Cornell University Library OF THE Hew Work State College of Agriculture s) Cornet un Cornell University The original of this book is in the Cornell University Library. There are no known copyright restrictions in the United States on the use of the text. http://www.archive.org/details/cu31924000621247 A RECORD OF THE DOCTORS IN BOTANY OF THE UNIVERSITY OF CHICAGO 1897-1916 PRESENTED TO JOHN MERLE COULTER PROFESSOR AND HEAD OF THE DEPARTMENT OF BOTANY BY THE DOCTORS IN BOTANY AT THE QUARTER-CENTENNIAL OF THE UNIVERSITY JUNE, 1916 CHICAGO [REPRINTED FROM THE SINGLE PRESENTATION COPY] This book is presented to --- THE LIBRARY OF THE NEW YORK STATE COLLEGE By the Ghicago Doctors in Botany. Burton E. Livingston, 2753 Maryland Ave., Baltimore, Md. Wu 7 Noid “A Rent RON i N unm SMT THE EDITION OF THIS BOOK IS LIMITED TO A SINGLE PRESENTATION COPY PRINTED ON TUSCAN PAPER, AND TO A NUMBER OF UNBOUND REPRINTS ON ORDINARY BOOK-PAPER. A RECORD OF THE DOCTORS IN BOTANY OF THE UNIVERSITY OF CHICAGO 1897-1916 PRESENTED TO JOHN MERLE COULTER. PROFESSOR AND HEAD OF THE DEPARTMENT OF BOTANY BY THE DOCTORS IN BOTANY AT THE QUARTER-CENTENNIAL OF THE UNIVERSITY JUNE, 1916 CHICAGO (REPRINTED FROM THE SINGLE PRESENTATION COPY] At, B3SS TO PROFESSOR JOHN MERLE COULTER The achievements of the Department of Botany of the University of Chicago are your achievements; they had their origin in your consciousness and have attained reality under your far-seeing guidance. We, the Doctors in Botany, prize the honor of being a living part of these achievements, for your ideas and ideals find themselves reflected in us and in our work. Our interest and faith in a progressive science have been aroused and encouraged by your enthusiasm for the advance of scientific knowledge, and we venture to hope that the paths followed by our individual strivings, toward research, toward the spread of knