certain gage manufacturers would lose the advertising value connected with the use of their gages. It furthermore developed that it was a gage manufacturer who had organized what opposi- tion he could in order to fight the metrie sys- tem, had contributed $1,000 from his firm and had brought about the employment of Mr. Halsey in his metric fight. Mr. Halsey had profited by his anti-metriec efforts in the past. His own words in this controversy were “We have killed the metric system before and we will kill it again.” We have no objection to Mr. Halsey’s attempted slaughter of the metric system. Readers of Sctencr, however, may be unaccustomed to his method of argument. In his recent letter, for instance, he endeavors to make it appear that Professor E. C. Bingham of Lafayette College is “naive” and ignorant regarding weights and measures, and that there- fore he should not be encouraged in the suc- cessful campaign to secure the use of metrie weights and measures throughout the industry in which he is an expert. Professor Bingham’s many friends and acquaintances do not need to be told that he is unusually well informed and proficient in his work. Mr. Halsey’s use of the title “Commissioner” is also of interest. This has led a few people to believe for a time that Mr. Halsey in some 516 way represented a federal, state or municipal organization. Mr. Halsey refers to a report issued in October, 1921, as confirmation of all his con- tentions. It is amusing to find that this report was drawn up under the guidance of a com- mittee of five men: the gage manufacturer re- ferred to above, two others associated with him in his fight to kill the metric system, and an impotent minority of two good metric advo- cates. However, the use of metric weights and measures, legal for all transactions in the United States since July 28, 1866, is above personalities. As a nation we find ourselves to-day endeavoring to bring about mutual understanding and world-wide trade. At least 46 countries have officially adopted the metric system for general use. Partly through the ex- cellent work of the Decimal Association of London, England has already left America be- hind in the use of metric weights and measures. The hearings are over on the Britten-Ladd Bill. The campaign to put this bill, or a modi- fied form of it, through Congress is before our association. At the same time we are co- operating with the Toronto and other sections of the American Metric Association, and an ever increasing number of men and women in North America are using metric weights and measures. We ask for the cooperation of all in the United States and Canada. Howarp RICHARDS, Secretary, American Metric Association Aprit 25, 1922 SCIENTIFIC BOOKS 'THE BIOLOGICAL RESEARCHES OF GUSTAF RETZIUS VoLumE XIX, Neue Folge, of the Biologische Untersuchungen of Gustaf Retzius completes the scientific works of the great anatomist and anthropologist who died in the summer of 1919. This posthumous volume has been edited and compiled at the request of Madame Retzius by Professor Carl Furst, of the University of Lund. Professor Furst is the oldest living SCIENCE [Vou. LV, No. 1428 friend and colleague of Retzius, and was well equipped, both by virtue of long acquaintance and collaboration with the author, and by familiarity with his work, to edit for publica- tion the series of technical papers which ccm- prise the volume. These papers are seven in number, and are accompanied by twenty-one beautiful plates of folio size. The first contribution, under the title, “Weitere Beitrage zur Kenntnis von dem Bau und der Anordnung des Ependyms und der simtlichen Neuroglia, besonders bei den niede- ren Vertebraten” (Taf. I-X VI), describes the neuroglia and ependyma of various vertebrates in four sections, viz.: A. Amphioxus; B. Myxine; C. Petromyzon; and D. Selachians, Teleosts, Amphibia, Birds and Mammals. The text of section D has been inserted by the editor from a translation into German of an article originally published elsewhere by Retzius in Swedish. The editor states: “Wir bekommen dadurech von Retzius selbst eine Erklirung einiger wichtiger, hier mitgeteilten Figuren. Gustaf Retzius hat mehrmals friihere Arbeiten, die in schwedischer Sprache herausgegeben waren, spiter in Biol. Unter. in deutscher Ubersetzung aufgenommen. Wenn ich diese Abhandlung aus der Miillerschen Festschrift einsetze lasse ich doch grossteils die historische Hinleitung der Abhandlung aus. Der Inhalt dieses Historik ist n&émlich in den hier oben mitgeteilten Abhandlung ausfiihrlichen mit- geteilt.” The second paper, “Hinige Beitrige zur Kenntnis der Structur der Ependym— und Nervenzellen im Riickenmark der Cyclostomen” (Taf. XVII, Fig. 1-24), deseribes a type of cell among the ependyma cells of the spinal cord of cyclostomes which has been ealled “inneren Sinneszellen’”’ by several investigators, but which Retzius concludes are modified ependyma cells. The second part of this article considers the fibrillar structure of nerve cells of the spinal cord in this lowly group of verte- brates. Nine of the folio pages and one plate (Taf. XVIII) describe certain phases of the struc- ture of the lens of the eye, under the title “Zur Kenntnis des Baus des Glaskorpers im Auge des Menschen.” May 12, 1922] In the fourth and fifth articles (Taf. XIX- XXI) the author continues his already exten- sive studies on the spermatozoa of various animal groups, under the titles “Die Spermien der Cyclostomen” and “Noch einige Beitrage zur Kenntnis der Spermien bei den Affen,” respectively. “Die Gehirne der Affengattungen Cebus und Ateles” is without figures. It consists of some notes which supplement the author’s earlier work, “Das Affenhirn in bildricher Darstel- lung,” in which figures. of these brains are found. The final contribution “Die Verbindungen zwischen dem Sarcolemma und den Grund- membranen der Muskelfibrillen in bildricher Darstellung” (Taf. XVII, Fig. 25-27) is made up of three figures which represent the striated muscle of salamander larve, showing the finer structure of the muscle fibers and the relation of the ground membrane to the myofibrille and to the sarcolemma. Apparently a paper on this subject was contemplated by Retzius, but the text was not written. The editor refrains from supplying it, stating “Die Bilder demon- strieren selbst so gut diese Verhiiltnisse dass eine eingehende Erklirung nicht notig ist. Prinzipiell will ich hier nicht versuchen, Worte, die Retzius nicht selbst niedergeschrieben hat, ihm in den Mund zu legen.” This statement admirably summarizes the attitude of the editor toward the contents of the entire volume. The volume closes with an excellent table of contents of the two series of the Biologische Untersuchungen, namely, the two volumes which appeared in 1881 and 1882, and the nineteen volumes of the Neue Folge. Follow- ing this is a bibliography of the scientific works of Retzius, arranged by subjects. This bibliog- raphy consists of 333 titles. Tt is fitting that the dedicatory page which in the preceding volumes has borne the names of so many distinguished anatomists should bear in the last volume the inscription by the widow of the author: Dem Andenken meines verewigten Gemahls GUSTAF RETZIUS in Liebe und Dankbarkeit gewidmet. Anna Hierta-Retzius. SCIENCE 517 To the sympathetic cooperation of his wife is due in no small measure, together with his own untiring zeal, the unique monument which Retzius has left in the nineteen folio volumes of the Biologisehe Untersuchungen, and the numerous other papers and monographs which bear his name. O. LarseLu UNIVERSITY OF OREGON MepicaL ScHOOL SPECIAL ARTICLES POLYPLOIDY, POLYSPORY, AND HYBRIDISM IN THE ANGIOSPERMS For some time investigations have been car- ried on in these laboratories on the subject of polyploidy in relation to polyspory and hy- bridism. The material used consists of both Dicotyledons and Monocotyledons, and repre- sents either known hybrids or species belonging to genera or groups in which a great deal of natural hybridism is suspected. The conclusion has been reached that polyploidy is a common result of incompatible species crosses. The normal gametophytic number of chromosomes becomes multiplied by three, four, ete. as a consequence of such inharmonious crosses, in various degrees of complexity. A frequent, although not invariable accompanying feature of polyploidy is the phenomenon of polyspory. As is well known, the normal divisions tak- ing place in the spore-mother cells of the Angio- sperms, lead to the formation of four spores. Some of the members of the normal tetrad of spores may exceptionally abort, as for example, in the microspores of certain sedges. This condition of abortion is the normal one in the formation of megaspores. In the case of poly- spory the first division of the spore-mother cell leads to the formation of more than the two normal daughter nuclei. Two larger nu- clei are generally formed by the union of cer- tain of the chromosomes which undergo sepa- ration into daughter groups at a moment pre- ceding that in which the remaining chromo- somes pass into the metakinetic phase. The later dividing chromosomes, in separating tardily into daughter groups are ordinarily 518 fewer in number than are those concerned in the formation of the two main daughter nuclei. The nuclear bodies formed by their fusion lie ultimately lateral to the spindle instead of ter- minal as in the case of the larger nuclei, and are of strikingly small size. There may be as many as four of the small nuclei at the end of the first division of the pollen mother-cells. When the second division takes place a further formation of normal large nuclei (aggregating four in number), and of abnormal small nuclei more numerous than are the large nuclei re- sults. The large nuclei give rise usually to normal pollen grains but some or all of the grains resulting from them may abort. The small nuclei derived from the late-dividing and small groups of chromosomes give rise appar- ently always to abortive grains. A number of publications from this laboratory? have em- phasized the importance of pollen sterility as a reliable morphological criterion of previous heterozygosis or genetical impurity. Special attention has been devoted to abort- ive pollen as evidence of hybridism in the case of the Onagracee and Rosacee, but it is like- wise found in many other groups. It is in- teresting to note that Tackholm in Sweden? and Blackburn and Harrison* in England, have 1 Jeffrey, E. C., Spore Conditions in Hybrids and the Mutation Hypothesis of De Vries, Bot. Gaz., Vol. 53, No. 4, October, 1914; Some Funda- mental Morphological Objections to the Mutation Theory of De Vries, American Naturalist, 1915. Standish, L. M., What is Happening to the Hawthorns? Journal of Heredity, Vol. 7, No. 6, June, 1916. Hoar, C. S., Sterility as the Result of Hybrid- ization and the Condition of Pollen in Rubus, Bot. Gaz., Vol. 62, No. 5, November, 1916. Forsaith, C. C., Pollen Sterility in Relation. to the Geographical Distribution of Some Onagracee, Bot. Gaz., Vol. 52, No. 6, December, 1916. Cole, R. D., Imperfections of Pollen and Muta- bility in the Genus Rosa, Bot. Gaz., Vol. 63, No. 2, February, 1917. Jeffrey, E. C., Evolution by Brooklyn Botanic Garden Memoirs, 1: June 6, 1918. 2Tackholm, Gunnar, On the Cytology of the Genus Rosa. A Preliminary Note, Sartryck ur Svensk Botanisk Tidskrift, Bd. 14, 2-3, 1920. Hybridization, 298-305, SCIENCE [Vou. LV, No. 1428 recently pointed out the coincidence of hybrid- ism and polyspory in the genus Rosa. Our investigations have made this condition clear for a considerable range of Dicotyledons and Monocotyledons. Tackholm has asserted on the basis of his extensive studies that all the roses belonging to the Canina section of the genus Rosa, in other words, the roses of Europe, of western Asia, and of northern Africa, are throughout hybrids probably thousands of years old and reproducing by apparently nor- mal seeds, which are nevertheless formed “apomictically” and without the intervention of a sexual act. Obviously such seeds will “eome true’ as universally as do grafts or vegetative multiplications of any kind and for the same reason because they represent only subdivisions of the vegetative body. Polyspory appears as a consequence of our investigations, which will be published in full at a later stage, as a frequent although not invariable result of hybridization of species (that is, of species crosses), and constitutes one more valuable structural or morphological criterion of heterozygosis. It frequently ac- companies polyploidy and the manifestations of the so-called “lethal factor” in marked re- productive sterility in either known or sus- pected hybrids between species of the higher plants. We have now the following morphological criteria of genetical impurity or heterozygosis in plants, namely, reproductive sterility (most easily observed in the case of the microspores or pollen), gigantism, variability (mutability), polyploidy and polyspory. Not all of these may occur in any given ease, but the coin- cidence of any considerable number of these features should be regarded as supplying strong evidence of previous crossing of more or less incompatible species or varieties. E. C, JEFFREY A. E. LonGLEY C. W. T. PENLAND LABORATORIES OF PLANT MORPHOLOGY, HARVARD UNIVERSITY 3 Blackburn, K. B., and Harrison, J. W. H., The Status of the British Rose Forms as deter- mined by their Cytological Behaviour, An. Bot., Vol. 35, No. 138, April, 1921. May 12, 1922] THE REACTION OF DROSOPHILA TO ULTRAVIOLET AurHouGH there is no unanimity of opinion as to the ability of insects to distinguish colors in the sense that humans do, it is fairly well established that the tendency is for them to react most strongly to wave-lengths in the violet end of our visible spectrum. This sug- gests the possibility that insects may be sensi- tive to ultraviolet, to which the human eye is relatively insensitive except indirectly by fluorescence in the cornea. The possibility is of interest in connection with the general prob- lem of the biological relations between flowers and insects, for flowers may be “ultraviolet” as well as red, yellow, and so on. A committee of the National Research Council is planning to do field-work on this problem during the coming summer and it was thought that the following experiments might give useful preliminary information. They were made with the as- sistance of Mr. Ware Cattell. Drosophila melanogaster exhibits a strong tendency to move toward the source of light. A large number of these flies were placed in a test tube about 30 em. long and 2 em. diam- eter, the end being closed with a plug of cotton. A strip of black paper was rolled around the tube to protect from stray light. By shpping the paper down from the end of the tube the flies could be “concentrated” next to the cotton plug. The paper was then replaced and the tube placed horizontal with its rounded end toward the spark from a 200 watt General Electric ultraviolet generator. Between the generator and the tube were placed four thick- nesses, totaling about 1 em., of Corning ultra- violet glass, number G586A (old number G55A62). After an exposure of 15 seconds the flies were found to have congregated in the end of the tube next to the source, showing that they were strongly attracted by the ultra- violet generated by the spark and transmitted by the special glass. The transmission of this glass has been measured by the Bureau of Standards (Tech- nological paper Number 148: “The Ultraviolet and Visible Transmission of Various Colored Glasses”). A thickness of one centimeter transmits about 70 per cent. of light in the SCIENCE 519 neighborhood of 0.36; about 25 per cent. near .34; but only 5 per cent. at 0.40. This glass transmits also a small amount of red. The flies, however, did not react when we used a red glass which transmitted far more red than Gd86A. To make a more accurate test, a quartz spec- trograph was used to disperse the light from the ultraviolet generator. Light of wave-length greater than .39 was excluded by a strip of black paper in the focal plane. As before, the flies showed a very marked reaction when the horizontal test was “pointed” toward the ultra- violet source. This last result was, however, rendered some- what doubtful by the fact that the quartz lenses and the dispersing system scattered a small amount of blue and violet light. This seattered light was entirely eliminated, at least so far as human vision is concerned, by inter- posing a single thickness, 2.5 millimeters, of G586A in the path of the light. But even then the flies showed a marked reaction. The con- clusion is that Drosophila melanogaster 1s more sensitive to ultraviolet light than is the human eye. The question may still be raised that these phototropie reactions of Drosophila are due to fluorescence of eye media, similar to that expe- rienced by the human eye when exposed to ultraviolet light. All that can be said at present in this connection is that the intensity was so low that we did not experience the visual sensation characteristic of such fluorescence, but the flies reacted promptly and definitely. F. E. Lurz, AMERICAN MusEeuM or Natura History F. K. Ricurmyer, CoRNELL UNIVERSITY THE AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE SECTION A—MATHEMATICS AND ASSO- CIATED SOCIETIES Section A of the American Association for the Advancement of Science met in Room 8 of the Main Building of the University of Toronto on Thursday afternoon, December 29, 1921, in joint session with the American Mathematical Society and the Mathematical 520 Association of America. Professor Oswald Veblen, chairman of the section, presided. The program comprised the following ad- dresses : 1. A mechanical analogy in the theory of equa- tions, by Professor D. R. Curtiss, retiring vice-president of Section A. : 2. The research information service of the Na- tional Research Council, by Professor R. M. Yerkes, of the National Research Council. . Subsidy funds for mathematical projects, by Professor H. E. Slaught. 4. Algebraic guides to transcendental problems, by Professor R. D. Carmichael, retiring chairman of the Chicago Section of the American Mathematical Society and vice- president of the Mathematical Association of America. In the absence of Professor Carmichael, an abstract of his paper was read by Professor Arnold Dresden. oo At a meeting of the sectional committee pre- ceding this program, the following nomination was made for chairman of the section, to pre- side as vice-president for Section A at Boston and to give his retiring address at Cincinnati: Professor G. A. Miller, of the University of Illinois. At a business meeting of the section following the program this nomination was ap- proved, and Professor Miller was elected at a meeting of the council of the association, held on December 30. A joint dinner for mathematicians and physicists was given at Burwash Hall on Fri- day evening, December 30. Wu. H. Rorver, Secretary SECTION B—PHYSICS—AND ASSOCIATED SOCIETIES! Section B of the American Association held its session on Thursday morning, December 29, 1921, in conjunction with Section C of the American Association, the American Physical Society, the American Meteorological Society, and the Section of the Physical Science Com- mittee of the National Research Council. Pro- fessor John C. McLennan, of the University of Toronto, retiring vice-president for Section B, delivered his address on “Atomic nuclei and 1 Toronto, December, 1921. SCIENCE * [Vou. LV, No. 1428 extranuclear electronic configuration.” The vice-presidential address was followed by a symposium on the Quantum Theory, with the following speakers: (A) R. C. Tolman, direc- tor, Fixed Nitrogen Research Laboratory, Washington, representing Section C (Chemis- try), A. A. A. S., “Review of the present status of the two forms of the Quantum Theory”; (B) H. B. Phillips, Massachusetts Institute of Technology, Cambridge, representing the American Mathematical Society, “Mathemat- ical aspects of the Quantum Theory”; (C) Saul Dushman, The General Electric Company, Schenectady, N. Y., representing the American Physical Society, “Some recent applications of the Quantum Theory to Spectra.” This meet- ing proved to be of very great general interest. At the business meeting of Section B, C. A. Skinner, of the Bureau of Standards, was elected to be a member of the section com- mittee, his term of office to end January 1, 1926. Dr. F. A. Saunders, of Harvard Uni- versity, is the vice-president for Section B for 1922. The American Physical Society——This soci- ety held sessions beginning Wednesday, Decem- ber 28, and continuing until Friday afternoon. The annual business meeting of the society was held on Friday, December 30, at which time the following officers were elected: Presi- dent, Theodore Lyman, Harvard University, Cambridge, Mass.; Vice-president, Charles EH. Mendenhall, University of Wisconsin, Madison, Wis.; secretary, Dayton C. Miller, Case School of Appled Science, Cleveland, Ohio; treasurer, George B. Pegram, Columbia University, New York, N. Y. The president of the Amer- ican Physical Society gave an address on “The spectroscopy of the extreme ultra-violet.” The physicists’ dinner was held on Friday evening at Hart House. During the sessions of the society 77 scientific contributions were read. American Meteorological Society—Sessions were held beginning Wednesday morning, De- cember 28, and continuing through Thursday afternoon. The annual business meeting was held on Thursday morning, and the following officers were elected: President, Sir Frederic Stupart, 315 Bloor Street, Toronto, Canada; May 12, 1922] Vice-president, W. J. Humphreys, U. S. Weather Bureau, Washington, D. C.; Secre- tary and Treasurer, Charles F. Brooks, Clark University, Worcester, Mass. On Thursday morning Professor Robert DeC. Ward, of Har- vard University, gave his address on “Ten- dencies and progress in climatology during the past decade.’”’ The meteorological luncheon was held on Wednesday at 1 p.m. at Hart House. On Wednesday afternoon the society held a symposium on “Improvements in synoptic weather charts, especially on the reduction of atmospheric pressure observations,’ at which the following papers were read: (1) “The his- tory of barometry in the United States,” C. Leroy Meisinger, U. S. Weather Bureau, Washington, D. C.; (2) “Reduction of barom- eter to sea-level,” C. F. Marvin, U. 8. Weather Bureau, Washington, D. C.; (3) “Upper air pressure maps as possible aids in the solution of the barometry problem,” C. LeRoy Mei- singer, U. S. Weather Bureau, Washington, D. C.; (4) “Sea-level vs. the Megadyne base,” Alexander McAdie, Harvard University, Blue Hill Observatory, Readville, Mass. (By title) ; (5) “Major wind streams vs. high and low pressure centers as the basis for weather fore- casting,’ W. G. Reed, Philadelphia, Pa. (By title); (6) “Cloud movements as aids in fore- casting,” C. F. Brooks, Clark University, Worcester, Mass. Fifteen other scientific papers were read during these sessions. Section of the Physical Science Committee of the National Research Council—Meetings were held in Hart House, Prof. H. G. Gale acting as chairman. It seemed to be the consensus of opinion that the Toronto meeting had been an excep- tionally interesting and inspiring one. Con- tributing to the success of the meeting was the untiring work of the local committees and the cordiality of the members of the University of Toronto and the Royal Canadian Society. The international character of the Toronto meeting was noted by the presence of more Canadians than usual and by the distinguished visitors from abroad. The secretary wishes to thank especially those who at the last minute took upon them- selves the work of preparing papers for the SCIENCE 521 joint meeting of Section B with the Associated Societies. S. R. WituraMs, Secretary, Section B SECTION K—SOCIAL AND ECONOMIC SCIENCES No separate session of Section K was ar- ranged for the Toronto meeting on account of the recent death of the secretary, Dr. Loomis. A joint session of the section was held, how- ever, with Section Q (Education) on Friday afternoon, December 30, 1921. At this meeting Dr. Frederick L. Hoffman, the recently elected secretary of the section, read an extended ad- dress on “The Organization of Knowledge,” subsequently reprinted in Scimnce of March 10 and March 17, 1922. Dr. Henry S. Graves of Washington was elected vice-president for Section K for 1922. Dr. Frederick L. Hoff- man, dean of the Babson Institute, Wellesley Hills, Massachusetts, was elected secretary; his term of office will expire January 1, 1925. An understanding was arrived at under which the section, during the current year, will concen- trate its efforts especially upon conservation problems. The American Metric Association, which is associated with Section K, held ses- sions on Friday morning and Friday afternoon, December 29. During this session, nine papers were read and much discussion was had sug- gestive of the slow but gratifying progress of the metric movement. On Friday evening the Metric Association held its annual dinner, par- ticipated in by a small but thoroughly interest- ed group of members. Freperick L. Horrman, Secretary WELLESLEY Hiuus, Mass. SECTION N—MEDICAL SCIENCES Section N (Medical Sciences) held a sym- posium on the Health and Development of the Child. Professor A. B. MacCallum, of MeGill University, presided. Dr. Joseph Erlanger of Washington University read his vice-presiden- tial address on “The past and the future of the medical sciences,” already published in Science, Vol. 55, page 135, February 10, 1922. The following papers were read: Hereditary factor in development: C. B. DAvVEN- 922 Port, Cold Spring Harbor, L. I. The metabolism of children in health and dis- ease: Haronp Baiuey, Cornell Medical School, New York. Newer aspects in the dietetics of children: Atrrep Hess, College of Physicians and Sur- geons, New York. Movie demonstration of the tonsil-adenoid work in the city of Rochester, N. Y.: Lu. Gourr, Publie Health Officer, Rochester, N. Y. The mental hygiene of children: C. N. Hincxs, Canadian National Committee for Mental Hy- giene. The meeting took place in the Academy of Medicine, Toronto, which was crowded far be- yond capacity. Throughout the symposium, there was a most interesting discussion of the papers. The experience of the sectional committee during the last seven years has convinced it that its former policy, to have a discussion of a definite topic with invited papers, was timely, instructive, and interesting to the members of the association, to those working in medical sciences, and to the community. There was, however, a growing feeling that the section should undertake to reach more effectively the investigators in the various fields allied to the medical sciences. It was felt that these workers require more than ever the stim- ulation that comes from discussion of papers by the workers in allied fields. An informal meeting was called on Decem- ber 28, at which representatives of medical workers, parasitologists, economic entomolo- gists and biologists were present. The central question was how real and widespread was the need for such closer coordination of allied workers; how this coordination could be met without the formation of new groups. There was a surprising unanimity of opinion of the desirability and the necessity of such closer coordination for mutual information and stimulation. It was decided to form no new groups. It was decided that the secretary of Section N, Medical Sciences, in consultation with the secretaries of the parasitologists, the two entomological societies and others, was to arrange a program in such a manner that it might be possible for the members of these re- lated societies to attend a meeting held under SCIENCE [Vou. LV, No. 1428 the auspices of Section N (Medical Sciences) with the minimum of conflicts; that Section N (Medical Sciences) should arrange an invita- tion program by representatives of the en- tomologists, the parasitologists, and medical workers, on topics of mutual interest. The opinion was definitely expressed that the spe- cialists have so far transgressed the narrow limits of their respective fields that there is an increasing need of information and stimulation and exchange of views on the part of those working in allied fields; and finally, that the meeting of Section N (Medical Sciences) should be devoted primarily to the coordination of such allied workers. This is a distinct departure from the policy of Section N in the past. If it should appear desirable to add to such a program, an addi- tional program in the interest of the larger membership of the association, such a program shall be arranged. It was also the consensus of opinion that once each year Section N (Medical Sciences) should hold a joint meeting with one of the national medical organizations or federations, so as to knit more closely the bonds between the American Association for the Advancement of Science and these other organizations. Such an arrangement already exists between the Federation of Experimental Biologists and Section N (Medical Sciences). It was pro- posed that once in every four years a joint meeting should be held between Section N (Medical Sciences) and the Anatomists, the Public Health Association, and the Bacteriolo- gists. Plans are now under way to make these sug- gestions effective. The secretary will appre- ciate suggestions and advice. This is no place to discuss the vexing problem of the relation of the sections, such as chemistry and engineer- ing, and the large national organizations so loosely affiliated with the association, but the problem seems to be the same in all these instances, and any assistance to this complex problem will be appreciated by these and other groups who must plan the meetings for the coming years. A. J. GOLDFARB, Secretary _/ NEw SERIES FE 7 ¢ SINGLE Copizs, 1 s RIDAY 99 INGLE Copies, 15 Cts. Vou. LV, No. 1429 » May 19, 19 ANNUAL SUBSCRIPTION, $6.00 The great advance made in incandes- cent lamp manufacture in recent years has made possible this new, superior microscope lamp, which offers the fol- lowing advantages : 1. Can be used with both the Abbe condenser and Dark-Ground Illuminator, with easy interchangeability; 2. Provides a powerful light source for oil immersion work, as well as dark- field microscopy; 3. Requires minimum time for adjustment ready for work; 4. Bulb used is a stock electric lamp, obtainable anywhere; 5. Makes a substage lamp when no condenser is on the microscope. For oil immersion work, this lamp is attached to the Abbe condenser, whether new or already in use on the microscope. The bulb, which ean be easily centered, by its position is always in the focus of a strong curve condenser, so that parallel light of even intensity is delivered. A special Blue Glass Dise is supplied for use in moderating the illumination when it is too. bright. No. 1844 Microscope Lamp, ineluding blue glass dise, lomo) elioal orrel ann Chia ey $13.00 Resistance for 110-volt, direct or alternating current....$ 6.00 Write for illustrated, descriptive circular Bausch & Lomb Optical om 409 St. Paul Street, Rochester, De iy: New York Washington Chicago San Francisco London Leading American Makers of Photographic Lenses, Microscopes, Projection Apparatus (Balopticons), Ophthalmic Lenses and Instruments, Photomicrographic Apparatus, Range Finders, and Gun Sights for Army and Navy, Searchlight Reflectors, Stereo-Prism Binoculars, Magnifiers and other high-grade Optical Products. = — = that ayes may se see. = Detter as gud a frter = Lipa ii SCIENCE—ADVERTISEMENTS CLINOSTAT Universal-Motor Driven WE HAVE developed an instrument which has many special advantages over the previ- ous types and embodies a rigidity and durability that cannot be secured from a clock mech- anism instrument. This outfit consists of two essential parts. First, what is designated as the Master Clino- stat, and, second, what may be designated as the Secondary Clinostat. The Master Clinostat consists of suitable reducing gears arranged so as to reduce motor speed of about 500 R.P.M. down to approximately one revolution in about 15 minutes. Any higher speed may be obtained. This speed is given to the shaft bearing the plate and suitable adjustable clamps hold a flower pot of 3 or 4 inch size. The supporting plate may be adjusted so that the plant may be rotated in either a vertical or horizontal direction, or in any intermedi- ary direction. There is attached as a driving means a flexible shaft, which is arranged on one end so that it may be inserted in the clutch of the motor rotator. It may also be attached to any other rotator or to any motor. The Secondary Clinostat consists of a suitable base and reducing gear, and supporting plates with clamp similar to the Master Clinostat, and the two shafts engage, and thus the Master Clinostat drives the Secondary Clinostat. Any number of these Secondary Clinostats may be thus connected and any number of experiments carried on at the same time. Some of these may be adjusted for rotation in a horizontal direction and some in a vertical direction. The method of engaging the two shafts is such that there is no binding and it is not necessary that they be exactly in alignment. The clamps for holding the flowerpots are very easily adjusted and will carry any size plant that may be contained in a 4 inch flowerpot. The adjusting mechanism in changing from vertical to horizontal rotation is done by simply operating a lever and is very easily operated. Each of these instruments is mounted on aheavy iron base, handsomely japanned, and all parts are finished in black with nickel plated trimmings. It makes a very handsome appearance and is an instrument which will be found a pleasure to work with and, at the same time, its rigid construction insures it durability and guarantees the continued service that may be ex- pected from this instrument. Cat. No. 8349 Master Clinostat, as described above. Complete with flexible shaft, three clamps, without flowerpot. Cat. No. 8349 A Secondary Clinostat, as described above. Complete with three clamps, but without flowerpot. PTTMTIMNITITUTTUNTTUTTUCCCTUCCTCUUCTEUULTC ON UUUTLCCLLCCCLULLELLUCCELCLCLCLLLLLLLCLCLLECLLL LLL. ELC ITTTTNTTTINTTUTUUTOTOTTUTIIUNUOTONITITITICUUUTOOONTOTITIUUTNONTOTITIITCNUTTNOTTTTOTUUUUTOTITUUTUTTTNTTTOI OT A Sign of Quality A Mark of Service AUN UVUUUUSUULOUUUUUUURNLUGRE LALO ELC ATUUTUVOUUUUUUUUUUUUUUOLULUUUDULLULULLULLLUDLLLUPUULULLLLLLLLLLLLLLLLLLU CCL W. M. WELCH SCIENTIFIC COMPANY Manufacturers, Importers and Exporters of Scientific Apparatus and School Supplies 1516 Orleans Street Chicago, Ill., U. S. A. SCIENCE A Weekly Journal devoted to the Advancement of Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS 11 Liberty St., Utica, N. Y. Garrison, N. Y. New York City: Grand Central Terminal Annual Subscription, $6.00. Single Copies, 15 Cts. Entered as second-class matter January 21, 1922, at the Post Office at Utica, N. Y., under the Act of March 3, 1879. May 19, 1922 No. 1429 Vou. LV Science or Athletics: Proressor Epwarp G. AIVAVANET TiN ype ts seems sree Gres Ue DE Manan nein, Jasna 523 Bugs and Antenne: Dr. BE. P. FEUT...............-.- 528 SONOS CAMB TOMI ET rtesernas oennnn-tnenktonavesnease?cuen cere 530 Scientific Events: A Count of Birds; The Chemical Exposi- tion; Fellowships in Mining Research; Eachange Professor to France in Engineer- ing and Applied Science........--...-----..-2:.0-0+--- 531 Scientific Notes and News...............--...-..---.-... 584 University and Educational Notes.................-.- 537 Discussion and Correspondence : Decerebration in Birds: Dr. FRANK W. WeyMoutH. The Bite of Lactrodectus Mactans: Proressor J. R. Watson. Water- Immersion Objectives: Dr. ALBERT MANN.. 538 Quotations : Health Organization of the League of Na- Special Articles: The Domestic Fowl as a Source of Immune Hemolytic Sera: Dr. Roscon R. Hynpke.......... 541 The American Association for the Advance- ment of Science: Tucson Meeting of the Southwestern Divi- SCOT A ne ee terete Fae Alario ave iy slaty Ura ln 542 SCIENCE OR ATHLETICS?! THERE has never been a period in the history of science when educational questions relating to its advancement have appeared to possess such interest or when discussions have dealt so freely with the shortcomings of the educational system in its relation to the training of students of science. On the one hand is an intensely practical industrial world, insisting upon a close scrutiny of the content of the college courses and of the methods used in administer- ing them,—from the standpoint of their imme- diate practical application to industrial prob- lems and from this standpoint alone,—while on the other is the world of the college teacher, seeing or thinking it sees much in science and in the teaching of science that is not to be judged in this limited fashion. We are turned this way and that in the attempt to see all viewpoints and to make use of all constructive advice. We desire that our students shall be as well equipped as possible in whatever of science it is possible to teach them in the time that is allotted to us, so that when they leave us to take up their share in the general ad- vancement of science they shall be able to acquit themselves honorably and to add what- ever they may in the application of science to the problem of increasing the happiness and comfort of humanity. Chemical education has not been spared in this discussion. Rather has it been the center of the major part of the discussion, for in no other single science has there been so spectacu- lar and so amazing a success in research and in the tangible results of the application of research to practical problems. It has there- fore come about that there is no other science in which it is more important that the college 1 Read before the Section on Chemical Educa- tion at the Birmingham meeting, April, 1922. Contribution from the Department of Chemistry, Purdue University. 524 and the university shall succeed in evolving proper and effective methods for the scientific training of the youth of the land, since it is upon the mental equipment and the mental habits of our present and future students that the future of the science depends. I propose to discuss certain phases of this subject from the standpoint of the college teacher. We respect the viewpoint of those practical men who, like Mr. Edison, feel that about the only trouble with the college gradu- ate is that he knows nothing and is good for nothing, also of those other, perhaps broader minded, technical men who recognize the value of college training but who believe that the teachings of the class room and student labora- tory are too far removed from the problems and methods of industrial applications. We also realize that some of our eminent research chemists are insisting that the college and the university should busy themselves with funda- mental principles and that they should keep hands off the plant processes, while others are equally emphatic in the view that research should be more along practical lines. \ Without, at present, presuming to argue any of these questions and respecting the integrity of all who offer them, we respectfully submit that in the effort of the college teacher to ad- minister courses of training, either routine or research in purpose, there are certain factors that constantly baffle and discourage, that these factors are to a considerable extent under the control of some of those who complain of our shortcomings and even that the continuance of such conditions is directly traceable to the activities of some of the critics. This may seem to be a statement that requires justifica- tion. I take it that every one will agree that the study of chemistry as a preparation for suc- cessful research or for work in the application of chemistry to practical problems is an enter- prise that calls for the concentration and supreme effort of high grade intelligence. Any person who expects to devote merely left-over energy and surplus thought to superficial aspects of any science,—and especially of foreordained to a career of The stu- chemistry,—is attainment that is mediocre or worse. SCIENCE [Vou. LV, No. 1429 dents of chemistry of past years who consist- ently followed the practice of “living the life” in college, making of themselves “all-around men” by the time-hallowed practice of taking part in every possible activity on the campus and off it, except the one for which they paid their money and for which they sacrificed the best years of their lives,—these men, with few exceptions, now make up the army of fillers of small positions, doers of small things and thinkers of small thoughts. They have a cer- tain routine part in the routine affairs of science but when they are gone their places will easily be filled by others who have fol- lowed the same line of reasoning and of con- duct. The college teacher who is dull and uninspir- ing in his contact with students will have a class of dull and uninspired students. This, no matter how well tramed he may be or how earnestly he may desire to fulfill his mission as a teacher. But if the teacher is all that we may desire to see in a teacher :—well grounded in his subject, of broad vision and purpose, energetic, inspired and inspiring,—he may fire his students with boundless zeal for the things and deeds of science, he may grip their intel- lects and emotions while in the class room or laboratory, he may fill them with the highest kind of resolve for high endeavor, but he ean not make true students of science of them when the whole atmopshere of the college is that of one grand hurly-burly of everything under heaven except study. Every teacher who hears this or who reads it knows that, to far too great an extent, this is the atmosphere of the modern American college. Some of our atmos- pheres are better than others,—or we might even say that some are worse than others. But when the student goes out from his session with the best teacher in the best college in the land he immediately finds himself in the midst of a multitude of distracting circumstances, events, activities and enterprises. It ean not be denied that the effect of this is to lower the efficiency of the student, to weaken his mental resolve for high accomplishment and to render impotent much of the effort that has been ex- pended by the instructor. It has repeatedly been emphasized that extra-curricular activi- May 19, 1922] . ties play a large part in the development of character and in the making of men who can deal with men. I am not denying this. Rather, I assent to it and give it emphasis. But I add, also, that the undue multiplication of student activities and campus side-shows plays an ever increasing part in the pulling down of the edu- cational system with which we have labored so carefully and so painfully, and in the dis- sipation of the scientifie efforts of those who should be our best students. Superficial train- ing is the inevitable result and superficial training and narrowness of viewpoint are the blight of our system of scientific education to-day. Many of our American colleges make an advertising point of the large numbers of stu- dents who flock to their doors, but I believe that it is no exaggeration to say that if we could exchange our annual crowds of graduates in chemistry, immature in intellect, unsettled in purpose and under-done in real scientific education as too many of them are, for a small fraction of this number of young men and women of good minds, well grounded in funda- mentals, possessing a broader culture and accustomed to profound thinking on serious matters, the world at large and the science of chemistry would be immeasurably benefited. That we are, even now, occasionally finding some of these minds and doing something toward their proper development is cause for real rejoicing. That we might find and de- velop more of them if conditions were changed is a proposition that will bear examination. What, then, is to be done about this ques- tion of the dissipation of the youthful fire of our students among the hundreds of non- essentials of college life? Change it, of course, say our critics. Exactly. And if our Amer- ican colleges were now, in the truest and most complete sense of the word, “educational insti- tutions” this would not, I verily believe, be a particularly difficult or perplexing undertak- ing. But, fellow scientists, our American col- leges are to-day waking into the realization that they have somehow developed a liason with an organization that not only is not educational in its purpose,—it is actually one of the most insidious destroyers of educational standards SCIENCE 525 that we have to combat to-day. This organiza- tion is no other than the modern highly com- mercialized intercollegiate athletic system, financed by forces that care nothing for edu- cation and fostered by extravagantly paid coaches who trample all of the ideals of educa- tion under foot in their desire for personal glory and personal profit. There is a perfectly legitimate and desirable field for college athletics. We desire that our students shall have systematic physical exercise because this makes for health and contentment and thus, indirectly, for scholastic success. We know also that the spirit of competition is an all-powerful incentive for excellence in any line of activity and the athletic game is the logical expression of this. But this idea has become almost entirely overshadowed through the de- velopment of a system that places the vast majority of our students upon the bleachers and concerns itself with an excessive degree of specialization with an almost negligible minor- ity. A friend of ours has tritely stated that the American people have become afflicted with a disease which he ealls “bleacheritis.” They find their highest enjoyment in lounging on the side lines, entertained by mediocre “movies,” bad vaudeville, athletic contests or any other novel spectacle, and they take too little inter- est in wholesome activity on their own part or in play for the sake of its effect upon their minds and bodies. Even the hysteria of the college “pep session” accomplishes only a tem- porary rousing from this apathy. The result, in college life, is the almost absolute failure of physical education to accomplish any important part of its mission to keep the bodies of our students healthy and their minds alert, and to turn them back into the class room and labora- tory full of vim and enthusiasm for the most important work of their education. This can not fail to work harm to the scholastic success of the student. That it goes even farther than this and that it seriously affects the eduea- tional standards of our colleges is a fact which we can not safely ignore. Within the past few months there has been an unusual amount of discussion of the matter of professionalism in college athletics. The colleges have come in for a great deal of eriti- 526 cism and especially in a few instances where players have been disqualified from intercolle- giate competition because of having partici- pated in games of a semi-professional nature, and where there have been exposés of the attempts of coaches and others to influence prospective student athletes by the use of money. How much may we expect to accom- plish by disqualifying a few players, here and there, or by the dismissal of a coach or two for the breaking of the rules regarding the payment of money to athletes? I think that we shall accomplish very little of a remedial nature by this sort of publicity unless we go considerably farther. These published cases of professionalism in students have been largely technical in their nature and it appears evident that the students in question do not feel any consciousness of guilt nor are they regarded as criminals by their fellows. The general public probably sees little in all this but a rather fantastic exhibition of hair-splitting and quibblng by college folk, who appear to magnify a purely technical offense into a serious case of law breaking. It is probably true that the majority of non-collegiate observers,—or at least of those who take an interest in ath- letic affairs,—sympathize with the players who are detected in what they regard as purely technical violations of unnecessarily strict tech- nical rules. The principal reason for all this is that the average person does not appreciate the real evil of professionalism in college athletics. He sees nothing inherently wrong in playing for money, any more than in doing any other legitimate thing for compensation. We have professional baseball and enormous numbers of us go to see it and feel that it is perfectly proper that gate fees should be charged and that the skilled players should be paid liberally for entertaining us. Why, then, should inter- collegiate associations adopt such drastic rules against college athletic professionalism and why should faculties attempt to enforce these rules so rigidly? This is certainly not done solely in order to insure fair play in inter- collegiate contests. The fact is that mere playing games for compensation, in the college or out of it, is not SCIENCE [Vou. LV, No. 1429 inherently immoral or wrong in any way, ex- cept as it may bear some relation to the vital concerns of the college in its efforts to promote true education. But we are insistent that the least taint of professionalism shall be kept out of our college athletics because we know that whenever we admit it we shade our scholastic standards. If petty, technical professionalism may enter then unlimited professionalism and commercialism to the last degree can not be excluded. I am saying no more than what is fairly common knowledge when I state that there is a sort of underground activity to-day that is exerting every effort to cireumvent and evade our regulations concerning amateurism. How- ever much some of us may boast of the “clean- ness” of athletics in our various colleges, we all know perfectly well that the cases of viola- tions of the rules that are occasionally brought to light are merely the more obvious ones. We disqualify our players for participating in a summer game in a village of a neighboring state but we harbor far more serious cases of real professionalism in the boys who are pro- vided with workless jobs, fraternity homes and other outside-financed “education” in order that they may take important places on ath- letic teams. These boys are hunted out while yet in the secondary schools and they are brought to college and kept there by an organ- ized effort on the part of men who, in some cases, care nothing for educational standards or for education itself, but who know athletic excellence when they see it and who are deter- mined to have the best of it for the college of their choice. This work is done quietly, as a rule. Occasionally some novice in the business makes a slip and an uproar ensues. This has happened on several occasions, quite recently. As a result, it is apparent to a close observer that the interests that work for commercialism are now scurrying to cover. They realize that they have been riding to a fall and in order to save intercollegiate competition from the impending wreck they have become loud in their pharisaical professions of a determination to see that the law is obeyed and that college sports are kept clean. But even in this they are careful to keep attention focused upon the May 19, 1922] summer-playing bugaboo, so that the more seri- ous issues are obscured. Visualize, if you will, the college teacher,— instructor, professor, department head or dean,—making his final summary of grades for the members of his classes or sending in his mid-semester reports of delinquencies. Ima- gine that you see the name of one of these star athletes upon the list of those who have been found wanting. No very vivid imagination is required to complete the picture. It is quite likely that many of our teachers are upright enough and strong enough to resist the pres- sure which will result. Also it is quite possible that many are not so strong. This is particu- larly true of the teachers who hold the more subordinate positions and who feel themselves less secure in their standing. And the assault against class standards is not, by any means, confined to actual threats against individual instructors. A more subtle influence in the form of a very human and a very universal desire for personal popularity and a lurking fear of loss of dearly earned prestige finally leads to the same result. As individuals and as faculties we feel more and more strongly a timidity in the enforcement of rules,—not only rules of scholarship but rules of every deserip- tion. This, I am firmly convinced, is the basic cause for the now too obvious drift of our colleges toward laxness in morale and toward the lowering of the standards of work required of those who are to receive our degrees. The futility of our most earnest efforts toward inspiring and_ effective teaching becomes increasingly apparent. Fellow chemists, this is a problem which affects all of us most vitally. We have had an enormous amount of publicity for the fact that American science was not, before the war, able to cope with German science and various rea- sons haye been assigned for this undoubted fact. The efficiency of American science was suddenly increased, during our war period, by the spur of life-and-death necessity. But this spur no longer exists and if our chemistry,— research, applied or teaching,—is to continue to hold its own we must see to it that our young college graduates go forth into the struggle fully equipped with well trained minds SCIENCE 527 and hands,—vwell trained not only in the ability to do certain routine tasks that we have set for them in the colleges and universities, or in the ability to follow slavishly in the methods and habits of thought of their teachers, but broadly trained in scientific fundamentals, in general culture and in the ability to do independent and profound thinking on important matters of science and of life. This they do not now acquire as they could and as they should. Whether or not you may agree with the con- clusions I am about to draw, I do not believe that the essential facts as I have already stated them can successfully be denied. I do not be- lieve that we can make any very great head- way in our effort to stop the obvious decline in our standards of scientific education until we can succeed in limiting the distractions of campus activities to sane and reasonable values. We can not bring about this change until we divorce the educational system from the present commercialized system of intercolle- giate athletics. And, finally, the ineubus of commercialized athletics can not be shaken off until we throw out of our educational system all of our extravagantly paid professional coaches. For a fraction of a year of work we pay a football coach three or four times as much as an able and experienced professor in any other department »will receive. We need not feel any surprise when we discover that he has done the best he could to earn this salary and thus to insure permanency in his position, or that he has employed every means in his power to obtain the best material for his teams, rules or no rules, and we need not expect that anything short of constant vigilance will serve to eurb his extra-legal activities. His job is to develop a team that will be able to outplay the teams of approximately seven other colleges in as many contests of approximately forty minutes each, per season. He is going to do this to the best of his ability, regardless of cost, and we may think as we please about it. Our colleges are spending relatively enor- mous sums upon athletic activities whose end is not, in any sense, physical development of the students but solely the winning of games and championships, while the educational needs are grievously suffering, through lack of sup- 528 port. This spectacle is not one that can be contemplated with equanimity by those who have faith in education and hope for its future development. We are losing the sense of per- spective in educational affairs and we may not expect to elevate our colleges from a position of mediocrity in scientific training until we shall have reaequired this sense. This happy consummation is not to be attained so long as we remain in the present state of competitive hysteria or so long as we continue to provide disproportionate support for an activity that has no relation to scientific or other education except that of obstruction to it. I do not envy those colleges of the United States that are planning to sink millions in athletic stadia. I verily believe that the day will come when these colossal monuments to the suicidal folly of a so-called “educational” system will be an offense to the eyes of believers in true learning, for in that day we shall find it hard to convince our critics that we do not esteem the spectacle of two hundred and eighty minutes of actual playing of football each year as of greater importance than the training of American youth in the science of chemistry. And now, in what way can there be any truth in the statement made in the earlier por- tion of this paper, to the effect that the men who are looking to the college to supply trained chemists, as well as trained scientists in other fields, are directly responsible for the continu- ance of this condition? Simply by this: that these people are, almost without exception, college and university alumni and that organ- ized alumni activities concern themselves almost exclusively with efforts to further ath- letic successes in their. colleges, to the neglect of opportunities to better educational condi- tions. This is certainly not because of any desire to hamper the educational work of the college. Quite the opposite is the case. They do not busy themselves so much with other modes of assistance, merely because for some reason it has not occurred to them that such assistance is possible. They believe that the college needs advertising and they have repeat- ed so often that they nearly believe it, the old fallacy that athletic prowess is the best adver- tisement for institutions of higher learning. SCIENCE [Vou. LV, No. 1429 I hope that I do not merit the appellation of “alarmist” but I do sincerely believe that the present condition and the present trend of scientific education is such as to give thought- ful people cause for concern, and I believe that we shall not get very far in our attempts to improve matters until we elect to discuss these things fearlessly and openly and then courageously to act upon our ecunviections. In the inspired words of Vernon Kellogg :! “It is incredible that in this all-important matter of getting our higher education straightened out we shall go on indefinitely acting as if we were helpless. Let the college or the university that wishes to do the greatest thing just now to be done for higher education and true learning in America step forward and boldly do the un- usual thing. Let it devote the most of its energies to the most important part of its work. It will soon not be alone in its doing. It will become a prophet with honor in its own land.” The choice of courses is now ours. If we fail to exercise that choice in the name of true education and true science, we may later find that the decision has passed from our grasp. Or can it be that, as history has so often re- corded of individuals, of organizations and of nations, we shall continue simply to drift until the accumulation of disaster shall shock us into realization? KE. G. Manin BUGS AND ANTENNAE! Members of the Entomological Club of Mad- ison, entomologists in various parts of the United States, and radio “bugs”: The Madison Entomological Club, as host, 1 ScreNcE, 54: 19 (1921). 1A radio lecture given at the request of the Entomological Club of Madison, Wis., and broad- casted from the General Electric Company’s sta- tion, ‘‘WGY,’’ at Schenectady, N. Y., at 9 P.M., April 24, 1922. The transmission to Morgan- town, W. Va., about 400 miles, was practically perfect, it being as distinct as though presented in a classroom. Unfortunately static or other conditions prevented it being heard at Madison, Wis., and seriously interfered at New Haven, Conn., and Wooster, Ohio. May 19, 1922] welcomes all who listen in. It is a great pleasure in this first radio entomological lec- ture to be specifically authorized to convey to Madison entomologists and others the greetings and best wishes of Dr. Howard, chief of the Federal Bureau of Entomology, Dr. Gibson, Dominion entomologist of Canada, and the presidents of the older entomological societies on the eastern coast, namely, Cambridge, New York, Brooklyn, Washington and Philadel- phia, the last founded in 1859, the oldest of its kind in the country and with its founder, Ezra T. Cresson, still active. The pioneer and vet- eran entomologist of Canada, Dr. Bethune, has authorized the extension of his congratulations and best wishes to present day workers. We would also express our appreciation to the General Electrie Company of Schenectady for placing this lecture upon its program. There are great possibilities in broadcasting and, for the purpose of determining its present value, the speaker requests reports by mail giving the number of entomologists at each unit receiving this lecture. Crop and market reports are broadcasted. Why not warnings of insect depredations? Regional programs and lectures by visiting specialists are very desir- able present day possibilities. This has been ealled the age of man. Is it not really the age of insects? They occur almost everywhere. They actually imperil our existence by attacking crops, destroying for- ests, annoying and worrying domestic animals, and are well known carriers of deadly infec- tions, such as typhoid fever, yellow fever, cholera and sleeping sickness. Were it not for the beneficent activities of birds and many other natural agents, we would be overwhelmed by the numerous pests contemptuously desig- nated as bugs. There are in New York State some 20,000 different. species of insects and perhaps 100 entomologists engaged in collect- ing and studying them. There are presumably more than 100,000 species in the United States with over 1,000 entomologists and in - the entire world a million to ten million different species of insects (a large proportion un- known) and a relatively much smaller group engaged in their study. Each of these insects occurs in four distinct stages, namely, the egg, SCIENCE 529 the maggot or caterpillar, the pupa or chrysa- lis and the adult or perfect insect, conse- quently the entomologists of the world are en- gaged in the stupendous task of classifying and learning the habits of four to forty million different forms. Accurate differentiation must precede investigation of life histories, other- wise deplorable confusion is almost inevitable. There is no group in the animal, the vegetable or the inorganic kingdoms which presents so many diversities as the exceedingly numerous and varied forms known as inseets. It usually takes several years and frequently much longer to work out a satisfactory life story of even one insect, consequently a limitless field is before us. We extend to radio “bugs” and others interested an invitation to join in ex- ploring and making known this vast realm of the undiscovered. Man is inelined to congratulate himself upon his wonderful progress, forgetting that in many cases he has yet to reach the degree of perfec- tion seen in numerous animals. The recently developed monoplane, for example, does not differ greatly in its general proportions from those of our hawk moths, and the biplane is almost a duplicate of a pair of dragon flies, one flying above the other; both models that have been favorites in the insect world for thousands of years. Dare any man say that our latest advancement in applied science, namely, the radio telephone, is more than a relatively crude modification of methods which have been used by insects for countless ages? Radio “bugs” are rightfully proud of their aerials or antenne, yet they have developed relatively few types and apparently have not learned, except in a very general way, of the million or more different kinds of insect anten- ne, each admirably adapted to a specific pur- pose and some wonderfully suggestive of aerial communication. Ages ago the gall midges, minute flies which produce galls on many plants, learned the ad- vantages of elevated or elongated antenne and we find here species which have solved the problem by the development of greatly elon- gated antennal segments, thus increasing very materially the length of the entire organ and others which have attained the same end 530 through a doubling or trebling of the normal number of segments or joints. As a result, some have antenne twice as long as the body. Each segment is a unit and though the com- parison may not be a strictly accurate one, we are inclined to regard the antennal segments as linked in multiple units. It is well known that the antenne of many insects have very efficient olfactory and aud- itory structures. The latter may be simple hairs springing from sensory pits, whorls of hairs or even more complex structures. The radio enthusiast would certainly be inter- ested in an aerial or antenna of the multiple inverted umbrella type, the arms of the um- brellas being loops and in some forms greatly extended on one side, presumably for directive receiving; the umbrellas arranged in double or triple series in multiple units mounted with flexible connections and an articulate base per- mitting limited rotation. Such structures are found in gall midges. We would eall attention to the peculiar cir- cumfila or encircling threads supported by numerous short stems entering sensory pits or detectors, the latter within the antennal seg- ments. The simplest type of cireumfilum is a low thread or circle, not a coil, near the base of the segment and frequently connected by a filament on one face with a similar circle near the opposite extremity. These threads may be modified and follow a sinuous or wavy course instead of a straight one; they may be greatly increased in number to form an enclosing net work, suggestive of the bed spring aerial; the portions between the supporting stems may be greatly stretched or drawn out as it were to form relatively enormous loops and in some we have the loops on one side of the antennx very greatly produced. We may even find in some antenne a combination of the low and simple type together with highly developed loops. There is one group where these struc- tures are modified in such a curious way as to resemble miniature horse shoes upon opposite sides of each segment; the supporting stems suggesting the nails used for the attachment of horse shoes. There are over a thousand variations in gall midge antenne, presumably for cause. Solo- mon advised some of his fellow mortals to con- SCIENCE [Vou. LV, No. 1429 sider the ant. May we suggest to radio enthu- siasts a similar attitude toward gall midges— master builders of antenne which are both the admiration and despair of man. Concluding, may we register faith in radio and radio antenne, anticipating through them closer and more helpful relations with fellow men. E. P. Feit Stare ENTOMOLOGIST or New York JOHN CASPER BRANNER THe following resolution was passed at a meeting of the Academic Council of Stanford University held April 7, 1922: _ As witness of our affection for Dr. Branner and respect for~his memory, we desire to make our own and incorporate (in part) in the minutes of the Academie Council the appreciation pre- pared for the Illustrated Review by his friend and colleague, Professor Stillman: “*TIn the death on March first of President Emeritus John Casper Branner, Stanford Uni- versity loses one of its most distinguished schol- ars, one of its greatest teachers and most respect- ed and beloved personalities. “‘Dr. Branner was born in New Market, Ten- nesee, on July 4, 1850. He attended school at Maury Academy in Dandridge, Tennessee, and later enrolled at Maryville College. At the age of eighteen he entered Cornell University, where he received his bachelor’s degree. ‘‘While still an undergraduate he was selected (1875) by Professor Charles F. Hartt to assist him in a geological survey of Brazil, which ocea- sioned several years of work in Brazilian geology, In 1882 he was again commissioned, by the United States Government, to go to South America to investigate insects injurious to cotton and sugar-cane industries. From 1883 to 1885 he was engaged by the Pennsylvania Geological Survey to make a topographic map of the Lackawanna Valley. ‘(When David Starr Jordan became president of the University of Indiana in 1885, he ap- pointed his Cornell college and fraternity mate to the professorship of geology at that institution, a position he held until again called by Dr. Jordan to the similar chair in Stanford Univer- sity. In the meantime he acted (1887-1892) as state geologist of Arkansas, while retaining his chair at Indiana. ‘¢From 1891 until his retirement from the uni- May 19, 1922 versity in 1915, Dr. Branner occupied the head- ship of the department of geology and mining, holding also the office of vice-president of the university from 1898 to 1913. Upon the creation of the title of chancellor for Dr. Jordan, in 1913, Professor Branner was elected president, a posi- tion which he held until January, 1916, when he also retired under the age limit established by the university, and became president emeritus. During his years of service at Stanford, Dr. Branner found occasion to direct or participate in professional missions, such as his expedition to Brazil under the patronage of Alexander Agassiz in 1899, and again in 1907-1908. He was also one of the special government commissioners on the Panama Canal, and on the California earth- quake of 1906. ““The scientific service of Professor has been widely recognized. He was a member of the National Academy of Sciences, the American Philosophical Society, was president (1904) of the American Geological Society, vice-president (1890) of the American Association for the Ad- vancement of Science, held membership in the Geological Societies of London, Edinburgh, France, was president (1911) of the American Seismological Society, and was a member of geologic and geographic societies of several Bra- zilian states and of other countries. He has re- ceived the degrees of Ph.D. from Indiana Uni- versity in 1885, of LL.D. from the University of Arkansas in 1897, from Maryville College in 1909, and from the University of California in 1915, and the degree of Se.D. from the University of Chicago in 1916. ‘His publications are numerous and, while the great majority are on geology, many evidence the breadth of his active interests in botany, ento- mology and other lines of natural sciences. His grammar of the Portuguese language (now in its fourth edition) grew out of his Brazilian experi- ence. His bibliography of Clays and Ceramics, an important compilation; the ‘‘How and Why Stories,’’ a charming collection of southern negro dialect myths (1921); his genealogy of ‘‘ Casper Branner of Virginia and His Descendants’’; and his recently completely but as yet unpublished translation from the Portuguese of . Alexandre Herculano’s Establishment of the Inquisition in Portugal, all evidence his breadth of interests and his tireless energy. ¥ ““As a teacher Professor Branner exerted upon his students an influence which inspired them to their best efforts. His broad experience, his own sytematie and untiring research, his realization Branner SCIENCE 531 of the supreme importance of practical experience as the final test of all theories, were well calcu- lated to stimulate the ability and energy of his students, while his simple, sincere, and sympa- thetic personality attached them to him with a rare devotion. ’’ Dr. Branner’s attitude toward the office of president was characteristically expressed in his inaugural address: “*T am here to serve you in every way in my power and in everything that pertains to your work as instructors in the university and as scholars interested .in your own special lines of work. I expect and I intend to be the servant of every member of this faculty except myself. I consider the support I can give you my most important duty, and it will be my _ greatest pleasure.’’ In becoming president of the university, Dr. did not cease to be teacher and col- league. He made the problems of all the depart- ments his own. In his relations with students and faeulty the informality of attitude and high courtesy were unchanged. He maintained the same dignified simplicity he had exhibited as executive head of his department. Dr. Branner’s life is a great heritage for Stan- Branner ford University, for California, and for the nation. Ray Lyman WILbvrR, President SCIENTIFIC EVENTS A COUNT OF BIRDS RENEWED interest in the bird population of the United States has led to a revival of the efforts, begun in 1914, by the Biological Survey of the United States Department of Agricul- ture, to collect information on the number and distribution of the birds breeding in this country. Counts have been made each suc- ceeding year, and interested persons who are thoroughly familiar with the breeding birds of their respective vicinities are asked to aid in the work. By continuing these counts over a period of years and counting the same areas each year, knowledge can be gained not only of our total bird population but also of its fluctuations from year to year. The counts, moreover, will greatly help in determining what effect the present state and federal laws have on the inerease of game and_ insectivorous birds. The department hopes that counts will be continued on all land where they have pre- viously been made, and it especially desires to obtain also series of counts indicating the bird life on the plains; on the deserts, both with and without irrigation, and in the southern and western states. It might be well to select new areas where physical conditions are not likely to change much for a number of years, so that if suc- ceeding annual counts show changes in bird population it will be known that they are not due to changed environment brought about by On the other hand, there is much to be learned regarding the adaptation of birds to changes of environment; any area therefore on which reports can be made year after year may be chosen, even though conditions are likely to change. Possible inability to repeat a count on the same tract need not, however, deter any one from making the count this year. The height of the breeding season should be chosen for this work. In the latitude of Wash- ington, D. C., at latitude 39 degrees, May 30 is about the right date for the first count. In the latitude of Boston the work should not begin until a week later; while south of Wash- ington a date still earlier than May 30 should be selected. The department wants to learn how many pairs of birds actually nest within the selected area. Birds that visit the area only for feeding purposes must not be counted, no matter how close their nests may be to the boundary line. man. Several kinds of counts are needed for a study of the relative abundance of birds under changing and stationary conditions. It is hoped that many persons interested in bird life will make one or more counts this season. If only one count is made, the tract selected should represent average farm conditions for the locality, should not have an undue amount of woodland or orchard, and should contain not less than forty acres a quarter of a mile square nor more than eighty acres. If there is an isolated piece of woodland of from ten to twenty acres conveniently near, a separate count of the birds nesting there will be useful in addition to the count on the rest of the farm. In this case the report, in addition to specify- SCIENCE. [Vou. LV, No. 1429 ing the size and exact boundaries of the area, should give the principal kinds of trees, and whether there is much or little underbrush. A third count is desired of some definite area of woodland, which is part of a larger timbered tract. Still a fourth count, supplementary to these is needed. The average farm in the - northeastern states contains about one hundred acres, and the average count hitherto has been of the birds nesting on the fifty acres of the farm nearest to and including the farm build- ings. It is now necessary to obtain counts also of the remainder of the farm, the wilder part containing no buildings, especially on the same farms where counts about the buildings have already been made. Besides these, counts on any other kinds of land are much desired for comparison. Any one who is willing to do this work is requested to send his name and address to the Biological Survey, Washington, D. C. Full directions for making a count and report blanks will be sent in time for plans to be made before the actual time for the field work. Since the bureau has no funds with which to pay for this work, it must depend on the services of voluntary observers. THE CHEMICAL EXPOSITION! Tue Eighth National Exposition of Chemical Industries will be held this year in the Grand Central Palace, New York, during the week of September 11 to 16, inclusive. It will follow immediately upon the fall meeting of the American Chemical Society. The early date will give college and university men an oppor- tunity to see the exhibits before the beginning of the college year. There is much in this coming exposition to interest university men. Each floor has exhibits of laboratory apparatus, and one floor has a considerable group of this type of equipment. Many new pieces of ap- paratus, new chemical compounds, and other material and instruments will be found here. The interests for industrial chemistry in the exposition are wide and varied: from raw ma- terials in minerals, ores, manufacturing crudes or by-products, through the range of ma- 1From the Journal of Industrial and Engineer- ing Chemistry. May 19, 1922] chinery, apparatus and equipment and instru- ments for control, precision, recording, gaging and measuring, and a thousand other items used in converting the raw materials into the finished products. The finished products them- selves, whether they be organic, inorganic, solid, liquid, gaseous, or of any other form, are all to be there. Many new things upon which manufacturers were working when the war ended and which have been more leisurely per- feeted since will be shown for the first time. Industrial progress continually calls for greater advancement and perfection in manufacture, and each year sees many notable improvements upon the exhibits in the exposition. Counting only these, the time of technical and business men is well spent in inquiring into the exhibits. One exhibitor, who for the past few years has been devoting time to the perfection of a new form of apparatus, said the other day that it is now when men have time to spare for considera- tion of these things that he expects a consider- ably larger and more interested attendance in his booth. ‘When the plants are idle as they are now, the most progressive companies are examining into our apparatus, and a remark- able thing is that we are making some installa- tions in plants which are now closed, so that when they begin work they will be in better position than ever and have an advantage in taking this opportunity to prepare to reduce their costs for the future. I’m looking for many more such openings through our exhibit and with considerable enthusiasm for the entire exposition.” The managers report that three full floors of the Grand Central Palace are already taken for the exposition and a part of a fourth. They expect all space will be engaged before the opening date. Already, 303 exhibitors have contracted for space. The exposition will contain two interesting special sections: one upon the subject of fuel economy, where exhibits intended for the more efficient use of fuel, its combusion, distribution, or control will be made. .The other will deal with shipping containers, including the container itself, whether of metal, wood, fiber, paper, glass or in cooperage products of slack and tight barrels, tanks and towers, and with SCIENCE 538 machinery for packaging, labeling, handling, and conveying the packaged material and mark- ing it ready for final shipment. Work upon the program has not yet been actively undertaken but it may be expected to compare more than favorably with the high standards of the preceding expositions. The management have returned to the Grand Cen- tral Palace with their offices, and all inquiries should be directed there. FELLOWSHIPS IN MINING RESEARCH THE cooperative department of mining en- gineering of the Carnegie Institute of Tech- nology, Pittsburgh, announces the offer of two fellowships in mining research, and two in teaching and research, in cooperation with the Pittsburgh Experiment Station of the United States Bureau of Mines.. The fellowships are open to the graduates of universities and tech- nical schools who are properly qualified to undertake research investigations. The value of each fellowship is $750 per year of ten months beginning on July 1 for the position of research fellow and on August 1 for teach- ing fellow. Investigations will be on the following sub- jects: (1) Acid Mine Waters: (a) physical- chemical study of the mechanism of corrosion in acid mine water; (b) neutralization with limestone, blast furnacé slag, ete.; (c) recovery of iron oxide for gas purification and other purposes; (d) purification for use in boilers. (2) Shooting Coal: (a) faetors in shot firing which favor the production of lump coal; (b) effect of location, size, and depth of bore holes; (c) kind of explosive; (d) sequence of firing; (e) method of charging and firing; (f) method of eutting coal. (3) Spontaneous Combustion and Coal Storage: (a) effect of size of coal; (b) effect of moisture; (c) effect of anthraxylon and attritus; (d) action of various forms of sulphur. (4) Geology: (a) relation of rela- tive proportions of anthraxylon and attritus in coal to its coking properties and by-product yield; (b) correlation of coal seams by micro- scopic characteristics; (c) constitution of coal seams in western Pennsylvania. (5) By- products Coking: (a) determination of the heat of carbonization of coal; (b) determina- 034 tion of the volatile matter in coke at various temperatures. (6) Utilization of Coal; (a) study of the economic utilization of the roof coal of the Pittsburgh seam, including struc- ture, composition, coking properties, and by- product yields.. (7) Coal Mining: (a) deter- mining the compressive strength of coal from various beds. All the time of the research fellow is to be devoted to work in the Experimental Station of the U. 8. Bureau of Mines which is located adjacent to Carnegie Institute of Technology. The position of teaching fellow includes ten hours each week devoted to teaching work in mining, and the balance to work in the Experi- mental Station. EXCHANGE PROFESSOR TO FRANCE IN ENGINEERING AND APPLIED SCIENCE Dean JoHN Frazer, of the Towne Scientific School of the University of Pennsylvania and professor of chemistry, has been chosen as ex- change professor to France for the coming academic year, by the committee on exchange with France of professors of engineering and applied science, representing Harvard, Yale, Columbia, Cornell, Massachusetts Institute of Technology, the Johns Hopkins and the Uni- versity of Pennsylvania. The movement for the annual exchange with France of a professor of applied science had its origin as the result of a letter written shortly before his death by the late President Richard Maclaurin, of the Massachusetts Insti- tute of Technology. tion responded very cordially to the offer for the annual exchange of a professor and select- ed for their first representative Professor Jacques Cavalier, rector of the University of Toulouse, and a well-known authority on metal- lurgical chemistry, who divided his time during the current academic year among the seven cooperating institutions, namely, Columbia, Cornell, Harvard, Johns Hopkins, Massachu- setts Institute of Technology, Pennsylvania and Yale. The American universities selected as their first outgoing representative for the first year Dr. Arthur E. Kennelly, professor of elec- trical engineering at. Harvard University and The French administra- SCIENCE [Vou. LV, No. 1429 the Massachusetts Institute of Technology. He has met with great success in his undertaking in France, and in addition to lecturing before numerous French technical schools was assigned by the French educational authorities, through M. Petit Dutaillis, minister of public instruc- tion in France, to spend several weeks at the Universities of Paris, Grenoble, Lyons, Mar- seilles, Toulouse, Bordeaux, Nancy and Lille, giving in each a course of lectures, some tech- nical and others of a more general character. Dean Frazer in the course of his work of lecturing in French before the various univer- sities and scientific societies of France, will have favorable opportunities of studying at close range French educational methods, espe- cially as applied to science. Dr. Frazer represents the fourth generation to be graduated from the University of Penn- sylvania, and the third generation to be con- nected with its faculties. His grandfather, John Fries Frazer, from 1844 till his death in 1872, was professor of natural philosophy and chemistry in the University of Pennsyl- vania and vice-provost from 1855 to 1862. He was one of the incorporators of the National Academy of Sciences in 1863. His father, Dr. Persifor Frazer, became professor of chemistry in 1872, which chair he held until his appoint- ment to the Second Geological Survey of Penn- sylvania. He died in 1909. Dr. John Frazer was born in Paris, France, on February 5, 1882. In 1904 he was appointed instructor in chemis- try, being later promoted to assistant professor- ship and subsequently to a professorship. In 1912, upon the reorganization of the old col- lege, he became dean of the Towne Scientific School, which position he has held since, except while on leave of absence when in the service in 1918. SCIENTIFIC NOTES AND NEWS Sir AUCKLAND GEDDES was given the hon- orary degree of doctor of laws by the Univer- sity of California at the recent Charter Day exercises celebrating the fifty-fourth anniver- sary of the university. The British ambassador was the main speaker on Charter Day, the subject of his address being ‘Some of the effects May 19, 1922] of increasing scientific knowledge upon consti- tutional government.” On May 1 a number of the friends of Colonel Fielding H. Garrison gave a dinner in his honor in Washington. Dr. Harvey Cushing presided and Dr. William H. Welch gave an account of Dr. Garrison’s work in medical history and bibliography. Dr. Garrison will leave shortly for work in the Philippines. Prorsessor Freperic §. Les, of Columbia University, has been elected vice-president of the International Association of the Institut Marey of Paris. To fill the place of the correspondent in geometry in the Paris Academy of Sciences, vacant by the death of Professor Noether, of Erlangen, M. René Baire, of Dijon, has been elected. Tue Bessemer Gold Medal of the British _ Iron and Steel Institute for the year 1921 has been awarded to Mr. Charles Fremont, in recog- nition of his services in the advancement of the metallurgy of iron and steel and the tech- nology of the testing materials. At the fifth annual meeting of the British Society of Glass Technology held on April 26, Professor W. E. §. Turner was elected presi- dent. Dr. A. Putur, professor of systematic bot- any in the University of Utrecht, Holland, has become director of a second botanical garden presented to the university by the heirs of the late August Janssen, who founded his garden in 1905 near his country residence about fifteen kilometers from Utrecht. ; Dr. L. R. Wivutams, formerly deputy com- missioner of health of New York State and for the last four years director of the Rocke- feller Commission on the Prevention of Tuber- culosis, has been appointed managing director of the National Tuberculosis Association in the place of Dr. Charles J. Hatfield, of Philadel- phia, who resigned to give most of his time to tuberculosis work in Philadelphia. On May 1, R. T. Stull was relieved of the superintendency of the Ceramie Experiment Station of the Bureau of Mines at Columbus, Ohio, and made_ supervising ceramist for the SCIENCE 539 bureau as a whole. He will act under the direc- tion of the chief mineral technologist and will have supervision in technical matters in ceram- ies, and such related investigations of non- metallic minerals as may from time to time be assigned to him. EK. R. SHeparp, known for his work in elee- trolysis at the Bureau of Standards, has re- signed to engage in private practice. Tue Universities of Melbourne, Sydney and Adelaide have united to invite Professor Hin- stein, should he visit Java, to continue after- wards to Australia and visit the principal cities. O. P. Hood, chief mechanical engineer of the Bureau of Mines, will spend the summer in Europe investigating recent developments in fuels. Dr. R. B. Moors, chief chemist of the Bureau of Mines, sailed on May 6 for England, preparatory to spending two months in various European countries for the purpose of obtain- ing data on chemical and mineral technology. Dr. Moore will visit England, Germany, France, Austria, Czechoslovakia, Holland and Belgium. Durine the summer Messrs. C. O. Peak, O. A. Plunkett, C. L. Porter and P. A. Young will be employed in plant disease survey work in the State of Illniois.. This survey is under the general direction of Professor F. L. Ste- vens and under the special direction of My. L. R. Tehon. THE committee on the C. M. Warren Fund of the American Academy of Arts and Sei- ences voted the following grants at its meeting held on May 4: $500 to Professor C. James, New Hampshire College, to assist a research on the ytterbium earths; $500 to Professor Charles A. Kraus, Clark University, to be used to con- tinue his investigations on the constitution of metallic substances. Applications for grants should be made to the chairman of the com- mittee, Professor James F. Norris, Massachu- setts Institute of Technology, Cambridge, be- fore the next meeting of the committee, which will be held on October 1. Proressor Winuiam H. Hopsss, of the Uni- versity of Michigan, gave a lecture at the Sor- bonne, University of Paris, on April 29, on 536° “Les guirlandes insulaires du Pacifique et la formation des montagnes.”’ On May 1 he lec- tured at the University of Grenoble. Pro- fessor Hobbs has now sailed for the West Indies and South America, with the intention to return to Ann Arbor at the end of August. Dr. Irvinc Lanemuir, of the General Elec- tric Company, spoke before the Delaware sec- tion of the American Chemical Society in Wil- mington on April 19 on “Molecular structure and its relation to chemical valence.’ Proressor H. A. Wiuson, of the Rice Insti- tute, Texas, will lecture at the summer session of the University of Chicago on ‘The electrical properties of gases.” Tue following public lectures will be given at University College, London, during the present term: “Atoms, molecules and chemis-. try,” three lectures by Sir J. J. Thomson; “Insects and disease,’ four lectures by Sir Arthur Shipley; “Recent discoveries in Egypt,” by Professor Flinders Petrie; and “The expansion of European civilization,” four lectures, by Professor W. R. Shepherd, of Columbia University. THe Linacre Lecture of the University of Cambridge was delivered on May 6 by Sir Humphry Rolleston, on the subject of “Med- ical aspects of old age.” The Journal of the American Medical Asso- ciation states that the National Academy of Medicine of Venezuela has decided to hold a celebration of Pasteur’s centenary. A prize, consisting of a gold medal and 2,000 bolivares, will be granted to the author of the best work presented. A portrait of Pasteur will be placed in the assembly room of the academy and a special medal will be engraved. The sixteen hundred volume library of the late George Trumbull Ladd, professor of moral philosophy and metaphysics at Yale Univer- sity, has been given to the Hatch Library of Western Reserve University. Professor Ladd was a graduate of Western Reserve College in the class of 1864. Cart Lumuourz, born in Norway in 1851, formerly engaged in anthropological explora- tion and research for the American Museum SCIENCE: [Vou. LV, No. 1429 of Natural History and other institutions, died at Saranac Lake, N. Y., at the beginning of the present month. Sir Autrrep Pearce Goup, late vice-chan- cellor of the University of London, and presi- - dent of the Medical Society of London and of the Rontgen Society, died on April 19 at the age of seventy years. Proressor Reng BouN, a director of the Badische Anilin u. Sodafabrik, and one of the pioneers of the German coal-tar dye industry, has died at the age of sixty years. Tue death is announced of Dr. Isoji Ishiguro, the Japanese engineer. THERE will be a meeting of the Society of Plant Physiologists with the American Asso- ciation for the Advancement of Science at Salt Lake City from June 22 to 24. Papers to be presented before the physiological section should be mailed to E. T. Bartholomew, School of Tropical Agriculture, Riverside, California, before June 1. Owine to serious flood conditions of the Mis- sissippi River, the annual meeting of the Amer- ican Oil Chemists’ Society, which was to have been held at the Grunewald Hotel, New Or- leans, on May 8 and 9, has been postponed to June 5 and 6 at the same place. THE alumni members of Sigma Xi of South- ern California held a meeting on the evening of May 24, at the Norman Bridge Laboratory of Physies, Pasadena, California, and organ- ized the ‘Sigma Xi Club of Southern Califor- nia.” About fifty members, representing six- teen institutions, were present. The following officers were elected: Dr. W. L. Hardin, Los Angeles, president; Dr. Paul W. Merrill, Mt. Wilson Observatory, Pasadena, secretary; Dr. E. E. Chandler, Occidental College, treasurer. There are more than a hundred alumni mem- bers of Sigma Xi in Los Angeles, Pasadena, and near-by towns. Tue British Institute of Physics, of which Sir J. J. Thomson is president, has arranged for the delivery of a course of public lectures with the view of indicating the growing im- portance and place which physics now holds in industry and manufacture. The first of these lectures was delivered by Professor A. Barr of May 19, 1922] Glasgow, on April 26, in the Hall of the Insti- tution of Civil Engineers. Av a meeting of the advisory council of the Phipps Institute, Philadelphia, April 29, gifts totaling $150,000 were announced. The sum of $25,000 will be given yearly for five years by the Carnegie Corporation, for research pur- poses. Dr. Josiah H. Penniman, acting pro- vost of the University of Pennsylvania, stated that the board of: trustees had voted $25,000 to be given during the next two years to the insti- tute. The family of Henry Phipps announced that they pledged $500,000 to the endowment fund, provided an additional $2,500,000 be raised. Tue fund for the establishment of the Har- vard School of Public Health will be entitled the Henry Pickering Walcott Fund in honor of the senior member of the Harvard Corpora- tion. As has already been announced, the Rockefeller Foundation has agreed to con- tribute at once $1,500,000 and eventually $500,000 in addition; these amounts will be inereased by a fund of $1,000,000 provided by the university and also by the income of more than $3,000,000 which is now being expended by the university in various departments which will be incorporated in the school. It will prob- ably open next year for instruction and research in the field of public health. It will be closely allied to the Harvard Medical School, and Dr. David L. Edsall will serve as dean of both schools. Certain departments now organ- ized under the Medical School, such as those of industrial hygiene and tropical medicine, will become part of the new school, which will also develop and enlarge the work of the School of Public Health now jointly conducted by Harvard and the Massachusetts Institute of Technology. Tue Board of Research Studies of the Uni- versity of Cambridge, in a report on the ad- mission of research students, records that steps have been taken to concentrate in the board the power of admission of research students, and it is hoped that this will tend towards the preservation of a uniform standard of quali- fication. Secondly, they record that it has been decided to institute the degrees of M.Litt. SCIENCE 937 and M.Se. The regulations for these degrees appear in the current number of the Reporter. The number of research students admitted when the last report was presented was 72. Since then 71 have been admitted, making in all 143. These figures, however, hardly repre- sent the comparative number of admissions this year and last, for at the beginning many already at work under the old regulations for the B.A. degree were permitted to transfer. During the year two students withdrew their names. The proportion of Cambridge gradu- ates among the students now admitted has risen. The large number of graduates of other universities within the British Isles remains a feature. Those from Canada and the United States are fewer than may be anticipated when the degree is better known, their combined number—25—hbeing approximately that of those coming from the Indian Empire. Tue British Board of Trade has issued an order exempting certain German scientific and other periodicals from the provisions of the German Reparation Act of 1921. Any article is exempted “being a publication in the Ger- man language which is proved to the satisfac- tion of the commissioners of customs and excise to be a periodical publication of a German learned society, or other scientific or philosoph- ical periodical publication.” UNIVERSITY AND EDUCATIONAL NOTES Proressor Epwarp H. Rockwe.u, after twenty years of service on the faculty of the Engineering School at Tufts College, has ae- cepted a call to Rutgers College to be dean of the Engineering School. ANNOUNCEMENT is made by the Rensselaer Polytechnic Institute that Professor Edwin A. Fessenden, of Pennsylvania State College, will become, at the beginning of the next collegiate year, professor and head of its department of mechanical engineering. Prorrssor Hersert R. Moopy, for seventeen years connected with the department of chem- istry of the College of the City of New York as professor of industrial chemistry and chem- ical engineering, has been appointed director 538 of the department to fill the vacancy caused : by the death of the late Professor Charles Baskerville. Dr. Grorce Dock has resigned his position as professor of medicine at Washington Uni- versity Medical School, St. Louis. At Columbia University, Dr. James P. Southall, physies, and Dr. James Kendall, chemistry, have been promoted to professor- ships. Dr. Robert H. Bowen, zoology, Dr. Roy J. Colony, geology, Dr. John A. North- cott, mathematics, and Dr. Hugh Findlay, agri- culture, have been promoted to assistant pro- fessorships. PRoMOTIONS in psychology and educational psychology at Columbia University are an- nounced as follows: At Barnard College, Dr. H. L. Hollingworth to a full professorship; at Columbia University, Dr. A. T. Poffenberger to an associate professorship; at Teachers College, Dr. Arthur I. Gates, Dr. William A. MeCall and Dr. Leta 8. Hollingworth to asso- ciate professorships. Dr. Epwix G. Borine and Dr. Herbert S8. Langfeld have been appointed: associate pro- fessors of psychology at Harvard University. Dr. Boring has since 1919 been professor of experimental psychology at Clark University. Dr. Langfeld has been promoted from an as- sistant professorship. DISCUSSION AND CORRESPOND- ENCE DECEREBRATION IN BIRDS THE recent observations of Shakleet on decerebrate pigeons serve to emphasize some features of the physiology of the central ner- vous system of special interest to workers in this line. The long period of survival—near- ly twelye months—and the new features of decerebrate behavior recorded, again call atten- tion to the possibilities of this method of ex- perimentation as well as to some of the dangers of its interpretation. The positive result of the return of the drinking reaction, not hitherto obtained in 1Am, Journ. Physiol., Vol. lv, p. 65, 1921. SCIENCE [Vou. LV, No. 1429 similar work, points to a greater flexibility in the neural mechanism than we have usually ascribed to it and falls into line with some of the newer conceptions that have been gain- ing foothold in the field of brain function. Whatever interpretation of the results may be made regarding the process by which such restoration of function 1s accomplished, every- one must be impressed by its extent and adap- tative importance. The differences between the present work and the results of Martin and Rich? to which Shaklee refers deserve a word of comment. Aside from the difference in species used, which may or may not have influenced the results, it should be emphasized that Martin and Rich operated on newly hatched chicks, thus excluding the influence of individual habit or experience prior to decerebration, while Shaklee used adult pigeons. Another factor is the distinctly longer period of sur- vival in the pigeons. The highly speculative interpretation placed upon these very interesting results may be passed over with the exception of one or two points. It seems surprising that, if the are upon which the drinking reaction depends is of the deeply ingrained type postulated, it did not show activity for 32 days. In con- sidering the feeding reaction the importance of tasté seems strangely overstressed. A hard grain in the tip of the beak could give rise to very little more taste than do the bits of gravel which are also normally swallowed by birds. The interpretation of work of this nature must be cautious. The facts of re-education (I use the term without implication as to the method by which restoration or substitution is accomplished) in man and animals show that many things can be done which are never normally done in the lives of the vast majority of the individuals or of their ancestors. As when storms damage telephone and telegraph lines, communication can be effectively estab- lished by routes never normally used, so in the nervous system possible and efficient ares and 2 Am. Journ. Physiol., Vol. xlvi, p. 396, 1918. May 19, 1922 pathways may exist which are never normally traversed. Only one explanation of the restoration of function is offered in the article under con- sideration, i. e., that the subcortical ares are the more primitive and are sufficiently retained in adult pigeons after decerebration to make possible the carrying out of normal drinking reactions. Another explanation is also possible. Many writers have claimed that certain habits, aris- ing in the first instance through activities involving the cortex, later are passed on com- pletely to subcortical centers. As Herrick® points out, these acquired automatisms may so closely resemble inherited reflexes as to be indistinguishable in the absence of the history of their development. If it is here assumed that the drinking reaction established during the life of the pigeon is transferred in large part to subcortical structures, its retention after decerebration would seem to be expected, while in the case of the chick, decerebrated be- fore such reactions were built up, no such ap- pearance could be looked for. It might also be argued that the feeding reaction, being more complicated, was not so completely transferred from the cortical region as to be effective after decerebration. That such an assumption may be justified is indicated by the work of Franz and Lashley‘, who found from numerous careful experiments with white rats that extensive cortical lesions did not usually affect the retention of most habits due to previous training, nor did they prevent the formation of new habits. The authors also report that in the cat and monkey where the frontal portion of the cortex is normally utilized in the formation of certain habits, these habits, if long practiced, are still carried out in the ordinary way after the abla- tion of the frontal cortex. This work as well as. its continuation by Lashley® clearly shows that the classical picture of the decerebrate animal is in large measure erroneous and must be carefully revised and with it the entire con- ception of the physiology of the central nerv- 8 Introduction to Neurology, 2d ed., p. 336. 4 Psychobiology, Vol. 1, p. 71, 1917. 5 Psychobiology, Vol. 2, p. 55, 1920. SCIENCE 539 ous system. Any contribution to this promis- ing and important field is to be welcomed. Frank W. WEYMOUTH STANFORD UNIVERSITY, CALIFORNIA THE BITE OF LACTRODECTUS MACTANS In Science for January 13, F. R. Welsh writes on “Poisonous Spiders.” In regard to the “Black Widow,” Lactrodectus mactans, he quotes Dr. McCook as of the opinion that the bite of this spider is “in most instances of small consequence.” During the past two years the writer has had ealled to his attention four cases of attacks by this spider on human beings. These were all reported by practising physicians who sent in the spiders for identification. All four cases were those of men who were bitten on the penis while using outside closets. In every case the results were of a very serious nature. The patients suffered intense pain ac- companied by severe abdominal disturbances, convulsions and delirium. In one ease the ab- dominal pain was so intense and pronounced that the patient who had been sent to a hos- pital in a distant city was, upon arrival, promptly operated upon for appendicitis. The severe symptoms lasted from twenty-four hours in one man to over a week in the case of another. In a third ease the physician reported four days after the patient had been bitten that he was “not yet out of danger.” However all ultimately recovered. Two of these men were bitten the same day in the same closet and presumably by the same spider, indicating that the spider does not exhaust her venom by one bite. These experiences would indicate that the bite of this species, at least when administered in a tender, part of the body, is very serious, exceedingly painful, and even dangerous. J. R. Watson UNIVERSITY OF FLORIDA WATER-IMMERSION OBJECTIVES I wis to eall the attention of those biologists who use the microscope to the value of the much neglected water-immersion objective. Its inferiority to the oil-immersion in the matter of numerical aperture, and consequently in power of resolution, has led. many microscop- 040 ists to lose sight of its peculiar advantages for certain kinds of work. The lower angular aperture obtainable with water contact as com- pared with cedar oil, is compensated for in several ways: first, it gives a longer working distance, due to the necessarily narrower angle of illumination,—a very important thing in high magnification. Second, it gives corre- spondingly better penetration of the object ex- amined. Third, there is the ease with which both the slide (7. e., the object) and the ob- jective are cleaned. ( dg 2 m 2m at raat a r approximately, which (11) 1G) =m dg 12 = Co) es ds then w may be interpreted as the angular ve- locity of the planet about the sun. Then from (5), (11) and (12) we have that (13) The attraction = 1 m n(= + 3?) ==) (Li 302) r2 r2 where v is the component of the velocity per- pendicular to the radius vector. We have remarked in the preceding that the velocity of light at oc is equal to 1 in the units 572 chosen. If we denote it by ¢ in any system of units, we may formulate the law as follows: Two bodies attract one another inversely as the square of their distance and directly as the product of their masses and (1 + 3v°/c?), where v is the component of their relative ve- locity perpendicular to the line joining the bodies. The form (1) is obtained from the Einstein theory on the hypothesis that the planet is small in comparison with the sun. It may be that the above law applies only to this case. However, it may be that the law would work if the bodies were approximately of the same mass. As formulated the law enables one to set up the differential equations of » bodies in a manner analogous to the classical theory. It would be interesting to know whether known discrepancies in the motion of the moon would be overcome by the use of this law. Although the term 3v7/c? produces an ob- servable effect only in the ease of Mercury, it may produce a significant effect in molecular motion. 4. When in like manner equation (7) is com- pared with (9) we find that for a ray of light the attraction is (14) 3mw" where w may be interpreted as the angular velocity of the light about the sun. Thus it is the term 3mo* in (13) which accounts for the deflection of light, and the term m/r? does not enter. Einstein and his followers have cal- culated the deviation of light by noting that the velocity changes in a manner analogous to that of a refracting medium, and by applying Huygen’s principle. Since the same term ap- pears in the attraction of a planet, it may very well be that the sun affects the medium through which both the light and planets pass, and that the difference between Newton’s law and (13) is due to this situation. From ‘this point of view one would expect that the law 1T have just found that A. V. Backlund in the Arkiv for Matematik, Astronomioch Fysik, Vols. 14 and 15 (just received) has made an extensive study of the relation between classical dynamics and the Einstein theory of gravitation. In the course of his three articles he obtains equation (11) and one similar to (13). SCIENCE [Vou. LV, No. 1430 would not be accurate for two or more bodies of relatively the same mass, but it may lead to a sufficiently close approximation. LutTHER PFAHLER HISENHART PRINCETON UNIVERSITY THE AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE SECTION F—ZOOLOGICAL SCIENCES AND ASSOCIATED SOCIETIES Ar the Toronto meeting of the American Association for the Advancement of Science, December 27-31, 1921, Section F (Zoology) offered no separate program, but met jointly with the American Society of Zoologists. The program was arranged by the latter society. Six joint sessions were held, the program including 101 titles distributed by subject as follows: embryology, 4; cytology, 8; compara- tive anatomy, 7; evolution and genetics, 24; ecology and zoogeography (with the Ecological Society of America), 13; general zoology, 2; protozoology, 2; parasitology, 22; comparative and general physiology, 17; unclassified, 2. The session of Friday afternoon, December 30, was devoted to a symposium on ortho- genesis. A biologists’ smoker was held Wednes- day evening, December 28, and the zoologists’ dinner Friday evening, December 30. The business meeting of Section F' took place at the morning session on December 29, with Vice-president Kofoid acting as chairman. M. M. Metealf is vice-president for Section F for 1922. J. A. Detlefsen was elected a mem- ber of the section committee for four years in place of the retiring member, A. M. Reese. F. R. Lille presented the following resolu- tions drawn up by a conference of representa- tives of the biological societies in regard to a proposed federation of biological societies: RESOLVED: 1. That it is the sense of this con- ference that an inter-society conference should be called to study and report upon the feasibility of federation of the biological societies and to develop plans for the said federation. 2. That for the purpose of effecting such an organization, each society, and Sections F and G of the American Association for the Advance- ment of Science, be requested to designate its president and secretary as members of an inter- May 26, 1922] society council which shall be authorized (1) to deal with all matters of common interest, such as pooling of programs, that are consistent with the existing regulations of the constituent societies, and (2) to draw up proposals for a constitution and by-laws of a federation of the societies in question, and to present them for action at the next annual meeting. The Section voted that the resolutions of the conference be adopted. Independent programs were arranged by the following societies affiliated with Section F— The Entomological Society of America, The American Association of Economie Entomolo- gists; and by the following societies affiliated with Sections F and G jointly—The American Society of Naturalists, The Ecological Society of America, The American Microscopical So- ciety (business meeting only), The American Nature-Study Society. Herbert W. Rann, Secretary, Section F SECTION G—BOTANICAL SCIENCES AND ASSOCIATED SOCIETIES Section G held its session on Wednesday afternoon, December 28, 1921, in conjunction with the Botanical Society of America and the American Phytopathological Society. There was a large attendance at this meeting, and the symposium, though involving several papers, was not unduly long. Professor Rodney H. True, retiring vice-president for Section G, delivered his address on “The physiological significance of caleium for higher green plants,” which has been published in Science, Vol. LV, p. 1, January 6, 1922. The vice-presidential address was followed by a symposium on “The Species Concept,” at which the following papers were read: (1) “From the viewpoint of the systematist,”’ Charles F. Millspaugh; (2) “From the viewpoint of the geneticist,” George H. Shull; (3) “From the viewpoint of the morphologist,’ R. A. Harper; (4) “From the viewpoint of the bacteriologist and physi- ologist,” Guilford B. Reed; (5) “From the viewpoint of the pathologist,” E. C. Stakman. The writers of these papers cooperated splen- didly, both in division of subject matter and in time of presentation. The results seem to confirm the expressed belief of many botanists SCIENCE 573 that a symposium of general interest, making appeal to workers in all the principal fields, is well worth while. At the business session of Section G, John T. Buchholz, of the University of Arkansas, was elected to be a member of the section com- mittee, his term of office to end January 1, 1926. Professor F. E. Lloyd of MeGill Uni- versity, was selected as vice-president for See- tion G for 1922. Botanical Society of America.—tThis society held sessions beginning Wednesday morning, December 28, 1921, and continuing through Friday. On Thursday afternoon the Myco- logical Section held a joint session with the American Phytopathological Society, and on Thursday afternoon the Physiological Section met in conjunction with the American Society for Horticultural Science and the Ecological Society of America. At the sessions of the Botanical Society of America, eighty-seven scientific contributions were read. The dinner for all botanists was held on Friday evening. After the dinner Dr. Marshall Howe read “A Communieation from the Retiring Vice-presi- dent,’ Dr. N. L. Britton. American Phytopathological Society.—Ses- sions of this society were begun on Wednes- day morning, December 28, and continued until Saturday morning. At the business ses- sions of this society the following officers were elected: President, E. C. Stakman, University of Minnesota, St. Paul, Minn.; vice-president, N. J. Giddings, University of West Virginia, Morgantown, W. Va.; secretary and treasurer, G. R. Lyman, Bureau of Plant Industry, Washington, D. C. One hundred and seven scientific contributions were read during the sessions. The Phytopathologists’ dinner was held on Thursday evening, the dinner being followed by a diseussion of important topies, and a short business session. Board of Control of Botanical Abstracts.— Business meetings of the Board of Control were held on Tuesday, Wednesday and Thurs- day. During these meetings various matters were given attention including the election of editors and various considerations in connec- tion with the publication, financial support, and cireulation of Botanical Abstracts. 574 The Toronto meeting, from the viewpoint of the botanists, was a very successful gathering, and the attendance of plant workers was greater than had been anticipated. Rosert B. WYtts, Secretary SECTION I—PSYCHOLOGY THE meeting of Section I (Psychology) at Toronto was a very successful one. Although the affiliated society was meeting elsewhere, a considerable number of American psychologists attended the sessions, and to these were added several Canadian psychologists and a good many professional men and women who are interested in psychology from the point of view of its practical applications to education, business, criminology and related fields. The program was enriched by contributions from a number of men who represented these inter- ests. The discussion of the papers was lively and in some sessions had to be limited for lack of time. The attendance at the meetings aver- aged about 25 and reached 125 at one session. As is usual, there was at the Toronto meet- ing an intimate relation between the sessions of Sections I and Q (Education). Sessions were held conveniently in the same building, and two were joint sessions. The papers in these sessions dealt with mental tests or with psychological studies in education. There was apparent in the discussions of mental tests a disposition to examine somewhat more critically the conclusions to be drawn from the results of mental tests than has prevailed in the past. Of the other papers special mention may be made of one by Professor Thorndike in which he distinguished two types of equation—the equation for solution and the equation which expresses relationship—and advised that spe- cial care be taken to avoid confusion between the two. The first session was devoted to general papers. Professor Dale discussed the place of psychology in university curricula, emphasiz- ing the need of giving it reality by relating it to the practical problems of life. Professors Brett and Pillsbury discussed a number of the important issues on which modern psycholo- gists differ, and Professor Weiss discussed SCIENCE [Von. LV, No. 1430 variability in behavior as a basis of social interaction. One morning session was devoted to applied psychology. The problems in this field were discussed from the point of view of employ- ment relations, of job analysis, and of dealing with the handicapped in occupation, by Mr. George W. Allen, Professor EH. K. Strong, Jr., and Mr. Norman L. Burnett, respectively. Dr. Alfred E. Lavell, chief parole officer of On- tario, described the beneficial effects of super- vised employment upon paroled prisoners. The last session opened with two general papers on mental tests and their significance. Professor William D. Tait argued that educa- tion should be highly selective and adapted to intellectual capacity. Dr. R. M. Yerkes em- phasized the need of other types of mental examination in addition to intelligence tests. The results of psychiatric and _ intellectual examination of Illinois prisoners were pre- sented by Dr. Herman M. Adler. In agree- ment with the results of an Ohio study, his examination showed that prisoners are not a select group intellectually. He indicated, how- ever, that they do exhibit anomalies of behavior. Psychiatry in the publie schools was discussed by Dr. Eric K. Clarke. The full address will appear in the Philadel- phia Public Ledger for Sunday, June 11. SCIENCE [Vou. LV, No. 1432 tion. When other features of plant growth were investigated some effects of cultivation, other than moisture, were brought out. The recent controversy between Dr. Jerome Alexander and Mr. L. 8S. Frierson in the Sep- tember 2, 1921, the February 10 and March 24, 1922, issues of Science has been interesting. One of these writers accepts the general view that cultivation of the surface of the soil con- serves soil moisture by preventing surface evap- oration, while the other does not believe that this is in accord with engineering experience. If our work had shown that, in cultivation, we were dealing with a moisture factor alone, the writer might agree with one of these two men without into the speecifie conditions under which the data were obtained. Our work has shown that cultivation changes the com- position of the soil solution and has an effect on the water requirements of the plants grown. going The Journal of Industrial and Engineering Chemistry for March, 1922, Vol. 14, No. 3, has-the following in an article by the writer in discussing a composition basis for the water requirements of plants: “There is a common saying, cultivate to conserve soil moisture and you will have larger crops. The author be- lieves that cultivation lets air down into the soil, thereby increasing bacterial activities which in turn cause the plants to get more food and grow larger on less moisture, would be nearer the truth. Experiments are reported where fertilization has decreased the. water requirements of plants over one half, when expressed as the amount of water necessary to produce one unit weight of plant. In the field experiments we had plants grow- ing well, with cultivation, when on the same soil without cultivation, lack of water in the soil was hindering plant growth. It was easy to say that these were the results of cultivation in conserving soil moisture but to find out how the mulch conserved the soil moisture was a problem for intensive study. The evident facts were that the well cultivated crops were not suffering from lack of water in the period of dry weather. It was found that the soil having the water reserve had a higher concentration of plant food and the plants growing in this soil con- JUNE 9, 1922] tained larger quantities of the plant food elements. Plants of the same species are known to vary in analysis and plants of dif- ferent analyses in our experiments were found to have different water requirements. It ap- pears that if the soil solution is weak the plant transpires more water in its attempt to make a normal growth. The larger number of stomata on the leaves of plants with high water re- quirements substantiate this. The results of cultivation are a different plant growing in a different soil and requiring less water per unit of weight. In the spring the soils of the humid regions of the United States contain plenty of water and it is general observation that the results of cultivation (higher moisture in the, soil) do not show up until periods of dry weather come. In the fall there is again plenty of water, under all systems of soil management. It is the author’s belief, based on experimental results, that proper cultivation throughout the season will allow the plants growing on good soils to make their growth on enough less mois- ture (early in the season) so that they can keep on growing during periods of dry weather on what may be called an aceumula- tive moisture reserve. The summary of the water requirement paper in the Industrial Journal follows: The results of field and greenhouse experimeuts recorded in the following paper indicate that fer- tilization of a soil which responds to direct or indirect fertilizer treatment allows the plants to make their growth on a smaller amount of water and to have a different composition from what they otherwise would. The same effect is produced by cultivation, which by opening up the soil increases bacterial activity, which in turn gives increased concentra- tion of the soil solution. Proper fertilization and cultivation minimize dangers to crops from drought injury in humid regions of the United States by having the plant go into the drought period with an accumulative reserve of soil moisture. This work opens up the study of fertilization _from the basis of water requirement. H. A. Noyes MELLON INSTITUTE OF INDUSTRIAL RESEARCH SCIENCE 611 THE COPPER ESKIMOS I RETURNED in the autumn of 1921 from six consecutive years in the arctic regions. Three of these were spent for purposes of geographie and ethnographic study among the Copper Es- kimos. I am now engaged upon writing up the results of that investigation, but, as there is no prospect of getting this printed before at least one year, I want to make a preliminary an- nouncement about certain results of my archeo- logical and ethnological work. Previous to 1912, the eastern known limit of pottery among the Eskimos was Point Barrow (cf. Murdock on the Point Barrow Eskimos). Stefansson’s work of the years 1908-12 ex- tended the known pottery area eastward some six or seven hundred miles to Cape Parry, and he found it there in the most ancient ruins, indicating that pottery has been used by the Eskimos for centuries and perhaps by the ear- liest Eskimos who occupied that country. Jenness has published the results of his two years spent among the Copper Eskimos (Re- port of the Canadian Arctic Expedition, 1913- 1918, -Vol. XII, published by the Department of the Naval Service, Ottawa). In this he does not mention pottery, which would indicate that he found none to the east of Cape Parry. In excavating various sites I have found pottery fragments as far east as Point Agiak, just west of Gray’s Bay, or about 80 miles east of the Coppermine. This extends the known pottery territory some 400 miles east beyond Stefans- son’s results. Like Stefansson, I found the pottery deep down, indicating that it had been in use probably several centuries ago and per- haps by the earliest Eskimos. The implements associated with the pottery were of undoubted Eskimo type. Previous to 1910 houses of earth and wood had not been reported from the western arctic coast of Canada further east than Pierce Point. Stefansson in his journeys along the coast the spring of 1910 and again the summer of 1911 found the ruins of earth and wood houses as far east as one/mile east of Crocker River. In an appendix to Jenness’ report (cited above) we learn that since his return in 1916 Captain Joseph Bernard, who entered the Copper Es- 612 kimo country only a few months after Stefans- son in 1910 (see My Life with the Eskimo, by V. Stefansson, p. 258) has reported finding the ruins of houses made of earth and wood on southwestern Victoria Island. Jenness concludes that this is a sporadic occurrence and attributes it to a visit from the western Eskimos. Thus Jenness evidently assumes that the people from whom the present Copper Eskimos are de- scended never had wooden houses. In 1919 A. H. Anderson found earth and wood houses on Cape Krusenstern and at vari- ous places in Coronation Gulf. Lastly, I have (during the years of 1917-1921) found ruins of the type of earth and wood houses used in Alaska and the Mackenzie River at intervals along the shores of Coronation Gulf to the above-mentioned Point Agiak. I also have ac- eurate Hskimo information about the location of a village of the same type on the coast of Melville Sound due south of Kent Peninsula. Thus we find houses of wood and earth as far east as West Longitude 107°. For reasons which I cannot go into here, I consider it likely that future investigations will show a continua- tion of this chain of ancient earth and wood dwellings most if not all the way to Atlantic and Hudson Bay waters. As it seems to differ from that of some other investigators, I want to record here the opinion (based on my studies in Coronation Gulf) that the present Copper Eskimos, who have no. pot- tery and use no wooden houses, are in the main at least descendants of the earlier inhabitants who used pottery and wooden houses. My view is that the present culture (characterized in part by stone pots instead of pottery, and snowhouses instead of wooden houses) has been gradually evolved partly because the previous culture was never as well suited to the local conditions as the present, and partly because the local conditions have changed somewhat. One important feature of the change has been the lessening importance and eventual abandon- ment of whaling. My work shows that whaling was formerly practiced in certain parts at least of the Copper Eskimo country. Harotp Norce Tum EXPLORERS CLUB, New York Ciry SCIENCE [Vou. LV, No. 1432 SCIENTIFIC EVENTS THE BRITISH INSTITUTE OF PHYSICS At the annual general meeting of the British Institute of Physics, held on May 23 in the rooms of The Royal Society, the following officers and board were elected to serve for the year beginning October 1, 1922: President, Sir J. J. Thomson; past president, Sir R. T. Glazebrook; vice-presidents, Sir Charles Par- sons, Professor W. Eecles, Professor C. H. Lees, Mr. C. C. Paterson; non-official members of the board, Dr. R. 8. Clay, Professor C. L. Forteseue, Professor A. Gray, Major E. O. Henrici, Sir J. E. Petavel, Dr. E. H. Rayner, Sir Napier Shaw, Mr. R. 8. Whipple; repre- sentatives of participating societies—Physical Society, Mr. C. E. Phillips, Mr. F. E. Smith; Faraday Society, Mr. W. R. Cooper; Optical Society, Mr. John Guild; Rontgen Society, Dr. G. W. C. Kaye; Royal Microscopical Society, Mr. J. E. Barnard. The annual report stated that there were 408 members of the institute at the end of the year, of whom 258 were fellows. The institute is watching the possibility of establishing a central library for physics, although the financial difficulties in the way of its realization are stated to be considerable. In the course of his presidential address Sir J. J. Thomson, after dealing with the project to establish a Journal of Scientific Instruments, spoke of the present depression in industry, but he made the reassuring statement that out of 67 students who graduated with distinction in physies and chemistry in 1921, 46 had ob- tained suitable positions, while 14 were doing research work. He hoped that the series of lectures on physies in industry which had been established would act to some extent as “re- fresher courses.” Speaking of the difficulties which the safe- guarding of industries act had, in many instances, placed in the way of research, he characterized research itself as a “key indus- try’ and he hoped that the government would put every facility in the way of research workers being able to obtain without delay the apparatus they required. JUNE $, 1922] THE RADIO SERVICE OF THE UNIVERSITY OF WISCONSIN EXTENSIVE new radiophone broadcasting services were started by Station WHA, Univer- sity of Wisconsin, on Monday, May 29, to be continued throughout the summer and until further notice. Noonday radio broadeasts, consisting of five- or ten-minute talks, will be sent at 1:05 p.m. five days each week. These talks will be by members of the university faculty and in many eases will be delivered in person. They will be on subjects of general interest and will enable the public to hear university men talking on subjects on which they are authorities. A Tuesday night university radiophone lec- ture course was started on May 30. At 8 o’clock every Tuesday night a university pro- fessor will broadcast a twenty-minute lecture on a subject of general interest. The first lec- ture was a Memorial Day address delivered by Professor W. F. Lorenz, major in the Thirty- second Division, now actively associated with the rehabilitation of disabled soldiers. These new broadcasting services will not affect the present services of University Sta- tion WHA. It will continue the Friday night musical appreciation course and radiophone news service of the University Press Bureau, as well as the daily market and weather reports and services for amateurs. The schedules of each week in the new lee- ture courses will be sent to the newspapers in advance. The program of the first week was as follows: 1:05 Monday, May 29—‘‘The Spirit,’’ by Professor E. H. Gardner. 1:05 Tuesday, May 30—An address by Presi- dent E. A. Birge. 8:00 Tuesday, May 30—Memorial Day address by Major Lorenz. 1:05 Wednesday, May 31—‘‘The Clinie,’’ by Dr. J. S. Evans, director. 1:05 Thursday, June 1—‘‘Spring Sports’’ by a member of university athletic department. 1:05 Friday, June 2—Readings by Dean F. W. Roe, of the English department. Wisconsin Medical SCIENTIFIC EXHIBIT AT THE MEETING OF THE AMERICAN MEDICAL ASSOCIATION THE Journal of the American Medical Asso- eiation states that this year the exhibit exceeded SCIENCE 613 expectations in the number of exhibitors, while the quality of the work shown was of a high order. The setting for the exhibit was much better than usual; the booths were of pleasing appearance, painted green with white trim- mings, and with overhanging plants. As has been customary, the exhibit was classified. The educational section included a number of ex- hibits of charitable or semi-public organizations. Probably the pathologie section was the most interesting. Here one found such exhibits as that on pelykography (Dr. Reuben Peterson, University of Michigan); studies on ringworm fungi (Mr. Robert Hodges, University of Ala- bama); specimens of flagellate protozoa under well illuminated microscopes (Dr. Kenneth Lynch, Dallas, Texas); work on the bile factor in pancreatitis (Drs. F. C. Mann and A. S. Giordano, Mayo Clinic); pathologie specimens and comparative Roentgen ray rec- ords (Dr. Eugene Opie, St. Louis), and the excellent work on renal circulation (Depart- ment of Urology, University of California). The most striking exhibit in the surgical sec- tion was the display of plaster casts and com- parative photographs dealing with facial sur- gery; one half of the exhibit was devoted to civilian work, the other half to war reconstrue- tion (Dr. Vilray P. Blair, St. Louis). In the medical section the diagnosis of syphilis from the laboratory point of view was well presented (Dr. Loyd Thompson, Hot Springs, Ark.) ; in another booth was an interesting exhibit of pigeons illustrating vestibular tremors (Dr. C. lL. Woolsey, Boston). In addition to the foregoing were a large number of electrocardio- graphic exhibits. The total number of ex- hibitions was 48, thus divided: educational, 12; pathologic, 10; surgical, 6; medical, 6; electro- cardiographic, 14. On the stage of the audi- torium the work of the various councils and the chemical laboratory of the American Medical Association was shown. The committee on awards, consisting of Drs. W. B. Cannon, George Dock and Louis B. Wilson, made the following recommendations: The Gold Medal to Drs. Frank Hinman, D. M. Morison, A. E. Belt and R. K. Lee-Brown, of the University of California Medical School, for a study of renal circulation. The Silver Medal to Mr. Robert A. Hodges, gross 614 University of Alabama, for a study of certain culture-medium characteristics of ringworm fungi. The Certificate of Merit to Dr. Vilray Papin Blair, St. Louis, for an exhibit of photographs and plaster casts showing various types of face restoration. The committee also desires to give honorable mention to the following exhibitors: : Dr. K. M. Lynch, Dallas, Texas, for a study of the cultivation and differentiation of flagellate protozoa. Drs. F. C. Mann and Alfred S. Giordano, Mayo Foundation, Rochester, Minn., for studies on the bile factor in pancreatitis. Dr. Eugene Opie, Washington University, St. Louis, for a comparison of Roentgen ray records and gross pathologic specimens. Miss Elizabeth Green, Barnes Hospital, St. Louis, for a demonstration of methods used in distributing books in hospitals. THE ROME MEETING OF THE INTERNA- TIONAL GEODETIC AND GEOPHYSICAL UNION Some 300 delegates and guests attended the meetings at Rome, May 2 to 10, of the Geo- physical’ Union and of the Astronomical Union. Every country belonging to the unions had sent one or more representatives. There were be- sides present representatives from other coun- tries (the neutrals during the late war), which have already joined the International Research Council and are making preparations to join one or more of the unions. The delegates from the United States for geodesy and geophysics were: Bowie, Bauer, Kimball, Littlehales Reid and Washington. All of the sections re- ported well-attended, successful and stimulating meetings. Among the special social features, abun- dantly provided for by the Italian National Committee, were the following: May 2, 3 p.m.—Inaugural ceremony at the Campidoglio, at which H.M. the King of Italy was present. May 4, 9 p.m.—Reception of the delegates at the Campidoglio by the municipality of Rome. May 8, 3 p.m.—Visit to the Palatino at the invi- tation of the under-secretary of antiquities and fine arts. May 10, 1 p.m.—Visit to the Vatican and audi- ence with the Pope. SCIENCE [Vou. LV, No. 1432 After the meetings, various special trips were arranged for. Thus on May 12 visiting delegates were entertained by the municipality of Florence. The Sections of Seismology and Volcanology were definitely organized, as well as a new sec- tion of Scientifie Hydrology. Professor C. Lallemand was reelected presi- dent of the union for two terms. The next meeting of the union will be at Madrid in 1924. Louis A. BAvER SCIENTIFIC NOTES AND NEWS Dr. W. W. Campsett, director of the Lick Observatory, has been elected president of the International Astronomical Union in succession to M. Baillaud, director of the Paris Observa- tory. The Astronomical Union held its tri- ennial meeting in Rome in May and will hold its next meeting in Cambridge, England. Dr. Ray Lyman Witpver, president of Stan- ford University, has been elected president of the American Medical Association for the meet- ing to be held next year at San Francisco. Dr. Loutsre Pearce, of the Rockefeller Insti- tute for Medical Research, has been elected a corresponding member of the Société belge de Médécine tropicale of Brussels, Belgium. THe John Scott Medal of the Worcester Polytechnic Institute was awarded at the com- mencement exercises to Elwood Haynes, head of the Haynes Automobile Company, in recog- nition of his discoveries in certain forms of high speed steels. Mr. Gano Dunn, president of the J. G. White Engineering Corporation of New York, has been elected a member of the board of trustees of Barnard College, Columbia Univer- sity. Dr. F. Rossi, of the University of Bologna, has been awarded the Garibaldi Franco-Italian prize offered by the French Surgical Society for his work on “War Wounds of the Thorax.” Dr. BE. Perroncrro has reached the age limit and will retire from the chair of parasitology in the University of Turin. A celebration in his honor has been planned and subseriptions JUNE 9, 1922] will be received by the Perroncito Committee, via Nizza 52, Turin, Italy. Dr. Norman MacLeop Harris, of Dalhousie University, has been appointed chief of the division of medical research of the Canadian Dominion Department of Health. Sm Tuomas Henry Hotuanp, F.R.S., for- merly director of the Geological Survey of India and later professor of geology in Man- chester University, has accepted the invitation of ‘the governing body of the Imperial College “of Science and Technology, London, to be rector from September 1 next, in succession to Sir Alfred Keogh, who is rétiring under the age limit. Mr. D. D. BerouzHEIMeEr, assistant technical editor of the Chemical Engineering Catalog and co-author of the Condensed Chemical Diction- ary, has been appointed manager of the Infor- mation Bureau of The Chemical Catalog Co., Ine., and of that of the service department of The Journal of Industrial and Engineering Chemistry. Expert A. WILSON has resigned as director of the Pyralin Research Laboratory of the EK. I. DuPont de Nemours and Company to enter private practice as a consulting chemical engineer. Mr. Harry E. Rice has severed his connec- tion with the R. R. Donnelley and Sons Co., printers, of Chicago, where he has been em- ployed for several years in the capacity of chemist. He is now in charge of research and development work for the American Printing Company, also of Chicago. Tue following have been appointed as the official delegates of the United States to the International Chemical Conference at Lyons: C. L. Parsons, chairman; E. W. Washburn, vice-chairman and secretary; R. B. Moore, H. S. Washington, Edward §. Chapin and Ed- ward Bartow. Dr. Louis A. Bauer, after attending the meetings of the International Geodetic and Geophysical Union, sailed from Marseilles on May 19 for Australia, where he will inspect the Watheroo Magnetic Observatory of the De- partment of Terrestrial Magnetism. He ex- pects to visit the magnetic observatories in SCIENCE 615 New Zealand and Samoa, returning to Wash- ington early in September. Dr. Avcust Krocu, professor of compara- tive physiology at the University of Copen- hagen, who received the Nobel prize for medi- cine in 1920, will visit the United States in the autumn. Dr. LeonHARD STEJNEGER, of the U. S. Na- tional Museum, will spend the summer in the Commander Islands and other points of inter- est in and around Bering Sea. He expects to return in October. Dr. R. D. Ranps, for the past three years en- gaged in rubber disease research for the Dutch government at Buitenzorg, Java, has recently returned to this country and accepted an ap- pointment as pathologist in the Office of Cot- ton, Truck and Forage Crop Disease Investiga- tions, Bureau of Plant Industry. Dr. Rands will take charge of the department’s work on diseases of beans, with headquarters in Wash- ington. THE Journal of Industrial Chemistry and Engineering reports that on May 10, the Soci- ety of Industrial ‘and Mierographie Photog- raphy was organized at the Chemists’ Club in New York. A further meeting to discuss and ratify the constitution and by-laws will be held on June 14. In the interim the following serve as an executive committee charged with preparing the constitution: President, James McDowell, Sharp and Hamilton Manufacturing Company, Boston; secretary and _ treasurer, Thomas J. Keenan, editor of Paper, New York; vice-presidents, J. H. Graff, Brown Company, Berlin, N. H., Bennett Grotta, Atlas Powder Company. Av the annual meeting of the Congress of Physicians and Surgeons of North America, Dr. Frank Billings, Chicago, was elected presi- dent. Presidents of societies meeting with the congress were elected as follows: American Association of Pathologists and Bacteriologists, Dr. Paul A. Lewis, Philadelphia; American Climatological and Clinical Association, Dr. Charles W. Richardson, Washington; American Laryngologieal, Rhinological and Otological Society, Dr. Dunbar Roy, Atlanta, Ga.; Amer- ican Ophthalmological Society, Dr. Wilham H. Wilmer, Washington, D. C.; American Bron- 616 choscopie Society, Dr. Samuel Iglauer, Cin- cinnati. Proressok Lewetiys F. Barker, of the Johns Hopkins University, will give the annual address at the tenth annual meeting of the Eugenics Research Association to be held at Cold Spring Harbor on June 10. His subject is “Heredity and the endocrine glands.” Dr. Witt1am H. WetcH, director of the School of Hygiene and Public Health, Johns Hopkins University, gave the commencement address at Bryn Mawr College on June 8. Dr. FrepericK V. CoviLuE lectured before the Gamma Sigma Delta of Kansas State Agri- cultural College on April 26 on “The influence of cold in stimulating the growth of plants.” At Manhattan Dr. Coville spoke before the staff of the experiment station on “Acid tol- erant plants” and related topics. Proressor R. B. Moorn, of the Bureau: of Mines, delivered a public lecture on “The man- ufacture of helium by the government of the United States of America” at University Col- lege, London, on May 24. The chair was taken by Professor J. Norman Collie. Dr. Jacos G. Lipman, of the New Jersey Agricultural Experiment Station, who is now traveling in Europe, delivered two lectures in Paris recently, the first before the Académie @ Agriculture on the condition of agriculture in the United States, the other before the Société de Chimie Industrielle on the fertilizer industry in the United States. Dr. Grorce BE. pe ScHwEINI?z, retiring pres- ident of the American Medical Association, has accepted the invitation to deliver the Bowman Lecture in London, in 1923. THE medical profession and allied scientific bodies of Philadelphia are arranging for a cele- bration of he centenary of Pasteur’s birth on December 27. Emerson McMitrin, a New York banker, who took an active interest in scientific work, died on May 31, at the age of seventy-six years. JoHN AuLEN Wyetn, founder and for forty years professor of surgery in the New York SCIENCE [Vou. LV, No. 1432 Polyclinic, died of heart disease, on May 28, at the age of seventy-seven years. Ernest Sonvay, distinguished for his process for the manufacture of soda, died in Brussels on May 26, at the age of eighty-five years. M. Solvay made large gifts for scientific and educational purposes. Dr. René Benorr, former director of the International Bureau of Weights and Measures, corresponding member of the Academy of Sci- ence and of the Bureau of Longitudes, has died in Dijon at the age of 78. A MEETING was held in Toronto on April 28, of which the result was a resolution to form a Canadian Metrie Association. A temporary committee was formed to draft a constitution and inaugurate action toward more definite efforts to popularize the system for the benefit of science and industry. Tue Western Psychological Association an- nounces the postponement of its annual meet- ing, originally announced to be held at Salt Lake City on June 22 and 23. A meeting will probably be arranged at Stanford University later in the summer. Tur New England Intercollegiate Geological Excursion will have as its leader for the com- ing fall Dr. Ernst Antevs, who has been earry- ing on the work of Baron de Geer since the return of the latter to Sweden. Dr. Antevs will demonstrate the field methods used by him to obtain a record of the retreat of the ice since the glacial epoch. The excursions will be held on October 6 and 7, and the geologists will begin their investigations at Springfield, Massachusetts, following the Connecticut River northward. Tur twelfth season of the Laguna Marine Laboratory of Pomona College will begin on June 21 and will last six weeks. Besides gen- eral classes in general biology and marine zoology,ethere will be opportuniy for special investigators. Hight private laboratories are provided for individual work. Dr. W. A. Hil- ton will be in charge. Tue Division of Geology and Geography of the National Research Council has, been informed by Professor Emile de Martonne, of JUNE 9, 1922] the Sorbonne, Paris, that he has undertaken to direct the publication of a collection of photo- graphic albums of the French regions. About sixty albums of fifteen plates each are project- ed, each picture to be chosen by Professor de Martonne, and to have about four lines of descriptive text. A high-grade mechanical reproduction is contemplated. Each picture will be reproduced in the form of a lantern slide. The publisher is Baudiniére, 23 rue du Caire, Paris. UNIVERSITY AND EDUCATIONAL NOTES Dr. Howarp M. Raymonp has been appoint- ed president of the Armour Institute of Tech- nology, filling the office that was made vacant by the death of Dr. Frank W. Gunsaulus last year. Since the death of Dr. Gunsaulus, Dr. Raymond had been serving as acting president. He has been with the institute for twenty- seven years, and since 1903 he has been dean of engineering. ArtHuR J. Woop, professor of railway me- ehanical engineering, has been appointed to succeed Professor E. A. Fessenden as head of the department of mechanical engineering at the Pennsylvania State College. Professor Fessenden goes to the Rensselaer Polytechnic Institute. Dr. Watiace Craic, professor of philosophy and psychology in the University of Maine, has resigned. He will spend a half year in Great Britain and Germany. Dr. H. M. Halverson, of Clark University, has been appointed pro- fessor of psychology in the University of Maine. Dr. CarRott C. Prart, instructor in experi- mental psychology at Clark University, has been appointed instructor in psychology at Harvard University, where he will be asso- ciated in the laboratory with Dr. Langfeld and Dr. Boring. Dr. Floyd H. Allport, instructor in psychology at Harvard has been called to an associate professorship at the University of North Carolina. Associate Proressor Jacop O. Jones, of the department of mechanics at the University of Kansas, has been appointed associate pro- fessor of hydraulics in the College of Engineer- SCIENCE 617 ing and Architecture at the University of Min- nesota. Dr. E. P. CuurcHiut has been promoted from the position of assistant professor of zoology in the University of South Dakota to the professorship of zoology. DISCUSSION AND CORRESPOND- ENCE THE THERMEL In the early literature thermoelectric gener- ators were classified, regardless of use or char- acter, according to the number of their parts, into thermocouples and thermopiles. Some years ago, when it became clear that thermoelec- trie thermometers of widely differing complex- ity were going to be frequently used inter- changeably or in combination, it seemed desir- able to have a single not too lengthy name for them. The word ‘“thermoelement,”’ though not fully satisfactory, seemed to be the only word in use which would answer, and was accordingly proposed, in a paper from this laboratory, as a shorter synonym for thermoelectric thermom- eter. Its rather wide adoption indicates that the idea of a single short name for all ther- moelectric thermometers is generally welcome, but the somewhat equivocal term, thermoele- ment, has been the means of some confusion. Leading writers, even, have spoken of such things as “multiple thermo-couples,” “ihermo- couple elements,” “a multiple thermo-couple of four elements.” It therefore has seemed better to use the modified form “thermel.” Logically, this may be taken as an abbreviation either of “thermo- element,” or of “thermoelectric thermometer,” both now in use. It is a handier word, even, than “thermometer” itself, and has received considerable approval. Since there appears to be, unfortunately, no authoritative body to which new terms can be referred for acceptance or rejection, we in this laboratory are taking the responsibility of using thermel in our pub- lieations, and recommend its general use. A thermel, then, may be a single thermocouple, or a multiple thermel or thermopile, containing more than one couple. Its distinguishing characteristic lies in being used for temperature 618 measurement. The term “thermocouple” may, unmolested, preserve its original application to a single couple only. The term “multiple thermel” seems rather better than “thermopile” since it classes its object with other thermels or thermoelectric thermometers, whereas “ther- mopile” is more commonly associated with eur- rent generators, or with the special thermom- etry of radiation measurement. Water P. WHITE GEOPHYSICAL LABORATORY, CARNEGIE INSTITUTION OF WASHINGTON, SOLAR ENERGY “Creative Chemistry,” by Edwin E. Slosson, M.S., Ph.D. (The Century Company), is a most interesting account of the astonishing number of important practical uses, in industry and war, of applied chemical science. For the benefit, apparently, of readers who are not edu- cated chemists, or physicists, it makes occa- sional statements of pure science. One of these has the effect to revive the inquiry whether such statements ought not to refer to the observations or experiments on which they are based, unless readily available elsewhere. It reads: “Solidified Sunshine. All life and all that life accomplishes depend upon the supply of solar energy stored in the food.’’ This is, in substance, but a repetition from prior pub- licists, many of them distinguished. For example, Dr. Schuchert says: “Plants convert the kinetic energy of sunlight into the potential chemical energy of foodstuffs. Ani- mals convert the potential chemical energy of foodstuffs into the kinetic energy of locomo- tion.” And Dr. Soddy says: “Energy may sleep indefinitely .... In the potential form in coal, it has persisted for untold ages. Once released, heat is the sole ultimate product.” A quite extensive search has failed to find, in any literature, the account of an observation or experiment as leading to such conclusion. An elementary item of chemical teaching is that the sun’s rays convert (approximately) 44 weight units of the comparatively inactive gas, carbon dioxide, into 32 like units of the uni- versally active gas, oxygen, and 12 lke units of carbon, ultimately a solid possessing no SCIENCE [Vou. LV, No. 1432 readily perceptible activity and incapable even of combination without the application of ex- ternal heat. It is not easy for a non-specialist to believe, without evidence, that the energy of the sun’s rays which decomposed the 44 units of the dioxide, adhered to the 12 units of ear- bon, and perhaps fell asleep there, while no noticeable amount went into the activity of the 32 units of oxygen. Francis B. Danies SCIENTIFIC WORK IN RUSSIA ScreNTIFIC men may be interested in the following letter that I have received from Dr. Th. Fjeldstrup, of the Russian Museum at Petrograd: The effect the arrival of this letter will have produced on you is probably that of something dropping into your hands out of space. It is of no use speculating on the possible ideas you had as regards my fate, no more than on the picture you Americans have imagined to your- selves of the state of Russia’s home life to-day, since they are based on scraps of news, often defective, given in papers or obtained otherwise— our two worlds have been separated too long and too completely in their intellectual life to know much of each other. Often and often did I feel tempted to recom- mence correspondence with- you, but the prospect of being read a year or so after having written, if at all, cut short all attempts of the kind. I have better hopes now and therefore I permit myself to remind you of my existence and send you my best greetings. After -an absence of almost full four years (since end of February, 1918) I returned to Petrograd two months ago. Throughout this long period I have had various occupations, not always agreeable to my inclinations, but this was un- avoidable, nor could one expect to be allowed to The scene les beyond the Ural Mts. I do not intend to waste your time by giving a detailed description of my doings in the run of these years. I shall only dwell for a moment on some facts that might interest you. The summer of 1920 I spent as a member of a scientific research party sent out by the Univer- sity of Tomsk in the region that you paid a short visit to before joining me in Verchni-Udinsk, viz., the Minusinsk region. The city of Minusinsk and its museum I visited twice. The curator of the museum is a new man since you saw it, but the choose. JUNE 9, 1922] state in which the archeologic collections are is exactly the same, I suppose—no worse. Mr. Kozevnikoff (the curator) is a zoologist. Part of my time was dedicated to work among the natives (folklore and collections) and part to excavation of the Bronze age mounds (kurgans) under the directions of Professor 8S. Rudenko— Professor Volkov’s pupil and his successor at the University of Petrograd now. (By the way, I suppose you have heard that Volkov, Radloff, Princes Oukhtomsky—son and his father quite re- eently—are no more). Last summer we spent a couple of months with the Kirghiz of the Turgai region, ‘‘ taking stock,’’ so to say, of possibilities for work on a larger scale, if circumstances permit. Anthropometric measurements (800 individuals) and 2-3 Neolithic stations were among the results. Next spring and summer I may return to the Kirghiz—they are in my department at the Rus- sian Museum with which I am now scientifically connected. In spite of unfavorable conditions and difficul- ties scientific work in Russia has not ceased to progress, and scientists of all classes continue their field and home studies with all the energy they are capable of. There is one great privation of which we are acutely sensible, and that is— book famine. We are so thoroughly isolated that scarcely any literary news comes filtering through the frontier. The appearance of a copy of some comparatively fresh publication from the outside world becomes known immediately to the circles interested in its subject, is weleomed with joy and every one tries to get at the book and have it lent to him for a time; individual book, peri- odicals, pamphlets, all one. Without knowing what goes on elsewhere in science one feels like going about with plugs of cotton wool in one’s ears. Now, Professor Rudenko, with whom I am on very friendly terms, begs me to put a businesslike question to you in a quite unofficial way. During your stay in Petrograd in 1912, you spoke to Professor Volkov and Pr. Oukhtomsky of the desirability of establishing here a bureau for the exploration of the northeastern portions of Siberia by Russians with American cooperation. Having this idea of yours in mind, Rudenko, who is now the curator of the Siberian Department and is proposed to the post of director of the Russ Mu- seum,! would like to know whether you still think this project practicable, and if so would your or any 1 Formerly the Museum of Alexander III. SCIENCE. 619 other institution wish to participate in the realiza- tion of a series of expeditions to the Far East (Mongolia, the Amur region, Central Siberia) which would make it possessor of scientific re- sults and collections. The Russ Museum has a suffi- cient number of well qualified explorers. The question of fitting them out for the field may prove difficult in some respects; but such diffi- culties would be easily allayed if the work were planned on the principles of cooperation. Ars HrpuicKa U. 8. Nationa Muszum DOCTORATES IN AGRICULTURE In Science, Vol. LV, page 271, appears an article by Callie Hull and Clarence J. West on “Doctorates conferred in the sciences by American universities in 1921.” Three theses are listed for the subject of agriculture. There are in universities, generally, no departments of agriculture, but colleges of agriculture con- sisting of departments using methods of their own development and methods of the different sciences in studying agricultural problems. Students being trained for work in such de- partments are listed in the article mentioned as having done their work primarily in bacteri- ology, botany, chemistry and zoology, perhaps because the titles indicate that the methods of these sciences were used. The fact remains, however, that they were preparing to study agricultural problems. Thus, at Cornell Uni- versity alone, at least fifteen of the persons named under these four sciences were working in the College of Agriculture, preparing to study agricultural problems. And from the titles, I can be certain of at least four such men for other universities. If no names had been listed under the sub- ject of agriculture, no harm could have been done, but to list a subject of agriculture with only three names, it seems to me, might leave the impression that, with the great develop- ment of the agricultural colleges, there is very little tendeney for workers to secure the train- ing necessary to attack problems in an effective way. I believe that every one acquainted with the conditions in the colleges is convinced that there is a very hopeful development of gradu- ate work and that the number of young men who are securing sound training for effective 620 work in agricultural subjects gives promise of very sound and rapid growth in agricultural research. W. H. CHANDLER New York State COLLEGE OF AGRICULTURE THE WRITING OF POPULAR SCIENCE To tue Eprror or Science: The letters of Dr. Dorsey and Dr. Slosson, which have ap- peared in Science, raise questions that have perplexed both scientists and editors of popular scientific magazines. Neither Dr. Dorsey nor Dr. Slosson, in my opinion, has struck at the root of the matter. So long as the standards of American jour- nalism are what they are, it will be difficult to enlist the whole-hearted cooperation of scien- tifie men in popularizing the results of their researches. A distinguished biologist put the matter thus to me a few years ago: “We do not mind being popularized, but we do mind being made ridiculous!” And there we have the whole truth in a nut-shell. Consider these facts which have come under my notice: In the basement of the Bureau of Standards is an electric furnace used for conducting ex- periments at high temperatures. A Washing- ton reporter, in quest of good red journalistic meat, was permitted to see that furnace in operation. On the following day there ap- peared an article from his pen in a Washington newspaper under the title, “Bureau of Stand- ards Has Little Hell in Basement.” Is it any wonder that the men in the Bureau of Stand- ards look at him askance now? During the days when Halley’s comet was the subject of almost daily newspaper articles, about twenty Chicago reporters camped on the grounds of the Yerkes Observatory. Fearing complete misrepresentation of the work that they were doing, the members of the observa- tory staff granted no interviews. Finally, one ingenious reporter suggested that he be per- mitted to photograph the entire staff on the steps of the observatory. Inasmuch as all the reporters had been treated rather haughtily, it seemed as if this harmless request might be granted. Accordingly, the staff posed. Two days later, there appeared in a Chicago news- SCIENCE [Vou. LV, No. 1432 paper a photograph of one of the astronomers. —a distinguished telescopic observer—seated at the eye piece of the huge Yerkes refractor, but in a position outrageously absurd. His photo- graph had been cut out of that made on the observatory steps, pasted upon a lifeless pic- ture of the refractor, and the whole reproduced, with results that astonished every astronomical observer who saw the newspaper. The observa- tory staff was kept busy explaining to its col- leagues all over the country how this absurdity was perpetrated. Washington scientists surely have not for- gotten the great injustice done to Samuel P. Langley at the time when his historically im- portant experiments with his man-carrying air- plane were conducted. If ever a scientist’s life was embittered and shortened by gross news- paper misrepresentation, it was Langley’s. Our newspapers and magazines are right in demanding what they. call “human interest.” It is what science does for mankind that is inter- esting. The best popularizers of science have always been humanly interesting—particularly the men who have had theories to propound which were not readily accepted by their col- leagues. The campaign waged by Darwin and his col- leagues was a conspicuous example of sound popularization. But our newspapers and mag- azines ride human interest too hard. The one thing that seemed to strike our reporters about Einstein was the fact that he smoked a pipe and that his hair was disheveled. At the mo- ment, I do not recall more than two articles on Einstein in the newspapers that pointed out the tremendous practical significance of his theory of relativity—the fact that chemists, physicists, engineers and astronomers must henceforth reckon with time, space and motion in a new way. What Edison eats for breakfast seems to be of more importance than what Edison has actually achieved. So long as our newspapers publish simply gossip and the news of death and destruction, we have little to hope from them. If anyone were to write a history of the United States one hundred years hence, with no other information before him than that contained in current newspapers, he would inevitably draw the conclusion that Americans of our day led scandalous private lives and JUNE 9, 1922] were savagely addicted to killing one another. Curiously enough, only the advertisements would save him from presenting an utterly distorted picture of present day life and manners. Since these are the editorial standards of the day, is it any wonder that scientists hold aloof from the reporter? Is it any wonder that they do not wish to be made ridiculous? In Europe it is otherwise. I have never had any difficulty in securing whole-hearted co- operation from English, French and German scientists. They send their portraits on re- quest—something that American scientists hesi- tate to do. They write delightful scientific feuilletons, many of them models of simplicity and clarity. They recognize their journalistic obligation to the public at large. But when they come to this country, they soon learn the wisdom of withdrawing into their shells. The newspaper and magazine editor con- stantly uses the stock argument that he “gives the public what it wants.” But does he really know what the public wants? Would any magazine or newspaper editor have predicted that Wells’ Outlines of History or Van Loon’s Story of Mankind would have sold in editions of one hundred thousand and more? The Saturday Evening Post, with a cireula- tion of over two million, publishes articles on economies and industry which are, in the main, excellent examples of what the popularization of technical subjects should be. It has its standards of human interest, but it does not forget that the facts, simply, humanly, and interestingly presented are “what the public wants.” It is possible that the schools of journalism which have been established in various parts of the country may bring about a reformation of editorial standards through their graduates. Not much is hoped for from the publishers them- selves. WALDEMAR KAEMPFFERT Mr. Stosson’s indictment of American scien- tists, in your issue of May 5, for their failure to write interestingly and attractively about their work is all too true. As a teacher of English, I have observed the same failure throughout our universities. Among both fac- SCIENCE 621 - ulty and students an opinion prevails that there are but two general ways of writing: a so-called literary and polished style fit only for esthetes and poets; and a crude, inchoate style that marks the profound researcher and busy technician. The scientific man generally thinks that he hasn’t time to “polish” and “adorn” his sentences; therefore he slips into the slovenly jargon that he sees is customary among his colleagues. He fails to notice that there is a middle ground of simple, clear English that can be made interesting and attractive without his becoming a poet or an esthete. Mr. Slosson’s English is an example. Another example of a scientific man who taught himself to write excellent English was Pro- fessor John W. Draper, of New York Univer- sity. His volume of “Scientific Memoirs” is a model of clear, incisive prose. Professor Draper won the Rumford medals and was the first president of the American Chemical Society. But look at the accounts of. chemical research as published to-day, and see what they have become from the point of view of English or readableness. Look at the tire- some, too-modest statements, phrased in pas- sives and circumlocutions to avoid saying “I” or “me.” Pick a sentence at random and try to tell what it means without reading it several times. Such a style is supposed to indicate the scientific, objective researcher. The awk- ward sentences and confused transitions are supposed to connote the profound scholar intent on his specialty. The curious thing is that many chemists can write well if they choose. But when they begin to explain their work, they drop into professional jargon, which disguises their real ability. Such jargon is the custom. It makes all the articles alike, looks technical, dulls the interest, eliminates the per- sonal element, and discourages discussion. Mr. Slosson hints that he would like to see the great events in the history of science described in their proper dramatic significance. So should I, and if such descriptions could be included in a text-book on the history of science for use in colleges, it would be a great benefit to teachers. Pune B. McDonatp COLLEGE OF ENGINEERING, New York UNIVERSITY 622 To tHe Eprror or Scrmmnce: There is one point in Dr. Allen’s letter of April 28 that I think will bear further emphasis. As he points out, most editors will print sound scientific “stuff? which they ean get for nothing. But they won't pay a living wage to the man who writes it. I have been doing this sort of work, off and on, for a quarter century. In fact, for some years I actually supported myself—at about the clerical level. Those were the days when “the Old Man” edited McClure’s and cared more for the permanent repute of his magazine than for selling out any single issue. News- paper work paid decently. One could oceasion- ally make a short story of a scientific item. Even the women’s publications used to buy semi-scientific articles on diet and child train- ing. Now all this is past; I haven’t tried to sell anything since the war. It takes about as long to verify all the statements in one article as it does to write another. The verification is a labor of love, for which no editor will pay. The writer with an unhampered imagination can turn out stuff that the public prefers; and he can do twice as much of it ina day. My old market is absolutely dead. In the present day market, I can compete neither with the men who are selling their product, nor with those who are giving it away. Dr. Allen’s solution, I heartily agree, is for the moment the only practical one—though I doubt whether, in the long run, the public will get much good out of anything that it isn’t willing to pay for. Nevertheless, I cannot help thinking that the condition which Drs. Allen and Slosson:are trying to cure is only a symp- tom, not the real disease. For the fact is that the world just now is being simply drowned in a vast wave of superstition, that is bringing in every sort of pre-scientific opinion that the nineteenth century thought disposed of for good and all. My own town, for example, makes education its leading industry. But our public library has to buy books, just off the press, on palmistry, handwriting, character reading and fifty-seven other varieties of non- sense; while, significantly, it owns no old vol- umes on any such topies. Te current number SCIENCE [Vou. LV, No. 1432 of the Atlantic Monthly carries the advertise- ment of a professional astrologer! Here then lies the real trouble: The reading public does not know good science from bad; but if it did, it would certainly choose the bad. EK. T. BREWSTER ANDOVER, Mass. NOTES ON METEOROLOGY AND CLIMATOLOGY THE STREAMFLOW EXPERIMENT AT WAGON WHEEL GAP, COLORADO Stupents of hydrology have always had a keen interest in the relation of run-off to the forestation of watersheds, and there has been much theorizing as to the probable relation. But there are so many factors involved—evap- oration, transpiration, interception, ete., these, in turn, being influenced by the geological, phenological, and meteorological character of the watershed,—that it is difficult, if not im- possible, to estimate correctly the degree of influence of each. It has been the purpose of the Forest Service and the Weather Bureau to conduet an actual experiment in order to obtain quantitative measures of these influences and, in general, the response of streamflow to a forested and denuded watershed. The site selected for this large-scale experiment is near the railroad station of Wagon Wheel Gap, Colorado, the station having an elevation of 8,437 feet above sea-level. The plan was to select two contiguous watersheds of similar character, make extensive meteorological and hydrological observations on each, and, after the lapse of a certain number of years, denude one watershed of its trees and continue ob- servations for a sufficient number of years to determine in what manner the streamflow is influenced. On June 30, 1919, an eight-year continuous series of stream-flow observations and a nine- year meteorological record had been obtained, and, after a general survey of the results, it was decided that the trees could properly be removed from one watershed. The denudation was completed in the autumn of 1920. - This, therefore, marked the completion of the first stage of the experiment. Observations are being -continued, and will continue for several JUNE 9, 1922] years, but the report on the first stage has just been published.t. The Forest Service is repre- sented by Carlos G. Bates, silviculturist, and the Weather Bureau by Professor A. J. Henry, meteorologist, the reports representing joint authorship. While an effort was made to select water- sheds of similar character, it is obvious that, no matter how good the general agreement of the main features, exact duplication was im- possible. Watersheds A and B at Wagon Wheel Gap, therefore, have certain character- istics in which they are quite different. Through these two small valleys flow tiny streams which descend toward the Rio Grande. The streams are approximately parallel in their lower por- tions and flow, in a general direction, from west to east. The area of the south watershed, A, is 222.5 aeres and that of the north water- shed, B, is 200.4 acres. The lower point of A is 9,373 feet and the upper point 11,355 feet above sea-level. Corresponding elevations for B are 9,245 feet and 10,952 feet above sea- level. These facts are not as significant, so far as this study is concerned, as the fact that watershed A is relatively long and narrow, while B is short and fan-shaped. These char- acteristics exert considerable influence upon the rate of runoff, for, owing to the short, steep, slopes of A, the flood crest arrives more quickly than in B, but falls sooner, then comes to a secondary maximum of longer duration, because of the greater length of the watershed. The flood at B exhibits no secondary maximum because the water reaches the dam from all 1 Bates, Carlos G., and Henry, Alfred J.: ““Streamflow Experiment at Wagon Wheel Gap, Colo.’’ Mo. Weather Rev. Supplement No. 17, pp. 55, figs. 41. A very complete paper repre- senting a summary and extracts from the Supple- ment was published in the Mo. Weather Rev. for December, 1921, under the same title, pp. 637-650. Believing that separates of this shorter paper will satisfy those who have an academic, rather than a professional, interest in the subject, a lim- ited number of reprints are now available. Application should be made to the Chief of the Weather Bureau, Washington, D. C. Copies of the complete report, Supplement 17, may be ob- tained at 50 cents each from the Superintendent of Documents, Government Printing Office, Wash- ington, D. C. SCIENCE 623 parts of the watershed at approximately the same time. Moreover, 4 and B lying in dif- ferent directions, as explained above, involves a difference in the rate of snow melting owing to the different exposure of the slopes to the sun; this has an effect upon the streamflow. The geological character of the two watersheds has been found to be the same. The trees con- sist largely of Douglass fir, although there is a considerable sprinkling of bristle-cone pine and Englemann spruce, the distribution depending upon the altitude, the exposure of the slope, and the amount of rock in the soil. : The observing equipment is of two kinds, meteorological and hydrological. Six primary meteorological stations were established at the beginning of the experiment, one at the base and one in the upper reaches of the streams, and two in each of the valleys. The equipment of these stations varies according to the topo- graphic features in the vicinity; but, among them are to be found maximum and minimum thermometers, psychrometers, thermographs, soil thermoscopes, hygrographs, anemometers, raingages, and snow bins. ‘The headquarters station is the most completely equipped, having two standard barometers, and a triple register for recording automatically wind direction and speed, precipitation and sunshine. On A there are 18 snowscales—graduated stakes 12 feet high—and on B, 14 scales, the location of each having been carefully selected so as to be rep- resentative of the snowfall on a given acreage. The hydrological equipment consists of a dam in each stream so constructed as to make the surface and subflow of the streams avail- able for measurement. Back of the dams are concrete basins in which continuous automatic record of the waterstages is kept by a Friez recorder. The instrumental record is checked daily by a reading with the hook gage, the latter being so accurate that several observers do not differ more than 0.001 foot on a given reading. . The dams at first had rectangular weirs, but for these triangular weirs were later substituted. The following facts are shown by the nine years of meteorological observations: (1) The mean minima for identical periods and times are slightly higher for slopes facing south than for those facing north, but the greatest differ- 624 ence for any month does not exceed 1° F. Comparing corresponding slopes of the two watersheds, the mean temperature is substan- tially the same. (2) Precipitation occurring as rain is practically equal on both watersheds. If the soil is saturated, as small a rain as 0.01 inch may cause the streamflow to respond; but ordinarily rains of 0.10 inch or less in summer merely replenish losses due to evaporation or transpiration, and do not affect streamflow ap- preciably. Most of the summer rains are not in excess of 0.25 inch, hence it is seen that summer rains are not, in general, of great importance. (3) A little less than 50 per cent. of the precipitation is snow, but it yields more than half the runoff. The average depth of snow per season is 113.3 inches. The maxi- mum observed was 149.7 inches and the mini- mum 80.7 inches. Interesting features of the streamflow records are: (1) Stream 4 rises more rapidly than B and reaches a maximum sooner than B, but before the flood has subsided a secondary max- imum with a steadier flow may occur at A. This feature, as mentioned above, is easily ex- plained by topography. (2) Winter. and autumn show very little diurnal variation of streamflow; summer is more marked, with a maximum in the early morning hours and a minimum between 1 and 2 o’clock in the after- noon; spring, however, with the great amount of melting snow, has a pronounced diurnal period owing to alternate freezing and thawing. The amplitude of variation is greater at A than at B, and the 4A maximum and minimum are more pronounced. (3) An estimated disposi- tion of 21.00 inches of precipitation, the aver- age annual amount for eight years observations, is shown for A as follows: BIW ON ALL OM aaeee ee eee rela 7.39 inches Transpiration) p22 se ee 3.91 inches Imtexcep tio nea sees 3.62 inches Runoff - 6.08 inches SDOLAN ieee eea epee ante eee 21.00 inches It is clear that the. objective of all these studies is an accurate estimate of the relations between the various factors on A and B in order that, in the years following: denudation, the conditions on A can be used as an index SCIENCE [Vou. LV, No. 1432 to what would have occurred on B had denuda- tion not been effected. It is only in this way that the effect of the presence or absence of trees can be ascertained. Much of the paper, therefore, is devoted to these relations in too great detail for abstracting. Thirteen “rules’’ are developed as statements of these relations to be used in the later discussions. These con- cern ratios of discharges in different periods and at different times, time intervals between’ crests, probable height of crests, and the depo- sition of silt. 4 This experiment is of great practical im- portance with respect to hydrological prob- lems—floods, irrigation, ete., and its outcome will doubtless be watched with the greatest interest by those who are concerned with these problems. C. LeRoy MrrIsincER WASHINGTON, D. C. SPECIAL ARTICLES AN EARLY STAGE OF THE FREE-MARTIN AND THE PARALLEL HISTORY OF THE INTERSTITIAL CELLS THe theory that the intersexual condition of the free-martin depends upon hormones secreted by interstitial cells of the testis of the male twin and distributed by its blood to the female :depends primarily upon the demon- strated connection between fetal vascular anastomosis and the intersexual condition of the female twinned with a male calf, and see- ondarily on comparative data. The time of effective action of the male hormone has been presumed to be very shortly after the beginning of sex-differentiation in the embryo (Lillie, 17) owing to the known normal condition of the embryonic membranes in such stages, which renders vascular connection possible, and the very profound nature of the effect. The earli- est stage of the free-martin hitherto deseribed s 7.5 em greatest length (Lille, 717; Chapin, 17). Sex-differentiation begins at approxi- mately 2.5 em. The gap thus indicated in our knowledge of this phenomenon is now largely filled up by study of a free-martin of 3.75 em greatest length, and of the complete history of the interstitial cells of the testis and ovary from 2.5 em throughout life. me JUNE 9, 1922] In the 3.75 em free-martin the gonad is much less than half the bulk of those of normal males and females of corresponding age. The germinal epithelium (cortex of ovary) is only about one fifth the thickness of that of the normal female of corresponding age and less developed than a female of 3 cm _ greatest length. The blood of the male has already operated to inhibit growth of the entire gonad and to stop the differentiation of the cortex. The specific male sex-hormone is thus demon- strably present in the blood at this stage. Interstitial cells appear in the testis of the normal calf embryo between the stages of 2.7 and 3 em greatest length. At the latter stage they are identical in size and histological strue- ture with those of later stages and the adult; they have a continuous history up to adult age. In the female, on the other hand, comparable cells do not appear in the ovary until about the time of birth. The following conclusions may be drawn: 1. The appearance of interstitial cells in the testis at the very time that a male hormone may be demonstrated by its physiological effects (free-martin) is strong evidence that these cells secrete the sex-hormone. 2. The absence of such cells in the female and the corresponding lack of effect of the female blood on the male twin argue in the same sense. 3. In the female of cattle sex-differentiation before birth is apparently due to genetic factors exclusively; in the male the genetic factors are intensified by the production of a hormone. The detailed data will be published shortly by the authors separately, Mr. Bascom dealing with the interstitial cells. Frank R. LILuiE K. F. Bascom HULL ZooLocGicaL LABORATORY, Tue UNIVERSITY OF CHICAGO May 18, 1922 THE EFFECT OF ACID ON CILIARY ACTION AS A CLASS EXERCISE IN pH Tue effects of changes in hydrogen-ion con- centration have received so much attention in the recent literature that it has become desir- able to incorporate some exercise into labora- SCIENCE 625 tory courses in physiology which will illustrate the principles by which the py, of a solution is determined. For the majority of college laboratories “gas chain” apparatus, potentio- meters, ete., are out of the question for student work. The colorimetric method, however, which is very simple and sufficiently accurate for general laboratory problems, can be used to good effect at very little expense. For our class in general physiology consist- ing of some twenty students in their second and third college years, we have outlined an experiment on the stopping of ciliary move- ment in the epithelium of the frog’s esophagus by acid which has proved most successful. The experiment is in the form of a problem, and is stated thus: “Find the concentration of acid which will stop ciliary action within approxi- mately three minutes.” The students work in pairs. A small bit of ciliated epithelium is placed on a slide, and while one student ob- serves this under the low power of the micro- scope, the other places upon the tissue a few drops of acid, and records the time. When the concentration has been found which stops the movement of cilia in three minutes, an indica- tor is added in the correct proportion (Clark, 20, p. 40) and the py determined by matching the resulting color with the appropriate color in the color chart. When acetic acid diluted with distilled water was used with brom phenol blue as indicator, the following answers were handed in by the class : Motion stopped in less than 2 2 groups of students. Motion stopped in 3 min., p,, = 3.5, 6 groups of students. Motion stopped in 34% min., p,, = 3.6, 1 group of students. Motion stopped in 9 min., p,, = 3.8, 1 group of students. min., pj; = 3.4, The agreement between these results is, we think, very good for an ordinary class exercise. It should be noted that ordinary distilled water is decidedly acid, py = +£6.3, and that cilia cease to beat in it within approximately half an hour. In 0.7% NaCl, the beating con- tinues for a day, and in Ringer’s solution for three or four days at room temperature. For 626 _ purposes of strict accuracy, therefore, the acid should be added to normal saline or Ringer’s solution, but for class purposes the distilled water will serve. The experiment has been designed not only to show the stopping of ciliary action at a definite hydrogen-ion concentration, but also to bring out the difference in effect between an organic acid, such as acetic, and a mineral acid, such as hydrochloric. In the latter case even a concentration, py, — 2, thymol blue as indi- eator, will not stop the beating of the cilia in less than 15 minutes. The greater concentra- tion of hydrogen-ion required for the mineral acid than for the organic acid is of course cor- related with the difference in rate of penetra- tion of these acids into tissues. Furthermore, in order to obtain comparable results the pieces of epithelium must be from corresponding regions of the frog. If the tissue is taken from the more posterior levels, i. e., from within the esophagus itself, where the cilia are very long, it is found that the beating continues for a longer time in a given concentration of acid than in the pieces from more anterior levels, 7. e., the back of the mouth, where the cilia are very short. The ex- periment therefore brings out the fact that sus- ceptibility to acid decreases in passing from anterior to posterior levels of the alimentary tract. ie J. M. D. OtmsTED J. W. MacArruur UNIVERSITY OF TORONTO Reference: W. M. Clark, 1920, The Determina- tion of Hydrogen-Ions. THE SOCIETY OF MAMMALOGISTS Tue fourth annual meeting of the Society of Mammalogists was held in New York City on May 16 to 18, 1922, where the society was invited to hold its meetings at the American Museum of Natural History. Besides the reg- ular business sessions and the election of new officers, papers were presented, and the pro- gram is given as follows: TUESDAY, May 16 Afternoon Session, 2:00 P.M. The present status of the elk: E. A. GOLDMAN. Mammals of the mountain tops: Wiuu1amM L. SCIENCE [ Vou. LV, No. 1432 FINLEY. (Presented by John Treadwell Nichols). The water supply of desert mammals: VERNON BAILEY. A quantitative determination of damage to forage by the prairie-dog, cynomys gunnisoni zuniensis Hollister: WALTER P. TAYLOR. Studies of the Yellowstone wild life by the Roosevelt Station: Cuartes ©. ADAMS. The part played by mammals in the World War: ERNEST HAROLD BAYNES. Evening Session, 8:00 P.M. The members of the society were invited to the new home of the Explorers’ Club, 47 West 76th Street. The board of directors of the club ex- tended the courtesy of the club to the members of the society during their session. WEDNESDAY, May 17 Morning Session, 10:00 A.M. The frequency and significance of bregmatie fontanelle bones in mammals: ADOLPH H. SCHULTZ. A fossil dugong from Florida: GuoveR M. ALLEN. Certain glands in the dog tribe: ERNEST THOMPSON SETON. The elephant in captwity: W. H. SHEAK. The burrowing rodents of California as agents in soil formation: J. GRINNELL. Afternoon Session, 2:00 P.M. Symposium on the Anatomy and Relatsonships of the Gorilla: How near is the relationship of the gorilla- chimpanzee stock to man? W. K. GREcory. Notes on the comparative anatomy of the gorilla: G. S. HuntTiIneton. Was the human foot derived from a gorilloid type? D. J. Morton. Reichenow’s observations on gorilla behavior: J. H. McGrecor. On the sequence of eruption of permanent teeth in gorilla and man: Mito HELLMAN. Phylogenetic relations of the gorilla: evidence from brain structure: FREDERICK TILNEY. Evening Session, 8:00 P.M. The motion picture as a medium for intimate animal studies: ARTHUR H. FISHER. Motion pictures, some showing slow motion, of anthropoidea, sea lion, Barbary sheep, kangaroo and yak, and the habits of the beaver: RAYMOND L. DrrMars. Motion pictures of sea-elephants: CHARLES H. TOWNSEND. JUNE 9, 1922] TuHuRSDAY, May 18 Morning Session, 10:00 A.M. Close of the age of mammals: HEnry Fatr- FIELD OSBORN and H. E. ANTHONY. Food-storing by the meadow-mouse: GLOVER M. ALLEN. An evolutionary force of a wide range: ERNEST THOMPSON SETON. The meetings were well attended, and among the members present were mammalogists who represented the leading institutions of the coun- try, such as the United States National Mu- seum,, the Bureau of the Biological Survey, the Field Museum of Natural History, the Museum of Comparative Zoology, the Academy of Natural Sciences of Philadelphia, the American Museum of Natural History and the New York Zoological Society. Among the many interesting papers that were given before the mammalogists was the “Symposium on the Anatomy and Relation- ships of the Gorilla.” At this session the at- tendance was probably greater than at any of the others, and representatives of the press were present to make the most of a subject in which the publie is at present so keenly inter- ested. The consensus of opinion as expressed by the speakers in this symposium was that the gorilla stands very high among the anthro- poids in its relationship to man, and the evi- _ dence presented, together with the detailed descriptions of the man-like characters of the anthropoids, set forth data for an argument which the anti-evolutionists would have great diffieulty to refute. At the last of the meetings for the presenta- tion of papers, the “Close of the Age of Mam- mals” was given by Professor Henry Fairfield Osborn and Mr. H. E. Anthony. Professor Osborn took as his thesis the very rapid dis- appearance of our mammalia, which leads to the conclusion that the age of mammals will come to a close at no very distant date. After outlining the inception and the development of the age of mammals, illustrating his points by distributional maps, Professor Osborn stated that this age had reached its greatest develop- ment in the late Pliocene and early Pleistocene, at which time the glacial periods began the destruction which is receiving its final accelera- tion to-day at the hands of man. Having SCIENCE 627 brought this outline of the history of the age of mammals down to the present day, Professor Osborn was followed by Mr. Anthony, who showed a chart of statistics and gave figures on the great destruction of mammal life which may be laid at the door of the fur trade. A discussion of the papers followed, during which Dr. W. T. Hornaday, the noted advocate of wild life conservation, spoke at some length upon the disappearance of present day mam- mals and urged the great necessity of untiring efforts to stave off complete extermination. Further discussion was given by Dr. W. D. Matthew, Dr. Wilfred H. Osgood, Dr. Charles C. Adams and Dr. E. W. Nelson, all of whom were inclined to believe that it was no exag- geration to consider that the “Age of Mam- mals” was rapidly coming to a close, and that stringent measures are necessary to protect the surviving members. Dr. Adams, who is direc- tor of the Roosevelt Wild Life Forestry Exter- mination Station at Syracuse, N. Y., main- tained that the only hope lies in education, not so much of the adult, as of the younger genera- tion, and pointed out the advisability of estab- lishing numbers of wild life preserves, so that people might come to know the wild life of their own region by visiting the local pre- serves. The mammalogists were the guests of the American Museum at a luncheon on Tuesday, May 16, and were guests of the New York Zoological Society at luncheon on Thursday, May 18. The annual dinner was held the evening of Wednesday, May 17, at the Hotel San Remo. At the annual election of officers, all of those holding office were re-elected. At the close of the morning session of Thurs- day, the members adjourned to the North American Hall of the American Museum where, by short exercises, the museum dedicated this hall to the memory of the late Dr. J. A. Allen, who was the society’s only honorary member. The hall hereafter will be known as the J. A. Allen Hall of North American Mammals. President Henry Fairfield Osborn presided and, on behalf of the trustees, made the dedica- tion of the hall, which was accepted on behalf of the Division of Zoology and Zoogeography of the museum by Dr. F. M. Chapman. An 628 appreciation of Dr. Allen’s services to natural history was given by Dr. E. W. Nelson, presi- dent of the Society of Mammalogists. At the close of the luncheon given by the New York Zoological Society, the mammalo- gists were taken for a private view of the new halls of the National Collection of Heads and Horns and a tour through the park under the guidance of the officers of the Zoological So- ciety. PROGRESS IN ANIMAL PHOTOGRAPHY The American Museum had planned for a prize exhibition of photographs of mammals to be held at the time of the meeting of the American Society of Mammalogists. This ex- hibition was opened to the public on May 15, and judges for the exhibition were appointed by President Nelson of the American Society of Mammalogists at the first business meeting of the society. The board of judges appointed by Dr. Nelson was as follows: Dr. Wilfred H. Osgood, chairman, Dr. Witmer Stone, Mr. Charles R. Knight, Mr. James L. Clark and Mr. H. E. Anthony. The photographs were exhibited in the Hall of Forestry on the first floor of the museum, where they will remain on exhibition for a month. Some 1,654 photographs were received for this exhibition and there were 139 con- tributers. Requests for photographs and con- ditions of the contest had been drawn up and submitted by an American Museum Committee as follows: Mr. H. E. Anthony, chairman, Mr. Herbert Lang, Dr. Robert Cushman Murphy and Dr. G. Clyde Fischer, but the credit for the very unusual and splendid display of photo- graphs which was brought together must be given to Mr. Herbert Lang, who worked day and night to make the exhibition a success. The unanimous opinion of the many who have seen this exhibition has been that it is easily the finest exhibition of mammal photographs ever displayed in this country. So many un- usual photographs were submitted that the judges found it a difficult task to award the prizes, but finally made the following selection: 1. PHOTOGRAPHS OF MAMMALS IN THE WILD STATE First prize: John M. Phillips, Mountain Goat. Second prize: Norman McClintock, White-tailed Deer. Third prize: Edmund Heller, Mountain Sheep. SCIENCE ( [Vou. LV, No. 1432 First honorable mention: Hartebeest. Second honorable mention: Donald R. Dickey, Deer. Third honorable African Elephant. Fourth honorable mention: rodt, Brown Beav. Fifth honorable mention: Donald B. MacMillan, Polar Bear. Carl KE. Akeley, mention: Kermit Roosevelt, Edward Mallinck- II. PHoToGRAPHS OF MAMMALS IN CAPTIVITY First prize: Elwin R. Sanborn, New York Zoological Park, Chimpanzee. Second prize: J. E. Haynes, Bison Stampede. Third prize: W. Lyman Underwood, Bay Lynx. First honorable mention: Mr. and Mrs. Ernest Harold Baynes, Wolf. Second honorable mention: J. B. Pardoe, Fly- ing Squirrel. Third honorable mention: Joseph Dixon, Cougar Kittens. Fourth honorable mention: Leland Griggs, Fox Head. Fifth Lioness. honorable mention: Arthur H. Fisher, JOEL A. ALLEN MEMORIAL One of the most important measures taken up by this meeting of the American Society of Mammalogists was the formulation of plans and the appointment of a committee for estab- lishing a publication fund to be known as the J. A. Allen Memorial Fund. This fund has been set at $10,000, and the interest from this — sum, when it has been properly invested, will be used by the American Society of Mammalo- gists for the publication of papers to consti- tute a series of continually appearing memo- vials to the late Drv. J. A. Allen. The com- mittee appointed to raise this fund, and given full powers for this purpose by the society is as follows: Mr. Madison Grant, chairman, President Henry Fairfield Osborn, Mr. Childs Frick, Dr. George Bird Grinnell and Mr. H. E. Anthony. It is expected that friends of Dr. J. A. Allen, mammalogists and of wild’ life throughout the country will give their support toward the raising of this fund, since natural science has never had a more devoted student than Dr. J. A. Allen, and the purposes for which the fund will be devoted are outlined to give the greatest possible encouragement to students research in mammalogy. New SERIES ec SiycLe Copies, 15 Crs. Vou. LV, No. 1433 Pripay, JuNE 16, 1922 ANNUAL SUBSCRIPTION, $6.00 The Balopticon at the Summer School hz will be found a great aid in intensifying interest, ’so necessary in covering the amount/of work scheduled for so short a term. Bausch & Lomb BALOPTICON The Perfect Stereopticon will project any opaque subject that the large object holder will accom- modate. Snap shots, maps, speci- mens and colored pictures, as well as lantern slides, can be projected by this efficient machine. Well built and free from operating difficulties the Balopticon with its Mazda lamp, is a worthwhile investment. WRITE LOR DESCRIPTIVE CIRCULAR. Bausch ¢9 Jomb Optical ©. 552 St. Paul Street Rochester, .N. Y. New York Washington Chicago San Francisco London —a1 Leading American Makers of Microscopes, Projection Apparatus (Balopticons), Photo- HW] sraphic Lenses, Ophthalmic Lenses and Instruments, Photo-Micrographic Apparatus, Range Finders and Gun Sights for Army and Navy, Searchlight Reflectors, Telescopes, Stereo-Prism Binoculars, Magnifiers and Other High Grade Optical Products. = = that that 95 may see. eter and are i SCIENCE—ADVERTISEMENTS Complete Dynamo Electric Machinery Apparatus For Demonstrating Direct Current Motors and Generators The Synchronous Motor Alternating Current Rotating Field and ine Qluseeins (Cran) Congas The Transformer and Its Principles Induction Motor Two or Three Phase Alternating Current The Rotary Converter Phenomena ._ This apparatus consists essentially of two fields which may be fitted with poles on which are wound coils and these fields may have 2, 4, or 6 poles for direct current work or 3 or 6 poles for three phase alternating current work. A simple direct current armature is supplied for mounting in this field and with this armature may be demonstrated a series or shunt wound motor or dynamo and all characteristics of direct current dynamo electric machinery of either 2, 4, or 6 poles. This furnishes much valuable informaton regarding the con- nections of the different poles, the direction of rotation, etc. The aluminum cup for use in this magnetic field illustrates the principles of the closed circuit rotor for induction motors. The reversal of one of the field coils shows reversal of direction of rotation and other similar important principles may be shown. The converter may be demonstrated by placing the armature which has slip rings on one side in the field shown on the right and arranging the poles and connecting a battery so as to run it as a direct current motor. The brushes underneath will collect alternating current and this may be used for ringing bells and may be shown to be alternating by the use of meters. The Synchronous motor may be shown by carefully increasing the frequency of the alternating cur- rent generated by increasing the speed of the central handle and at the same time have the armature connected to this alternating current and the field coils in the proper order connected to direct current. The alternating current generator may be demonstrated by energizing the fields by direct current and using the armature that has the slip rings on it. One of these fields has two slots in it for holding a yoke on which are two concentric, removable coils and with this may be shown all the principles of the transformer, as transformation ratio, etc. When used for alternating current work, that part of the apparatus which is mounted on the center of the base converts direct current into alternating current and there can be obtained either single phase, two phase or three phase current. By the use of the polyphase current, a rotating field may be produced, and by the use of the mounted magnetic needle it may be shown how this needle is whirled around as the field rotates. This set contains a minimum of parts but enables teaching practically every application’ of either alternating or direct current, dynamo-electric power apparatus. This outfit is complete with the two fields and the A. C. Generator mounted on a base and the follow- ing parts: 6 field coils, 1 direct current armature, 1 direct current armature’ with slip rings, 1 mounted magnetic needle, 1 aluminum cup rotor, 1 transformer yoke with both primary and secondary coils. QUALITY, A SIGN OF QUALITY ILC A MARK OF SERVICE SERVICE W. M. WELCH SCIENTIFIC COMPANY Manufacturers, Importers and Exporters of Scientific Apparatus and School Supplies 1516, Orleans Street CHICAGO, ILL., U. S. A. SCIE A Weekly Journal devoted to the Advancement of Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS Il Liberty Si., Utica, N. Y. Garrison, N. Y. New York City: Grand Central Terminal Annual Subscription, $6.60. Entered as second-class matter January 21, 1922, at the Post Office at Utica, N. Y., under the Act of March 3, 1879. Single Copies, 15 Cts. Vou. LV JUNE 16, 1922 No. 1433 CONTENTS The Maintenance of Scientific Research: Sir CHARLES SHERRINGTON .....-0-------yec--ceccseeeeeeoeeees 629 BELL The American Association for the Advance- ment of Science: The Salt Lake City Meeting: PRorressor BURTON BH. WiVINGSTON. 22 ...-02-.-eecec-cceceeeeeeoeee 633 Scientific Events: The Spencer Fullerton Baird Memorial; International Congress of the History of Medicine; Research Fellowships adminis- tered through the Division of Biology and Agriculture of the National Research Council; American Meteorological Society ; Chairmen of the Divisions of the National Research Council; The U. S. Commissioner of Fisheries Scientific Notes and News University and Educational Notes............-..--. 642 Discussion and Correspondence: The Origin of Species: Dr. Davin STarr JorDAN. The Kaicteur Falls: ArtuuR OC. Harpy. Museum Pests feeding on Glycerine Jelly Slides: W. C. Kraarz. Nectarina in Decas: MRANK @) PELLEDT. 12 642 Scientific Books: Bowie on Geodetic Operations in the United States: Dr. JOHN F. HAYFORD.......00.0..0220-20.2.. 645 Special Articles: A Haploid Mutant in the Jimson Weed: Dr. A. F. BLAKESLEE, Dr. JoHN BELLING, M. E. Farnuam and A. DororHy BERGNER. The Mass of the Electron at Slow Velocity: Proressor L. T. Jones and H. O. Hours. The Hydrogen-ion Concentration of Soils as affected by Drying: Dr. Pau 8S. Bur- GESS The American Philosophical Society: Pro- FESSOR ARTHUR W. GOODSPHEED.....-.-2-----:.000--- 649 634 THE MAINTENANCE OF SCIENTIFIC RESEARCH! Broapty taken, the apparatus of prosecution of research in this country is made up as fol- lows: (1) Scientific and professional societies and some institutions entirely privately sup- ported; (2) universities and colleges, with their scientific departments; (3) institutions, using that term in the widest sense, directly subven- tioned by the state, such for instance as the Medical Research Council, the Development Commission, and the Department of Scientific and Industrial Research. Of these three ecate- gories, the first named, the scientific societies group, works without financial aid from the state, apart from the small though extremely useful two government grants distributed, mainly to individual workers, through the Royal Society. At the present time many of the societies sorely need financial help to carry on their labors, and some are absolutely at a loss to know how to publish the scientific re- sults that are brought to them. The second category, the universities and colleges, depends in part upon government aid. In the aggre- gate of twenty-one institutions of university yank, following Vice-Chancellor Adami’s fig- ures, students’ fees and endowment provide about 63.5 per cent. of the total income; for the rest they are dependent on government grant. The third category, as said, draws state- support direct. This triple system may seem a somewhat haphazard and incoordinate assembly. Yet in reality it is an organization with much solid- arity,- and its coordination is becoming more assumed. Its parts dovetail together. The first group, the scientific and professional societies, is provided with a medium of intercommuni¢a- 1 From the presidential address delivered at the anniversary meeting of the Royal Society and printed in Nature. 630 tion and ¢o-action, the Conjoint Board of Sci- entific Societies. As to the separate categories composing the triple system itself, they also are in wide touch one with another. Between the scientific and professional societies on one hand and the universities on the other, contact and inter-relation are secured by some degree of free and rightful overlap, both as regards general subject-matter of research and of their personnel. Tinally, there is excellent contact between both these categories and the third, the state subventioned institutions. A special fea- ture of the policy and administration of these state organizations secures this, a feature which makes the whole of this subject the more cognate to the purview of our own society. To exemplify I may turn, for instance, to the Development Commission. Its program of fishery research, avoiding the terms “pure” re- search and “applied” research in view of the possible implication that pure research does not lead to practical result, directs research not alone to the solving of particular economic problems. It supports more especially what it terms “free” research, investigation in this case of the fundamental science of the sea and of marine life. Again, with the Advisory Council of Scien- tific and Industrial Research, its program, gradually defined during the past six years, is laid down as having four main points: (1) the encouragement of the individual research work- er, particularly in pure science; (2) the organ- ization of national industries into cooperative research associations; (3) the direction and co- ordination of research for national purposes, and (4) the aiding of suitable researches under- taken by scientific and professional societies and organizations. It recruits researchers by giving financial opportunity to promising stu- dents to be trained in research, attaching them to experienced researchers. In short, it ap- prentices to research a number of selected younger workers in universities, colleges and other seattered throughout the eountry. So, similarly, the Medical Research Council. Its seeretary, Sir Walter Fletcher, in an illum- inating presidential address to Section I of the British Association meeting this summer, said, institutions SCIENCE [Vou. LV, No. 1433 speaking of the nexus between scientific re- search and the progress of medicine, “It is the accumulating knowledge of the basal laws of life and of the living organism to which alone we can look for the sure establishment either of the study of disease or of the applied sciences of medicine.” It is evident, therefore, that, with a poliev based on such principles as these, the third category in the triple system constituting the organization for scientific research in this country is one which has common aim and solid touch with both the others, the universities and the scientific and professional societies. One sees in short that the organization which has come into existence and is maintaining scien- tific research in this country is a real organiza- tion. It did not spring fully equipped from the head of Zeus. It has grown up rather than been planned. In that respect it is an organization essentially British, and it seems qualified to do its work for the country well. We hear of adventures, political and other, the offspring of the day. But these were no adven- tures, these, to my mind, welcome, long-overdue steps forward by the state toward the succor of science and its welfare, steps that help to strengthen and consolidate the organization for research by such adjuncts as the Medical Research Council and the Department of Scien- tific and Industrial Research. One of the strengths of this organization that has arisen is, In my view, that it interlocks with the edu- cational system of the country. It is an organ- ization which proceeds on the wise premise that, in the case of science, the best way to get the fruit is to cultivate the tree. It is an or- ganization which is proving successful and economical. Its output has proved a more than liberal return on the funds at its disposal. But essential to its continuance is continu- ance of adequate financial support from the government. We, NEW YORK CITY a ae Ave., 18th—19th St. li SCIENCE—ADVERTISEMENTS Just Issued KOFOID and SWEZY Mitosis and fission in the active and encysted phases of Giardia enterica (Grassi) of Man. 00 cents. Mitosis in Endamoeba dysenteriae in the bone marrow in Arthritis deformans. Endamoeba dysenteriae in the lymph glands of Man in Hodgkin’s disease. In one cover, 25 cents. Mitosis in the encysted stages of Endamoeba coli (Lésch). (In press), 30 cents. University of California Press Berkeley, California NEW BOOKS FOR SCIENCE LIBRARY RICHTER. Organic Chemistry, Vol. 2 The Carbocyclic Series. Trans. by E. E. F. D’atse. Cloth, $8.00. PAULI. Colloid Chemistry of The Proteins Illus. By Progr. Dr. F. Pauti (Vienna). Cloth, $2.25. HATSCHEK. Physics And Chemistry of Colloids 4th Edition. Illustrated. Cloth, $2.25. YOUNGKEN. Textbook of Pharmacognosy By H. W. Youncken, Ph.D. 210 illus. Cloth, $6.00 PITFIELD. Compend of Bacteriology Includes animal parasities. 4th Edition. 86 illus- trations. Cloth, $2.00. ATWOOD. Civic and Economic Biology By Pror. W. H. Arwoop. Illustrated. Cloth, $1.68, JENKINS. By Pror. Ouiver P. Jenkins. LEE. Microtomist’s Vade Mecum By A. B. Lee, F.R.M.S. 8th Edition. Cloth, $6.50, SHUTTLEWORTH and POTTS. Mentally Deficient Children Treatment and Training. Cloth, §3.25. STODDART. Mind And Its Disorders 4th Edition. 85 illustrations. Cloth, $7.50. P. BLAKISTON’S SON & CO. Philadelphia Interesting Neighbors 81 illus. Cloth, $1.12. Sth Edition. Illustrated. Hammer’s Spinthariscope is a device to illustrate the spontaneous disinteg- ration of radium. Alpha rays expelled from radium ore strike a screen of phosphorescent zinc sulphide causing bril- liant flashes of light which can be observed through a high-powered magnifying glass. Price complete as shown_________- $4.00 Phosphorescent zinc sulphide screens Ao) 4S SS eee each 2.00 Headquarters on Radium Apparatus For Demonstrating and Detecting Radio-Active Substances Hammer’s Radioscope is an instrument for detecting the presence of radio-activity in water, ores, etc., by the scintillation meth- od, which is the most sensitive of all meth- ods for determining the presence of ra- dium. Price complete, $10.00 For Sale by The Denver Fire Clay Company Denver, Colorado SCIENCE A Weekly Journal devoted to the Advancement of Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS 11 Liberty St., Utica, N. Y. Garrison, N. Y. New York City: Grand Central Terminal Annual Subscription, $6.00. Single Copies, 15 Cts. Entered as second-class matter January 21, 1922, at the Post Office at Utica, N. Y., under the Act of March 3, 1879. Vou. LV JUNE 23, 1922 No. 1434 CONTENTS Research Institutes and their Value: Dr. IRAN CIS) (CARTER: \WiOOD testes sce - note neee te cere 657 The Lijfect of the Nature of the Diet on the Digestibility of Butter: Dr. ArtHuR D. TEV OUMBS |) ee ee Ses SU eee 659 Are Scientists encouraging Popular Ignor- ance: PROFESSOR EUGENE C. BINGHAM........ 664 American Committee to aid Russian Scientists with Scientific Literature: Dr. VERNOW GEE OGG Darlene ON nL ron Cea ty! 667 Scientific Events: The Agitation against the Teaching of Evolution; The Proposed Bombay School of Tropical Medicine; The Royal Academy of Belgium; The Royal Geographical Soci- ety; Sigma Xi at the University of Ken- tucky; Dean of the Sheffield Scientific School. 669 Scientific: Notes and Neétws 2.220. 672 University and Educational Notes.........-----..---- 675 Discussion and Correspondence: Observations of Falling Meteorites: Dr. Grorce P. Merritt. Origin of Soil Col- loids: Dr. Nem E. Gorpon. A Crayfish Lin ap raise Os) O)URO Kei aaeerarar bya, se vue eens AE Yo 675 Special Articles: The Relation between Photie Stimulus and the Rate of Locomotion of Dresophila: Dr. Wint1aM H. Coe. « The Structure of Benzene: Mauricr L. HuGGIns....2....22.020... 678 The American Association for the Advance- ment of Science: Meeting of the Executive Committee of the Council: Prorgssor Burron E. Livine- ston. Permanent Secretary’s Report. Sec- tion M—Engineering and Associated Socie- ties: DR: PETER: GILLESPIE 680 ‘from the general current of existence. RESEARCH INSTITUTES AND THEIR VALUE! In this restless, drifting world in which we now live, even intelligent people are not always appreciative of the fact that many if not most of the great intellectual achievements in various fields have been accomplished only when the thinker has been protected from the interrup- tion and annoyance of passing events and per- mitted to work out his ideas somewhat apart In the Middle Ages, the alchemist, the philosopher or the mathematician retired to a garret or cellar and there achieved his purpose, and even to this day the idea that starvation and a garret are successful stimulants to scientifie investiga- tion clings persistently to the popular mind, together with so many of those superstitions by which humanity is still largely guided. Truth is that the thinking man in the middle ages was driven into a garret and often compelled to accept poverty because his thoughts or dis- coveries had no commercial value or popular interest, and, if published, sometimes led to controversies settled once for all by that unan- swerable argument of authority, the fagot and the stake. The example of Servetus must surely have been a severe blow to hasty pub- lication. One of the early masters of medi- cine, he died a martyr to his printed opinions at the early age of 42, his old friend, John Calvin, seeing to it, it is said, that the fire was well started. But the time when important extensions of the boundaries of knowledge, especially in sci- ence, can be accomplished in garret or cellar with no material except brains, a little sealing wax, some wire and a few pieces of glass, 1An address delivered at the opening of the new laboratory building of the Collis P. Hunting- ton Memorial Hospital, Harvard University, May 15,1922. 658 which was about the equipment with which Faraday made some of his most valuable dis- coveries in electricity, has long since passed. Brains are still the chief essential, but modern science has gone in most of its phases beyond the stage of easy discovery of important prin- ciples. No clearer demonstration of the fallacy of the popular belief in the capacity of the man in the street to solve complex problems exists than the report of the Naval Consulta- tion Board in which it is shown that of one hundred and ten thousand suggestions received only one in a thousand were even worth con- sidering, and of this one hundred and ten only one was put into production. A few highly trained scientific men, on the other hand, made most of the useful discoveries. To-day scien- tific advance in most fields depends upon the use of equipment of great delicacy and pre- cision, and unfortunately only too often of very high cost. The time calls, therefore, for the organization and classification of research problems and a higher degree of collaboration between scientists than has ever been had be- fore, and it is characteristic of that vision which has so often been a quality of Harvard thought and action that we are gathered to- gether to celebrate the opening of a laboratory devoted to investigation in a field of science but newly set aside, that of biophysics. The name is new, though the science itself is not. When the professor of anatomy in the Univer- sity of Bologna first used frogs’ legs as a gal- vanometer to reveal the presence of electric currents, he was studying biophysics, even if in a somewhat elementary form. In our own times this new field for research has been sequestered from the disciplines of biology and physies as a special region, possibly because the knowledge of the chemistry and the physics of the human body has reached a point in its advance at which there is a httle slowing-up in the rate of important discovery. In such a dilemma a shrewd scientist does not keep up a frontal attack, but quickly shifts to a shghtly different approach to the problem. Thus, by the combination of the technical methods of physies and of chemistry in the study of living matter there is promise of an ample yield of valuable knowledge within the next few years and of a material advance which may possibly SCIENCE [Vou. LV, No. 1434 again illuminate the purely physical and chem- ical methods of attack on the secrets of life and in consequence lead to still further achieve- ments in those fundamental sciences. Illustra- tions of the fertilizing value of this method of shifting the line of approach can be culled from the lives of many successful investigators. Pasteur is said to have started early in his life on the study of tuberculosis, but to have dropped it quickly when he found that he could make no headway with the technique then in use. If he had persisted, his name would not be known to-day. Paul Ehrlich spent several years investigating the problem of cancer, but as soon as he found that progress was slow and far-reaching results were doubtful, he quickly shifted to the more profitable field of an attack on parasitic diseases by means of chemical compounds, and there achieved a great and deserved success. As it is one of the marks of genius to over- come obstacles with the least possible waste of energy, so the fact that this special field of biophysies has been selected for a concentrated attack affords an admirable criterion for the intelligence of those controlling the funds for cancer research in Boston. The world will profit by the investigations which in the future will be made in this laboratory, for in contrast to the worker of the older days, who so often concealed the results of his studies in order that he might reap some benefit from them, the modern scientist gives freely and at once to the public everything he achieves. He does not conceal or patent a valuable discovery which would in any way relieve human suffering. The true investigator’s chief stimulus is the love for his science and ambition for his insti- tute; and the responsibility imposed by the great opportunities at his disposal will be, if he is the right sort, one of the strongest forces in sustaining the arduous labor of research. This concentration of responsibility and the development of intellectual power and leader- ship as problem after problem is solved is an important factor in the success of a truly scien- tific institute, a factor the psychology of which has often been overlooked by those administra- tors who wish to impose the regulations of the machine shop in order to obtain quantity pro- duction in science. JUNE 23, 1922] Besides the direct way in which an institu- tion like this, devoted to research in some phase of pure or applied science, benefits humanity, there is also an indirect influence, not so fully appreciated. This is the reflex effect upon the university as a whole, for only by the posses- sion of sueh centers of intellectual concentra- tion does the university become a university in fact rather than in name. Every great teach- - ing institution should be surrounded by a con- stellation of independent institutes such as this, devoted to the amassing of pure knowledge, without a view necessarily to its future use or practicality and without the encumbrances to effective thought which go with administrative work of the teaching of large numbers of im- mature students. Our men of genius in the universities still do too much undergraduate instruction and teach the teachers too little. This is one of the great defects of the present scheme of education, in that it accentuates routine and overlooks the spirit. When a uni- versity possesses a genius he should be tenderly protected and cherished. The ragweed will outgrow the orchid, as has been proved a thou- sand times. Why saerifice another orchid to the test? But in research institutions lies true freedom of thought in the university. While to the undergraduates we must temper some- what the boldness of our theories, in the re- search laboratory everything must be free. No one can foresee in what direction investigation must proceed. No hampering politicians, as in some state institutions, should be allowed to control the direction and type of investigation to be done, their equipment for this function as regards the natural sciences being usually somewhat less than that possessed by our Great Commoner, who is making so brave and useless a fight against the dangerous theories of evolution. Who in his wildest moments could have imagined that the classification and anatomical study of the fleas which infest lower animals could ever have been of use in the saving of human lives? Yet when the Oriental plague threatened this country, in the results of such studies was found the means of combatting the disease, the uncontrolled ravages of which can best be learned by a reading of that old SCIENCE. 659 classic of Daniel Defoe’s, “A Journal of the Plague Year.” When we realize that because of our knowledge of public health obtained by research on apparently unimportant matters the repetition of such a plague is now impossi- ble, we must be grateful to some of those who have made heavy sacrifices in the cause of science. A few institutions like this will answer most effectively the statement recently made in the daily press that the foot-ball coaches had done more for Harvard than all the professors would ever accomplish—and this of a university which can claim Agassiz, Lowell, Norton, Child, Gibbs, Shaler, Royce and William James as only a few among those who have passed on. To enumerate the names of the living who are still doing for Harvard what these men did would be an insult to the intelligence of my audience. The new building which we are gathered to inspect shows in its very architecture the thoughtfulness of those who planned it—simple as every workshop should be, for that is all a laboratory is, a place for labor. It shows that the money which has been given has gone on the inside rather than on decoration. I look forward to a day when architects will sacrifice all their art for the practical in laboratory building, and reserve the demonstration of their skill for libraries, museums and other structures which may properly give room for the display of artistic qualities. But the building is not important. An insti- tution of this type is always, it has been well said, the lengthened shadow of a great man. Those who are to work in it are far more im- portant than any physical structure. The name in itself gives promise of long and useful service, bearing as it will the title of a line of famous surgeons. The annual reports of the Harvard Cancer Commission show how much has already been achieved. There are few groups of investigators in any country who have produced with relatively small means so much of sane, cautious, solid research work in cancer, biology and physies as have those who in the past have worked in the Huntington, and who are now. to enjoy greater facilities, and so may properly be expected to do more and more as the laboratory expands. For 660 * expand it inevitably will. It is said that oppor- tunity knocks but once at the door, but this is the opportunity of receivers, not of givers. To the latter there is no limit. If this building had been built and equipped five years ago, we might not have had to share with our great scientific rival on the continent the discovery of many capital facts concerning the X-ray, for it was only the lack of equipment which kept the brilliant group of physicists who, under the leadership of Professor Duane, have made so many important advances in the the- oretical study of X-rays, from covering many of the practical phases developed instead by our continental colleagues. The verification of the quantum relationship between the fre- quency of the X-ray and the voltage applied to the tube, as demonstrated by Duane, Hull and Webster, is a shining achievement which might easily satisfy any university for a long period of time. The work of Tyzzer on animal tumors especially laid the foundation for much recent research, while the demonstration by Bovie of the relationship between certain light rays and the coagulation of protein and the killing of cells is also a most important con- tribution to the newer aspects of biophysics. Whether the problem of cancer—that last great and as yet unanswered question in medicine— will be solved here, no one can say. But I am sure that the attack will be a brave one and that the results will be characterized by the same scientific caution and freedom from at- tempt at dramatic effect that have marked the work of the Harvard Cancer Commission in the past. We all look to this laboratory as the souree of the highest type of scientific investi- gation combined with an unusual amount of common sense on the human side, due obviously to the influence of the director, Dr. Greenough. There is no reason to think that with the pass- ing of time there will be any change in this high standard. 8 Let us all hope then that this building and its equipment and staff represent merely a beginning from which research will go forward on a broader and broader scale, until at some future time we may have a better insight than at present into what has hitherto successfully evaded human inquiry—the nature of life and SCIENCE [Vou. LV, No. 1434 growth. When that goal is achieved the solu- tion of the cancer problem will be in sight. Francis CARTER Woop INSTITUTE OF CANCER RESEARCH, CoLuMBIA UNIVERSITY ' THE EFFECT OF THE NATURE OF THE DIET ON THE DIGESTI- BILITY OF BUTTER Ir is estimated that in the United States about 18 pounds of dairy butter are consumed per capita yearly and of this amount the larger portion is used for table purposes. This indicates quite conclusively that in spite of the inereasing variety of fats available for table and culinary purposes, dairy butter still remains one of the most popular and widely used edible fats. Formerly it was very gen- erally believed that the principal if not the entire food value of butter was due to the energy which it supplied to the diet. The recent discovery that dairy butter contains a relatively large amount of vitamin A, which has been shown to be essential for an adequate diet, has served to further increase the popu- larity of this extensively used fat. The very general use of butter for food pur- poses is no doubt responsible for the early and continued attention that has been given to a study of its nutritive value by physiological chemists and nutrition experts. Many diges- tion experiments have been carried on both in this country and in Europe to determine its digestibility, but since the experimental pro- cedures of the different investigators were not uniform the results obtained do not permit of direct comparison. The lack of uniformity in experimental conditions is perhaps most notice- able in the wide variation of the nature of the basal ration used by the different investigators. However, this variation in the nature of the foods comprising the experimental diets per- mits to some extent a comparison of the effect Notre: Since dairy butter is a common con- stituent of nearly all diets the following résumé of digestion experiments, conducted by the au- thor while employed as nutrition expert at the U. S. Dept. of Agri., is given to supply informa- tion concerning the effect of other food materials on the digestibility of butter. JUNE 23, 1922] of the nature of the diet on the digestibility of butter. Rubner, in a lengthy series of experi- ments, reports three different values for the digestibility of butter—for a simple diet of butter and potatoes! 96.3 per cent., for a diet of green beans and butter? 91.5 per cent., and for the latter diet with a larger portion of butter? 97.3 per cent. Malfatti studied a diet of polenta (a por- ridge of Indian corn meal) and butier and found that butter was 97.7 per cent. digested.* Mayer determined the digestibility of butter? eaten as a part of a simple diet and reports 98 per cent. and 97 per cent. respectively as an average of three periods of three days each with a mature subject and a nine year old boy. Atwater conducted digestion experiments on a diet of fish and butter and found the butter® to be 91 per cent. digested. Huldgren and Landergren, who served as their own subjects, found the digestibility of butter,’ eaten in con- junetion with hard rye bread, was 95.4 per cent. Luhrig studied the digestibility of butter’ served with a basal ration of meal, bread and vegetables and reports a digestibility of 96 per cent. for butter. Von Gerlach determined the digestibility of butter? when it was eaten with a basal ration of rice, zweiback and oat- meal and found it to be 97 per cent. digested. Since in the metabolism experiments noted above that are not uniform there are many factors, such as food, habits, oceupations, and races of people employed as subjects, it is un- wise to attempt to generalize to any extent on the effect of the nature of the diet on the digestibility of butter. However, in view of the very general and wide spread use of dairy butter in conjunce- 1 Zischr. Biol., 15 (1879), No. 1, pp. 136-147. 2 Idem., 16 (1880), No. 1, p. 127. 3 Idem., 15 (1879), No. 1, pp. 174-176. 4Sitzber, K., Akad. Wiss. (Vienna) Math. Naturw. Kl., 90 (1884), III, No. 5, pp. 328-335. 5 Landw. Vers. Stat. 29 (1883), pp. 215-232. 6 Ztschr. Biol., 24 (1887), No. 1, p. 16. 7 Skand. Arch. Physiol., 2 (1890), No. 4-5, pp. 373-393. 8 Ztschr. Untersuch. Nahr. u. (1899), No. 6, pp. 484-506. 9Ztschr, Phys. u. Didtet: Ther. 12 (1908.9), No. 2, pp. 102-110. Genussmtt., 2 SCIENCE 661 tion with many kinds of food materials, it appears of interest to summarize briefly a number of digestion experiments in which butter has been included as a part of the experimental ration and which have been con- ducted under identical experimental conditions, as regards the type of subjects, the length of experimental period, and methods of chemical analysis. In many of the digestion experi- ments conducted by the writer to determine the digestibility of cereals, legumes, meats, vegeta- bles and flours, butter has been employed as a source of fat for the experimental diet. The butter included in the experimental rations was uniform in that it was always obtained from the same source. Since the digestion experi- ments considered here were made during a period of four or five years, no attempt was made to use a single lot of butter for the entire series of experiments, but it is believed that this butter obtained from a single creamery and presumably from a constant source of milk supply was typical of the ordinary commercial butter purchased by the average consumer. The table on p. 662 contains the data essen- tial for the consideration of these experiments and the text which follows includes a discussion of the details of the different types of diets. The first group of experiments referred to in the table, eight in which dairy butter was the food material studied, are discussed in detail in the initial paper? of a series which has appeared from time to time reporting the results of digestion experiments conducted to determine the digestibility of a large number of edible fats and oils. To secure data con- cerning the relative digestibility of edible fats and oils several digestion experiments with each of the fats studied were conducted under uniform conditions. The experimental ration consisted of commercial wheat biscuit, fruit, sugar, tea or coffee and a special cornstarch pudding or blanemange in which was incor- porated the fat under consideration. In order to mask any noticeable flavor or odor of the fats studied, the blanemange was heavily fla- vored with caramel which gave a uniform char- acteristic caramel flavor and odor to all the 10 ¢“Digestibility of Some Animal Fats,’’ U. 8S. Dept. Agri. Bul., 310 (1915), pp. 22. 662 SCIENCE [Vou. LV, No. 1434 SUMMARY OF DiGESTION EXPERIMENTS IN WHICH Dairy BUTTER HAS BEEN INCLUDED IN A VARIETY OF EXPERIMENTAL Dinrs Neebee emountiomtatiiePer cent. of Digestibility of entire ration of experi- Nature of food mate-| eaten per sub- butter in (Chae renite rial studied ject daily, total fat Protein Fat hydrate yrenatts consumed per cent. | per cent. per cent. 8 Butterie= sae 100 98 70.5 97.0 96.4 10 Daisheen ig ees anae 127 99 80.8 96.1 97.6 of Soy-bean press-cake.... 92 62 86.6 94.2 96.3 4 Peanut press-cake ...... 117 46 90.4 96.5 97.2 3 Kafinwesnes aM, 67 99 49.5 91.6 97.0 4 Feterita as 59 94 49.9 92.3 98.2 4 IMG LO jee see eee ene ante 72 88 36.3 92.1 97.5 5 Kaolians aan 76 89 13.3 90.2 97.0 5 Fine wheat bran 134 67 52.6 94.6 82.7 6 Unground wheat bran 107 65 39.9 93.7 84.4 ue Hard Palates ....22-..-. 127 78 87.3 94.6 97.6 experimental diets which included edible fats and oils. Hight tests were made with this type of diet to determine the digestibility of butter and it was found that on an average butter was 97 per cent. absorbed by the body. The studies of the food value and eulinary possibilities of the dasheen, a variety of the taro (Colocasia esculenta), which is a staple constituent of the diet in large areas of the tropical countries, included a number of diges- tion experiments.11 Since the advisability of the introduction of the dasheen into the sub- tropical regions of the country where the white potato can not be successfully grown or stored was under consideration, it was of considerable importance to have data concerning its digesti- bility. The basal diet for the digestion experi- ments with dasheen consisted of milk, which supplied the larger portion of the protein of the diet, fruit, and butter, which, with the fat from the milk, supplied the fat of the diet. The carbohydrate portion of the diet was largely derived from the dasheen. The results of these experiments show butter to be 96 per cent. digested when eaten as a part of a diet in which the carbohydrates were largely starch, derived from a starchy vegetable. During the World War when it became neces- sary to conserve all resources to the utmost, the writer became intensely interested in promoting the use of the soy-bean and peanut press- cakes for human food. The expression of oil, under sanitary conditions, by the “cold 11‘‘The Digestibility of the Dasheen,’’ U. S. Dept. Agri. Bul., 612 (1917), pp. 11. process” from sound, clean soy-beans or pea- nuts produces a virgin oil and a high grade press-cake rich in protein. These legume pro- teins glycinin (soy-bean) and arachin (peanut) yield on hydrolysis a large amount of lysine, the amino acid essential for growth. The re- ported results of the chemical and biological examination of soy-bean and peanut proteins demonstrate beyond a doubt their high nutri- tional value. In order to supplement this data with information concerning the digestibility of these proteins, digestion experiments!” were conducted in which the soy-bean and peanut press-cake flour combined with wheat flours was served in the form of biscuits. The experimental diet consisted of biscuits, fruit, butter, sugar and tea or coffee. Butter was served as a spread for the biseuits and lard was used as “shortening” in their preparation, accordingly the values reported for digesti- bility apply to the total fat of the diet rather than to either individual fat, but as both butter?’ and lard?® have been reported as being 97 per cent. digested, it is of interest to note the effect of the soy-bean and peanut flour diets on their digestibility. Since butter con- _stituted a half or more of the total fat of the experimental diets and since the reported digestibility for the total fat of the diets was for the soy-bean experiments 94 per cent., and 12‘ Digestibility of Protein Supplied by Soy- bean and Peanut Press-cake Flours,’’? U. S. Dept. Agri. Bul., 717 (1918), pp. 28. 13 “* Digestibility of Some Animal Fats,’’ U. S. Dept. Agri. Bul., 310 (1915), pp. 22. JUNE 23, 1922] for the peanut experiments 97 per cent., it is evident that the digestibility of butter was low- ered little if any by the other constituents of this type of diet. From the results of the many attempts that have been made to find cereals suited for eulti- vation in the semiarid regions of this country it appears that the so-called non-saccharine grain sorghums are best adapted for the pur- pose. While these cereals are extensively included in the dietary of India, China, Abyssinia and South Africa, there is little re- corded data relative to their digestibility. Ac- cordingly digestion experiments were made to secure information concerning their value for human nutrition. Of the many non-saccharine grain sorghums which may be grown in the semiarid regions four, Dwarf Kafir, Feterita, Milo and Kaoliang, were chosen as typical. To determine the effect of cooking, ete., upon digestibility, experiments with the non-saccha- rine sorghums prepared in a variety of forms have been made by the writer but for the dis- cussion here only those in which the sorghums were cooked and served as a mush will be con- sidered since in these diets butter constituted practically the entire fat content of the diet. In this type of digestion experiments!* with the grain sorghums the diet consisted of the cereal cooked as mush, apple sauce, butter, sirup, sugar and tea or coffee if desired. As may be noted from the above table the results of the digestion experiments with the non- saccharine sorghums show that their proteins are very incompletely absorbed by the body, due probably to the proteins being inclosed in the very tough cellular structure of the cereal. This coarse, rough, cellulose also may increase peristalsis to such an extent that the diet passes more rapidly than normal through the alimentary tract. If this theory is tenable it may also explain the lowered digestibility of butter, which was for the kafir experiments 92 per cent., for those with feterita 92 per cent., for those with milo 92 per cent., and for those with kaoliang 90 per cent. For a long time considerable attention has 14 “Studies on the Digestibility of the Grain Sorghums,’’ U. 8S. Dept. Agri. Bul., 470 (1916), pp. 30. SCIENCE 663 been given to the desirability of including or excluding wheat bran in milling wheat flours. Inasmuch as the annual per capita consump- tion of wheat?® is approximately five bushels this question assumes considerable importance, and among the factors to be considered in ar- riving at an intelligent solution of the problem is the extent to which the bran is digested by the human body. To obtain data in this con- nection a number of digestion experiments were made with coarse unground wheat bran and bran which had been ground to resemble flour in fineness. In these experiments!® the bran was incorporated in a_ gingerbread and served in conjunction with potato, fruit, butter, sugar, and tea or coffee. As in the soy-bean and peanut flour experiments, lard was used as “shortening” in preparing the gingerbread and butter was served as a spread for the bread. Hence the values reported for the digestibility of fat refer to total fat of the diet. However, since a large portion of the total fat consumed was butter and since in the fine wheat bran experiments the total fat was 95 per cent. digested and in the unground bran experiments it was 94 per cent. digested, it is evident that for practical dietetics this type of diet did not lower the digestibility of butter. According to reports’ the large packing houses use the “hard palates” of cattle, which are taken from the roof of the mouth of beef animals, in the manufacture of potted meats and sausage in amounts varying from 2,500 Ibs. to 6,000 lbs. monthly. Since chemical analysis showed that hard palates contain ap- proximately 20 per cent. of protein it was de- cided to determine to what extent this protein was digested by the human body and seven digestion experiments'’ were made in which the ration consisted of potato, crackers, butter, 15 U. S. Dept. Agri. Bur. Crop Estimates Rept., 3 (1917), No. 10, pp. 99. 16 ‘‘Hixperiments on the Digestibility of Wheat Bran in a Diet without Wheat Flour,’’ U. S. Dept. Agri. Bul., 751 (1919), pp. 20. 17‘ Digestibility of Certain Miscellaneous Ani- mal Fats,’’ U. 8. Dept. Agri. Bul., 613 (1919), p. 8. 18 ‘¢Digestibility of Hard Palates of Cattle,’’ Jour, Agri. Research, 6 (1916), No. 17, pp. 641- 648. 664 sugar, tea or coffee and the hard palates served in the form of meat loaf. Butter was used in the preparation of the meat loaf and it was also served as a spread for the potatoes and crackers. From the results of the digestion experiments with the hard palate it was found that the total fat of the diet was 94.6 per cent. digested. Since the greater portion of the fat consumed was butter this figure is virtually that for the butter included in a protein rich diet—an average of 131 grams of protein was ingested daily by men employed at seden- tary occupations. This should be sufficient indication that butter is very completely ab- sorbed when eaten in conjunction with a high protein diet of this character. SUMMARY From the foregoing results of numerous digestion experiments it is evident that dairy butter is very completely utilized by the human body. In those diets in which the accessory foods were very nearly if not entirely absorbed by the human body, butter was found to be practically completed digested. When coarser materials, particularly those which provided considerable refuse, were included in the diet it was found that butter was somewhat less completely absorbed by the body. The general conclusion to be drawn from the results of the digestion experiments cited above is that butter eaten in conjunction with ordinary food mate- rials is very completely digested and that for the diets studied, the nature of the diet does not produce a marked difference in the amount of butter absorbed by the human body. ArtTHurR D. HoLMEs RESEARCH LABORATORIES, THE E. L. Patou Co., Boston, Mass. ARE SCIENTISTS ENCOURAGING POPULAR IGNORANCE? I HEARTILY agree with the view of Mr. Halsey that readers of Science should become familiar with the anti-metrie case as presented in the recent report of the National Industrial Conference Board, The Century Company, $2.00. This report gives the pro-metric argu- ment as well as the anti-metric argument and SCIENCE [Vou. LV, No. 1434 is, therefore, signed by the metrie members of the committee, but not as Mr. Halsey states, “because they could not do otherwise.” Scien- tists do not need to be told the pro-metric argument, but they should know the character of the arguments advanced by the so-called American Institute of Weights and Measures against the metrie system, Mr. Halsey being their paid commissioner. Beyond quoting them at length no comment of mine is neces- sary. For years.... the minds of children have been trained to believe in it (the metric system) as the only scientific system certain to become universal. Children leave school imbued with the metric fallacy. . . . Editors of newspapers know- ing practically nothing about the subject have aped the schools and colleges, taught the fallacy and increased the ignorance. In the encourage- ment of the popular ignorance lies the chief danger to our established standards. p. 193. Advocates of the English system deny most emphatically that there is amy demand worth serious consideration in favor of a change to the metric system in the United States. The deduc- tions drawn from lists of names presented by the metric advocates ... are wholly fallacious and misleading. . . . If this is the best the pro-metrics ean show, only 60,000 to 80,000 people in the United States out of a population of one hundred millions—less than one tenth of one per cent. of the whole—favor a change. Such a demand... could be accounted for by the scientific group in this country, which comprises about this propor- tion of the population and is known to advocate the metric system. . . . The propaganda in favor of the metric system has emanated from one or two propaganda organizations working for the purpose, which have spread broadeast throughout the United States literature of an essentially misleading character. ... The prominent indi- viduals most frequently quoted as favoring the metric cause are not industrialists and business men, but such professional men as teachers, doc- tors, inventors and others who are interested chiefly in the scientifie aspects of the question and have nothing of material value at stake or have espoused the cause as fallaciously represented by metric propagandists without having given due consideration to the practical side of the issue. p. 192. We note that the American Association for the Advancement of Science, the American JUNE 23, 1922] Chemical Society, ete., have repeatedly passed strong resolutions in favor of the metric system and if we have been duped it is time to know it, because scientific men and teachers do have something at stake in the prosperity of America. We should be informed as to who these propagandists are who are spreading ignorance, what their motive is, and convincing evidence should be given and not merely dog- matic affirmations. Practically all the real sentiment in favor of a change... comes from teachers, scientists, some engineers and from a few manufacturers making refined instruments or other articles re- quiring a minuteness of measurement. p. 194. Science stands in a unique position. Its methods are ever changing and are easily changed. . . The number of persons and interests involved in the field of scientific activity are small compared with those involved in other fields. For these rea- . .. the usefulness of parts of the metric system in scientific work and in fine instrument making can not be taken as an indication of the advisability of adopting it gradually in the United States. p. 145. In fact, it is the so-called ‘abso- lute’ or centimeter-gram-second (C. G. 8S.) system rather than the metric system which is actually employed in scientific work. p. 145. In engi- neering practice it is, as in scientifie work, a mix- ture of other units that is used and has been found of advantage in some connections rather than the metrie system exclusively. This is dem- onstrated in electrical engineering ... where a ‘mongrel system’ comprising the C. G. S. or abso- lute system, the metric system with the centimeter instead of the millimeter as a unit, and English feet, inches and square inches, is used. The units of electrical measurement, the ohm, ampere, volt and others ... are not intrinsically more metric than English. p. 147. Whether the absolute system bears the stigma of a “mongrel” system because of the use of the centimeter instead of the millimeter or because of the character of the gravitation con- stant or because there are 60 seconds in the minute is not clear, but it is hardly an argu- ment against the adoption of the metric system in any ease. English measures and weights are no _hap- hazard modern invention, but have come down to us from prehistoric times. p. 4. This will be news to many who have been led sons, SCIENCE 665 to suppose? that the English yard has been recently established on the basis of the standard meter, replicas of which are kept by the U. S. Bureau of Standards. But the report says: In fact, the Anglo-Saxon measures of length down to the present have remained on the same basis as is given in the statute of Edward II (1824) where a statement in statutory form of what has since become the well-known rule that ‘three barley corns round and dry make an inch, Eten) “pslo: “‘The .organic growth and selection of the fittest units in the English system make it infinite- ly better adapted to different uses than the metric system. p. 138. In short, from every angle, the metrie system is devoid of the English sys- tem’s handiness and convenience; its units are either too large or too small for general every- day requirements. ... The character and names of its units are so tied in with every-day experi- ence that they are readily learned and retained; and the features just mentioned make the English system, as compared with the rigid and inflexible metric system, much more comprehendible to the average mind, and more convenient, adaptable, and comprehensive in filling the needs a system of weights and measures is called upon to fill. p. 140. The current extensive use of decimals in con- nection with English units in modern ealeulations has made the work of computations in that system as easy as in the metric system. The rapid devel- opment and extensive use ot calculating machines, slide-rules, ete., has . . . enabled computations of whatever kind to be made with equal ease in any system, so that the metric and English systems have in present practice been put on the same footing in this regard. ... Supporters of the English system deny that there would be any saving of time through the more general use of the metric system in the schools. p. 143. 1U. S. Bureau of Standards Bulletin 1, 380 (1905). ‘*History of Standard Weights and Measures of the United States,’’ by L. A. Fischer. The United States yard and the British imperial yard were found to differ in length by one ten- thousandth of an inch, but the imperial yard differs in length from its authentic copies by amounts which are at least as great as this. Con- sequently, it was hopeless to obtain the exact length of the yard and on April 5, 1893, the meter was taken as the standard unit of length for the English system in the United States and contain- ing exactly 39.37 inches. 666 The same argument in England is made in re- - gard to Wnglish money. The English system... has been found ac- ceptable to the great majority of the Latin- American importers and the imports into these countries consist in preponderant degree of manu- factured products into which the English system of weights and measures is definitely incor- porated,’’ in spite of those countries being metric. p- 158. ‘‘Of the millions of dollars worth of ma- chine tools which . . . have (been) sold to France and Germany, the great majority have been sold without request or suggestion that any of the dimensions be made in accordance with the metrie system. p. 159. It would be impossible gradually to substi- tute new metric standards and equipment for the old as the latter wore out without catastrophic confusion to industrial processes through a pro- tracted period. Even if the change were made suddenly, ...a long transition period fraught with confusion and disorder would inevitably follow. p. 175. The proposal actually made by scientists that as far as possible metric designations be used for our existing English standards the report dismisses briefly by saying that it is impractical and in any event would be quite pointless because it could hardly be considered an adoption of the metric system. p. 175. Of the well-known case of the Baldwin Loco- motive Works building locomotives for Russia purely on metric specifications without chang- ing their equipment, or working force or suf- fering any inconvenience or delay, the report says: If we continue to make equipment to existing standards and merely apply metrie designations as was done in the case of the ‘metric’ locomo- tives built by the Baldwin Locomotive Works, this would be neither the adoption nor the use of the metric system. It would merely be ex- pressing in terms of the metric system, with which the English is incommensurable, an existing stand- ard dimension which is integral and exact in the English system. Such a change, it is held, besides being quite meaningless, would, if feasible, simply introduce confusion and error through calling things by wrong names. p. 176. So the report proceeds to tell all of the dire calamities that will certainly befall us when the befuddled teachers and scientists have their way over the practical every-day business man. SCIENCE [Vou. LV, No. 1434 No possible advantages could result from a change to the metrie system, but on the contrary, through such a change Great Britain and the United States would lose the vast trade they now possess with non-metric countries and with respect to metric trade they would surrender their ad- vantages to such metric countries as France and Germany. p. 160. In spite of Mr. Halsey’s statement given above that products incorporating the English system can be used in countries which have adopted the metric system, it appears that if we adopted the metric system we could not do the same. Some conceptions of the difficulties which would be involved in such a destruction of standards is given in the following: ... All rules, tables, formule, used in calculations involving measures of length. All drawings of manufactured articles. All measuring scales and measuring tools, calipers, verniers, ete.... All machine tools, leading screws of lathes, . . . locomotives, cars, railroads, and their appurtenances, all marine and station- ary engines, all ships. p. 177. We can not regard the use of both systems on the same machine as a thing to be tolerated, much less deliberately en- couraged. p. 179. The man who can estimate or indicate in words the value of mechanical standards to this country does not live. The cost of attempting to change air-brake hose couplings is not represented by the value of the tools for making the couplings in the Westinghouse Works, but by the infinite confusion of the railroads in getting from one standard to another. p. 187. Finally the report attempts to show that whereas every civilized country except Great Britain and the United States is metric, this is only nominally the ease. The statement that the countries named (France, Germany, Norway, Sweden, Belgium, Switzerland, Italy, Japan, the Central and South American countries, ete., and the Latin acquisi- tions of the United States) customarily employ the metric system is a pure assumption. No eyvi- dence of this is submitted, while, on the contrary, all available evidence shows that in some of these countries the system is used but little, and in none of them is it universal. p. 168. Hence the report suggests that a conference of Great Britain, the United States and other countries be called to study care- fully all natural systems of weights and measures JUNE 23, 1922] with a view to a more complete standardization of the inch and the foot the world over and to draft legislation ... legalizing it in various countries as a world standard along with, if not superseding the metric system. p. 211. The reader is referred to the report to see that the true spirit of the argument of the report has been preserved and also to get tke pro- metric side. Such a tissue of deliberate misrepresentation needs merely to be presented to scientific men for its refutation line upon line. Were it true that American scientists and teachers are spreading ignorance, this report would deserve to be a “best seller.” But the challenge which it contains should not go unmet. The Council of the American Chemical Society at its recent meeting voted to ask the various scientific, edu- cational, engineering, medical and pharma- ceutical societies to send representatives to the Pittsburgh meeting of the society in September to consider what further steps can be taken toward the gradual introduction of the metric system. Here is an opportunity to answer the challenge. The best answer to Mr. Halsey’s contention that it can not be done is that 7t 7s being done. There has just come to hand the current schedule of chemicals of the national government, which is class 4, which has practically all pure chem- icals listed in metric units only. Henceforth all pure chemicals appearing on the general schedule of supplies will be listed and pur- chased entirely in the metrie system for the six- teen bureaus of the government. In a volume which has just come from the press entitled Metric System for Engineers, written by Charles B. Clapham, a London engi- neer, the author gives an unbiased answer to many of the anti-metrie arguments. For ex- ample, he says: All the metric serews likely to be required can. be cut on the usual English and American lathes, well within the accuracy required for manu- facturing purposes, if one additional change wheel is provided. p. 33. He says significantly, p. 148: In considering the cost and inconvenience aspect, it is to be feared that many false objec- tions have been put forward; ete. SCIENCE 667 He notes that a hundredweight contains 112 pounds, that a “stone” if used in weighing potatoes consists of 14 pounds, but when weighing butcher’s meat contains~ only 8 pounds! This is far surpassed, however, by the complexity of the United States bushel. The use of the metric system is steadily grow- ing, every school-boy talking of wave-lengths in hundreds of meters. Much further informa- tion on metrie progress is given in an excellent work on World Metric Standardization pub- lished by the World Metric Standardization Council of San Francisco. The Valve World for May, 1922, states: More than 215 member organizations of the Chamber of Commerce of the United States have gone on record in favor of gradual metric stand- ardization. More than 15,000 manufacturers and engineers have petitioned Congress to enact metric standards legislation, and these represent concerns capitalized at several billions of dollars. The states of Maine, Connecticut, New Hampshire, Utah, Illinois, California, North Dakota and Tennessee have officially memorialized Congress to adopt the metric system as the sole system of weighing and measuring for the benefit of all the people of the United States. One is reminded of an old couple up in Ver- mont who went to town; and, passing a shop window, Lucy remarked, “George, why don’t you buy a new hat in place of that disgraceful old thing?” To which George replied without going inside to inquire the price of the hat he saw, “I can’t afford it. Id have to get used to a new one. Besides I like the old one and I couldn’t wear two.” Kucense C. BrncHam AMERICAN COMMITTEE TO AID RUSSIAN SCIENTISTS WITH SCIENTIFIC LITERATURE Russian scientists have been almost com- pletely cut off from access to western Huropean and American literature since 1914. This iso- lation, coupled with great physical hardships, is naturally interfering with the progress of their work, although it has by no means en- tirely put a stop to it. Through many sources appeals are coming from Russian botanists, zoologists, chemists, 668 physicists, geologists, engineers and others for the recent literature in their respective fields. The craving of these men for contact with the rest of the scientific world is very great. At various times scientific groups in this country have suggested the desirability of sending lit- erature from this country to Russian scientists. These suggestions have now resulted in the formation of an American Committee to Aid Russian Scientists with scientific literature. The committee has arranged with the American Relief Administration, of which Mr. Herbert Hoover is chairman, to receive the literature collected by the committee and assume the entire care and cost of its overseas transporta- tion and delivery to the distributing agency in Moscow. The literature will be distributed in Russia among the universities, scientific societies and individual scientific investigators by a special committee representing the Academy of Sci- ences and other recognized Russian scientific organizations in cooperation with the American Relief Administration which has representa- tives in Moscow, Petrograd, Kiev, Kharkov, Kazan and other university and academie centers. The American Committee to Aid Russian Scientists is a voluntary and temporary organ- ization of scientific men. Its activities will continue only until the regular channels for the shipment of scientific literature to Russia are reopened. It has no funds for the pur- chase of scientific books or scientific periodicals. It must appeal, therefore, to the generosity of the scientific societies of America, government and state scientific bureaus, individual scien- tists and publishers of scientific books. The committee desires chiefly to obtain scien- tifie books, scientifie periodicals, authors’ re- prints, publications of government and state scientific bureaus, scientific institutions and uni- versity presses which are of an original scien- tific character or contain technical information, and which have appeared since 1914. There is in Russia a fairly large number of scientific institutions. It is out of the question at the present time to undertake to supply ade- quately all those institutions with literature, but the committee hopes to provide at least s1x copies of each publication, since it feels that SCIENCE [Vou. LV, No. 1434 this number may meet at least the more urgent needs of the Russian centers of scientific en- deavor at Moscow, Petrograd, Kazan, Kiev, Odessa and a few other principal university cities. If more than six copies can be spared, so much the better. On the other hand, if this number should be burdensome, a smaller num- ber of ‘copies will be of service. The committee has at its disposal only a limited fund to cover the necessary clerical work. It will, therefore, appreciate it if the contributors of literature will cover the cost of its transportation to New York, from which point all cost of handling and shipment will be borne by the American Relief Administra- tion. The committee hopes that the response to this request will be whole-hearted and universal. The assistance that American scientists can give to the Russian scientists who are in distress, besides being a good Samaritan act, will be a real contribution to the progress of science. It may also be the means of re-establishing the normal exchange of scientific results between the Russian and American scientists, and will be a fine manifestation of the cooperation of men in science throughout the world. Contributors should send, in triplicate, with each consignment a list of the publications for- warded by them. These lists, together with all letters containing advices of shipments, express and shipping receipts, should be addressed to the American Relief Administration, Russian Scientific Aid, 42 Broadway, New York, N. Y. The publications themselves should be sent by express, or, if very heavy, by freight, to the American Relief Administration, care of Gertzen Company, 138 Jane Street, New York, N. Y. Requests for further information should be sent to the American Committee to Aid Russian Scientists, 1701 Massachusetts Avenue, Wash- ington, D. C. Vernon KxLoae, Chairman L. O. Howarp, Davin WHITE, RaPHAEL ZON, American Committee to Aid Russian Scientists with Scientific Literature JUNE 23, 1922] SCIENTIFIC EVENTS THE AGITATION AGAINST THE TEACHING OF EVOLUTION Proressor J. V. DeNNEy, president of the American Association of University Professors, addressed on June 14 the following letter to the moderator of the conference of the North- ern Baptist churches meeting in Indianapolis: As president of the American Association of University Professors, I desire to call attention to the peril confronting our higher institutions of learning at the present time because of the ‘‘ Fun- damentalist’’ or ‘‘anti-evolution’’ movement which has appeared in two state legislatures and in the constituencies of several colleges controlled by or affiliated with the religious denominations. Letters from presidents and professors indicate widespread anxiety lest the cause of higher edu- cation suffer serious injury through attempts at coercive measures, interfering with the professor’s duty to teach the truth of his subject as deter- mined by the body of past and present laborers in his own field and as confirmed by his own con- scientious studies and researches. The chief injury is not merely to the professor who loses his position or to the particular institution that sacrifices a permanent aim to a passing fear. It is in the degradation of the office of teacher; in the establishment of distrust and suspicion in the publie mind towards all colleges and universities ; and in the immediate loss to both church and state of strong forees for good through the slack- ening of devotion and enthusiasm and the encour- agement of casuistry, subtlety and insincerity among those who are ealled to teach with an eye single to truth. The colleges controlled by or affiliated with religious bodies are public institutions in the sense that they solicit and receive students on terms common to all good colleges. They impose on applicants no political or religious tests. They forewarn the public of no doctrine in history, economics, literature and the sciences that is essentially at variance with the body of free and aecepted teaching in these departments of learn- ing throughout the country. Their professors co- operate in the work of all of the learned societies, and are bound by the code of honor in scientific research and by the obligation of scrupulous hon- esty of statement in teaching. Any invasion of this high obligation is an attack on manhood in teaching and destructive to real education. Any college or university, whatever its founda- SCIENCE 669 tion, that openly or secretly imposes unusual re- strictions upon the dissemination of verified knowledge in any subject that it professes to teach at all, or that discourages free discussion and the research for the truth among its pro- fessors and students will find itself shunned by professors who are competent and by students who are serious. It will lose the best of its own rightful constituency and will cease to fulfill its high ministry. The same results, disastrous to true edueation, will follow whether the restric- tions are adopted voluntarily by the college itself, or are forced upon its administrative officers by the state legislature, an ecclesiastical body or by powerful influence operating through trustees. The question of legality and of good motive is also irrelevant so far as moral and educational results are concerned. The five thousand members of the American Association of University Professors in active service in some two hundred colleges and univer- sities of the United States are of one mind on the fundamental necessity of preserving the integrity of the teaching profession. They realize that their work is a sacred trust that can be ful- filled only in freedom of conscience, loyalty to the truth, and a profound sense of duty and of per- sonal responsibility. They claim the support of all good Americans whatever their creed in re- sisting measures that will prove ruinous to our institutions of higher learning. THE PROPOSED BOMBAY SCHOOL OF TROPICAL MEDICINE! We learn from India that the government of Bombay has declined to proceed with the project for establishing a School of Tropical Medicine at Bombay. The news is not a little surprising, for the government of Bombay had very definitely expressed its intention to estab- lish the school, and Sir Dorab Tata had prom- ised to contribute a lakh of rupees a year towards the expenditure which was to be in- curred. The Bombay School of Tropical Med- icine was to have been opened on April 1 last, and all arrangements were made for this pur- pose. It was only at the last moment that the Bombay government determined to eut out of the budget the whole sum allotted to the school, and issued orders that the scheme should not be proceeded with. In consequence Sir Dorab 1From the British Medical Journal. 670 Tata has withdrawn his offer, which was con- tingent on the government founding a school of tropical medicine at Bombay. As will be seen, matters had gone very far before the government of Bombay repudiated the under- taking it had given. They had gone even further than we have so far indicated, for rather more than a year ago the Royal Society was asked to select professors for the chairs of clinical medicine and therapy and of proto- zoology in the school. The Royal Society, act- ing through its Tropical Diseases Committee, issued advertisements widely—in this country, in the dominions and in America. From among the applicants it selected two, one for each chair. The protozoologist selected was an American, but he, we understand, subsequently, on private grounds, withdrew his acceptance. The successful applicant for the other chair, an Australian (Professor N. Hamilton Fair- ley), resigned his appointment in Australia to become Tata professor of clinical medicine in the Bombay School. The government of Bom- bay has now given him notice that it will dis- pense with his services on Oetober 31. The situation thus brought about is obviously most unsatisfactory, and the matter can not be allowed to rest where it is. When the Royal Society acts for the Indian government and invites applications for positions on definite terms, the candidates selected assume that a written contract is superfiuous. Clearly the Royal Society has been placed in a very false position. At the request of the government of India it undertook to select suitable persons to occupy the two chairs. With the authority of the government of Bombay the Royal Society, through its committee, issued advertisements inviting candidates to come forward and stating the terms and conditions of the appointment, which was to be in each case for a term of five years in the first instance, “but may be ex- tended by the government.” It is now left in the lurch by the government of Bombay, which professes to find that it has miscalculated its resources and is not in a financial position to carry out its bargain. The Royal Society will, we feel sure, have the support of public opin- ) ion in any action it may take, and the medicaY profession in particular will be anxious to see SCIENCE [Vou. LV, No. 1434 that justive is done to Professor Fairley, if not by the government of Bombay, then by the government of India, which can not absolve itself from xesponsibility for the acts of the provincial government. We understand that a new central research institute for India may shortly be established, probably at Delhi; this may afford the government of India a way out of the false position in which it has been placed by the government of Bombay. THE ROYAL ACADEMY OF BELGIUM1 THE Royal Academy of Belgium celebrated the one hundred and fiftieth anniversary of its foundation on May 23 and 24 in the presence of a large number of its members and of dele- gates from other academies and learned insti- tutions. On the Wednesday afternoon, May 24, numerous congratulatory addresses were presented at the Palais des Académies, and the members and visitors were afterwards received at the Hotel de Ville by the Mayor of Brussels, M: Adolf Max, and his aldermen, MM. Steens, Vande Meulebrouck and Coelst; a reception was held at the Palais des Académies in the evening, where an exhibition of medals and portraits connected with the history of the academy had been arranged. The anniversary celebration itself was held in the large hall of the academy on the afternoon of May 25 in the presence of the king, the minister of arts and science, M. Hubert, formerly rector of the University of Liége, Cardinal Mercier, and the English, French, Dutch, Spanish and Japanese ambassadors. The president, M. Vauthier, in an address of welcome, briefly sketched the history of the academy and its influence on the intellectual development of Belgium. The min- ister of justice, M. Masson, tendered the con- gratulations of the Belgian government, and Monseigneur Baudrillart spoke in the name of the Institut de France. Sir William B. Leish- man, as vice-president of the Royal Society, represented the British universities and learned societies; he referred to the activities of Belgian bacteriologists and paid a high tribute to the work of M. Jules Bordet. MM. Lameere, Pirenne and Verlant, representing respectively 1From Nature. JUNE 23, 1922] the classes of science, of letters, and moral and political sciences and of fine arts, contributed summaries of the activities of their several sec- tions of the academy. Later the visitors were received by the king and the queen at the Palace of Laeken, and in the evening a banquet was held at the Hotel Astoria. THE ROYAL GEOGRAPHICAL SOCIETY Av the annual meeting of the Royal Geo- graphical Society on May 29 Lord Ronaldshay was elected president of the society in succes- sion to Sir Francis Younghusband, and the following were elected vice-presidents: Sir Francis Younghusband, Colonel Sir Charles Close, Mr. D. W. Freshfield, Lord Edward Gleichen, Sir T. H. Holdich, and Sir J. Scott Keltie. The royal medals were presented, the found- er’s medal being awarded to Lieutenant Colonel C. K. Howard-Bury for his distinguished services in command of the Mount Everest Ex- pedition, 1921, and the patrons’ medal to Mr. Hrnest de K. Leffingwell, Los Angeles, Califor- nia, for his surveys and investigations on the coast of northern Alaska. Mr. Oliver B. Har- rian, first secretary at the American embassy, on behalf of Myr. Leffingwell, who could not attend, accepted the patrons’ medal. The other awards of the council were made as follows: The Victoria medal to Mr. J. F. Baddeley, for work on the historical geography of Central Asia; the Murchison grant to Mr. Charles Camsell, deputy minister of mines, Canada, for explorations and surveys in north- ern Canada (accepted, on Mr. Camsell’s behalf, by Mr. Peter Larkin, high commissioner for Canada); the Back grant to Khan Bahadur Sher Jang, for surveys on the Indian frontier and in adjacent countries; the Cuthbert Peek grant to Mr. F. H. Melland, for explorations in Northern Rhodesia; and the Gill Memorial to Mr. A. R. R. Boyce, of the Sudan Survey, for triangulations in the Sudan. The address of the retiring president was chiefly concerned with the Mount Everest Hx- pedition. SIGMA XI AT UNIVERSITY OF KENTUCKY Tue thirty-seventh chapter of Sigma Xi to be known as the Kentucky Chapter was SCIENCE 671 installed at the University of Kentucky on May 5. The petitioning group numbered seventeen. These were already active members of the society, having been elected to such while connected with other educational institutions. The installation exercises were conducted by Dr. Henry B. Ward and Dr. Edward Ellery, president and secretary of the national organ- ization. The charge to the chapter was deliy- ered by Dr. Ellery and the symposium was — conducted by Dr. Ward. The following officers were elected: President: Dr. Paul P. Boyd Vice-president: Dr. W. D. Funkhouser. Secretary: Professor E. S. Good. Treasurer: Professor E. N. Fergus. A banquet was held in the evening at the Phoenix Hotel, Lexington. The chapter had as its guests Dr. Ward, Dr. Ellery, Judge R. C. Stoll, chairman of the executive committee, University of Kentucky, Dr. Glanville Terrell, chairman of the Graduate School, Professor W. S. Anderson, president of the Research Club, Dr. Thomas B. McCartney, acting-presi- dent of Transylvania College, Dr. Robert C. Hinton, of Georgetown College, and Dr. Frank L. Rainey, of Center College. Besides those of the Kentucky Chapter pres- ent at the banquet were the following members of the society resident in Lexington: Dr. A. F. Hemmingway, Dr. J. A. Gunton, Professor Mary Brown, Dr. J. A. Herring and Dr. Philip P. Blumenthal. Dean P. P. Boyd acted as toastmaster and toasts were responded to by Judge Stoll, Dr. Ward, Dr. Ellery and Dr. McCartney. DEAN OF THE SHEFFIELD SCIENTIFIC SCHOOL Tue Yale Corporation has elected as dean of the Sheffield Scientific School in succession to Director Russell H. Chittenden, Professor Charles Hyde Warren, since 1900 a member of the faculty of the Massachusetts Institute of Technology, where he has been professor of mineralogy since 1915. The dean-elect of the Sheffield Scientific School served as an assistant in chemistry and mineralogy in that school from 1896 to 1900, studying in the Graduate School during this period and receiving the degree of doctor of 672 philosophy in 1899. In addition to his teach- ing at the Massachusetts Institute of Tech- nology he has been extensively occupied with expert work for various mining and manufac- turing chemical concerns. He also carried out a large quantity of research work of a purely selentifie character. Professor Warren is a member of the Amer- ican Academy of Arts and Sciences and of the Geological Society of America. He is also a member of the Yale Chapter of the honorary society of Sigma Xi. His published works inelude “A Manual of Determinative Miner- alogy” (1910), and contributions to American and German technical journals. Dr. Russell H. Chittenden has been a mem- ber of the Yale faculty since his graduation from the Sheffield Scientifie School forty-seven years ago. He has been head of the Sheffield . Seientifie School since 1898, when he succeeded Professor George Jarvis Brush, first director of the school. Dr. Chittenden offered his resig- nation to be effective a year ago, but conceded to a wish that he spend another year in office until a suitable successor might be found. SCIENTIFIC NOTES AND NEWS THE joint meeting of the American Associa- tion for the Advancement of Science and its Pacific Division is being held this week at Salt Lake City. The address of the president of the Pacific Division, Dr. Barton W. Evermann, given on Thursday evening, is on “The con- servation and proper use of our natural re- sources.” At the dinner on Friday evening, Professor James Harvey Robinson gives an address on “The humanizing of knowledge.” THE gold medal of the Linnean Society of London, which is given in alternative years to a botanist and a zoologist, was this year award- ed to Professor E. B. Poulton at the anniver- sary meeting on May 24. In making the pre- sentation, the president, Dr. A. Smith Wood- ward, referred to Professor Poulton’s long labors in entomology, and his keepership of the Hope Collection at Oxford. Tue Charles P. Daly medal of the American Geographical Society for 1922 has been award- ed to Lieutenant Colonel Sir Francis Young- husband, president of the Royal Geographical SCIENCE [Vou. LV, No. 1434 Society. It has been forwarded through the Department of State for presentation at Lon- don by the American ambassador. The medal bears the inscription: “Lieutenant Colonel Sir Francis Younghusband for explorations in northern India and Tibet and for geographical publications on Asiatic and African borders of the Empire.” Rurcrers Couuece has conferred the degree of doctor of science on Mr. Thomas A. Edison. At its annual commencement held on June 6, the University of Utah conferred the honorary degree of doctor of laws on James HE. Talmage, who was formerly president of, and professor of geology in, the institution. On the same occasion the honorary degree of doctor of science was conferred on Dorsey Alfred Lyon, of the U. S. Bureau of Mines. THe University of Maryland at its com- mencement on June 10 conferred the honorary degree of doctor of science upon- Eugene Amandus Schwarz, honorary custodian of coleoptera in the U. 8. National Museum. Mr. Schwarz began official work as a specialist in beetles for the Division of Entomology under the U. S. Commissioner of Agriculture in 1878. At the commencement of the University of Pittsburgh on June 14, the honorary degree of doctor of laws was conferred upon Mr. Alfred Cotton Bedford, chairman of the board of directors of the Standard Oil Company of New Jersey. This honor was bestowed upon Mr. Bedford in recognition of his activities in the development of the American petroleum indus- try and for his foresight in the encouragement of the application of scientific research. Proressor H. O. Horman, professor of mining and metallurgy at the Massachusetts Institute of Technology, and Professor A. E. Burton, dean and professor of topographical engineering, have retired from active service. Proressor Oakes Ames has resigned as director of the Harvard Botanie Garden. It is expected that he will continue as assistant pro- fessor of botany at the Bussey Institution. Proressor H. Krarpeuin has asked to be re- leved from delivering the course on psychiatry at the University of Munich, as he wishes to devote all his energies to research on psychiatry JUNE 23, 1922] at the special institution for this purpose, which is practically his creation. RECENT appointments to industrial fellow- ships in the Mellon Institute of Industrial Re- search of the University of Pittsburgh include the following: E. R. Clark, B.A. (Yale); H. E. Dierich, A.B. (Kansas); Mare Darrin, B.S. and M.S. (Washington); O. B. J. Fraser, B.S. (Queen’s); A. W. Harvey, B.S. (Syracuse), M.S. and Ph.D (Pittsburgh); C. R. Texter, B.S. (Pennsylvania State); and B. B. Wescott, B.S. and M.S. (Pittsburgh). ALEXANDER WEINSTEIN, Ph.D., now holding the Sigma Xi fellowship and working in the laboratory of Professor T. H. Morgan at Columbia University, has been appointed to a Johnston scholarship in the Johns Hopkins University. Dr. Aues HrpuiéKa, curator of the Division of Anthropology of the Smithsonian Institu- tion, has consented to serve the Children’s Bureau of the United States Department of Labor in an advisory capacity on matters re- lated to the field of anthropology. Proressor Wituiam TRELEASE, of the de- partment of botany in the University of Illi- nois, sailed for Europe on June 3, to complete an intensive study of certain plant groups. Professor Trelease will visit herbaria at Kew, Paris, Geneva, Berlin, Stockholm and Copen- hagen. Dr. ALBERT JOHANNSEN, professor of petrol- ogy in the University of Chicago, will spend the summer in Europe, doing geological work and visiting various universities. He sailed from New York on June 21. Proressor Ouar P. JENKINS, of the State College of Washington, is to take charge of geological investigations of the coal of What- com and Skagit counties, Washington, for the State Division of Geology, Department of Conservation and Development. Haruan I. Smity, archeologist of the Vic- toria Memorial Museum of Ottawa, is at Bella Coola, British Columbia, continuing his inves- tigations into the material culture of the Bella- ceola Indians. Dr. VERNON KELLOGG, permanent secretary SCIENCE 673 of the National Research Council, gave the annual Phi Beta Kappa address at the Uni- versity of Virginia on June 13. On June 7, Dr. D. S. Jordan delivered the commencement address to the University of Denver, Colorado, his subject being “The melt- ing pot.” On June 11, Dr. H. P. Nichols, rector of Holy Trinity Church, New York, delivered the baccalaureate address at the University of Col- orado. He took as his subject “Evolution, and its highest product, man.” Proressor Ernst Fucus, of Vienna, gave a Mayo Foundation lecture at the Mayo Clinic June 9. His subject was “Syphilis and its relation to diseases of the eye.” On June 1 Dr. H. Berglung, of the department of bio- chemistry, Harvard Medical School, lectured on “The chemistry of the nonprotein nitrogen of the blood.” On June 16, Mr. Edward R. Weidlin, direc- tor of the Mellon Institute of Industrial Re- search of the University of Pittsburgh, ad- dressed the fourth annual convention of the National Lime Association on “The value of research to industrial associations.” This con- vention was held in Cleveland, Ohio. A puBLIC meeting of the British National Union of Scientifie Workers was held at Uni- versity College, London, on June 15, when an address was given by Mr. F. W. Sanderson, headmaster of Oundle, on “The duty and service of science in the new era.’”’ The chair was taken by Mr. H. G. Wells. Tue Yale Corporation has voted that the Botanical Garden shall be known as the Marsh Botanical Garden, in order that the memory of Othniel C. Marsh and of his generosity to the university may be more effectively perpetuated. Othniel C. Marsh was a graduate of Yale Col- lege in the class of 1860 who became the first professor of paleontology in the university. Professor Marsh died in 1899, bequeathing to the university his former residence, which has since been used as the School of Forestry. The Botanical Garden is connected with this school. James McManon, emeritus professor of mathematics at Cornell University, died on June 1 at the age of sixty-six years. 674 Dr. Epwarp Hauu Nicuous, professor of clinical surgery in the Harvard Medical School, died on June 12, aged fifty-nine years. Dr. W. H. R. Rivers, of the University of Cambridge, known for his work in anthropol- ogy and psychology, died on June 4, at fifty- eight years of age. Nature notes that the first meeting of the “Institut International de Chimie Solvay” was held in Brussels on April 20-27, under the presidency of Sir William Pope. It will be remembered that before the war the late M. Ernest Solvay set aside a capital sum to be ex- pended in the course of thirty years by the International Institute of Physies, and that meetings under the auspices of this institute have been held in Brussels both before and since the war. More recently M. Solvay set aside a further capital sum of one million franes, also to be expended in thirty years, for the promo- tion of the science of chemistry. The meetings of the institute are attended by delegates from different countries, the number being limited to about thirty, so that the discussions may be as free and as informal as possible. The recent meeting was devoted to the consideration of a number of those questions which affect the foundations of modern chemistry, and its pro- gram included the presentation of papers on isotopes, by Soddy, by Aston, and by Perrin and Urbain; on X-ray analysis and molecular structure, by W. H. Bragg; on the electronic theory of valency, by Mauguin; on optical activity, by Pope and by Lowry; and on chem- ical mobility, by Job. Tux Journal of the American Medical Asso- ciation, quoting from the Preusa Medica, describes the centennial of the foundation of the Aeademia Nacional de Medicinia at Buenos Aires, April 18. The rector of the university, Dr. José Arce, presided. The historical ad- dress was delivered by the president of the academy, Dr. Eliseo Canton. Among the an- nouncements made was that of the institute of experimental medicine, the first of its kind to be founded in South America. A prize of a gold medal and $5,000 was awarded to Dr. P. Belou for his “Stereosecopie Atlas of the Anat- omy of the Ear’’; a silver medal and $3,000 to SCIENCE [Vou. LV, No. 1434 Dr. C. Lagos Garcia for his work, “Human Sexual Malformations,” and a copper medal and $2,000 to Dr. F. Garzén Maceda for his “Manual of Zoopharmaecy.” A work by Dr. P. P. Rojas on the structure of the myocardium received honorable mention. Three days were devoted to the centennial ceremonies. Dr. R. S. McBripg, seretary of the Gas and Fuel Section of the American Chemical Society, announces that the new section will meet with other sections of the society at the fall meeting to be held in Pittsburgh September 4 to 9. Among the topies to be discussed will be the general subject, “Combustion,” in the form of a special symposium to be conducted under the chairmanship of Professor R. T. Haslem, of Massachusetts Institute of Technology. It will include a program of papers on chemical methods underlying fuel utilization. Officers of the section are: Dr. A. C. Fieldner, Bureau of Mines, Pittsburgh, chairman, and R. S. McBride, Colorado Building, Washington, D. C., secretary. Dr. McBride has requested that any members of the society having papers to present at the meeting of this section should forward them in full or in abstract form to the chairman or secretary or should notify these officers regarding their intention to prepare the papers. Tue following resolution was passed by the faculty meeting of Kenyon College, on May 29: “Voted that the faculty deplores agitation against the explanation of natural phenomena known as the theory of evolution, and regards such propaganda as dangerous to scholarship, education and the progress of civilization.” A airr of £10,000 has been made to aid cancer research by Mr. and Mrs. G. F. Todman, of Sydney, N. S. W., in memory of their daughter. At the request of the donors Sir Joseph Hood, M.P., has allocated the sum as follows: £4,000 to the Imperial Cancer Re- search Fund, Queens Square, Bloomsbury; £1,000 each to the Middlesex Hospital, the Cancer Hospital, Fulham Road, London, the Christie Hospital, Manchester, the MacRobert Endowment, Aberdeen University, and the Cancer Hospital, Glasgow; and £500 each to the Radium Institutes of London and of Man- chester. JUNE 23, 1922] UNIVERSITY AND EDUCATIONAL NOTES ANNOUNCEMENT is made that the residue of the estate of the late Hamilton B. Tompkins, of New York City, left in his will to Hamilton College, amounts to $650,000. TuE salary endowment fund of Vassar Col- lege has reached the sum of $3,030,000. A researcH fellowship of $1,000 for the study of orthopedics in relation to hygiene and physical education will be offered by Wellesley College, beginning in September and continu- . ing for one year. Dr. Frank I. Kern, professor of botany, has been appointed dean of the newly estab- lished Graduate School of the Pennsylvania State College. M. D. Hersey, associate professor of phys- ics, R. P. Bigelow, R. R. Lawrence and H. W. Shimer have been promoted to full professor- ships at the Massachusetts Institute of Teech- nology. Dr. Bigelow will be professor of zoology and parasitology; Professor Lawrence is a member of the electrical engineering de- partment; Dr. Shimer will be professor of paleontology. Dr. R. E. Coxer, M.S. (North Carolina), Ph.D. (Johns Hopkins), head of the division of scientific inquiry of the U. S. Bureau of Fisheries, has been elected to a professorship of zoology in the University of North Carolina. GEOGRAPHERS who received their doctorates at Chicago have recently been promoted as follows: To a professorship, Carl O. Sauer, at the University of Michigan. fessorships, Stephen §S. Visher, at Indiana University; Wellington D. Jones and Charles C. Colby, at the University of Chicago. To as- sistant professorships, Robert S. Platt and Derwent S. Whittlesey, also at Chicago. At the University of Kansas, assistant pro- fessor Curt Rosenow has been promoted to an associate professorship in psychology and Dr. Hulsey Cason (Columbia, ’22) has been ap- pointed assistant professor of psychology. Dr. Etwoop §. Moors, dean of the School of Mines of the Pennsylvania State College, SCIENCE To associate pro- | 675 has resigned, to take charge of the work in economie geology at the University of Toronto. Dr. Joun Macpuerson, lately retired from the post of commissioner of the Board of Con- trol for Scotland, has accepted for three years the professorship of psychiatry at the Univer- sity of Sydney. DISCUSSION AND CORRESPOND- ENCE OBSERVATIONS OF FALLING METEORITES To tHe Eprror or Science: The numerous recently reported occurrences of falling mete- orites are so contradictory and so at variance with what reason would lead one to expeet as to make one quite cynical concerning the value of human testimony. Few natural phenomena, it may be stated by way of introduction, are more likely to unduly excite the imagination than those attendant upon a fall of meteorites. The suddenness, the unexpected nature of the oceurrence, the light and noise, and perhaps above all the sensation of fear aroused when a solid body is suddenly projected from seemingly empty space, all have effect, and it is not surprising that accounts are widely variable—dependent upon the flex- ibility of the imagination, more perhaps than upon powers of observation. Few persons, however well trained, can look calmly and crit- ically upon the phenomena. Fewer yet can, in the brief space of time, estimate the height of the body when first seen, or note such facts as may be of service in calculating its direction and rate of progress. A peculiar feature of the case is the lack of ability on the part of an observer to locate the place of fail unless, indeed, he happens to actu- ally see it strike the ground. This is due to several causes, and, in part at least, to the low angle at which the stones sometimes enter our atmosphere, which permits a continuation of flight for some distance, even miles, beyond the point at which they seemingly must strike the earth, and in part to the fact that one is unable to correctly estimate the distance, which may be much greater than supposed. No less an experienced student and collector than the late H. A. Ward once told the writer of his 676 experience in such matters. He was sitting in front of a house oceupying a somewhat ele- vated position with reference to the rest of the town. Suddenly a meteorite appeared descending from the sky, and fell, he was sure, within a certain square on the lower level. He at once proceeded to the spot, only to find that he was mistaken but that it had fallen a “few blocks away.” At this second point the same experience was repeated, and the stone finally located some twenty miles beyond the point where he was “certain” he had seen it strike. An equally good illustration was offered in the flight of a meteorite over the city of Wash- ington on Sunday, January 12, 1919. This was first called to my attention by a man some eighty miles south of Washington who saw it, as he assured me, strike the ground within one half a mile of where he was standing. Inas- much as the meteorite had been observed pass- ing over Washington in a northeasterly direc- tion his statement was not accepted. Further reports of the fall in the immediate vicinity of the city and a few miles away were also re- ceived. Taking the direction along which the meteorite was traveling, I followed it up by correspondence for a distance of over 300 miles into northeast Pennsylvania where it became lost. The last reports received indicate that it was going in two directions at once (!) and it is very probable that it actually fell somewhere in that vicinity, nearly 400 miles from where first seen to fall. Experiences similar to the above are com- mon. In many other instances stones which were “seen to fall” have proved to be of strictly terrestrial origin. There comes a sudden flash and report, the observer goes quickly to the spot and there finding an object which had not previously attracted attention, assumes it to be a meteorite and in perfectly good faith writes some museum announcing his discovery and willingness to dispose of the same. There is probably not a museum of importance in the world that dees not annually receive from one to many announcements of this kind. The re- ceipt even of glacial boulders which were “varm when picked up” or “which set fire to the grass at the point where they fell” is not unusual. SCIENCE [Vou. LV, No. 1434 This leads to the second point to which attention need be directed—that relating to the reported temperature of the fallen body, which is often to the effect that “it was too hot to touch,” or has been the cause of fires. As in a great majority of cases it is impossible to investigate the actual temperature after the first report has been made it may be well for the moment to consider the probabilities. While the original source from which mete- orites are derived is problematical it yet seems certain that they have been wandering for an indefinite period in space and at a tem- perature of “absolute zero.” At the time of entering our atmosphere it is fair to assume they are cold throughout to a degree of which we can have no conception. During the few seconds in which they are passing through our atmosphere, they become intensely heated on the immediate surface, but these portions are immediately stripped off, and, as we have abso- lute proof, the heat never extends to a distance of more than two or three millimeters. Before striking the ground the speed of the body is so far checked that it ceases to glow and the thin film of molten material quickly congeals. Cooling of the surface, owing to the intense cold of the interior, must follow rapidly and it is questionable in the writer’s mind if a large ma- jority of the reports of the heated condition of the meteorite when found are not based upon expectation rather than fact. He even goes so far as to suggest that when it shall become real- ized by the public at large that the chances are in favor of a meteoric stone being cold rather than hot when found, it will be so reported. GEORGE P. MERRILL U.S. Nationa, Museum, Wasuineton, D. C. ORIGIN OF SOIL COLLOIDS Dr. Wuitney! has advanced an interesting theory as regards the origin of .soil colloids. He says, in part: My present view is that particles of matter derived from silicate rocks and other soil-forming minerals when they approach a diameter of .0001 mm. contain relatively so few molecules that the 1 Science, 54: 656, 1921. JuNE 23, 1922] bombardment of the water molecules in which the particle is immersed shatters the particle beyond the ability of the molecules in the solid to hold together as a solid mass. The atoms of calcium, magnesium, potassium and sodium in the molecule of the silicate would go for the most part into true solution, while the atoms of silicon, aluminum, and iron would go chiefly into colloidal solution forming the basis of the colloidal matter or the ultra clay of the soil. It should be possible for the mathematical physical chemist, from physical constants now known, to determine empirically the relative size of the particle of matter which could withstand such bombardment without complete disintegration. This is a problem which has not yet been worked out. This is one way of looking at their origin, but the results of our experimental work on soil colloids force us to adopt quite a different view. One that is not based on bombardment of water molecules, but one based largely on chemical reactions. Many soil particles are hydrated silicates which contain varying amounts of aluminium, iron, silcon, sodium, potassium, calcium, mag- nesium and other elements in smaller quanti- ties. Soil chemists claim that these particles are surrounded with a water-film, and that this film is held tenaciously. In the light of this the salts in the outer layer of these soil parti- cles are subjected to constant hydrolysis. The hydrolytic products of the soluble compounds of sodium, potassium, ete., are partly taken up by this water film by way of solution, and part of them are adsorbed by the hydrolytic insoluble products of the iron and alumina salts which form a gel casing for the soil particle, that is, there is an equilibrium of the soluble salt be- tween the water film and the insoluble gel which now surrounds the soil particle. When the soil becomes flooded as after a rain, and the water moves down through the soil, the soluble salt of the water film is partly removed by diffusing into the moving water. This destroys the salt equilibrium between the water film and the incasing gel, and, hence, some of the soluble adsorbed salt is released to the water film. This continues until most of the soluble material is leached from the outer layer of the soil particle. This leaching may be continued until the incasing hydrolytic gel SCIENCE 677 products of alumina and silica, and ferric¢ oxide may pass into colloidal solution. Not only will the freedom of electrolytes tend to bring the ineasing gel into colloidal solution but some of the soluble salts themselves or some salts that are moving through the soil under the proper hydrogen ion concentration will very much hasten their pepitization. The pepitization of the hydrolytic insoluble compounds removes the encasing gel and the soil particle is again exposed to hydrolytie action, and in this way the weathering of the silicate particles proceeds. The pepitized gel or hydrosol moves through the soil, provided the pepitization is great enough, until it en- counters a coagulating electrolyte or different hydrogen ion concentration, when it comes back as the gel and may be deposited on a soil par- ticle, or come down as a precipitate where it remains as an adsorbent and reservoir for plant food until the conditions are sufficiently changed for it to pass back into the hydrosol ; that is, the process is reversible hydrogel = hydrosol and whether it is a hydrosol or a hydrogel de- pends on the soil environment. Certain soil salts in our work have brought about a very beautiful pepitization, while other salts have brought about an equally definite coagulation. Then there are salts that lie in between these extremes. Again the same salts and same concentration have brought about both coagulation and pepitization by changing the hydrogen ion concentration. Neit E. Gorpon CHEMISTRY DEPARTMENT, UNIVERSITY OF MARYLAND A CRAYFISH TRAP In ponds and streams where crayfish are abundant they can be readily taken by means of a trap constructed as follows: A rectangular box of any convenient size, sixteen by twenty- four inches for instance, is built of one-fourth inch mesh galvanized screen wire. Into one end of this box a removable funnel of like material is fitted. This funnel should project about eight inches into the box and have a flattened opening about four inches wide and an inch and a half deep. In setting the trap 678 it should be placed in shallow water on a slop- ing bank and partially embedded in the mud or sand so that the bottom of the funnel is even with the bottom of the pond. The rest of the trap extends out toward the deeper water. A dead fish wired securely to the bot- tom of the trap makes an excellent bait. Attracted by this bait, the crayfish crawl into the trap and seem to be unable to find their way back out. A single night-set with such a trap will reward the trapper with at least a water bucket full of crayfish for laboratory use, or for the more immediate purpose of supplying the camp with an exceedingly de- lectable breakfast. H. C. O’RoKE SoutH Daxota State CoLLecez, Brooxines, SournH Daxora SPECIAL ARTICLES NOTE ON THE RELATION BETWEEN THE PHOTIC STIMULUS AND THE RATE OF LOCOMOTION IN DROSOPHILA Ir is a fact demonstrated by many investi- gators that Drosophila melanogaster (ampelo- phila) is negatively geotropic and positively phototropic. In addition it is also known that light acts as a kinetic stimulus as well as a directive one. When the individual is illum- inated, therefore, its movement is determined by the three factors operating simultaneously. If light acts in opposition to gravity the rate of upward crawling of the fly is lowered; and if light acts with gravity the rate is increased. Since the stimulus of gravity is always con- stant, and the photokinetic stimulus constant within wide limits, the rate of upward crawling is a measure of the effect of the phototropice stimulus. Definite quantitative results have been ob- tained by measuring with a stop-watch the time necessary for wild flies to crawl to the top of a glass cylinder under three different intensities of light. Illuminated from above with a light of 1,500 candle meters the time taken for 50 per cent. of the experimental flies to reach the top (a distance of 172 mm) was found to be 6.17 seconds. With an intensity of 750 ¢.m., 7.6 seconds; and with an intensity of 75 ¢.m., SCIENCE [Vou. LV, No. 1434 10.89 seconds. Each of these determinations is the average of 50 trials with 87 animals selected from five different cultures. The age of the flies varied between six and nine days. Under the illumination of a ruby lamp giving only enough light to enable observation, the time consumed in reaching the top was 11.3 seconds. There is then a definite relationship between the intensity of illumination and the rate of movement, which may be expressed by the Weber-Fechner law, as was done in the case of the Japanese beetle.1 Figure 1 ex- “RLIGMALN dO MLTUVBOT TIME IN SECONDS. Fic. 1. Two graphs indicating the relation be- tween light intensity and the phototropic orien- tation of Drosophila. The circles are points, at 100 which Rate = lotted Reaction time in seconds’ # against the log of the intensity. The solid dots show the reaction time plotted against the intensity. presses this relationship. The broken line is obtained by plotting the logarithm of the inten- sity against the rate of locomotion, where rate equals 100 divided by the reaction time in sec- onds. From.this graph it may be concluded that the sensation is proportional to the log- arithm of the intensity of the stimulus. The continuous line is obtained by plotting the reae- tion time in seconds against the intensity of light and leads to the same conclusion. It was found by McEwen? that the mutants 1 Moore, A. R., and Cole, W. H.: ‘‘The response of Popillia japonica to light and the Weber- Fechner law,’’ Jour. Gen. Physiol., 3: 331, Jan- uary, 1921. 2 McEwen, R. 8.: ‘‘The reactions to light and to gravity in Drosophila and its mutants,’’ Jour. Ezp. Zool., 25: 49, February, 1918. JUNE 23, 1922] of Drosophila known as white and vestigial show variations from the reactions of wild flies to light. He decided that the vestigial flies are not oriented by light, a conclusion appar- ently verified by experiments in which wild flies, whose wings had been removed, were used. The white race oriented positively to light, but with less regularity and precision. In my ex- periments it was also found that white flies are less precise in their photic orientation, it being many times impossible to secure satisfactory readings on 50 per cent. of the individuals, since after reaching the top of the cylinder some would crawl back to the bottom, even under an intensity of 1,500 em. No results, therefore, are presented for the whites. In the ease of vestigial flies it was found that a me- chanical factor retarded orientation. When the glass cylinder was used for these flies it was discovered that the reason they did not reach the top was because they continually lost their foothold, when part way up, and fell back to the bottom. This also happens with wild flies whose wings are normal, but immediately the wings are spread and the animal secures a new foothold very near where he was before. The upward movement is then continued, very little time having been lost. This difficulty with vestigials was removed by lining the cylinder with very thin Japanese rice paper. This may easily be done by moistening the paper, press- ing it against the glass and allowing it to dry. With paper-lined cylinders the vestigial flies are strongiy phototropie and reach the top in almost the same time as wild ones. The results are as follows: with illumination of 1,500 candle meters the time was 6.81 seconds; with 750 e.m., 7.92 seconds; and with 75 ¢m., 11.1 seconds. In darkness the time for vestigials was 12.2 seconds. From this data it is evident that vestigial Drosophila is positively photo- tropic, the degree being only shghtly less than in wild flies, as measured by the rate of locomo- tion. Some of this difference is undoubtedly due to the aid rendered by the flying of the wild individuals, although, as far as possible, all cases of extended flight were omitted from the averages! Tt may be stated, therefore, that the effect of light on the locomotion ot Drosopiila me- SCIENCE 679 lanogaster is related to the intensity of the photic stimulus according to the Weber- Fechner law, and secondly that the race of flies known as vestigial is positively photo- tropic, and may be demonstrated as such if the animals are given a rough surface on which to crawl. Wiuuiam H. Cote Biology LABORATORY, Lake Forest CoLurce, Lake Forest, IL. THE STRUCTURE OF BENZENE THe writer has shown, in his thesis for the master’s degree? and in an article soon to be published, that the benzene model first pro- posed by Korner,? and later advocated by Marsh,? Vaubel,t and others, interpreted in the light of the Lewis theory of the atom,° has a sound theoretical basis. By applying a theory of conjugation resembling in many respects that presented by Erlenmeyer, Jr., in 1901,° all objections to this benzene structure but one—that ortho and meta di-substitution products should, according to the theory, give stereoisomers which have not yet been re- solved—have been removed. In this model the six carbon tetrahedra have their bases all in the same plane, the hydro- gen atoms and the points of the tetrahedra to which they are bonded being alier- nately above and below this plane. There are six electrons grouped around the center of each hexagon, and two at each of the hexagon corners and en the centerlines between each hydrogen and the carbon to which it is-bonded. In a paper written in October, 1920,’ the 1 Written in April, 1920; on file in the Library of the University of California. 2Gaz. chim., 4: 444 (1874). 3 Phil. Mag., 26: 426 (1888). 4J. prakt. Chem., [2] 44: 137 (1891); 49: 308 (1894); 50: 58 (1894. ‘‘Lehrbuch der theoret- ischen Chemie [J. Springer, Berlin, 1903],I, 468. 5 J. Am. Chem. Soc., 38: 762 (1916). 6 Ann., 316: 48, 71, 75 (1901). 7 This paper was revised and submitted for pub- lication in April, 1921. It is expected that it will soon be published. 680 author has shown that the structure of graphite, as determined by X-ray analysis,® is exactly what would be obtained if it were built of layers of benzene hexagons of the type just described, the carbon-hydrogen bonds of the benzene molecules being replaced by carbon- carbon bonds between the layers. Such an arrangement not only accounts for the sym- metry of the substance and for the observed spectra, but also for its known chemical and physical properties. There are quite a number of aromatic com- pounds, ineluding benzene itself, in erystals of which, according to the author’s conjugation theory, we might expect the molecules to be in layers of much the same type as the layers in graphite. Assuming this to be the case, if the densities, axial ratios and axial angles are known, the dimensions of the hexagon in these erystals can be caleulated. This has been done for a considerable number of substances, and in every case in which large distortions would not be expected, due to substituted groups, the dimensions of the hexagon are very close to the corresponding dimensions in graphite. If this result were obtained for one or two erystals, it might be considered merely a coincidence, but it is found to be general; the dimensions are found to correspond best where least distortion would be expected; and the axial ratios and angles, and the erystal form, symmetry and cleavage, as well as the actual distances, are found to conform to the structures assumed. Hence this structure for the benzene nucleus must be considered proved. This method of proof was reported on by the author in a paper presented at the twenty- fourth special meeting of the California Sec- tion of the American Chemical Society, held in conjunction with the annual meeting of the Pacific Division of the American Association for the Advancement of Science, at Berkeley, California, on August 5, 1921, at which time the structures of quinol, pyroeatechin and 8 Debye and Scherrer, Phys. Zeit., 17: 277 (1916); 18: 291 (1917); Hull, Phys. Rev., 10: 661 (1917). The author’s interpretation of the experimental results is a compromise between that of Hull and that of Debye and Scherrer. SCIENCE [Vou. LV, No. 1434 triphenyl carbinol were used as examples. The density of solid benzene was not then to be found in the literature. This is now obtainable, and from it and the axial ratios, by assuming close packing of the molecules in each layer, the hexagon dimensions can be computed. They again check with those in graphite. A paper is now being prepared in which the method of proof and its application to a large number of aromatic compounds will be given in detail. Mavrics L. Hvecisrs UNIVERSITY OF CALIFORNIA, BERKELEY, CALIF., THE AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE MEETING OF THE EXECUTIVE COMMITTEE OF THE COUNCIL THE spring meeting of the executive com- mittee was held in the board room of the Cosmos Club, Washington, D. C., on April 23. It was ealled to order at 4:10, with Dr. Simon Flexner in the chair and with all members present, and it adjourned at 11:30, a recess of an hour and a half having been taken for dinner. The main items considered are shown below. (1) Minutes of the last meeting (December 31, 1922), and of two actions taken by mail ballot in the interim were approved. These interim actions were (1) the formal vote to authorize the summer meeting with the Pacific Division, which is to occur on June 22-24, at Salt Lake City, and (2) the election of Dr. J. Mek. Cattell to sueceed himself as a member of the Board of Science Service. (2) The permanent secretary presented a report on the affairs of the association for the half-year ending March 31. A summary of that report is appended to the report of this meeting. (3) It was voted that all members of the American Medical Association who are not already members of the American Association for the Advancement of Science may become members of this association without the pay- ment of the usual entrance fee ($5). The A. A. A. §. is unable each year to invite all June 23, 1922 new members of the A. M. A. to join the more general association, as they have the privilege of doing according to the rules for affiliated societies of the A. A. A. §., and the special privilege is now made general to all members of the A. M. A., without reference to when they joined. (4) It was voted that the permanent secre- tary should prepare an invitation letter to be sent (about October 1) to each member of the American Medical Association resident in New England, Iowa and Oregon, asking him to be- come a member of the American Association for the Advancement of Science if he is not already a member; these special invitations are to be signed by the president of the American Asso- ciation for the Advancement of Science (Dr. J. Playfair MeMurrich), the chairman of the Bxecutive Committee of the Council (Dr. Simon Flexner), the permanent secretary and several others. It is planned that a special invitation of this kind shall be sent to other American Medical Association members resi- dent in other regions next year, ete., the entire list of the Medical Association being cared for in perhaps four or five years. (5) The budget for the current year was increased by the following items: Salaries, $180; printing, $520; summer meeting, $500. (6) The permanent secretary was asked to secure good, readable reports of the meetings of all sections and of their related societies at the fourth Boston meeting, to have these published in Science about the last week of January, 1923, and to have this special issue of the jour- nal sent to all members who do not receive Science regularly. The retiring president’s address is to be published in the first issue of Science after the meeting, and reprints of this are to be made available, on request, to mem- bers who do not regularly receive the journal. It is planned that members in good standing who do not attend the annual meeting may recelve copies of the general program, if they request them from the permanent secretary’s office before the meeting. (7) The making of arrangements for a speak- er for one of the evening sessions of the sum- mer meeting at Salt Lake City was referred to the general secretary with power. (8) Dr. D. T. MacDougal reported that the SCIENCE 681 committee on Cooperation with Mexican Men of Science recommends that Dr. E. L. Hewett, of the School of American Research, Santa Fé, N. M., be appointed special commissioner to consult with officials of the Mexican govern- ment regarding the organization of Mexican men of science. Dr. Hewett was appointed and was requested to serve the association in this capacity on his forthcoming trip to the City of Mexico. A committee consisting of Drs. Howard and MacDougal was instructed to pre- pare a suitable letter of credentials for the use of Dr. Hewett, this to be addressed to the Secretario de Agricultura y Fomento, to be engrossed, and to bear the seal of the associa- tion. (9) It was voted that the expenses of the Committee on Grants be paid from the funds in charge of the permanent secretary. (10) Dr. T. Wingate Todd, Western Reserve University, Cleveland, Ohio, was elected vice- president for Section H (Anthropology). (11) Dr. Bird T. Baldwin, Iowa Child Wel- fare Research Station, State University of Iowa, Iowa City, was elected vice-president for Section Q (Edueation). (12) The election of Dr. S. C. Prescott as chairman of the local committee for the fourth Boston meeting was ratified. (13) Thirty-three members were elected to fellowship, on proper nominations. (14) The resignation of Mr. Herbert A. Gill, auditor of the association, was accepted with regret, and with great appreciation of the very valuable services he has given the association in past years, and the permanent secretary was instructed to secure an auditor, preferably a well-known scientist, the clerical expense to be met by the permanent secretary’s office. (15) The Committee on Convocation Week was completed so that it is constituted as fol- lows: Dr. J. McK. Cattell, Garrison-on-Hudson, N. Y., chairman; Dr. E. H. Moore, University of Chieago, Ill.; Dr. J. P. MeMurrich, Univer- sity of Toronto, Toronto, Canada; Dr. H. S. Jennings, Johns Hopkins University, Balti- more, Md.; and Dr. Edwin B. Wilson, Massa- chusetts Institute of Technology, Cambridge, Mass. (16) The Canadian Society of Technical Agriculturists was constituted an affiliated soci- 682 ety of the association. Its officers are: Pres?- dent, Mr. L. S. Klinck, University of British Columbia, Vancouver, Canada; secretary, Mr. Fred H. Grindley, Gardenvale, P. Q., Canada. (17) The Executive Committee reaffirmed the desirability of holding the 1925 meeting in Kansas City, and expressed its appreciative thanks to the persons and organizations from whom invitations to meet in that city have been received. (18) The policy of Section N (Medical Sci- ences) was approved, by which it is planned that the program of this section, at the annual meeting, shall deal with such fields of work as parasitology, medical entomology, public health service, and others, where many medical scien- tists have common interests with those working in other fields of biology. (19) A committee was appointed, consisting of the president, the general secretary and the permanent secretary, to arrange for the send- ing of delegates to the Hull meeting of the British Association for the Advancement of Science. (20) The proposed federation of biological societies was considered at length, and the com- mittee expressed itself as in sympathy with the general aims of the societies involved. The hope was expressed that the organization of the association may be of service to the new federation. (21) The controversy aroused by recent pop- ular publications regarding the theory of evolu- tion was considered, and a committee of three was appointed to deal with this matter and make recommendations at the meeting of the executive committee. The committee on the evolution controversy consists of Dr. Edwin G. Conklin, Princeton University; Dr. C. B. Davenport, Station for Experimental Evolu- tion; and Dr. Henry Fairfield Osborn, Amer- ican Museum of Natural History, New York City. (22) The permanent secretary was asked to secure manuscripts for the general program for the fourth Boston meeting as early as may be, to the end that the difficulties of publica- tion may be obviated as far as possible. (23) The section committee of Section Q (Education) was authorized to publish a sep- SCIENCE [Vou. LV, No. 1434 arate section program for the fourth Boston ‘meeting—the expense, not to exceed $25, to be met by the permanent secretary from current funds. (24) The permanent secretary was authorized to provide suitable messenger service for the sessions of the biological societies meeting at Boston. (25) It was voted that it is desirable for the association to secure a distinguished European scientist for an evening lecture at the fourth Boston meeting. (26) The committee adjourned to meet in New York City (in the offices of the Science Press, by invitation of Dr. Cattell) on Satur- day, October 21, 1922. Burton E. Livineston, Permanent Secretary PERMANENT SECRETARY’S REPORT FOR THE HALF-YEAR ENDING MARCH 31, 19221 Tue last volume of the Summarized Pro- ceedings, published in October, 1921, is now nearly out of print. The total cost of publica- tion was $6,744.16 and sales have amounted to $2,587.00, making the net cost, at the present accounting, $4,157.16. The volume is being sold to members for $2.00 and to others for $2.50. Fifty copies remain to be sold, besides twenty copies reserved for complete sets.— A booklet of information for prospective new members, which contains a statement of the organization and work of the association, was published in January. Copies may be secured from the permanent secretary’s office—The resolution regarding the United States Forest Service, adopted at the recent Toronto meeting, was printed as a leaflet and sent to all members of Congress and to other officials. Invitations to join the association have been sent to 28,303 persons, of whom 830, or 3.4 per cent., have already joined. From Septem- ber 30, 1921, to March 31, 1922, 1,111 new annual members and 9 new life members have been enrolled, and 22 members have been rein- stated; the total gain was 1,142. During the same period 67 deaths were recorded, and 265 1 Presented to the Executive Committee of the Council on April 23, 1922. JUNE 23, 1922] resignations, and 705 names were dropped (October 1) because of over two years of ar- rearage); the total loss was 1,037. Four mem- bers were transferred from annual to life mem- bership. The net gain in total membership, for the half-year, is 105. The membership data for the last year and a half are tabulated below: Sept. March Sept. March 30, 31, 80, 31, 1920 8 1921 1921 1922 No. of members in good standing. 10,002 9,637 10,160 9,911 Total enrollment.. 11,442 11,524 11,547 11,652 t is elear that the membership is gradually increasing, but there still remajn many persons in the United States and Canada who are vitally interested in scientific and educational progress but who are not yet enrolled in the association. Members of the association should do all in their power to increase the membership and thus strengthen the organization. A local branch of the association was organ- ized in the fall of 1921 and is in successful operation. This is the State College (Pennsyl- vania) Local Branch. Its officers are: chair- man, A. J. Wood; secretary, J. Ben Hill. It has an enrollment of 53 members of the asso- ciation. Fifteen new members have been secured through its activities. The State College Branch holds occasional meetings throughout the year. Plans for the summer meeting of the asso- elation, jointly with the Pacific Division, which is to oceur at Salt Lake City, June 22-24, 1922, are progressing satisfactorily. Details of these plans are in charge of Mr. W. W. Sargeant, Golden Gate Park, San Francisco, secretary of the Pacific Division, and the gen- eral secretary of the association, Dr. D. T. MaeDougal, Carmel, California. The chairman of the local committee for the Salt Lake City meeting is Professor H. G. Titus, 215 S. Third Kast, Salt Lake City, Utah. Card lists of all the members enrolled in each section of the association have been prepared and will soon be in the hands of the secretaries of the respective sections, together with a steel cabinet for each set of cards. These section lists will be Eept continually corrected, by SCIENCE 683 means of cards sent out from the permanent secretary’s office. Hach member’s addressograph plate now shows, besides his name and address and the formula of his membership status, one, two, or three letters denoting the section or sec- tions in which he is enrolléd. Thus, ABD indi- cates that the member on whose plate this letter combination appears is enrolled in Sections A, B and D, and a corresponding card is found in each of the three section lists. When a member has indicated more than three sections as his preferences, the first three on his list have been indicated on the plate. In cases where no sec- tion has been named by a member, it has been impossible to enroll him in any particular sec- tion, and he is regarded as a member of the association in general. When members receive cards, ete. from the permanent secretary’s office, they are requested to serutinize the ad- dressograph impression and inform the office if any corrections are needed with respect to their section enrollment. Financially, the association is more than holding its own. The permanent secretary’s reserve or emergency fund amounted (on March 31) to $5,855.09, $1,500 having been transferred to this fund on March 25. Of this, $1,000 is specially reserved from the eurrent funds of 1922 for meeting the extra expense of publishing the next volume of Summarized Proceedings, which is to appear in the spring of 1925, following the next four-yearly (Wash- ington) meeting. After all liabilities are cared for, over $2,000 is available (March 31, 1922) for appropriation from the current funds of the present fiscal year, which ends October 1 1922. i) SECTION M—ENGINEERING AND ASSO- CIATED SOCIETIES THE resuscitation of Section M at the recent Toronto meeting of the American Association for the Advancement of Science resulted in a program of considerable length and much diversity. The attendance was good, and the interest was sustained to the end. Sir Clifford Sifton, formerly chairman of the Commission of Conservation, Canada, gave the opening ad- dress on Tuesday afternoon, his subject being “Some Views on the Development of the Nat- 684 ural Resources of Canada.” He dealt, among other things, with the fuel problems of Canada in their relation to the development of hydro- electric power, and with the general conditions obtaining at the present time in the rural dis- tricts. Papers by Paul Heymans, now of the Mas- sachusetts Institute of Technology, and Profes- sor Charles Mannebeck, of the University of Louvain, Belgium, on “Optical Determination of Stress in Engineering Structures” and “Re- turn Current along Submarine Cables,” re- spectively, were read by the authors. At the morning session on December 28, Mr. John Murphy, electrical engineer for the De- partment of Railways and Canals, Ottawa, gave an address on “Ice Formation and Prevention with Special Reference to Frazil and Anchor Ice.” Mr. Murphy advocated keeping certain metal parts of hydro-electric installations a small fraction of a degree above 32°F. with the aid of artificial heat. This can be and is being done at certain plants on the Ottawa River to which Mr. Murphy made reference. “Wneineering Standardization” was discussed by Ma. R. J. Durley, secretary of the Canadian Engineering Standards Association. Other papers were “Fifty Years of Progress in Min- ing in Canada” by Mr. John HE. Hardman, “Metal Mining in Canada,’ by Thomas W. Gibson, deputy minister of mines, Ontario; “Gold Mining in Canada” by Mr. A. F. Brig- ham and “Nickel Mining and Smelting” by W. L. Dethloff, chief engineer of the Mond Nickel Company. The morning session on Thursday, December 29, was given over to an illustrated address on “Toronto Harbor Development” by Mr. George Clark, chief designing engineer of the Toronto Harbor Commission, and to a discussion on Scientifie and Industrial Research by Dr. R. A. Ross, chairman of the Honorary Advisory Council for Scientific and Industrial Research, Canada, who emphasized the economic import- ance of obtaining a satisfactory method of car- bonizing the lignites of Western Canada. Mr. H. K. Wicksteed read a paper on “Railway Development in Canada” treating his subject chiefly from an economic standpoint. In the afternoon Messrs. A. M. McQueen and James SCIENCE [Vou. LV, No. 1434 McEvoy read papers on “Exploration for Oil in Western Canada” and “Coal Mining in Al- berta” respectively. Sir Adam Beck, chairman of the Hydro-Electrie Power Commission of Ontario, gave in Convocation Hall an address to all sections of the American Association for the Advancement of Science in the afternoon at 4 o’clock. This address was well attended and was illustrated by motion pictures. Sir Adam drew a comparison between the cost of Niagara generated hydro-electric energy in Windsor, Ont., and steam generated electric energy in Detroit, Mich., the prices being 314 and 8 cents per kilowatt hour, respectively. The Friday sessions, with the exception of Mr. D. B. Dowling’s address on the Mackenzie oil fields, were given over to the discussion of problems pertaining to Engineering Education. Works Commissioner Harris, City of Toronto, - gave the employer’s viewpoint with respect to the qualifications of the young engineer. Professor Charles F. Scott, president of the Sogiety for the Promotion of Engineering Education, contributed a paper on “Pro- fessional Engineering Education for the Industries.” Dr. F. W. Merchant, director of industrial and technical education, Ontario, ad- dressed the section on the, function of the sec- ondary technical school. Professor Dugald C. Jackson’s paper on the same subject was read by Professor C. R. Young in the absence of the author. Discussion following all of these papers was very general. Regarding the sessions of the Society for the Promotion of Engineering Education, held at Toronto on December 30, 1921, the reader is referred to the Canadian Engineer, Vol. 42, No. 1, p. 109, Jan. 3, 1922, and Vol. 12, No. 2, p. 133, Jan. 10, 1922. The closing function was a dinner in Hart House on Friday evening at which one hundred were present. Mr. J. B. Tyrrell, chairman of the section, presided at all sessions. The com- mittee in charge of arrangements consisted of the chairman, Mr. Tyrrell, and Professors R. “ W. Angus, Peter Gillespie and C. R. Young, all three of the University of Toronto. Prtrer GILLESPIE, Acting Secretary, Seciion M TORONTO, CANADA New SERIES : Sy; SINGLE Copigs, 15 Crs. » Vou. LV, No. 1435 Fray, June 30, 1922 ANNUAL SUBSCRIPTION, $6.00 Saunders’ Books ° FOURTH Wells’ Chemical Pathology EDITION This work considers pathology from the standpoint of the chemical processes involved. It deals with the chemical changes that take place in pathologic conditions. It treats of the causes. of disease and so provides the first step in their treatment. Octavo of 695 pages. By H. GIDEON WELLS, M.D., Ph.D., Professor of Pathology, Unie reey Gry aoe oth, .00 net. 9 ° SEVENTH Jordan’s General Bacteriology EDITION In this work there are extensive chapters on methods of studying bacteria, including stain- ing, biochemical tests, cultures, etc; on development and composition of bacteria; on enzymes and fermentation products; on the bacterial production of pigment, acid, and alkali; and on ptomains and toxins. Octavo of 744 pages, illustrated. By EDWIN O. JORDAN, Ph.D., Professor of Bacteriology in the Uni- versity of Chicago. Cloth, $5.00 net. Smith’s Bacterial Diseases of Plants This book is the result of thirty-five years of reading and diligent laboratory and field in- vestigation. It is largely the product of a single laboratory, eight of the organisms here selected for special study having been named by the author. By ERWIN F. SMITH, in charge of Laboratory of Plant Pathology, Bureau of Plant Industry, Washing- ton, D. C. Octavo of 688 pages, illustrated. Cloth, $10.00 net. Whetzel’s History of Phytopathology Professor Whetzel divides his subject into Five Eras, and these in turn into Periods. He gives a general survey of each Era and each Period, crystallizes the evolutionary movement of each, gives interesting biographic sketches of the predominant figures, frequently includ- ing portraits. 12mo of 130 pages. By HERBERT RICE WHETZEL, Professor of Plant Pathology at Cornell University, Ithaca, New York. Cloth, $2.00 net. O a Heineman on Milk This work discusses milk from the viewpoint of the sanitarian, producer, and physician. There are chapters on the physiology of lactation, chemical, physical, and bacteriologic ex- aminations, contamination, fermented milks, pasteurization, certified milk, economic aspect of production and distribution, etc. By PAUL G. HEINEMAN, M. D., Wisconsin. Octavo of 684 pages, illustrated. Cloth, $7.00 net. W. B. SAUNDERS COMPANY, West Washington Sq., Phila. Please send me the books checked (V) and charge to my account :— Wells’ Chemical Pathology=-2-_-___-2=--__ $7.00 net. Smith’s Bacterial Diseases of Plants_.__-$10.00 net. per i . Whetzel’s History of Phytopathology____$2.00 net. Jordan’s General Bacteriology_---------___ $5.00 net. isitiomente WEE ee eee $7.00 net. INCAS SS a ee Se ae, AD DRIES Soe eee a ee eh Ree as as il SCIENCE—ADVERTISEMENTS The Trend of the Race By Samuel J. Holmes A study of the present tendencies in the biological development of civilized mankind, which makes available the latest results of scientific investigation. 396 pages, $4.00. Questions and Prob- lems in Chemistry By Floyd L. Darrow A systematic development of elementary chemistry to be used with any text book. 80 Cents Standard Works of G. Bell and Sons, London, Harcourt, Brace and Co. X Rays and Crystal 2 by Freud’s Rest and Pain disciple. John Hilton, F.R.S. 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Infcrmal but authorita- tive. $1.50 C A Weekly Journal devoted to the Advancement af Science, publishing the official notices and proceedings of the American Association for the Advancement of Science, edited by J. McKeen Cattell and published every Friday by THE SCIENCE PRESS 11 Liberty St., Utica, N. Y. Garrison, N. Y. New York City: Grand Central Terminal Annual Subscription, $6.00. Single Copies, 15 Cts. Entered as second-class matter January 21, 1922, at the Post Office at Utica, N. Y., under the Act of March 3, 1879. JUNE 30, 1922 Vou. LV No. 1485 CONTENTS The Relation of the Endocrine Glands to Heredity and Development: Dr. LEWELLYS TN) LBVAIIND oe acerca ee eS ea er 685 An Analysis of Student Grades at Washing- ton University School of Medicine: Dr. TTA AY rp eat NGS inn fa bart ee ee eee 690 CHARLES BASKERVILLE: W. A. HAmon,............ 693 Scientific Events: The Pension and Insurance Plan of Prince- ton University; Gifts to the American Mu- seum of Natural History; The International Astronomical Union at Rome; Honorary Degrees conferred by Yale University on Scientific Men Scientific Notes and News.............. 694 EOI sO University and Educational Notes Discussion and Correspondence : The New Catastrophism and its Defender: Dr. ARTHUR M. Miturr. Keys in Sys- tematic Work: KE. B. Wiuu1amMson. The Y-centrosome Type of Seax-linked Inheri- tance in Man: PrRoressor W. BH. Caste. Tre Vocabulary of Metabolism: Dr. Max Kaun. Salaries of Professors in Poland: PROFESSOR VERNON KELLOGG....0.2222.020022-.-0. 701 Special Articles: The Spiral Trend of Intestinal Muscle Fibers: Dz. Freperic T. Lewis. WNeartic Proturans: H. HE. Ewine. Stem End Rot of Apples: Dr. Cuypr C. BaRNUM............... 704 The American Physiological Society: Pnro- FESSOR CHAS. W. GREENE... 708 THE RELATION OF THE ENDOCRINE GLANDS TO HEREDITY AND DEVELOPMENT! Since the object of the Eugenics Research Association is the advancement of knowledge that will contribute to the improvement of the human race by inheritance, its members can searcely fail to be interested in the discussions that are now going on regarding the glands of internal secretion and their relations to hered- ity. As a medical man, deeply interested in the problems of constitution and of condition and profoundly impressed with the recognizable influences of internal secretions upon form and function in both normal and pathological states, I welcomed the suggestion of Dr. Davenport that I deal in my presidential address with the topie announced. The progress of research in endocrine domains and in heredity has of late been so rapid that no single person can keep pace with its strides. My remarks, therefore, will make no pretence to completeness of dis- cussion of the reciprocal relations of heredity and endocrinology. They are intended rather to direct the attention of the members of the association to some of the more important facts that have been established and to stimulate interest in some of the newer problems that are emerging and clamoring for solution. THE ENDOCRINE ORGANS AND THEIR PRODUCTS It is only comparatively recently that the significance of the so-called ductless glands and of the substances they manufacture has become recognized, but, in a very short time, a consid- erable body of knowledge concerning their structure, their functions and their inter-rela- tions has been accumulated. At the moment, studies of the internal secretions, or, as many now call them, the “inecretions,” are, on ac- 1 Presidential address at the tenth annual meet- ing of the Eugenies Research Association, held at Cold Spring Harbor, Long Island, June 10, 1929. 686 count of their astonishing and novel revela- tions, attracting the attention not only of scientifie workers in biology and medicine but, and perhaps to too great an extent, also of the laity. Important as a knowledge of these incretions is for an understanding of bodily and mental states, there is some danger, I think, of over-emphasis and of disproportionate prominence. Popular articles and treatises on endocrine subjects too often assume what is mere conjecture, or wild speculation, to be established as fact and reveal a tendency to exploitation that must sooner or later be fol- lowed by disappointment and disillusionment. There is, I fear, some danger that even seien- tifie endocrinology may, temporarily at least, be brought into undeserved discredit. It would seem especially desirable, therefore, that those who write or speak upon the subject should discriminate carefully between fact and fancy. Hyery effort should be made rigidly to control hypotheses by accurate observation and careful experiment, for only thus can an orderly ad- vance in knowledge be assured. Though an ineretory function has been ascribed to many organs of the body, the prin- cipal ineretory organs, those whose function is best understood, are seven in number: (1) the thyroid gland, (2) the parathyroid glands, (3) the hypophysis cerebri, or pituitary gland, (4) the epiphysis cerebri, or pineal gland, (5) the suprarenals (consisting of two parts of entirely different functions, (a) the medulla or chromaffine portion and (b) the cortex or inter- renal portion), (6) the islands of Langerhans of the pancreas, and (7) the interstitial tissue of the gonads (ovaries and testicles) or so- called “puberty gland.” There is evidence that each of these organs yields an internal secretion that, distributed through the blood, exerts important chemical influences upon other, more or less distant, organs and tissues. Some of these influences have been definitely determined, but it will doubtless be a long time before all of them will be well understood. The knowledge that has been gained concerning the thyroid, the pitu- itary, and the suprarenals gives promise, how- ever, that steady research will gradually en- large our information regarding the influences exerted by each of the incretory glands. SCIENCE [Vou. LV, No. 1435 The chemical substances contained in the incretions have been ealled “hormones” and the determination of the precise chemical constitu- tion of these hormones sets fascinating tasks for the biochemist. That the chemical consti- tution of some endocrine products may be closely approached, if not definitely estab- lished, has been shown by researches upon epinephrin (from the medulla of the supra- renal gland) and upon iodothyrin and thyroxin (from the thyroid gland). Studies of concen- trated functionally potent extracts from other glands may before long reveal the chemical nature of other hormones; I have in mind, especially, studies of so-called “pituitrin” (hypophyseal extract) and of so-called insulin (extract of the islands of Langerhans of the pancreas). Clues as to the chemical nature of the hormones of the parathyroids, the pineal body, the interrenals and the gonads will prob- ably be more difficult to obtain. Biochemical researches to establish the precise nature of the single hormones are extraordinarily important and should be vigorously prosecuted in order that experimental studies of hormone influ- ences may be more systematically, exactly and intelligently pursued. THE BETTER-KNOWN ENDOCRINOPATHIES Our knowledge of endocrine functions has been variously derived, partly through keen clinical-pathological observations, partly through experimental work upon animals (sur- gical removal of single organs; organ trans- plantations; injections of organ extracts or of isolated hormones). Before discussing the relations of the endocrine organs to heredity and development, it may be helpful briefly to refer to a few of the classical clinical syn- dromes that are now justifiably believed to be endocrinopathic in origin. Time will not per- mit me to refer to more than a few of these, but those chosen will serve as illustrative paradigyas. I may cite first two characteristic clinical syndromes met with in association with disease of the thyroid gland, namely, exophthalmic goitre and myxedema. In the former, known also as Graves’ disease or Basedow’s disease, we observe, in typical instances, a markedly enlarged pulsating thy- JUNE 30, 1922] roid gland (goitre) in the neck, a persistently accelerated pulse rate (say 150 or more to the minute instead of the normal rate of 72), marked nervous symptoms including fine tremor of the fingers, outspoken protrusion of the eye- balls (exophthalmos), a tendency to profuse sweats and to watery diarrhcea, sensitiveness to heat, a peculiar psychic over-alertness and apprehensiveness, and a tendency to rapid ema- ciation (despite an abundant food intake) associated with demonstrable acceleration of the rate of the basal metabolism. Since simi- lar symptoms can be produced by feeding thyroid gland extract, it is believed that there is a hyperfunction of the thyroid gland (hyper- thyroidism) in exophthalmie goitre. In the idiopathic form of myxedema (or Gull’s disease) the clinical conditions are dia- . metrically opposite to those in exophthalmic goitre. The thyroid gland is small, the puise- rate is usually slow, the eyes look sunken (enophthalmos), the lid-slits are narrow, the bodily movements are slow and clumsy, the patient is mentally dull, forgetful and apa- thetic, there is sensitiveness to cold and a ten- deney to constipation, the hairs fall out, the skin is dry, thick and wrinkled and there is a tendency to obesity (despite a restricted food intake) associated with demonstrable retarda- tion of the rate of the basal metabolism. Since patients with idiopathic myxedema rapidly improve if they are fed the thyroid giand of the sheep, and since a condition precisely sim- ilar to it oceurs if the thyroid gland be sur- gically removed (cachexia thyreopriva), it is believed that myxedema is due to a hypofune- tion of the thyroid gland (hypothyroidism). Two sumilarly contrasting clinical syndromes due to disorders of the hypophysis cerebri or pituitary gland may next be mentioned, namely, (1) gigantism and acromegaly, due to over- function, and (2) Froehlich’s syndrome of obesity with genital dystrophy, due to under- function. When there is overfunction of. the pituitary gland in early life before the epiphyses of the long bones have united with the shafts of those bones there is over-stimulation of bony growth and the patient becomes excessively tail (gigan- tism). When the overfunction of the pituitary SCIENCE 687 gland occurs in later life (after epiphyseal union), bony overgrowth is still stimulated but manifests itself in enlargement of certain parts of the skull and of the hands and feet (acromegaly). There is also enlargement of the tongue and of the internal organs (splanch- nomegaly). The vietim presents a very char- acteristic appearance. The face is hexagonal, the nose is broad, the chin is prominent and curved so as to bend sharply upward, the cheek bones are outstanding and the arches above the eyes are prominent. Looked at from the side, the face resembles that of Punch (nut-cracker profile). The hands are spade-like, the fingers are sausage-shaped, and the feet are huge. On the other hand, when there is under- function of the pituitary gland during develop- ment a condition (Froehlich’s syndrome) in marked contrast to gigantism and acromegaly results. The skeletal development is defective, the growth of bone being less than normal. The patient is short in stature, the face re- mains child-like and the hands and feet are small (acromikria). The subcutaneous fat is markedly increased (obesity), and is distributed in an uneven way over the body, being most abundant on the abdomen, over the buttocks, and in the proximal portions of the extremi- ties. The secondary sex characters either fail to develop or develop in a faulty way. The pubic and axillary hairs do not appear or are seanty. The external genitals remain in an infantile state. In young men the voice is high pitched and there is a lack of normal virility. In young women, the menstrual flow is scanty or absent. Next, let us contrast two clinical pictures believed to depend upon disorders of the supra- renal capsules, (1) Addison’s disease, met with in destruetion of the suprarenals (hyposupra- renalism), and (2) pseudo-hermaphrodism, premature puberty, and hirsutism, met with in association with hyperplasias of the supra- renals (hypersuprarenalism). In Addison’s disease there is great weakness and prostration, associated with low blood pressure, diarrhea and other digestive dis- turbances, chronic anemia and often a peculiar bronzing of the skin (melanoderma). On the other hand, in cases in which there is 688 believed to be overfunction of the suprarenals, the clinical picture is markedly different though it varies somewhat with the time of onset of the assumed hyperfunction. Should this occur during fetal life, a pseudo-hermaphrodite ap- pears, the person presenting the external gen- ital appearances of one sex while possessing the internal sex organs of the other sex. When the overactivity exists soon after birth rather than before birth, puberty appears premature- ly, a little girl of three or four menstruating regularly and exhibiting the bodily and mental attributes (sexually) of an adolescent, or a boy of seven presenting the external genitals and the secondary sex characters of an adult. Should the overactivity of the suprarenals not occur until adult life, it may reveal itself in a woman of middle age by the rapid develop- ment of hairiness over the body (hirsutism) and by the exhibition of masculine character- istics (virilism). Other examples of clinical pictures might be mentioned but these few will suffice to illus- trate the extraordinary mental and physical changes that may become manifest when there are disturbances of function of the endocrine organs. CONSTITUTION AND THE ENDOCRINE ORGANS Biologically considered, a developed human being, like all developed higher organisms, must be looked upon as the resultant of a long series of reactions between the zygote (fer- tized ovum) and its environment. The ger- minal type or genotype, reacting with the sur- roundings, becomes the developed type or phenotype, in the case of human beings, the “realized person.” The germ plasm provides the determining factors, the environment the realizing factors. Everything in the phenotype attributable to inheritance may be spoken of as “constitution,” everything attributable to environment as “condition.” Medical men as well as biologists must, then, when studying a person or a single organism, be interested in differentiating, when they can, what is “consti- tutional” from what is “conditional” in origin. In experiments upon animals and plants such a differentiation may be relatively easy; in studies of human beings it is always extremely SCIENCE [Vou. LV, No, 1435 difficult and, as regards many features, as yet wholly impossible. The importance of constitution will need no emphasis among biologists who are predom- inantly students of heredity. Among medical men, too, throughout the centuries, especially among practitioners, there have always been those who have been fully aware of the sig-~ nificance of constitution and of its relation to disease-disposition. During the past fifty years, however, under the spell of bacterial and protozoan etiology, medical men have been so absorbed by studies of influences arising in the environment that they have, too often, for- gotten to continue their investigation of influ- ences of endogenous origin. For a time, it was almost taboo to speak of “constitution,” or of “disposition,” owing to a justifiable reaction, perhaps, against the earlier prevalent tendency to use these words as a mask for ignorance. Recently, however, there has been a welcome revival of studies of constitution. Now that facts that supply a scientific basis for a general pathology of constitution have been aceumu- lated, we may look forward to a greatly increased interest among physicians in the part played by inheritance in disease.. Indeed, during the past five years, several treatises upon this and allied subjects have been pub- lished; and we may expect, I think, during the period just ahead of us, many attempts to present, more systematically than hitherto, the role played by constitutional disposition in the pathogenesis of a whole series of diseases. The chemical consideration of endocrine dis- orders, has in my opinion, given a strong im- petus to this movement toward a revival of studies of the physiology and the pathology of constitution. For though the endocrine organs are, in some instances, accessible to trauma and to poisons and parasites that reach them through the blood-stream, diseases of these organs, especially those “idiopathic” chronic diseases that develop insidiously and give rise to the classical endocrine syndromes, appear to be, usually, of endogenous rather than of exogenous origin, that is to say, they develop as the results of special anomalies of constitu- tion. This accounts for the fact that endo- crinopathies tend to run in families, and the JUNE 30, 1922] interrelationships that exist among the different endocrine organs may explain why a disease of the thyroid (exophthalmie goitre) may ap- pear in one member of a family, a disease of the pancreas (diabetes mellitus) in another, a disease of the hypophysis (dystrophia adi- posogenitalis) in a third, or a pluriglandular disorder in a fourth member of the same fam- ily. The experienced clinician can now often recognize phenotypes in which there are anomalies of constitution that predispose to - endocrine disorders; and as a result of this recognition he may, sometimes, be able to insti- tute a rational prophylaxis. The thyreotoxie constitution, the hypothyreotice constitution, the hypoparathyreotic constitution, the hyper- pituitary constitution, the hypopituitary con- stitution, the hypergenital constitution and the hypogenital constitution are instances in point. Unfortunately we have not learned as yet how effectually to intervene in a prophylactic way in all of these anomalies of constitution, but rewarding experiences with the hypothyreotie and with the hypoparathyreotie constitution give us hope that, with widening knowledge, suitable preventive measures will be discovered. Studies of the symptoms of endocrine dis- orders and studies of partial anomalies of con- stitution affecting the endocrine organs are thus throwing much light not only upon (1) the mode of action of the ineretions, but also wpon (2) inheritance as a determining cause of endo- erinopathic phenotypes. The incretions may affect distant parts directly, being carried to them by the blood; or they may affect those parts indirectly through the intermediation of the autonomic nervous system, which they sen- sitize. When they act directly, they may influ- ence the substances and processes in the locali- ties that they reach (chemical correlation; reg- ulation of metabolism) or they may supply materials for incorporation by the cells (nutri- tive and formative influences). When they act indirectly through the vegetative nervous system they may exert profound effects through the secretory activity of glands, through the contraction of smooth muscle, or through modifications of those neural mechan- isms that have to do with the emotions and the will. During the developmental period, it is clear that the incretions are in part responsi- SCIENCE 689 ble for the dimensions and proportions of the skeletal apparatus and the soft parts. A normal functioning of the ineretory organs is essential for the shaping of parts and for the maturing of functions in the right place and at the right time. Through correlative differ- entiation (due in part at least to the action of the ineretions), the developing organism gradu- ally comes to exhibit the characteristics of its species, its age and its sex. Even the anthro- pologists now maintain that the solution of the problem of how mankind has been demar- cated into types so diverse as the Negro, the Mongol and the Caucasian will involve the study of hormonie mechanisms! CAN HORMONES MODIFY UNFERTILIZED GERM- CELLS SO AS TO INFLUENCE INHERITANCE Thus far in our discussion of the relation of the endocrine glands to heredity and develop- ment we have confined our attention to (1) the genotypic determination of endocrine func- tions in developing organisms, (2) the réle played by the incretions in normal and patho- logical ontogeny, and (3) the fact that there exist heredo-familial anomalies of body make- up that predispose to endocrine disorders. But we must, for a few moments at least, consider the possibility that hormones, reaching unfer- tilized germ-ceils, may modify the germ plasm in such a way as to give rise to new inheritance factors that will be transmitted from genera- tion to generation. Experiments upon the influence of ineretory substances upon the development of cold-blood- ed animals have yielded such striking results upon cells of the soma that many have won- dered whether ineretions circulating in the blood might not also permanently alter the germ-cells so as to account in animals for the origin of mutations and new biotypes. You will recall the experiments to which I refer (1) the acceleration of tadpole metamorphosis by feeding thyroid substance and (2) the re- tardation of the same process by feeding thy- mus substance. In endocrine diseases of either endogenous or exogenous origin, the cells of the soma are also markedly altered; and the question has naturally been asked, May not the germ-cells be simultaneously profoundly changed? 690 Since 1895, a number of investigators have suggested that the influence of specific internal secretions might easily be used for the explana- tion of the inheritance of acquired characters. Last year, an English evolutionist published a volume on “Hormones and Heredity” and sug- gested that environmental influences infiuencing an organ, or part, of the mother may set free chemical substances (hormones) that, carried through the blood to the ovaries, may affect the ova in such a way as to lead to similar changes in the same organ, or part, of the off- spring. By such a mechanism he would attempt to account for a progressive evolution in the animal series. His theory would seem prac- tically to be a modfiication of the pangenesis theory of Darwin with the substitution of “hormones” for Darwin’s “gemmules.” Many physicians, too, have leaned toward Lamarckian or neo-Lamarckian theories that assume the inheritance of acquired characters and some of these have suggested that in such inheritance the ineretions must be concerned. Those who have been trained in the methods of modern biology, however, usually reject La- marckism, and attempt to explain the apparent inheritance of “acquired characters” for a gen- eration or two by assuming either a “germinal injury” (in the sense of Forel’s ‘“blastoph- thoria”) or a “parallel induction.” The consensus of biological opinion in this country is strongly opposed to the inheritance of acquired characters. Mendelian studies lend no support to the view that conditional influ- ences can affect inheritance factors. Mendelism is, however, difficult if not impossible to apply to man. As some one has put it, “the propa- gation of man consists of a continual crossing of polyhybrid heterozygote bastards,” not susceptible to analysis by Mendelian methods such as ean be applied to the study of the propagation of plants and experimental ani- mals. But if inheritance of acquired characters really occurred, why should there not be, as Conklin emphasizes, an abundance of positive evidence to prove it? When one plant or animal is grafted on another, there is no evi- dence that the influence of the stock changes the constitution of the graft. When an ovary is transplanted, the foster mother does not SCIENCE [Von. LV, No. 1435 affect the hereditary potencies of the ova. Until more proof has been brought than has hitherto been advanced, we shall not be justi- fied, so far as I can see, in accepting the theory that conditional influences change hereditary factors. There are, moreover, aside from the problem of the inheritance of acquired characters, enough relationships of the endo- crine organs to heredity and development to long keep us rewardingly occupied. CONCLUSION Let me summarize in a few words the situa- tion as I see it. The endocrine organs are of the greatest importance in normal development, their ineretions exerting profound formative and correlative influences. In pathological de- velopment, the abnormal plenotypes that ap- pear often point decisively to partial anomalies of constitution involving especially the duct- less glands and their functions. Whether or not under normal or pathological conditions, hormones arising in the soma can so change the germ plasm of ova or sperm-cells as to ac- count for certain mutations or for germ-cell injury is a question that deserves considera- tion and merits experimental test. Finally, the conjecture that conditional influences upon the soma can through hormonal production and transportation to parental gametes so modify the germ-plasm as to result in the inheritance of the conditioned modification seems, as yet, to have but little, if any, evidence to support it. Lewe.iys F. Barker Bautimore, Mp. AN ANALYSIS OF STUDENT GRADES AT WASHINGTON UNIVERSITY SCHOOL OF MEDICINE THis work was undertaken with the idea of obtaining some definite data upon which to base opinions of students’ grades during their medical course. As the data obtained were of great interest to the staff of this school it was thought advisable to publish them in order that they might be used for comparison with those of other schools. The records of those students in the classes of 1914, ’15, 717, 719, ’20 and ’21 who spent all June 30, 1922] four years of their course in Washington University Medical School were studied. The class records before 1914 were not complete enough to average with the later records. The class of 1916 had only two members who spent all four years in this school, these records not being complete, and the class of 1918 finished its course in France, so these two classes were not considered in the analysis. In the six classes studied there were available the records of 89 students. From these records were copied the average for each year, the graduation age, degree at matriculation, and the school in which premedical training was taken. In considering the graduation age of the students it was found that there was little variation from one year to another. average graduation ages for the classes studied beginning with that of 1914 were 25, 26, 2514, 26, 26, and 24 years, respectively. Thus the average graduation age of the 89 students was approximately 2514 years. The variation be- tween individuals was so slight that no rela- tion between age and grade was worked out. The number of students possessing bachelor’s degrees upon matriculation was 14, or 15.73 per cent. of those studied. Eleven were A.B. degrees and three B.S. degrees. One might have expected a larger percentage of bachelor of science degrees from students interested SCIENCE The- 691 primarily in the sciences. The average gradua- tion age of these students was 26.64 years, or 1.35 years older than that of those without de- grees. The average grade of the group with degrees was 82.21 per cent. as contrasted with 80.89 per cent. for that without degrees. Thus we see that the average man with a degree upon matriculation was 1.35 years older than the man without one, but that his grade was 1.52 per cent. higher than that of the under- graduate student. Is an increase of grade of 1.32 per cent. worth a time loss of 1.35 years in a medical student’s career? The grade averages by years for each class are given in Table I. Here we see that there is not much variation between the classes of the years studied. This fact would indicate that a uniform system of grading had been used for all classes, providing the class of stu- TABLE I j TX Av. Av. Av. Class Year I | Year IL| YearIII| YearIv 1914 | 77.87% | 80.31% | 79.95% | 82.11% 1915 79.21% | 79.76% | 84.51% 83.60% 1917 78.28% | 78.81% | 81.75% 84.02% 1919 76.67% | 79.84% | 81.45% 85.52% 1920 77.62% | 81.48% | 82.18% 83.68% 1921 79.80% | 81.33% | 81.96% 84.73% Total Av. | 78.24% | 80.26% | 81.97% 83.93% General average for all classes for four years = 81.10%. TABLE II Per Cent. of Students Amount of Year I-IT Year IT-IIT Year III-IV Year I-IV Variation ~ ~ 3 + = o = 0-1% 3.41 12.50 6.82 5.68 8.99 7.78 4.50 1-2% 10.02 6.82 10.02 6.82 16.85 3.37 2.25 2-3% 3.41 5.68 9.09 11.36 10.11 5.62 2.25 3-4% 5.68 11.36 9.09 6.82 8.99 5.62 1.12 4-5% GES 2 ruil ia yesen ee 7.95 2.27 8.99 7.78 4.50 5-6% 9.09 2.27 7.95 1.14 10.11 BPO Tali peeteda 6-7% 4.55 1.14 BSL ae 4.50 SHY Nh) tas 7-8% PAPAL alles ea 3.41 1.14 4.50 AEOO HMA Bp uae ten 8-9% stay aM A een, 2.27 1.14 1.12 10.11 112 9-10% AND Diy | einseseices B ba Ue A oe I AAO OM ali teecen 10-11% me Oi ie iba eeeeee PVA) 1.12 LIB O ru iie leans 11-12% eRe el GaN pe eens Ee aa so Re AD Nig eco 1G ae MTD bel ea iit wa 12-13% DSTA liye ty Home OOTP AN Wien ER TG CIEE AARC TN ones HEA SES Ute Baie pecan Nes N AL ers SRC AL SS Ui eS). a a Lae QS aac ees TN, MPR Tae] SR OE it HE poe aaa Ta PRPAS VD oda a RS OSG Zora ia era eeceeeatt longue eeeee ey TAN (Mt PL caaN Os mmc ek ies cy aT NOLIN cata Nee Le TUG AY ZN Sigh FH) Megara SY a7 ee A EB TD Ti eerie Teed 8 Oye iN | Wate estan a initecemeniee mT) UC URN a) MRE ROE ESL VLD Ret eke S199 alan ete SPH Ua RU SM Neen ONT Plies) None sy eee Manos eal ey ere 2:25 by ieee! DDO aie suite au een Ul peeeerteet IY Mis SREP Memes ate ce eNCrd tenetecetan we [LL ueeeine na Dn Na ee 692 dent remained the same for each year. There is a gradual increase in the general average from the first to the fourth year of 4.69 per cent. As the same students are present throughout all four years, this either shows an improvement in the student’s ability or, more likely, severe grading during the first years or lax grading during the last years of the course. The general average of the entire group for all four years is 81.10 per cent., which is a low B grade in our letter system. This gives us a numerical figure for our average students in the future. There was a great tendency toward variation in the grades of an individual from one year to the next. This is well shown in Table IT in which the per cent. of students varying a given percentage in grade, either up or down, between the different years of the course is shown. There is always a larger proportion of the class showing an increase in grade as would be expected from the increase in general aver- age. To show how inconstant the grades are from year to year we note that more than 36 per cent. of the students have a difference of over 8 per cent. between first and fourth year averages, and indeed, 3.62 per cent. show a difference of over 18 per cent. In Table III the rank of the student in his class is considered. The men of each class were arranged according to rank, based on their first year averages, and the class then split into thirds, an upper, middle, and lower third. Each third was now considered 100 per cent. and the upper represented by left diagonal lining, the middle by cross hatching, and the lower by right diagonal lining. The proportion of the men of the upper third during the first year who fell into the middle third the second year is represented by the area of left diagonal lining in the middle division under year II. Similar changes in other groups may be fol- lowed in the same manner. It is obvious that aman might go from group 1 to group 2, then back to group 1 the third year, so that the left diagonal lining in group 1 for the third and fourth years does not represent the percentage of men who remained there constantly for four years, but that portion of the men who started in group 1 the first year who are there in the SCIENCE [Vou. LV, No. 1435 year observed. Therefore the interrupted line was inserted in order to indicate the percentage of men in each division who remained there constantly for every one of the four years. This table shows that the upper and lower thirds of the class are the most constant in their rank, for 36 per cent. remained in the upper third constantly and 27 per cent. in the lower, while only 10 per cent. of the middle third remained there for four years. Those students who drop from the upper to lower third in the third year may be the ones pri- marily interested in the fundamental sciences, and not in clinical work. There are usually one or two such individuals in each class. We do get a surprising revelation of the incon- staney of a large proportion of the class. Only 24.7 per cent. of the group studied remained constantly in one division for four years, 57.3 per cent. went up or down one division, and 18 per cent. up or down two TABLE Mf Ko SY x x Sa SS < 2, JUNE 30, 1922] divisions during the course. This shows that no class could have been even approximately grouped for the entire course on the basis of the first year’s averages. Finally those men in the group who had first year averages of less than 72 per cent. were picked out. It was thought that these were the borderline men, students who might have been dismissed from school had their grades been only one or two per cent. lower. The object was to observe the further progress of this group with regard to the other students. There were 15, or 16.8 per cent., of the stu- dents with a first year average under 72 per cent. Forty per cent. of them had their pre- medical training at Washington University, 40 per cent. at the smaller colleges, and 20 per cent. at state universities. At the end of the fourth year 40 per cent. of these men had grades above the average for the senior year, 20 per cent. ranked in the upper third of the senior class, 27 per cent. in the middle third, and only 53 per cent. in the lower third. Of the 20 per cent. in the upper third of the senior class, one third had pre- medical training at Washington University, one third at a small college, and one third at a state university. The middle and lower thirds were equally divided between the small colleges and the universities. So it would seem that if poor preliminary training were the cause for the low first year average of these students we must blame the universities equally with the smaller colleges, for the percentage of advance in grade was equally divided between students from Washington University and such colleges as Central, Missouri Valley, Southwestern, and Christian Brothers’. As almost 50 per cent. of these men who might easily have been dismissed from school on their first year’s record made mediocre and even excellent students during their senior year, the question arises as to how many of the men with first year grades just below 70 per cent. who are now dismissed from school might reach the upper third of their class were they allowed to remain. Can we say it would be less than 20 per cent.? Yes, because many questions are considered in giving a student a grade just under or just over 70 per cent., SCIENCE 693 amongst them being just this possibility of im- provement. However, these figures should make us in the future think even more carefully before declaring a student unfit for the study of medicine on the basis of his first year’s record. M. F. WreymMann WASHINGTON UNIVERSITY ScHooL or MEDICINE CHARLES BASKERVILLE THe death of Charles Baskerville, last Jan- uary, was a great calamity to the chemical pro- fession. His end was premature—he was near- ing 52 years of age—and it brought a poignant sense of bereavement to his numerous friends. He did not live to see his life’s work done, but he departed from a world which will evermore be the richer for having once had him. Deeply and peculiarly American, an aristocrat by birth, Charles Baskerville was nevertheless broad and cosmopolitan in all his educational work, and honored by his students, pedagogic associates and professional colleagues. A man of high quality whose poise and personality early established leadership, his cheerfulness, sympathetic helpfulness and constant produc- tivity brought the admiration and respect of all who had the privilege of being near him. For thirty years Charles Baskerville occupied a prominently successful position in chemical education (University of North Carolina, his alma mater, 1891-1904; College of the City of New York since 1904); but, in addition, he found time for the conduct of original re- searches of value (first on the rare earths and later on the chemistry of anesthetics), while his inventions in the refining and hydrogenation of vegetable oils, plastic compositions and rein- forced metals are of recognized industrial im- portance. In addition to 190 educational, scientific and technologie papers, Charles Baskerville was the author of the following books: “School Chem- istry,’ 1898; “Key to School Chemistry,” 1898; “Radium and Its Applications in Medi- cine,” 1906; “General Inorganic Chemistry,” 1909; “Laboratory Exercises” (with R. W. Curtis), 1909; “Progressive Problems in Chem- istry” (with W. L. Estabrooke), 1910; “Quali- 694 tative Analysis” (with L. J. Curtman), 1910; “Municipal Chemistry” (with other experts), 1911; and “Anesthesia” (with J. T. Gwath- mey), 1914. Charles Baskerville became a member of the American Chemical Society in 1894 and later, as councilor and chairman of important com- mittees, rendered much valuable service. His activities on the society’s committee on occu- pational diseases in the chemical industries were especially prominent. He was one of the most constant attendants upon the annual meetings, effectively laboring for the best inter- ests of the society. He was also a fellow of the London Chemical Society, a member of the Society of Chemical Industry, of the American Institute of Chemical Engineers, of the Amer- ican Electrochemical Society, of the Washing- ton and New York Academies of Science, of the Franklin Institute, and of the American Association for the Advancement of Science. Charles Baskerville’s great forte was in making practical suggestions for the better conduct of affairs. At North Carolina and later at the College of the City of New York, he was respected as an able teacher who kept in close and sympathetie touch with his stu- dents; but he did not confine himself to the teaching side of education. Upon the comple- tion of the chemical laboratory of the College of the City of New York, which he designed, he took rank among the foremost laboratory directors of the United States. He was indeed an organizer and administrator of the highest order. Indomitably energetic in his executive duties, and aided by an active staff of carefully selected chemical specialists, he succeeded in establishing and operating a strong department, and in consequence his influence extended throughout the institution. Constantly alert to help and keenly interested in bettering condi- tions, his accomplishments for his associates were numerous. His most attractive personal characteristics led to friendships of weight, which, in turn, benefited his colleagues and students. An intellect more powerful from its happy union of scientific ability with broad culture has probably not been seen in the American chemical profession. He was inferior to none in extent of literary acquirement, in penetra- SCIENCE [Von. LV, No. 1435 ting and fertile executive ingenuity, and in general equipoise of mind. And withal he tried to be his “own man,” generous, kindly and sympathetic. The spirit of goodness is ever the same; but the modes of its manifesta- tion are numberless, and every sterling man is original. The vigor and sincerity of this sterling man made his friendship a treasure. W. A. Hamor SCIENTIFIC EVENTS THE PENSION AND INSURANCE PLAN OF PRINCETON UNIVERSITY A PENSION and insurance plan for the Prinee- ton University teaching staff was adopted on June 19 by the board of trustees at their an- nual meeting, held in connection with the uni- versity’s one hundred and seventy-fifth com- mencement exercises. It provides for the raising of a special fund of $1,000,000 not later than 1925, to provide the money that will be required under the trustees’ action. The plan, which was placed before the trus- tees by a special pension committee of which John O. H. Pittney is chairman, supplements the provisions of the Carnegie Foundation, of which about 90 per cent. of the faculty are at present beneficiaries. Any member of the university teaching staff may, under the plan approved, retire at the age of 65, and every member must retire at 68, provided, however, that in special cases by a vote of the board of trustees an individual may be continued in active service beyond the retiring age period not exceeding three years. The general provisions of the plan are as follows: Every member so retiring shall be entitled to receive during the remainder of his life an annual retiring allowance equal to one half of his annual salary as teacher at retirement: Provided that the obligation of the university shall be reduced by the amount of any Carnegie or similar allowance to which any such member may be entitled. Any member so retiring, not immediately entitled to a Carnegie allowance, shall receive from the university his half salary as before defined (with such additions thereto as may be necessary to qualify him for the maximum Carnegie allowance) until he is entitled to maxi- mum allowance under the Carnegie rules. Any JUNE 30, 1922] member of the teaching staff who is entitled to a Carnegie retiring allowance and who forfeits such retiring allowance because of any voluntary act by which the same is forfeited under the Carnegie rules, may be deprived of his retiring allowance from the university. The university will provide life insurance that shall assure to each member of the teaching staff the payment of $5,000 on his death before his retirement, payable to his wife if he leaves one, otherwise to his children, or, if he leaves none, then to such person as he may, with the approval of the president, designate. “An alternative” plan” submitted by the com- mittee on pensions and also approved covers the cases of members of the faculty who hold deferred annuity policies issued by the Teach- ers’ Insurance and Annuity Association of America or other companies approved by the university finance committee. The university will, on the request of a member of the faculty and his relinquishment of all benefits under the insurance and pension plan, contribute to- ward the payment of the premiums on such annuity policies a sum not exceeding five per cent. of his annual salary, nor a maximum of $300. GIFTS TO THE AMERICAN MUSEUM OF NATURAL HISTORY Girts of $1,000,000 by Mr. John D. Rocke- feller, Jr., and $250,000 by Mr. George F. Baker to the American Museum of Natural History were announced by President Henry Fairfield Osborn at a meeting of the executive committee of the board of trustees last week, when the following resolutions were passed: Resolved, That the trustees accept with grateful thanks the splendid gift of $1,000,000 presented to the museum by Mr. John D. Rockefeller, Jr., for its corporate purposes and hereby take pleasure in applying it to the permanent endow- ment fund, the principal to be kept invested and the income only to be expended for the work of the institution. This munificent gift, valued at more than a million dollars, is the more appreciated because it is received at a time when the increase of the permanent endowment by at least $2,000,000 stands as the paramount need of the museum, in order that its scientific exploration and research may not be curtailed and in order that it may continue to render to public education, especially SCIENCE 695 through the school system of the city and country, a service which is increasing in importance and is receiving universal approval of educators. Mr. Rockefeller’s attitude in his generous terms of gift and in his liberal-mindedness with respect to the use of this fund is a further source of deep satisfaction and encouragement to the trustees be- cause it indicates his hearty endorsement of the aims and purposes of the museum and of the trus- tees’ policy in its development and expresses his belief in the present and future service which it can render to science and education for all the people. In recognition of Mr. Rockefeller’s interest in the museum, the trustees take pleasure in hereby electing him a benefactor. Resolved, That the trustees desire to record their deep sense of gratitude to Mr. Baker for his generous gift of $250,000, which constitutes the initial contribution to the much needed en- larged endowment for the growth and develop- ment of the museum. The trustees deeply appre- ciate not only the intrinsic value of the gift, but especially the generous attitude of the donor in permitting the unrestricted use of the income of this fund—an action which is indicative of his confidence in the administration of the museum and the aims and purposes of the institution. In recognition of Mr. Baker’s earlier contributions, the trustees had previously elected him a_bene- factor, and can therefore merely express their gratitude to him by extending their heartfelt thanks and best wishes for continued good health and happiness. THE INTERNATIONAL ASTRONOMICAL UNION AT ROME Atv the meeting of the International Astro- nomical Union at Rome from May 2 to 10, ac- cording to a report in The Observatory, the adherent countries represented were Australia, Belgium, Brazil, Canada, Czecho-Slovakia, Denmark, France, Great Britain, Holland, Italy, Japan, Mexico, Norway, Poland and the United States. Greece and South Africa, though adhering to the union, were not repre- sented, while Roumania and Spain were rep- resented, although the formalities connected with adhesion to the union had not been com- pleted. The list of committees for the coming three years drawn up by the executive committee was adopted. They were as follows, the name of the chairman being given in each case: 696 Relativity, Levi-Civita (Italy); Notations, Stroobant (Belgium); Ephemerides, Hichelberger (U. S. A.); Bibliography, B. Baillaud (France) ; Telegrams, Strémgren (Denmark); Dynamical Astronomy, Andoyer (France); Instruments, Hamy (France); Solar Physics, Hale( U.S. A.); Waye-lengths, St. John (U. 8. A.); Solar Rota- tion, Newall (Great Britain); Physical Observa- tions of Planets, Comets and Satellites, Phillips (Great Britain); Lunar Nomenclature, Turner (Great Britain); Wireless Determination of Longitude, Ferrié (France); Variation of Lati- tude, Kimura (Japan); Positions of Planets, Comets and Satellites, Leuschner (U. 8S. A.); Shooting Stars, Denning (Great Britain); Carte du Ciel, Turner (Great Britain); Stellar Paral- laxes, Schlesinger (U. 8S. A.); Photometry, Seares (U. S. A.); Double Stars, Aitken (U. S. A.); Variable Stars, Shapley (U. 8S. A.); Nebule and Clusters, V. M. Slipher (U. 8S. A.); Spectral Classification, Adams (U. S. A.); Radial Veloci- ties, Campbell (U. S. A.); Time, Sampson (Great Britain). Sir Frank Dyson gave, on behalf of the dele- gates of Great Britain and, more particularly, on behalf of Professor Newall, an invitation to the union to meet in Cambridge in 1925, and also to be present at the celebration of the two hundred and fiftieth anniversary of the founda- tion of the Royal Observatory, Greenwich. This invitation was seconded by Mr. Stratton, and was accepted after invitations from Poland and eastern center in the United States had been noted for 1928. The following were elect- ed to act as officers and executive of the union for the coming three years: President: Professor W. W. Campbell (U.S: A:): Vice-presidents: Professor Cerulli (Italy), M. Deslandres (France), Professor Hirayama (Japan), Mr. Hough (Great Britain), Professor de Sitter (Holland). Secretary: Professor Fowler (Great Britain). HONORARY DEGREES CONFERRED BY YALE UNIVERSITY ON SCIENTIFIC MEN At the commencement exercises of Yale Uni- versity on June 21, President James Rowland Angell conferred the honorary doctorate of science upon Dr. John C. Merriam and Mr. J. J. Carty and the doctorate of laws on Dr. Russell H. Chittenden. In presenting the candidates SCIENCE ” science. [Vou. LV, No. 1435 for the degrees Professor William Lyon Phelps spoke as follows: JOHN CAMPBELL MeERRIAM: President of the Carnegie Jnstitution, paleontologist and educator. Born in Iowa, where he took his first degree at Lenox College in 1887. Doctor of philosophy of the University of Munich. He began his profes- sional career as an instructor in paleontology and historical geology at the University of California in 1894, and since that date he has become a leading authority in fossil reptiles and fossil mammals of western North America, and of gen- eral historical geology of the Pacific coast region. He is a member of many learned societies and his publications are numerous and important. He was for years professor of geology and dean of the faculties at the University of California. He was largely instrumental in establishing the Pacific exploration project which has taken on large dimensions, involved wide ranges of science and large numbers of scientists. During the late stages of the war, he acted as chairman of the National Research Council. He is a member of the National Academy of Sciences and widely tegarded by scientific men as one of the half dozen conspicuous representatives of American He combines to an extraordinary degree ability as an investigator with ability as a teacher. JOHN JOSEPH Carty: Vice-president of the American Telephone and Telegraph Company, A pioneer in the development of telephone science since 1879. He designed and constructed the first metallic cireuit multiple telephone switchboard. A high authority states that his original re- searches published in 1889 demonstrate the pre- ponderating effect of electrostaic induction in producing cross-talk on adjacent telephone cir- cuits. Cross-talk is presumably used only in a technical sense. He invented the method of com- mon battery work now in general use throughout the world. The bridging telephone was designed by him; this forms the basis of all farmers’ party- lines, thus adding social knowledge and delight to the existence of wives. He is a leader in the movement to encourage research in pure science at the universities. During the war he was chairman of the executive board of the National Research Council. He rendered invalu- able service in preventing the interruption by the enemy of our trans-Atlantic cable communications. He designed the telephone and telegraph system for the American Army in France. He served as colonel in the United States Army as a staff offi- cer, and is now brigadier-general of the Officers’ Reserve Corps. For his services in establishing farmers’ JUNE 30, 1922] the telephone system in Japan, he received there the Order of the Rising Sun and of the Sacred Treasure. For his war services, he was given the formal thanks of the French Army, the cross of Officer of the Legion of Honor and the Distin- guished Service Medal from the United States government. RusseLL Henry CHITTENDEN: Dr. Chittenden was born in New Haven, and his active career has been identified with the Sheffield Scientific School, a fortunate thing for that institution. He took his bachelor of philosophy degree there in 1875. After taking his doctorate in the Graduate School, he studied at Heidelberg, and has received hon- orary degrees from the University of Toronto, University of Pennsylvania, Washington Univer- sity, and the University of Birmingham in Eng- land. His researches and publications in the field of physiological chemistry have made him one of the world’s foremost authorities; and during the war he represented America on the Inter-Allied Scientific Food Commission, which held sessions in London, Paris and Rome. In 1898 he was appointed director of the Sheffield Scientific School, where he immediately showed executive ability as remarkable as his powers of research. Under his leadership the Sheffield Scientific School became a liberal college, one of the best in America, where the study of the humanities had no stronger friend than the great scientist who directed the institution. Its growth in num- bers and in buildings and in resources was phe- nomenal; leading authorities were numerous on the faculty, Dr. Chittenden’s devotion to the avocation of fishing enabling him to be a good fisher of men. He retires from office this year in the plenitude ot his powers, with the respect of the best scholars in Europe and America, with the admiration of his colleagues, and with the - devoted affection of thousands of students who have been graduated under his administration. SCIENTIFIC NOTES AND NEWS Proressor T. H. Morean, of Columbia Uni- versity, was on June 1 formally received into the Royal Society and delivered the Croonian lecture. On the following day he and Dr. Sturtevant addressed the Genetical Society at its annual meeting, held at the John Innes Horticultural Institution. On June 8, Pro- fessor Morgan lectured at the University of Edinburgh and its degree of doctor of laws was presented to him. SCIENCE 697 Dr. Grorce ELLery Hause, director of the Mount Wilson Observatory and _ honorary chairman of the National Research Council, has been elected the American representative ‘on the international committee which, under the auspices of the League of Nations, is to study and suggest methods of intellectual co- operation throughout the world. At the commencement exercises of Princeton University, the doctorate of science was con- ferred on Dr. Arthur Gordon Webster, pro- fessor of physics at Clark University; Dr. Henry Crew, professor of physics at North- western University, and Dr. John Campbell Merriam, of the Carnegie Institution of Wash- ington. The doctorate of laws was conferred on Dr. Livingston Farrand, president of Cor- nell University. Dr. Vernon Kewuoae, of the National Re- search Council, was given the honorary degree of doctor of science by Oberlin College on June 21. THE honorary degree of doctor of laws was conferred on the secretary of agriculture, Henry C. Wallace, by the Iowa State College of Agriculture and Mechanics Arts at the com- mencement this month. Secretary Wallace is an alumnus of the institution and gave the commencement address. Dr. Harotp L. Amoss, associate member of the Rockefeller Institute for Medical Research, New York, on June 7 received the degree of doctor of science from George Washington University, Washington, D. C. The scientific staff of the Rockefeller Institute on June 12 gave a dinner in honor of Dr. Amoss, who has accepted the appointment of associate professor of medicine at the Johns Hopkins Medical Sehool, Baltimore. Amone those knighted on the occasion of King George’s birthday were Protessor William Maddock Bayliss, professor of general physi- ology in University College, London; Professor Frederick William Keeble, Sherardian pro- fessor of botany at Oxford University, and Dr. Edward John Russell, director of the Rothamsted Experiment Station. A COMPLIMENTARY dinner was given to Dr. 698 Henry Head, F.R.S., on May 26 in recognition of his eminent services to neurology as editor of Brain for seventeen years. Sir Charles Sherrington, president of the Royal Society, was in the chair and addresses were made by Sir David Ferrier and Dr. Head. Dr. Gordon Holmes has been made editor of the journal. Dr. Leon C. Havens, associate in immunol- ogy in the Johns Hopkins School of Hygiene and Public Health, has been appointed director of laboratories of the State Board of Health at Montgomery, Alabama. H. A. Noyss has severed his connection with the Mellon Institute of Industrial Research of the University of Pittsburgh to accept the posi- tion of research chemist for the Michigan De- partment of Agriculture. J. A. McCuintock, plant physiologist at the Georgia Experiment Station, has resigned, effective July 1, to accept the position of asso- ciate plant pathologist at the University of Tennessee Agricultural Experiment Station. Dr. Cuartes D. Watcort, secretary of the Smithsonian Institution, has left for the Cana- dian Rockies to continue geological explora- tions. Proressor J. G. NeepHaM, head of the de- partment of biology and entomology in Cornell University, is to exchange for the college year 1922-3 with Dr. William A. Hilton, of the de- partment of zoology, Pomona College, Clare- mont, California. Dr. G. Canpy Ropinson, acting professor of medicine at the Johns Hopkins University during the current year, will spend the summer in study at the University of Copenhagen be- fore assuming his duties as professor of medi- cine at Vanderbilt University. Dr. JouNn Rick Miner, associate in the de- partment of biometry and vital statistics of the School of Hygiene, the Johns Hopkins University, has been granted leave of absence for the next academic year and will spend the time in study and travel abroad. During Dr. Miner’s absence, his position in the department will be filled by Dr. Flora D. Sutton, who has the degree of doctor of philosophy in mathe- SCIENCE [Vou. LV, No. 1435 matics from Johns Hopkins University, and has for some time been connected with the department of biometry and vital statistics. Dr. J. W. TURRENTINE, formerly director of the Experimental Kelp-Potash Plant of the U. 8. Department of Agriculture at Summer- land, California, has obtained furlough from the department for a period of six months to act as consulting chemist for the U. S. Kelp Products Corporation, the newly organized concern which has purchased the government’s plant and is now proceeding with the manu- facture of kelp products. Proressor FRANK Tututy, professor of philosophy at Cornell University left on June 8 for Houston, Texas, to give the commence- ment address at the Rice Institute. From Houston he plans to go to Los Angeles to give a course of lectures before the Summer School of the Southern Division of the University of California. On June 6, at the Denver Public Library, Dr. C. P. Gillette, director of the Colorado Agricultural Experiment Station, delivered a lecture on ‘Heredity and the improvement of man,” under the auspices of the Genetic Foun- dation of Colorado. Proressor EveGene C. BINGHAM gave an illustrated lecture in Philadelphia on the even- ing of June 15 before the Philadelphia Section of the American Chemical Society on the sub- ject of “Fluidity and plasticity.” A Menvet festival was organized at Vienna by the Zoologic-Botanical Society to commem- orate the hundredth anniversary of the birth of © Gregor Johan Mendel on June 7. Dr. WiuLi1am CaRRUTHERS, from 1859 to 1895 assistant and keeper of botany in the British Museum, known for his work in paleobotany, died on June 2, at the age of ninety-two years. PROFESSOR WILLIAM GOWLAND, emeritus pro- fessor of metallurgy in the Royal School of Mines, London, has died at the age of seventy- nine years! THE deaths are also announced of Professor C. V. Zanetti, director of the Institute of Phar- macological Chemistry of the University of June 30, 1922] Parma, and of Professor Jené Holzwarth, who held the chair of radiology in the University of Budapesth. A cABLEGRAM from Prague announces that Professor Edmund Weil has died from typhus contracted by infection in his laboratory at Lemberg, where he was working at the invita- tion of the Polish government. PrepaRATIONS for the fourth Boston meeting of the American Association for the Advence- ment of Science, to be held from December 26 to 30, by invitation of the Massachusetts Insti- tute of Techonology and Harvard University, are progressing in a very satisfactory way. The privilege of reduced railway rates for those attending the meeting has already been granted by the New England Passenger Association, the Trunk Line Association, the Central Pas- senger Association, the Southeastern Passenger Association, and the Eastern Canadian Passen- ger Association. This privilege is based on the certificate plan, and the cost of the round trip to Boston will be one and one half times the regular one-way tariff. The region thus far included extends about to the Mississippi River. Stema Deuta Epsinon, graduate women’s scientific fraternity, founded at Cornell Uni- versity, May, 1921, recently became incor- porated and installed Beta Chapter at the Uni- versity of Wisconsin on April 25. The national officers, who serve until the convention in Bos- ton in December at the time of the meetings of the American Association for the Advancement of Science are: Christianna Smith, Cornell, president; Hlizabeth Smith, Wisconsin, first vice-president; Helen M. Johanns, Wisconsin, second vice-president ; Evelyn Fernald, Cornell, secretary; Helen Brewster Owens, Cornell, treasurer. Dr. Vernon Ketioae writes: “The industry and commerce committee of the Polish parlia- ment has drafted a bill providing for the adop- tion of the metric system of weights and measures for the whole of reunited Poland. The bill provides that beginning January 1, 1923, all retail trade in Poland will be conducted on this basis, and that on and after January 1, 1924, all trade, whether retail or wholesale. At present the metric system is in use in the parts of Poland which were formerly under German SCIENCE 699 and Austrian rule, but the Russian system, with its versts and poods, is still being used in former Russian Poland. Following an unconditional gift of its large collection of books and documents on public health, medical and related subjects to the Sur- geon General’s Library of Washington, the Prudential Life Insurance Company of America has made a similar, though less extensive, pre- sentation of its books and documents on fores- try and agriculture to the library of Yale University. Proressor ARNOLD Pick, the well-known neurologist at Prague, is about to retire from teaching and wants to sell his library. It con- tains some 3,000 works on psychiatry, neu- rology and psychology, besides 7,000 reprints and theses. THe British Medical Journal states that strong protests have been made by the medical profession in France, and especially by the Syndicat général des médecins frangais électro-radiologistes, against the appointment by the prefect of the department of the Seine of a radiographer who is not a qualified medi- cal practitioner to be director of the radio- logical laboratory of the Salpétriére Hospital in suecession to the late Dr. Charles Infroit. Mr. F. H. Rippts, president of the Amer- ican Ceramic Society, writes: “Allow me to submit a correction to the item relating to the annual meeting of the American Ceramic Soei- ety which appeared in Sciznce on June 2. As it stands, it is made to appear that in the inves- tigation on special porcelains adapted for spark plugs, ete., conducted by the Bureau of Standards, the work of Mr. A. V. Bleininger was of a secondary and minor character. Per- mit me to say that his contribution was vital and important and that the final conclusions reached were the result of close cooperation.” A REFLECTING telescope with a 61-inch mir- ror is to be made for Ohio Wesleyan University. It will be housed in the Perkins Observatory, of which Professor Clifford Crump is director. There are only two reflecting telescopes in the world which will exceed this new instrument in size, according to officials of the Warner and Swasey Company, which has contracted to make the installation. These are the 100- 700 inch reflector at the Mount Wilson Observatory in California and the 72-inch one at Victoria, British Columbia. The $250,000 for its con- struction was given by Professor M. H. Per- kins, for twenty-five years an instructor in mathematics at Ohio Wesleyan, who has made many other contributions for the upkeep and maintenance of the observatory. A feature of the telescope is that it will be devoted pri- marily for the use of the students in the uni- versity and only secondarily for research. This is the first of the large instruments to be so used. Three years will be required to complete the installation. A Bera Cuaprer of Sigma Delta Epsilon, a women’s honorary scientific society, was re- cently installed at the University of Wisconsin. The society has a membership of 33 women who are doing advanced work in science in the University of Wisconsin, the federal govern- ment and the state scientific institutions in Madison. The officers are Dr. Eloise Gerry, U. S. Forest Products Laboratory, president; Miss Marion E. Phelps, department of physies, vice-president and chairman of the membership committee; Miss Helen Johann, cereal investi- gations U. 8. Department of Agriculture, sec- retary; Dr. Elizabeth A. Smith, department of zoology, treasurer; and Miss Nevada Evans, department of plant pathology, chairman of the program committee. The meetings are held twice a month and give opportunities for pre- sentation and informal discussion of the results of research as well as social intercourse. The society is non-seeret. Its name means united in friendship through science. The officers- elect for the coming year are Professor Eliza- beth A. Smith, zoology, president; Professor Helen Parsons, food chemistry, vice-president; Miss Helen Johann, cereal investigations, secre- tary; Miss Ruth Chase, zoology, treasurer; and Miss Emma Fiske, botany, chairman of the pro- gram committee. THE Biological Station of the University of North Dakota at Devil’s Lake is planning to ‘continue this season the work which it has been conducting for a number of years past, which includes experiments on the influence of solu- tions of different salts of varying concentra- tions upon fishes, in the attempt to ascertain SCIENCE [Vou. LV, No. 1435 the cause of death of fish in such solutions. It is also continuing the biological survey of the state, upon which considerable progress has already been made. The work this year will be centered, chiefly on the fishes, reptiles and Amphibia. Reports have already been pub- lished, or are in press, dealing with a number of groups, including the birds, mollusks, Pro- tozoa, locusts, and bugs (Hemiptera). This latter work is in charge of Miss Crystal Thomp- son, of the Amherst College Museum, and is in cooperation with the Museum of Zoology at Ann Arbor. The environment of Devil’s Lake, with numerous ponds differing markedly in their physical and chemical characteristics, marshes, woodland, and cultivated land, con- tains a rich fauna for ecological studies, espe- cially on aquatic life. WE learn from Nature that the Strangers’ Hall, Norwich, an old city merchant’s house, with groined undereroft, fifteenth century ban- queting hall, and other paneled rooms of later date, has been offered by its owner, Mr. Leon- ard G. Bolingbroke, to the corporation of Nor- wich for the purpose of an English Folk and Historical Museum, in conjunction with the Norwich Castle Museum. Mr. Bolingbroke has also offered his collection of old domestic appli- ances and other “bygones” illustrative of the various phases of a middle-class Englishman’s home during the last four or five centuries, which will find a fitting environment in the various rooms of the house. While the aim of the museum will be historical rather than scien- tific, there will be found many exhibits of interest to students of early history and devel- opment of such subjects as the production of light and fire, domestic cookery, and other kindred objects. THE Royal Geographical Journal reports that an expedition lately left Copenhagen for the Dutch East Indies with the object of taking preliminary steps towards the establishment of a Tropical Station for Biological Research in that region. It is headed by Dr. T. Morten- sen, of the Copenhagen Zoological Museum, and the botanist is Hjalmar Jensen. The pro- ject was set on foot some years ago and has been brought to a head through the labors of a Scandinavian Society formed for the pur- JUNE 30, 1922] pose. The present expedition has been ren- dered possible by a grant from the “Rask- orsted Fund.” The probable site of the station will be in the Ké islands, previous research having shown that there is an unusual abun- dance of animal life in the waters to the west of the group. What is really a deep-water fauna is here found at comparatively small depths—200-300 meters—making it easy to col- lect rare deep-water species. It is possible that Dutch cooperation may be secured, and in any ease the intention is to give an inter- national character to the station. UNIVERSITY AND EDUCATIONAL NOTES Mrs. DororHy WHITNEY SrraicHt will give to Corneil University a million-dollar building to be used as a center for the social and recre- ational lite of the students. At the commencement of Princeton Univer- sity a gift of $100,000 was announced from James H. Lockhart, of Pittsburgh, for the en- dowment of scholarships in memory of his father, Charles Lockhart. Hearst Haut and Hearst Hall Annex weve destroyed and the Pathology Building of the University of California was damaged on June 21 in a fire with estimated loss of $100,000. Hearst Hall, a large frame structure, was the gift to the university women of Mrs. Phoebe Apperson Hearst. Mr. William Randoiph Hearst has undertaken to rebuild Hearst Hall and its accessory buildings in fireproof material. Dr. Haven Emerson has been appointed professor of public health and administration in the College of Physicians and Surgeons, Columbia University, and given the task of working out a plan for the organization of the Institute of Public Health established by the bequest of the late Joseph A. DeLamar. Mr. Sicrrep Haves and Mr. Robert Evans have been appointed instructors in the division of agricultural biochemistry of the University of Minnesota. Dr. Paul F. Sharp, instructor in the division, has been appointed assistant chemist of the Montana Agricultural Experi- ment Station. Proressor §. I. Kornuausrr, of Denison SCIENCE 701 University, has been appointed head of the de- partment of anatomy of the School of Medi- cine of the University of Louisville, in the place left vacant by Dr. Chas. Brookover. During the summer Dr. Kornhauser will be biological assistant to Colonel William G. Atwood, direc- tor for the committee on marine piling investi- gations of the National Research Council. Dr. AuFrep PovaH, formerly associate pro- fessor of plant pathology and associate plant pathologist at Alabama Polytechnic Institute, has been appointed assistant professor of bot- any at Northwestern University. Dr. A. O. WeeEsE, professor of biology at the University of New Mexico for the past ten years, has accepted the professorship of biology at James Millikin University, Decatur, Illinois, recently made vacant by the death of Dr. A. A. Tyler. Professor Weese has spent the past year at the University of Illinois. DISCUSSION AND CORRESPOND- ENCE THE NEW CATASTROPHISM AND ITS DEFENDER REFERENCE was made in my contribution to Science for February 17 to Professor Price, alleged geologist, upon whose scientific vagaries a reactionary theology relies much in its recent attack on evolution—the result of a reeru- descence of the old conflict which such a the- ology has ever waged against the progress of selence. George McCready Price, who since 1906 has held positions as professor of geology, College of Medical Evangelists, Loma Linda, Califor- nia, professor of English literature, Fernanda Academy, California, and professor of chem- istry and physics, Lodi Academy, California, is evidently in the religious denomination (Seventh Day Adventist) to which he belongs held to be a man of considerable versatility. The writings by which he is best known are two books, “Fundamentals of Geology” (1913), and “Q. H. D., or New Lights on the Doctrine of Creation” (1917), and numerous articles in the religious press—chiefly the Philadelphia Sunday School Times. The distinctive ideas for which he stands in 702 geology (the only ones to be reviewed in this article) are: First: What he terms the “New Catastro- phism,” which turns out to be nothing more than the Old Catastrophism embodied in the Noachian Deluge. Second: A literal creation of material things (the sidereal universe with its parts appar- ently in different stages of development—its nebule, hydrogen stars, metallic stars, carbon stars and dark stars); and all animate things (trilobites, nummulites, graptolites, ammonites, sigillaria, the fishes of the Old Red Sandstone, the large reptiles of the Mesozoic, the mam- moth and the mastodon, the one-toed horse and the three-toed horse, and man) all at one and the same time just as set forth in the first chapter of Genesis. While not committing himself to any esti- mate of the time back of the present when all this took place, it is evident that he leans to a “short chronology’; for in Chapter IX of his Fundamentals of Geology he argues for a catastrophic instead of a uniformitarian rate for the deposition of strata. In Chapter I of his “Q. E. D.” he refers to the study of the phenomena of radioactivity as having “thrown a good deal of doubt upon the older estimates of the age of the earth,’ but he fails to inform his reader that such study has revealed the necessity of postulating a long succession of atomic transformations, and has enormously extended the length of geologic time. Realizing that if there has been a geological succession of life on the earth “‘then some form of genetic connection between these successive types is the intuitive conclusion of every thinking mind, even though the recovery of these connecting links may prove impossible,’’ and his Genesis account, which he is out to defend at all hazards, goes by the board, he flatly denies that there has been any geological succession, and sets himself to the task of en- deavoring to prove the astounding thesis “that all fossils are of the same age and none of them older than man.” In doing this he shows wide familiarity with geological literature, quoting largely from the most eminent authori- ties in this country and in Europe. Any one reading these writings of Price, which possess a certain charm of literary style, and indicate on the part of the author a gift of popular SCIENCE [Vou. LV, No. 1435 presentation which makes one regret that it had not been devoted to more laudable purpose, must constantly marvel at the character of mind of the man who can so go into the litera- ture of the subject and still continue to hold such preposterous opinions. The position of superiority he arrogates to himself is amazing: With his solicitude for har- monizing his views with those of the Bible so palpable, one of his eyes, at least, being always “kept on Genesis,’ he still has the face to accuse all “other geologists” of being biased, charging that they hold to a belief in geological succession “solely on the strength of the infalli- bility of a theory” (elsewhere referred to as the onion-coat theory of Werner) “invented a hundred years ago in a little corner of western Europe.” So much under the spell of this old Wer- nerian hypothesis are geologists still (excepting himself), that, according to Price they “invent” unconformities and faults to explain breaks and repetitions in the life succession. Price especially endeavors to find “mare’s nests” in the “alleged” great thrust faults of the earth, impugning the competency or integ- rity, or both, of the distinguished geologists who vouch for their existence: as that of Heim and Rothpletz for the great Glarus overthrust in the Alps, that of Geikie for the great over- thrust in Scotland, that of McConnell, Camp- bell and Willis for the great overthrust along the eastern front of the Rockies in Canada and northwestern United States, and finally that of Hayes for the numerous overthrusts in the southern Appalachians. Professor Price also thinks he has found an- other geological “mare’s nest,” one that ought to confound these believers in a geological sue- cession, in the fact: ‘«That the rivers of the world in cutting across the country, completely ignore the varying ages of the rocks in the different parts of their courses, and act precisely as if they began sawing at them all at the same time.’’ Evidently the conception of a superimposed river, disclosing old buried structures as it deepens its channel, so easily understood by any high school student of physiography, is beyond the mental grasp of the author of “Funda- mentals of Geology.” This then is the man who, while a member JUNE 30, 1922] of no scientific body and absolutely unknown in scientific circles, has in at least one of his contributions to the religious press (the one in which he tried to make much of the so-called anti-evolution admissions of Bateson) had the effrontery to style himself “geologist,” in the expression he there used “we geologists’; and this is the man who in his support of a literal Genesis is hailed by the “Fundamentalists” as their great champion—one who has “demon- strated the absurdity of the evolutionist’s geological theories” and has brought into prom- inence the “heretofore mute evidence of a mighty upheaval and a flood.” ArtHuR M. MILLER UNIVERSITY OF KENTUCKY KEYS IN SYSTEMATIC WORK To tHe Hprror or Science: It seems more mechanical uniformity is possible in the keys which systematists find of so much value in descriptive work. The number of forms used now is limited apparently only by the num- ber of authors publishing such keys, and among this large number of forms are many which are wasteful of space and many which are confusing to the student. Some of the mechanical requirements of a good key may be briefly summarized: 1. The key should oceupy a minimum amount of space, and should present the mini- mum difficulty to the printer. 2. The key should be capable of indefinite expansion, that is, provide for any number of groups, and no headings of groups or sections should be duplicated. 3. Any desired space under each heading should be available. 4. Coordinate groups in the key should be recognizable as such at a glance and such co- ordinate groups should be in juxtaposition. 5. The key should be as readily “run back- ward” as “run forward.” Ample reasons for all these requirements could be given but need not be detailed here. The following skeleton key shows a form which I believe meets all these requirements, and it is presented for criticism in the hope that after discussion some form of key may be found which will meet with general approval. Sec- SCIENCE 703 tions 3 and 3/ show length of printed lines when several lines are required for a section. Key To Species a-h oF THE GENUS X 1 Parsi spurned sci eeouwen nimnacntale unl 2. i, Parsijmote spurred lee ene an uses 5. Pie (3G) eeu LJ PUA SARE CE VAL Re a. PL aS aE aI ee RA age a EMILY 3. Ba (oe ee cttece rater te Sate eee Metre ret 2 Dy al Ferree eterna tot en ese nen Wee tee LL 4, 3’. Sn Re e Eeape ay Heni NE NTL db. SNCS) sia iese cea ee ee no ARON UT NEEL nes Ba OE a c. CoA | FON Verge eR UE AP eae a ru AN, EEE EAE! a) d. BYU) ets Ea eee aren e. 5’. 3 CU GSA) Hy Scene Ss ena alan Bei Ges theses cate neat aU Nee UL TANNED INWAlt Net g. 6e EK. B. Winuiamson Buurrton, INDIANA THE Y-CHROMOSOME TYPE OF _ SEX- LINKED INHERITANCE IN MAN In a short article which appeared in the Journal of Heredity for November, 1921, Richard Schofield describes a case of human inheritance whieh has very great theoretical interest. It involves the transmission through four generations of a condition called webbed toes. The condition is found only in male members of the family and is transmitted from father to son, never to a daughter nor through a daughter to her sons. It thus has the distribution in heredity of a Y-chromosome, a structure found only in the male-determining spermatozoa of certain ani- mals and never in their eggs. The Y-chromo- some accordingly is a structure possessed by male individuals only and thus forms an ap- propriate vehicle for the transmission of char- acters from father to son, quite independently of the female line of descent. All this was pointed out by Schmidt in a contribution from the Carlsberg Laboratory, which I reviewed in Science for April 8, 1921, under the title “A New Type of Inheritance.” Schmidt deseribed in a fish the first known case of inheritance of this type. This has since been confirmed in the case of another species of fish by a Japanese observer, so that it may now be regarded as well established. Schofield’s article 704 furnishes evidence that the Y-chromosome type of inheritance occurs in man as well as in fishes. W. Hy CastLe Bussty INSTITUTION, JUNE 3, 1922 THE VOCABULARY OF METABOLISM I wish to suggest in the columns of SclENCE the following new terms in the vocabulary of metabolism: (1) Eubolism, a condition of normal bodily metabolism; (2) Pathobolism, a condition of perverted metabolism of a diseased nature, as, for example, diabetes; (3) Dysbol- ism, a condition of disturbed metabolism not necessarily of a diseased nature, as, for ex- ample, alkaptonuria. I believe that these terms will supply a want in the terminology of meta- bolism. Max Kaun Beto IsRAEL HOSPITAL, New YorK SALARIES OF PROFESSORS IN POLAND I rake the following item from the weekly news release of June 7 of the Polish Bureau of Information: Because of the importance attached to their role in the life of the nation, the university pro- fessors of Poland have been granted salaries greater than those to which their official rank would entitle them. [The official rank of full professors in Polish considered equivalent to that of major generals. | If they have been in service fifteen years and are supporting families, they are to receive monthly salaries of 139,000 marks. This approxi- mates the salaries of cabinet ministers, who re- ceive about 160,000 marks monthly, and is slightly in excess of those of vice-ministers, who receive, including representation funds, about 137,000 marks. These salaries for professors have been made possible by a special provision in the state budget, appropriating 357,906,966 marks for professors’ salaries and 87,625,761 marks for the salaries of assistants, a total of nearly half a billion marks. [For the value of a Polish mark in American money to-day, consult the morning newspaper. ] universities is VERNON KELLOGG WasuHineton, D. C. SCIENCE [Vou. LV, No. 1435 SPECIAL ARTICLES THE SPIRAL TREND OF INTESTINAL MUSCLE FIBERS In the Anatomical Record for May, 1921 (Vol. 21, pp. 189-215), Professor Carey pub- lished his “Studies on the Structure and Fune- tion of the Small Intestine.” These were re- printed, in part, with the title, “Studies on the Anatomy and Muscular Action of the Small Intestine,’ as the opening article of volume 1 of the Journal of Gastro-Enterology (July, 1921). ‘The first conclusion, and the only one on which comment is here to be made, is this: The inner muscle coat of the small intestine is not composed of circular or annular rings contigu- ously placed, but is a continuous muscular sheet wound into a close helix. One complete turn is made in every 0.5 to 1 mm. or less (Anat. Rec., p. 193; Journ. Gastro-Ent., p. 9). Professor Carey characterizes the conception that the inner muscular coat is composed of discrete muscular rings with a certain degree of connection, as “a faulty anatomical heir- loom’’—an “erroneous idea which arose with the inception of the microscope and has since been accepted unchallenged.” There is, how- ever, a neglected anatomical heirloom, with which perhaps the author was unfamiliar, in the form of “A Discourse concerning the Spiral, instead of the supposed Annular, struc- ture of the Fibres of the Intestins; discover’d and shewn by the Learn’d and Inquisitive Dr. William Cole to the Royal Society” (Phil. Trans., 1676, Vol. xi, pp. 603-609). This dis- course, not now readily accessible, is so admir- ably confirmed by Professor Carey’s repetition of the work as to repay examination. At the time of Dr. Cole’s studies, Willis, in his Pharmaceutice rationalis, published two years previously, had described the interior fibers of the muscular coat as “annular, every- where girdling in close-set ranks the cavity of the intestines, and inserted into the edge of the mesentery as in a tendon.” Overlying these, and “crossing them at right angles,” he found straight or longitudinal fibers, and believed that the sinewy outer layer wrapped around them served them in place of tendons. (Earnest efforts were made by the early anatomists to JunE 30, 1922] find tendons for smooth muscle!) From the mesentery and from the fibers of the outer coat, the cireular and longitudinal muscles, respectively, received the animal spirits or nervous energy whereby they were at first inflated and distended, thereafter becoming shorter and more contracted. As to the action of the two sets of muscle fibers, he wrote: Indeed the circular fibers, having contracted successively and seriatim, constrict the diameter of the intestine; and at the same time the longi- tudinals, inflated and distended, narrow it still more and produce a downward movement, so that the contents of the intestines, thus compressed from behind, must constantly be driven forward. With such a description current, Dr. Cole begins his paper as follows: Discoursing (near two years since) with a very ingenious Person, concerning the Mechanical rea- son of the Peristaltick motion of the Intestines, which is by Anatomists deduced principally from Annular fibres, constituting, according to the re- ceived doctrine (with the right fibres immediately investing them, though, by the by; I take these to make a distinct coat) one of the coats of them; his sence was (which he told me was that likewise of some others of his acquaintance) that they might be rather numerous, though small, Sphine- ter-muscles, than single fibres, to which that mo- tion is to be attributed. For four theoretical considerations Dr. Cole dissented, namely (1) that on the supposition of circular sphineters there would be no con- tinuous lengthwise channel for the propaga- tion of motion, and (2) lateral transmission seems not to be agreeable to nature’s methods. Moreover, (3) lateral exits would tend to pre- vent distension of the fibers by the influent matter; and (4) circular muscles lack two ten- dons by the approximation of which all mus- cular work is accomplished. He therefore offered the following solution: Viz. That those fibres which have been esteemed annular, might perhaps be spiral, and so be con- tinued down in one tract to the lowest extremity of the intestines; . . . their declination being not easily discernible... But ... I consider’d ’twas too unphilosophical to acquiesce in bare specula- tion, when autopsy might be consulted; and there- fore I set upon the experiment, first in the upper intestines of an Ox, afterwards in those of Sheep and Calves... . SCIENCE 705 To effect a due disjunction of the membranes and fibres (which I found ’twas hard, if not impossible, for me to make while ’twas raw), I was fain to cause the intestine of Oxen to be boiled 5 or 6 hours, of Sheep 4; whereby the com- pages of the parts was so loosned, that the two outward coats were easily separated from that to which my search was destined, and left those reputed annular fibres naked. The results of attempting to follow, through separation, the course of the bundles of these muscle fibers—single fibers being found too small to isolate—Dr. Cole records in numbered paragraphs, from first through “eighthly.” The following are selected statements, abbre- viated (as were previous citations) : When, beginning at the top, I attempted the separation of one of these clusters of fibres towards my right hand (on that side of the intes- tine, I mean, which was turned towards me) a whole ring would come off together ...; but endeavouring it towards my left, I found, for the most part, I could easily enough unravel that cluster to a considerable length, viz., that of some- times more than two or three spans, before rup- tion, which yet at last ’twould be subject to. If I began at the lower part of the intestine, and try’d to unravel upwards, there was not much more difficulty in so doing . . . [But] the opera- tion, I observ’d would not succeed, unless I at- tempted it on the contrary order, viz., towards my right hand. When before boiling I caused the inside of the intestines to be turned outward, as I did in two tryals,...and endeavoured to unravel the fibres, I found they would come off in the con- trary order ... the intestine being inverted, the order of separation must be so too. Other observations are that the obliquity of the spiral may vary; that the spiral is less well-defined in the cecum; and that everywhere some fibers deviate from the main trend, being in the opposite order, or forming intercom- munications between the turns of the spiral. But the general conclusion reached is that the fibers altogether form “one concave helical muscle.” Where the tendons of it are fixed is not evident; but if I may have the liberty of conjecture, I should think the upper of them to be radicated at the pylorus (if not as high as the sphincter, gule); and the other at the anus. Whether the supposed annual fibres of the veins 706 and arteries may not have the same fabrick as those of the Intestines . . . I propose to be con- sidered and examined by persons of more acute hands and judgment; as I do all what I have here delivered, nor daring too much to trust even the informations of my own hands and eyes, till I find them confirmed by those of others, more judicious as well as more dextrous in making ex- periments. After two centuries Professor Carey has sup- plied the needed confirmation except im one particular; he finds that the spiral winds in the opposite direction! Carey describes a “left-handed helix,’—a spiral which reverses the direction of the rotation of the embryonic stomach and goes counter to the twisting of the cwsophagus. But Dr. Cole recorded the type familiar in dextral gastropod shells, which aceords with the rotation of the stomach. Although it often happens in nature, as noted by Thompson, that two opposite systems of geodetic spirals exist together, and interfere with one another, forming a criss-cross pat- tern! (and indeed such a condition has been recorded for the w@sophageaf muscles of rum- inants?), it can not be invoked to reconcile the conflicting statements regarding the direction of the intestinal spiral, since both Cole and Carey agree that there is but one well-defined cleavage. Under these circumstances, the ques- tion has been referred to Professor Sykes, who, during the past season, while studying in the Harvard Laboratory, has frequently unwound the circular muscle of the intestine. Although his results are to be published elsewhere, I am permitted to report that he has verified the early work of Dr. Cole in regard to the direc- tion assumed by the spiral; it is dextral. If this is so, Dr. Carey’s explanation of that pri- mary torsion of the embryonic intestine which determines the disposition of small and large bowels in the adult, though very ingenious, must be considered illusory, for it depends on sinis- tral coiling and tension.® The origin of the spiral trend of the muscles is ascribed by Dr. Carey to “the rotating spiral 1Growth and Form, 1917, p. 489. 2Owen: Comp. Anat. of Vert., 1868, Vol. 3, p. 470. 3 Journ. Gen. Physiol., 1920, Vol. 3, p. 76 et seq. SCIENCE [Vou. LV, No. 1435 growth of the epithelial cells,’* but this is a phase of the problem which invites further tudy. ines Freperic T. Lewis Harvard MEDICAL ScHOOL NEARCTIC PROTURANS THe Protura—the most primitive of all the insects, if indeed they are insects—were first reported from the Nearctie Region in 1909. In that year the eminent Italian zoologist and entomologist, F. Silvestri, collected and de- seribed under the name of Hosentomon wheeleri, a single species from New York. For the next twelve years no record was added from the vast area of the Nearctic. The second record from this region was ob- tained in 1921 from the vicinity of Washing- ton, D. C., the first specimen being found by H. S. Barber, who accidentally came across it in some leaf mold in which he was rearing beetle larve. Other specimens of the same species, which proved to be new, were soon taken, and the species described by the writer as Acerentulus barberi. Following the initial discovery at Wash- ington the writer has been fortunate enough to encounter Proturans in large numbers and in considerable diversity at Takoma Park, Mary- land. Here during the spring of 1921 no less than twelve species, representing six genera, were found, ten of them proving to be new. These have been described in a paper presented at a meeting of the Entomological Society of Washington.? To these records obtained in the vicinity of Washington are now added several more from widely separated localities, and in some instances from different life zones of the Nearctie Region. These localities are as fol- lows: Chesapeake Beach, Md.; top of Blue Ridge Mountains, near Bluemont, Va. (eleva- tion 1,200 feet); near Prospect Hill, Va.; * Anat. Rec., 1920, Vol. 19, p. 220. 1“*A Second Nearctie Species of Protura, Acerentulus barberi, new species.’’ Ent. News, Vol. XXXII, pp. 239-241. 2“*New Genera and fyecies of Protura,’? Proc. Ent. Soc. Wash., Vol. XXIII, No. 9, pp- 193-202, Pl. XVI. JUNE 30, 1922] Great Falls, Va.; Tallulah, La.; Houston, Tex. ; Chesterville, Ill.; near Decatur, Ill. Proturans have been searched for but not found in the following localities: Vicksburg, Miss.; Dallas, Tex.; Ames, Ia.; Toronto, Can. In addition, also, Professor Silvestri has looked for them at Ithaca, N. Y., without find- ing any. The known distribution up to date of Pro- turans in the Nearetic is shown by the accom- panying figure, each positive record being indicated by a large dot and each negative record by a question mark. It would be premature at this time to attempt any generalizations in regard to the Nearetic distribution of these most primitive hexapods, yet by way of summary it may be noted that up to the present Proturans have been found in 9 localities in the Upper Austral Life Zone, these records coming from 4 different states; from 2 localities in the Lower Austral Life Zone, the records being from different states; from 1 locality in the Transition Life Zone. Of the negative records, 1 is from the Upper Austral, 2 from the Lower Austral and 2 from the Transition. The only life zone in which these hexapods have been found in either abundance or diversity is the Upper Austral. In the Lower Austral only two minute under-bark species The known distribution of Nearctic Proturans. SCIENCE 707 were taken—two specimens of .Hosentomon pallidum Wwing from Tallulah, La., and two specimens of Eosentomon minimum Ewing from Houston, Tex. In the Transition, three specimens of Eosentomon wheeleri Silvestri and one specimen of Eosentomon pallidum Ewing were taken from decaying leaves and twigs near Bluemont, Va., at the top of the Blue Ridge Mountains (elevation 1,200 feet). H. E. Ewine U. S. Nationa Museum STEM END ROT OF APPLES During the late spring of 1921 a large number of apples were found which developed a decay at and around the base of the stems. These apples were in a lot that had been re- moved from a cold storage, temperature of 32° and held for a few days at 45° Fahr. When placed in moist chambers such apples very soon decayed without wrinkling, becoming soft and watery. The decay was of a sharply de- fined nature, such that the affected parts could be easily removed. Normally these decayed apples were soon covered with green mold. On examining the stems of apples in storage it was found that many stems were green with spores. Cultures of this mold were made by the poured plate method. The fungus was be- lieved to be Penicillium expansum Link., and was later identified as such by Mr. Charles Thom of the U. 8. D. A., Bureau of Chemistry. A search of the literature on apple decay was made, but no mention of the entrance of a decay-producing organism through the stem was noted. The decay of apples ordinarily caused by P. expansum is invariably mentioned in connection with abrasions of the skin, such as insect punctures, wounds or injuries of a mechanical nature. Some writers mentioned the infection as entering through the calyx or blossom end but no one noted stem end infec- tion. The matter was taken up with Mr. H. A. Siegler, assistant pathologist of the U. S. D. A., Bureau of Plant Industry; Mr. Charles Brooks, pathologist, and Dr. Charles Thom, mycologist, U. 8. D. A., Bureau of Chemistry, none of whom had noted such a decay gaining access to the apple by way of the stem. In fact they 708 doubted the possibility of any fungus travers- ing the dry stem of an apple. It is well proven that stem end rots oceur in other fruits, for example, the stem-end rot of citrus caused by Phomopsis sp. and the stem-end rot of both citrus and watermelon caused by two species of Diplodia. In the fall of 1921, large, mature Yellow Bellefleur apples were secured from trees in a Berkeley garden. These apples were picked with the fruit spurs attached, carefully washed in wood alcohol, mercuric chloride solution 1-1000 and distilled water consecutively. The leaves were clipped from the spurs to facilitate the work but the spurs were not removed. Moist chambers were sterilized, lined with filter paper, washed out with mercuric chloride solu- tion, rinsed with distilled water, glass covers were prepared in the same manner. The spurs were then removed from each apple in turn and spores of P. expansum from sub-cultures made from the original isolation were planted on the freshly exposed surface at the ends of the apple stems, and the apples placed in the moist chambers. Control apples similarly treated but not inoculated were placed in jars prepared in the same manner and all were kept under the same conditions in the labora- tory. Of the six apples treated in this manner, four developed the characteristic stem end rot and were soon completely decayed. The check apples kept in good condition for three months. Yellow Newtown apples were picked in the same manner at Watsonville, California, and brought to Berkeley. On October 17, 1921, three of the ripest of these apples were treated and inoculated in the same manner as the Bellefleurs. On November 18 the decay of all three apples was identical with the decay ob- served on the fruits naturally infected. Six Yellow Newtown apples were treated in the same manner and inoculated with the same organism several days later than the previous group and they all developed the typical decay. In all eases the checks remained in good con- dition. At the end of six weeks, all the apples so inoculated were entirely decayed and covered’ with green spores. Cultures of the spores appearing on the sur- face of the inoculated apples were made and SCIENCE [Vou. LV, No. 1435 appeared identical in every way with the original culture. Stab inoculations were made with these re-isolated cultures on apples also carefully sterilized. At the same time other apples were inoculated with the original cul- ture. The results were identical, the typical Penicillium decay of apples resulting at every puncture. A penicillium isolated during the fall of 1921 from decaying prunes was found to cause typical decay of apples when inocu- lated into the flesh. This prune penicillium was planted on three Yellow Newtown apple stems and within three weeks it caused typical stem end decay of all three apples. This organ- ism was later found to be identical in all of its reactions with the original penicillium isolated from apples. Washings made from the attached leaves on some of the apples used in the experiments were plated and typical colonies of P. expan- sum appeared on all the plates so made. About 15 per cent. of the colonies which grew were identified as some species of Penicillium, a con- siderable number of which caused typical P. expansum decay when inoculated into mature apples. This would indicate the prevalence of the organism in the trees at the time of harvest. These results prove that stem end infection of apples is a possibility. Observations by the writer indicate that this mode of infection is quite common among the apples of this state, especially in Yellow Newtowns. Though re- tarded in cold storage, the rot makes some progress at a temperature of 45° Fahr. and at room temperature the decay is rapid. CrypE C. Barnum UNIVERSITY OF CALIFORNIA, AMERICAN PHYSIOLOGICAL SOCIETY ’ THIRTY-FOURTH ANNUAL MEETING Tue thirty-fourth annual meeting of the American Physiological Society was held during the Christmas holidays under the patronage of Yale University, New Haven, Connecticut. Two scientific sessions daily were held December 28, 29 and 30. The meetings opened at 9:30, De- cember 28, with a joint session of the societies of the Federation of American Societies for Junez 30, 1922] Experimental Biology, under the chairmanship of J. J. R. Macleod of the physiologists. A vigorous program of reports on the scientific subjects announced below was carried out in the six half-day sessions. The afternoon of December 29 a joint dem- onstration was held in the halls of the Osborne Zoological Laboratory. The demonstrations of the American Association of Anatomists oc- curred at the same time. This brought the two great groups of scientists of the pre-medical sciences together in what proved to be a very pleasing and outstanding demonstration of scientific progress for the year. Three business sessions were carried forward at which the more important steps and deci- sions made were as follows: 1. The report of the treasurer, Dr. Joseph Erlanger, of Washington University School of Medicine, showed a net balance of $467.07. 2. The. annual assessment was placed at one dollar per member. 3. An appropriation of $125 was made in aid of the English journal, Physiological Ab- stracts. 4, The council announced the appointment of J. Hepburn of the University of Toronto to the fellowship established at the last annual meeting under the grant of Dr. W. T. Porter. Dr. Hepburn is pursuing his research in the subject of ‘The Reactions of the Respiration Center to Lack of Oxygen.” This investigation is being carried out in the Laboratory of Physiology, University of Toronto, under the direction of Professor J. J. R. Macleod. 5. The society voted approval of the prin- ciples stated in the Cannon-Henderson resolu- tion, instructing its officers of the executive committee of the federaiton to support the same. 6. The council announced the appointment of Donald R. Hooker of Baltimore as managing editor of the American Journal of Physiology for the year 1922. 7. The council recommended and the society voted the following changes in the rules gov- erning the publication of Physiological Re- views. These changes affect the general man- agement of the journal by reserving to the SCIENCE 709 council the appointment of the chairman of the editorial board, and by transferring the ap- pointment of the managing editor to the edi- torial board. 8. The report of the managing editor of the American Journal of Physiology to the council which was transmitted to the society showed a progressive recovery from the war time deficit in the issue of the successive volumes of the journal. At the present time the cost of pub- lication per volume is only slightly greater than the income for the same. The net balance in the journal fund is $9,659.62. The council announced that in order to over- come the delay in publication a free volume of the journal would be issued immediately, and beginning with the next current volume the size of the journal would be restored to the stand- ard of 600 pages. 9. The first issue of the first volume of Phys- iological Reviews was announced together with the encouraging report that subseriptions had | so far exceeded anticipation that reprinting of the first number had already been accomplished. The following board of editors for Physio- logical Reviews for the year 1922 was reported by the council: William H. Howell, Baltimore, chairman; J. J. R. Macleod, Toronto; D. R. Hooker, Balti- more; Reid Hunt, Boston; Frederic 8S. Lee, New York; L. B. Mendel, New Haven; H. Gideon Wells, Chicago. 10. The following officers of the society were elected at the business meeting on December 29: J. J. R. Macleod, University of Toronto, presi- dent; C. W. Greene, University of Missouri, sec- retary; Joseph Erlanger, Washington University, treasurer; J. A. E. Hyster, University of Wis- consin, member of the council for the years 1922-25 22-25. 11. The following scientists were elected to membership during the session: Edward Frederick Adolph, A.B., PhD., instrue- tor in general physiology, University of Pitts- burgh. James Perey Baumberger, B.S., M.S., Se.D., instructor in physiology, Leland Stanford Junior University. Henry Cuthbert Bazett, M.A., M.D., F.R.C.S. (Eng.), professor of physiology, University of Pennsylvania. 710 G. E. Burget, B.S., Ph.D., professor of physi- ology, University of Oregon. Mary Elizabeth Collett, A.B., A.M., Ph.D., instructor in physiology, University of Buffalo. Helen Copeland Coombs, A.B., Ph.D., instructor in physiology, Columbia University. D. J. Edwards, Ph.D., assistant professor of physiology, Cornell Medical College. Carl Hartley Greene, A.B., Ph.D., M.D., as- sistant in medicine, Mayo Foundation. Carl G. Hartman, A.B., A.M., Ph.D., professor of zoology, University of Texas. Henry F. Helmholz, A.B., M.D., professor of pediatrics, Mayo Foundation. Paul Dudley Lamson, A.B., M.D., associate pro- fessor of pharmacology, Johns Hopkins Univer- sity. Carl H. Lenhart, Ph.B., M.D., associate in sur- gery, Western Reserve University. Clarence A. Mills, A.B., Ph.D., instructor in bio-chemistry, University of Cincinnati. Stuart Mudd, B.S., A.M., M.D., fellow in med- ical research, Harvard Medical School. Harry Sidney Newcomer, A.B., A.M., M.D., research assistant, Henry Phipps Institute. Leonard B. Nice, Ph.D., professor of ology, University of Oklahoma. Stanley P. Reimann, M.D., assistant in experi- mental pathology, University of Pennsylvania. Mrs. Mary Davis Schwartz Rose, A.B., Ph.D., associate professor of nutrition, Teachers College, Columbia University. Clarence A. Smith, B.S., M.S., Ph.D., associate in physiological chemistry, Jefferson Medical College. Joseph Treloar Wearn, B.S., M.D., instructor in pharmacology, University of Pennsylvania. Russell M. Wilder, B.S., Ph.D., M.D., assistant professor of medicine, Mayo Foundation. At the close of the last general session the appreciation of the society for the material facilities and social arrangements of the local committee was expressed in the following reso- lution: The American Physiological Society wishes to express its sincere thanks to the Yale University and to the loeal committee for the splendid facili- ties offered for the scientific meetings, and for the cordial hospitality extended to members attending the meetings. physi- SCIENTIFIC SESSIONS The scientific sessions of the annual meeting were of high merit throughout. Perhaps the SCIENCE [Vou. LV, No. 1435 most profitable feature of the meeting was the vigorous discussion which characterized a large majority of the subjects presented. Too many themes were introduced for the time available, thus crowding the program. It was evident that more restriction would have to be used if representative reports of the activities of Amer- ican physiologists are to be discussed within the limit of a three days session. The entire list of titles reported at the meeting or announced in the printed program is as follows: The effect of thyroidectomy on heat production following injury to the suprarenal cortex in rab- bits: David Marine and Emil J. Baumann. Metabolism studies with enemata of dextrose and levulose: Thorne M. Carpenter. Reasons for believing that respiratory X is not Ch: Yandell Henderson. i Does the partial pressure of oxygen in arterial blood during progresswe anozemia support the secretary theory? C. W. Green and Carl H. Greene. Determination of the acid base balance of the blood: Donald D. VanSlyke. The acid base equilibrium in the blood after parathyroidectomy: D. Dwight Wilson and ©. L. Krantz. Carbon dioxide as an inhibitent of cell growth: G. H. A. Clowes and Homer W. Smith. Injury, recovery and death. Lantern: W. J. V. Osterhout. Blective localization of bacteria following vari- ous methods of inoculation and the production of nephritis by devitalization and infection of teeth in dogs: HB. C. Rosenow and J. G. Meisser. A new factor in drug analgesia: H. G. Barbour and D. 8S. Lewis. On the physiological cause of evolution: Albert P. Mathews. Integumentary changes in the sheep following thyroidectomy and administration of thyroxzin: Sutherland Simpson. The blood-jlow and oxygen metabolism of the thyroid gland: F. P. Knowlton, M. 8. Dooley and A. N. Curtiss. Results on an enlarged thyroid gland nine years after obstructing the veins: C. C. Guthrie. The after effects of prolonged fasting on the basal metabolic rate (man, dog): Margaret M. Kunde. Studies on the relation between nutrition and ovulation: an invariable and characteristic dis- turbance of the estrous cycle of the rat as a result JUNE 30, 1922] of fat vitamine. A deficiency which may never- theless give normal growth: Herbert N. Evans and Katherine Scott Bishop. The oxygen capacity of bird’s blood: Theodore Kruse. The reflex control of the lower esophagus and cardia: A. J. Carlson, J. F. Pearey and H. T. Boyd. A comparison of the respiratory and circulatory effects of anoxemia and carbon dioxide: E. C. Schneider. i Effects of carbon dioxide on protoplasmic vis- cosity: M. H. Jacobs. Water intoxication: L. G. Rowntree. Blood volume changes in dogs following water deprivation: N. M. Keith. Some factors modifying the ejection and filling curves of the ventricles under different circulatory conditions: C. J. Wiggers and L. N. Katz. Physiological aspects of experiments on mitral regurgitation: H. Feil and C. J. Wiggers. The thermocardiogram, and the relation of its waves to the events of muscle contractions: C. D. Snyder. The specificity of gastrin and secretin: A. B. Luckhardt, S. C. Heine and W. L. Palmer. The penetration of dyes into living cells: Marian Irwin and W. J. V. Osterhaut. Electrical conductivity of animal tissues wnder normal and pathological conditions: George W. Crile, Helen H. Hosmer and Amy F. Rowland. The relation of the ammonia content of the blood in Eck’s-fistula dogs to meat poisoning: S. A. Matthews. The hepatic factor in choloroform and phos- phorus poisoning: C. 8. Williamson. The excretion of water, chlorides and urea by the human kidneys: E. F. Adolph. The Glomerular circulation in the frog’s kidney: A. N. Richards and Carl F. Schmidt. Observations on the composition of glomerular urine: Joseph T. Wearn. The inhibition of erection by decerebration: EH. G. Martin and M. L. Tainter. Changes in osmotic pressure in crabs during the moli-cycle: J. M. D. Olmsted and J. P. Baum- berger. The relative stimulating effect of light of dif- ferent wave-lengths in an equal energy spectrum: Henry Laurens. An experimental criticism of the pignet formula for physical efficiency: E. G. Martin, H. S. Wells and A. H. Beede. The relation of the adrenals to fatigue: F. A. Hartman, SCIENCE 71 The calorigenic action of adrenalin in dogs: W. M. Boothby and I. Sandiford. Hibernation: John Tait. The effect of cocaine on growth of lwpinus alba: a contribution to comparative pharmacology of animal and plant tissues: David I. Macht and Marguerite Livingston. The production of co, by the smooth muscle of sea-anemones: G. H. Parker. The role of the sodium ions in the contraction of the isolated duodenal segment of the albino rat by sodium carbonate: F. S. Hammett and J. E. Nowrey, Jr. The central heat regulating mechanism: H. G. Barbour and E. Tolstoi. Physical fatigue and susceptibility—an experi- mental study: Reynold A. Spaeth and Ella Hut- zler Oppenheimer. The effect of some salts on the growth and ex- perimental amebocyte tissue near the iso-electric point and after addition of acid and alkali: Leo Loeb and K. ©. Blanchard. On the increased weight of spermatazoa in egg- secretion: O. C. Glaser. The effects of Roentgen rays upon glandular activity. I. The submazillary gland: A. C. Ivy, B. H. Orndoff and A. Jacoby. The applicability of the gasometer method for the determination of the heat production in dogs with and without urethane: W. M. Boothby and F. C. Mann. Relation between number of hours of sleep and muscular efficiency: Lillian M. Moore, Lu Marie Jenkins and J. Lucile Barker. Variations in muscular efficiency in women: Lillian M. Moore and J. Lucile Barker. The regulation of respiration: F. H. Scott, C. C. Gault and R. Kennedy. The effect of pulmonary congestion in lung ventilation: Cecil K. Drinker, Francis W. Pea- body and Hermann L. Blumgart. Voluntary stimulation of the thoracic auto- nomic nervous system: N. B. Taylor. Some relations of vagus and spinal afferent nerves im respiratory control: F. H. Pike and Helen C. Coombs. Observations on cerebellar stimulations: F. R. Miller. The possibility of the application to physiology of an inertialess method of observing currents of short duration: H. 8. Gasser and J. Erlanger. The electrical resistance and reactance of sus- pended unicellular organisms: S. C. Brooks. Pseudo-paradoxical pupil-dilatation following afferent path lesions: Joseph Byrne. 712 The catalase content of normal and atrophied muscles: A. E. Guenther and S. Morgulis. The mode of action of physical work, cold weather and cold baths in increasing the oxidative processes: W. E. Burge. An experimental study on the significance of fertilization in spathidium spathula: L. L. Wood- ruff and Hope Spencer. The relative alcohol, content of blood and urine: W. R. Miles. What are viscera? C. Judson Herrick. A further study of the effect of total removal of the liver: F. C. Mann and T. B. Magath. The beneficial influence of certain pancreatic eatracts on pancreatic diabetes: J. J. R. Macleod, F. C. Banting and C. H. Best. A comparison of normal cats and cats deprived of the greater part of the adrenals, with special reference to their reactions to morphine (hyper- thermia, hyperglcemia) and to muscular exercise: G. N. Stewart and J. M. Rogoff. The cardio-accelerator agent produced by he- patic stimulation: W. B. Cannon and F. R. Grif- fith. Latent period in reciprocal innervation: J. M. D. Olmsted and W. P. Warner. Physiological entities in inheritance and evo- lution: Ernest L. Scott. DEMONSTRATIONS A radial transmission sphygmograph with rigid support: C. J. Wiggers and W. R. Baker. A model demonstrating the dynamics of mitral regurgitation: C. J. Wiggers and H. Feil. The distribution of the vagus nerves to the sino- auricular junction of the mammalian heart, pho- tographs and tracings: G. Bachman. The glomerular circulation in the frog’s kidney: A. N. Richards and Carl F. Schmidt. NH, production in the nerve during passage of the nerve impulse: Shiro Tashiro. A simple method of demonstrating glomerular and tubule secreting functions: EH. G. Martin and G. D. Shafer. A new type of recording spirometer: R. Burton- Opitz. Liver, spleen and bone-marrow of rats treated with germanius dioxide: F. S. Hammett and J. E. Nowrey, Jr. A two-wedge colorimeter for the comparison of solutions containing two colors, as in the colori- metric determination of the hydrion concentration: Victor C. Myers. Some new apparatus: D. E. Jackson and J. V. Lawrence. SCIENCE [Vou. LV, No. 1435 The effects of parathyroidectomy on the incisors of the albino rat: F. S. Hammett. PAPERS READ BY TITLE Vascular reaction to epinephrin in perfusates of various Ch. II. The portal systems of the terra- pin: C. D. Snyder and Louis E. Martin. Source of the water of hemodilution evoked by hot environments: H. G. Barbour, W. J. Craig and EH. C. Wakeman. A study of blood platelets: Theo. Kruse. A study of alimentary glycemia curves in rab- bits: Ernest L. Scott and T. H. Ford. The contour of the pressure variations in the portal vein: D. D. Forward and H. Feil. A study of fibrinogen following removal of the the liver: C. S. Williamson, F. J. Heck and F. C. Mann. A comparison of the different methods of abla- tion of the liver: F. C. Mann and T. B. Magath. The production of chronic liver insufficiency: F. C. Mann and T. B. Magath. The effect of total removal of the liver in some lower vertebrates: T. B. Magath and F. C. Mann. Smooth muscle responses when subjected to ‘alcohols: F. M. Baldwin and B. M. Harrison. Pulse rate and blood pressure responses of men to passive postural changes. II. Under low oxy- gen: Max M. Ellis. The effect of prostatectomy on integration of muscular movements in the white rat: D. I. Macht and J. L. Ulrich. The relation of parathyroid tetany to the intes- tinal flora: Lester R. Dragstedt. The influence of a beri-beri diet upon the met- abolic rate of the white rat: Addison Gulick. The réle of the vagi on gastric tonus and mo- tility in the necturus: T. L. Patterson. The hormone of the posterior lobe of the pit- witary gland; its probable nature and its great physiological activity as compared with that of B-iminazolylethylamine: John J. Abel, Charles A. Rouiller and J, S. Vander Lingen. NH, production during muscular contraction: Shiro Tashiro and Olive Pearl Lee. Observations on the relation of endocrine dis- order to early embryonic death in birds: Oscar Riddle and E. R. Rose. The réle of the change in hydrogen-ion concen- tration in the motor activitics of the small intes- tine: Frederick S. Hammett. Phato reaction currents of the optic nerve: W. T. Bovie. Cuas. W. GREENE, Secretary SCIENCE—ADVERTISEMENTS BOOKS ON OIL Published by Wiley Just Out! Day’s HANDBOOK OF THE PETROLEUM INDUSTRY By Davin T. Day, Ph. D., Editor-in-Chief, and a Staff of Sixteen of the Country’s Foremost Experts in the Field of Petroleum. This book is, without a doubt, the most comprehensive treatise on Petroleum ever written, covering every phase of the subject. The scattered facts have been ably collated into a series of chapters presenting modern practice only—both for reference purposes and textbook use. practical, and authoritative. Everything is right up to the minute, In 2 volumes—2070 pages, 6 by 9, profusely illustrated, flexibly bound, $15.00 postpaid. ECONOMICS OF PETROLEUM By Josrrn E. Pocur, Consulting Engineer A book of live interest to everyone in any- way connected with oil. A vast number of helpful facts are presented, and many charts are included, giving at a glance accurate figures and facts dealing with production, costs, etc. 375 pages, 6 by 9, 151 figures, cloth, $6.00. PROSPECTING For OIL AND GAS By L. S. Panyrty, Oil and Gas Geologist Describes the various tools and methods of the present-day scientific oil and gas pros- pector. 249 pages, 6 by 9, 128 figures, cloth, $3.25 postpaid. PRINCIPLES OF OIL AND GAS PRODUCTION By Roswett H. Jounson and L. G: HuntLey A general treatise with reference to Ameri- can conditions. 371 pages, 6 by 9, 148 figures, cloth, $4.50. BUSINESS OF O1L PRODUCTION By Roswett H. Jounson, L. G. Hunt ey, and R. E. Somers, all of the University of Pittsburgh This book describes the principles of com- pany organization, as regards scope, person- nel and methods. Chapters on Federal taxa- tion, and the legal questions involved in leas- ing public and Indian lands in this country, and also the acquiring of oil rights in foreign countries, are included. (In Press. Ready August.) FreELD MAPPING For THE OIL GEOLOGIST By C. A. Warner, Field Geologist A handbook of field methods of value to those geologists who have had little experi- ence with the methods commonly used in examining a territory not yet drilled. 143 pages, 4% by 7, 38 figures, flexible, $2.50. POPULAR OIL GEOLOGY By Victor Zrecier, Consulting Geologist Presents the fundamentals of oil geology in simple language. I7I pages, 5 by 7%, 62 figures, flexible, $3.00. Ask us to send you copies of these books on Free Examination JOHN WILEY & SONS, Inc. 432 Fourth Avenue New York SCIENCE—ADVERTISEMENTS An Outstanding New Publication PETERS’ Applied Chemistry By Fredus N. Peters, Ph.D., Instructor in Chemistry in Central High School, Kansas City, Mo., for twenty-three years; more recently Vice-Principal; Author of “‘Chemistry for Nurses,” etc. 461 pages, 514 x 714, with 72 illustrations. Price, cloth, $3.50. This is an elementary text book for secondary schools and for those who desire an up-to-date work that will meet their everyday needs. Just from the press. In his preface the author says: “Permit me to say that to me it has never seemed necessary for a high school chemistry to present a mere skeleton of the most interesting of sciences when that skeleton may just as easily be clothed with wonderful symmetry and charming beauty. On the contrary, it has always seemed that a text for secondary schools may and ought to be a readable book just as well as one merely surfeited with facts. . . . Such is the attempt of this text, to present the chemical facts of everyday life in a readable form and by so doing make them interesting.” The author's extensive experience as a writer and lecturer on chemistry eminently fits him to prepare a book especially suited to the needs of ele- mentary colleges. Teachers are requested to write us. Table of Contents: 1. A Study of Matter. 21. Sulphur and Compounds. 2. Water and Hydrogen Peroxide. 22. Periodic Classification of Elements. 3. Oxygen and Ozone. 23. The Nitrogen Family. 4. Hydrogen. 24. Compounds of Silicon. 5. The Atmosphere. 25. The Alkali Metals. 6. Gases and Some Gas Laws. 26. Some Leavening Agents. 7. Symbols and Formulas. 27. The Calcium Family. 8. Some Chemical Problems. 28. Hard Waters—Methods of Soften- 9. The Halogens. ing. 10. Acids and Bases. 29. Cleaning and Polishing. 11. Nitrogen and Compounds. 30. The Copper Group. 12. Carbon. 31. The Magnesium Family. 13. Valence. 32. The Aluminum Family. 14. Illuminating and Fuel Gases. 33. The Lead Family. 15. Flame. 34. The Chromium Family. 16. Methods of Lighting. 35. Manganese and Compounds. 17. Some Organic Compounds. 36. The Iron Group. 18. Ethereal Salts, Oils, Fats, Sugars. 37. The Platinum and Palladium Groups. 19. Foods and Their Body Values. 38. Reference Tables and Glossary. 20. Solution and Jonization. C. V. Mosby Co., St. Louis, Mo. (Science) C. V. MOSBY COMPANY, Publishers Publishers of Medical, Dental. Pharmaceuti- cal, Nursing, and Scientific Books. Please send. me a copy of PETERS’ APPLIED CHEMISTRY, for which I -enclose $3.50. | NAME) @2 22. 2 oe tae ee " ORE eso ASE Rete TS | 508 N. Grand Blvd. St. Louis SCIENCE—ADVERTISEMENTS Some New Scientific Books From THE CAMBRIDGE UNIVERSITY PRESS, ENGLAND BASIC SLAGS AND ROCK PHOSPHATES By Gerorce Scotr Roprnson Results of field experiments with rock phosphates and open hearth basic slags con- ducted in Essex, 1915-1920. Ill. $4.50 WEATHER PREDICTIONS By Numerical Precess By Lewis F. RicHarpson Presents a scheme of weather prediction founded upon the different equations and not upon partial recurrence of phenomena in their ensemble. With aan $10.00 THE DYNAMICAL THEORY OF GASES By H. H. Jeans Third Edition A surpassingly clear and _ accurate volume of this branch of physics with an extremely valuable chapter on the Quan- tum Theory. $10.00 TIDES AND TIDAL STREAMS By H. D. Warsurc A manual compiled for seamen explain- ing how the height of the tide may be ac- curately calculated at any port in the world at any moment. Ill. $2.75 PRINCIPLES OF GEOMETRY By H. F. Baxer Simple relations of position, for points, lines and planes, set in an ordered frame- work of deduction comprehensible enough to include subsequent theory. $4.00 SPACE, TIME AND GRAVITATION An outline of the General Relativity Theory (Second Impression) By A. S. Eppincton A non-mathematical interpretation of Einstein’s Theory of Relativity. $5.00 Sold By THE MACMILLAN COMPANY, American Agents 64-66 Fifth Avenue, New York Prairie Avenue and 25th St., Chicago Huntington Chambers, Copley Sq., Boston 609 Mission Street, San Francisco 330 South Harwood Street, Dallas Hurt Building, Atlanta | _—————$———————"! International Review devoted to the History of Science and Civiligation Edited by GEORGE SARTON, D.Sc. Associate of the Carnegie Institution Harvard Library 183, Cambridge, Mass. The chief feature of Isis is a Critical Bib- liography of the History and Philosophy of Science and of the History of Civilization. The three first volumes (1882 pages) con- tain about 5,620 bibliographic notes, 312 re- views and 43 longer papers. Isis is the main center of information on the History and Philosophy of Science, and the organ of the New Humanism. 2 or 3 parts complete a volume within 12 to 18 months. The Ist part (220 p.) of Vol. IV has ap- peared. Each volume costs 50 Belgian francs (about $3) (ed. de luxe, from vol. II on, 100 francs). Publisher: WEISSENBRUCH Bruxelles, Belgium 49 rue du Poincon “TURTOX” CATALOGS include Aquaria Microscope slides, Bird glasses (special for High Charts Schools) Chemicals Microtomes Dissecting outfits Models Earthworms (spe- Museum Prepara- cial) tions Entomological sup- Preserved Material plies for Botany, Em- Glassware bryology and Lantern Slides Zoology Life Histories Insect Mounts Microscopes Skeletons Microscope slides, Syringes, Injecting (General) Vascula and many other items. Items in black type are our own special products. We are Manufacturers and Preparators of Biological Supplies. Catalogues to Cover any or all of the above items will be sent on request. GENERAL BICLOGICAL SUPPLY HOUSE 1177 EAST 55TH STREET, CHICAGO, ILL. Lr SCIENCE—ADVERTISEMENTS | SHARPLES SUPER-CENTRIFUGE MEDICAL LABORATORY MODEL THE TEST IN OUR STOCK FOR IMMEDIATE SHIPMENT OF SERVICE The Sharples Laboratory Super-Centrifuge is an instru- ment for the application of very high centrifugal force to liquids. The machine does not resemble the tube or bottle centrifuge but is continuous in its operation—liquid is passed continuously through the rotating member where it is sub- jected to a force of 41,250 times the force of gravity, and the liquid is then continuously discharged. In this way the volume ’ of liquid that can be handled per hour is limited only by the rate at which a proper centrifugal treatment can be effected. In the M. L. (Medical Laboratory) Model, for Bac- tertological and Serolegical Work, the bowl is provided with one outlet and with one collecting cover and delivery spout. The M. L. Model has been widely used in U. S. Army and other laboratories in the preparation of pneumococcus vaccine and by the large manufacturers of other biological preparations in the separation of various immunitive sera and the collection of bacterial matters, as well as for the clarifica- tion of agar, of gelatine, of broth, and other components of culture media. 3181 3181. Super-Centrifuge, Sharples Medical Laboratory Model, with bowl provided with one outlet and with one collecting cover and delivery spout. With steam or compressed air turbine drive for continuous operation at a maxi- mum speed of 40,000 r.p.m., requiring a steam pressure of 22 lbs. and con- suming 100 lbs. of steam per hour. When operated by compressed air ihe same pressure is required and the consumption is 16 cu. ft. of air per $160.00 NOTE—Where neither steam nor compressed air is available, the centrifuges can be operated with crank for hand drive, by which method an approximate maximum ed of 25,090 r.p.m. is obtainable; or with electric d by which method an approximate maximum speed of 36,000 r.p.m. is available. A motor of 4 h.p., with 1 ed of 1750 r.p.m., and a three-inch pulley is require As the great advantage of the super-centrifuge re- sults from the high speeds obtainable with the turbine drive, we furnish the hand drive and electric motor drive on special order only. POULT A UE eee G Ly eth a I ETL tS al Sg Prices subject to change without notice. ARTHUR H. THOMAS COMPANY WHOLESALE, RETAIL AND EXPORT MERCHANTS LABORATORY APPARATUS AND REAGENTS WEST WASHINGTON SQUARE PHILADELPHIA, U. S. A. CABLE ADDRESS, “BALANCE,” PHILADELPHIA SCIENCE—ADVERTISEMENTS CORNELL UNIVERSITY MEDICAL COLLEGE First Avenue and Twenty-eighth Street NEW YORK CITY For Information Address THE SECRETARY 477 First Avenue NEW YORK, N. Y. ‘Tulane University of Louisiana SCHOOL OF MEDICINE (Established in 1834) ADMISSION: All students entering the Freshman Class will be required to present credits for two years of college work, which must include Chemistry (General and Organic), Physics and Biology, with their laboratories, and at least one year in English and one year in a modern foreign language. COMBINED COURSES: Premedical course of two years is offered in the College of Arts and Sciences, which provides for systematic work leading to the B.S. degree at the end of the second year in the medical course. School of Pharmacy, School of Dentistry and Graduate School of Medicine also. WOMEN ADMITTED TO ALL SCHOOLS OF THE COLLEGE OF MEDICINE For bulletins and all other information, address Tulane College of Medicine 1551 Canal Street New Orleans, La. vii Johns Hopkins University Medical School The Medical School is an Integral Part of the University and is in the Closest Affiliation with the Johns Hopkins Hospital. ADMISSION Candidates for admission must be graduates of approved colleges or scientific schools with at least two years’ in- struction, including laboratory work in chemistry, and one year each in physics and biology, together with evidence of a reading knowledge of French and German. Each class is limited to 75 students, men and women be- ing admitted on the same terms. Except in unusual cir- cumstances, applications for admission will not be consid- ered after July Ist. If vacancies occur, students from other institutions desir- ing advanced standing may be admitted to the second or third year provided they fulfill all of our requirements and present exceptional qualifications. INSTRUCTION The academic year begins the Tuesday nearest October 1 and closes the second Tuesday in June. The course of in- struction occupies four years and especial emphasis is laid upon practical work in the laboratories, in the wards of the Hospital and in the Dispensary. TUITION The charge for tuition is $300 per annum, payable in three installments. There are no extra fees except for rental of microscope, certain expensive supplies, and laboratory breakage. The annual announcement and application blanks may be obtained by addressing the Dean of the Johns Hopkins Medical School Washington and Monument Sts., Baltimore, Md. SUMMER WORK FOR GRADUATES IN MEDICINE Beginning Tuesday, June 6th, and ending Thursday, July 16th, a course in medical diagnosis, including labora- tory exercises in clinical pathology and demonstrations in pathological anatomy, will be offered. The course will be limited to thirty students, fee $100. be made to the Dean’s Office. Applications should YALE UNIVERSITY SCHOOL OF MEDICINE Affiliated with the New Haven Hospital and New Haven Dispensary 110TH SESSION Reorganized on a full-time basis Entrance Requirements: A minimum of three years (or its equivalent) of col- lege including general biology, physics, general and organic chemistry, physical chemistry or laboratory physics, and either French or German. ALL THE GENERAL FACILITIES CF THE UNIVERSITY ARE AVAIL- ABLE TO MEDICAL STUDENTS As the number admitted to each class is limited, applications must be made before July 1. Bean, Yale University School of Medicine NEW HAVEN, CONN. Vill SCLENCE—ADVERTISEMENTS University of Michigan MEDICAL SCHOOL Tue University of Michigan Medical School requires a minimum of two years of col- lege work for admission, the same to in- clude English, chemistry (general, qualita- tive analysis and organic), physics, biology and either French or German. In addition to the above requirements the application must be accompanied by a statement from the proper authority in the school from which the applicant comes recommending him for admission to the Medical School. Applications for admission must be filed on or before July 15, 1922. The next regular session begins September 26, 1922. For announcement and further information, address The Secretary, Medical School Ann Arbor, Michigan Marine Biological Laboratory Woods Hole, Mass. INVESTIGATION Facilities for research in Zoology, Embryology, Physiology, and Botany. Eighty-four private lab- oratories $100 each for not over three months. Thirty tables are 4 available for beginners in re- search who desire to work under the direction of mem- bers of the staff. The fee for such a table is $50.00. INSTRUCTION Courses of laboratory instruction with lectures are offered in In- vertebrate Zoology, Protozoology June 28 to August Embryology, Physiology and 8, 1922 Morphology and Taxonomy of the Algae. Each course re- quires the full time of the stu- dent. Fee, $75. A lecture course on the Philosophical Aspects of Biology and Allied Sciences is also offered. SUPPLY BEPARTMENT Cpen the Entire Entire Year Animals and plants, preserved, living, and in embryonic stages. Preserved material of all types of animals and of Algae, Fungi, Liverworts and Mosses furnished Year for classwork, or for the mu- seum. Living material furnish- st OFy ed in season as ordered. Micro- os <4 scopic slides in Zoology, Botany, SY Histology, Bacteriology. _ Cata- logues of Zoological and Botani- cal material and Microscopic Slides sent on application. State which is desired. For cata- logues and all information re- garding material, address: GEG. M. GRAY, Curator, Woods Hole, Mass. The annual announcement will be sent on application to The Director, Marine Biological La- boratory, Woods Hole, Mass. THE REGISTRAR, Boston, SCHOOL OF MEDICINE Western Reserve University of Cleveland, Ohio @ High Standard of Admission® @ Restricted Classes q Thorough Instruction @ Large Clinical Facilities @ High Standard of Scholarship *Admission confined to students having aca- demic degrees and to Seniors in Absentia. For information, address: 1353 East 9th Street CLEVELAND BOSTON UNIVERSITY SCHOOL OF MEDICINE Founded 1873 Students Limited to Two Hundred ENTRANCE REQUIREMENTS. Two pre-medical college years, includ- ing Chemistry, Physics, Biology, English and one other modern language. CURRICULUM. Broad, liberal, meets all requirements. LABORATORY AND CLINICAL FACILI- TIES. Ample. MEN AND WOMEN ADMITTED ON EQUAL TERMS. Fifth optional year, leading to Master's degree. For information and catalogue, write to EDWARD E. ALLEN, M. D., Registrar, 80 East Concord Street Massachusetts SCIENCE—ADVERTISEMENTS ix Freas Constant Temperature Electric Ovens FREAS OVEN NO. 100 A general purpose drying Oven. It has satis- factorily aided many scientists in their work. It For sale by all dealers. Manufactured by THE THERMO ELECTRIC INSTRUMENT CO., No. 8 Johnson St., Newark, N. J. may help you. ELECTRICAL MEASURING INSTRUMENTS FOR PHYSICISTS AND PHYSICAL CHEMISTS EQUIPMENTS SUITABLE FOR RESEARCH AND INDUSTRIAL LABORATORIES We Solicit Inquiries NORTHRUP CO. 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PRECISION Tuning Forks Twenty-five years of experience In rating our Forks we INSTRUCTOR IN ZOOLOGY Aman with M.A. or Ph.D. degree want- ed as instructor in Zoology in West Vir- Address, Zoology De- partment, Morgantown, West Virginia. ginia University. The Microscope By SIMON H. GAGE of Cornell University 13th Edition, Published December, 1920 In this edition, special emphasis is put upon the Dark-Field Microscope. POSTPAID $3.00. COMSTOCK PUBLISHING CO., Ithaca, N. Y. Advertiser, forming Library, wishes to purchase second-hand books on Botany, Biology, Mycol- ogy, Agriculture, Tech- nology and General Science. State edition and Chemistry, Physics, lowest prices to: Mycologist, Mundakayam, Travancore, India Chemist, M. S. general analytical, organic and nutritional chem- Wide experience in teaching istry desires position. Prefer research or teach- ing. nutrition. Good knowledge of animal and plant Address: ““W,’’ clo Science, 2619 New York City. Grand Central Terminal, x SCIENCE—ADVERTISEMENTS = MN swe purchased Kewanee Fur. LABORATORY FURNITURE niture for our Chemistry and : ts BEG | Physics Laboratory ten years ago, and it is still in very good condition. The tables seem to be of well seasoned lumber and the workmanship is of good order. All of the pieces have stood up well.’ This extract is from a letter from C. C. Schmidt, Superintendent of the University High School of the University of North Dakota. An interesting new Book tells the Kewaunee story. It is free. Address the home office at Kewaunee. CANADIAN SALES DIVISION, SKewwsiiees NEW YORK OFFICE, 615 Yonge Street, fe FURNITURE EXPERTS TORONTO, CANADA ~ LABORATORY _ ERT 70 Fifth Avenue BRANCH OFFICES:— 115 Lincoln St., Kewaunee, Wis. Chicago, Kansas City, San Francisco, Houston, Denver, Minneapolis, Baton Rouge, Columbus, Little Rock, Spokane, Oklahoma City, Jackson, Miss.; Phoneix, Omaha, Albuquerque, Salt Lake City, Greensboro, N. C. LALA A CAT TMT Third Edition AMERICAN MEN OF SCIENCE A BIOGRAPHICAL DIRECTORY EDITED BY J. MCKEEN CATTELL AND DEAN R. BRIMHALL The third edition of the Directory contains about 9,600 sketches as compared with 4,000 in the first edition and 5,500 in the second edition. The work should be in the hands of all those who are directly or indirectly interested in scientific work. (1) Men of science will find it indispensable. It gives not only the names, ad- dresses, scientific records and the like of their fellow workers, but also an invaluable summary of the research work of the country, completed and in progress. (2) Those interested in science, even though they may not be professionally en- gaged in research work, will find much of interest and value to them in the book. (3) Executives in institutions of learning and others brought into relations with scientific men will use the book constantly. (4) Editors of newspapers and periodicals will find it to be one of the works of reference that they will need most frequently. (5) Libraries will find the book to be a necessary addition to their reference shelves. il Price, Ten Dollars, Net, Postage Paid THE SCIENCE PRESS Grand Central Terminal, New York, N. Y. oi SCIENCE—ADVERTISEMENTS xi Serological Water Bath of Precision Electrically heated and temperature controlled serological water baths capable of operating at 37.5 degrees Centigrade or 56 degrees Centigrade, either temperature may be obtained by a simple turn of the indicative snap switch. The Wassermann test and inactivating work may be accomplished in the same bath. An Immersion electric heater which is entirely surrounded by water and extends the full length of the bath is used. The thermostats are the multiple contact type, capable of repeated heating and cooling without changing the adjustment. Should other working temperatures be desired the adjustment screw on the thermostat permits the temperature to be readily changed. Baths may be had from stock in the following sizes: PORCELAIN BATHS 12'4 in. x 6 in. x 5 in. Double temperature, Price____________ $55.00 [2iZyains x67ins)xi>) in.) Singles temperature, |Prices—-——__—_=_2__— 50.00 BRAUN-KNECHT-HEIMANN- CO. Founded 1852 584 Mission Street San Francisco, Calif. LABORATORY SUPPLIES Apparatus Chemicals Scientific Instruments “We know how to pack for export’ Inventors—Manufacturers—Exporters—Distributors Cable Address, ‘‘BRAUNDRUG” Los Angeles House All Codes used. The Braun Corporation xii SCIENCE—ADVERTISEMENTS ““BECBRO” RHEOSTATS FOR EVERY CIRCUIT Tubular, Stone and Carbon Compression Types Send for Bulletin C-10 which shows many types of rheostats made by us. | BECK BROS. 3640-42 N. Second Street Philadelphia, Pa., U.S. A. HIGH VACUUM PUMPS Whenever in lecture-room or laboratory practice, really high vacuum is required, we recommend the Condensation Pump devel- oped by Dr. Irving Langmuir of the General Electric Company—believ- _ ing it to be superior to any other as yet obtainable. The Langmuir Pump operates with surprising rapidity, and there seems to be no practical limit to the degree of exhaustion that can be | produced. Some form of auxiliary pump must be used; and for that purpose we offer a special G.E. two-stage oil-sealed mechanical pump, which | is capable of producing a vacuum of 0.001 mm. when used alone. The picture shows a complete out- fit comprising Langmuir Condensation | Pump, two-stage auxiliary pump and % H.P. motor—all mounted together on | one base. Write for descriptive bulletin S-965° JAMES G. BIDDLE 1211-13 Arch St., Philadelphia "1683 ec eee ooo ll | MITHSONIAN INSTITUTION LIBRARIES s Croewsaena bctrete peopaete tenet pere tears ortewcearen vasnes) trkek Sueno rata Ro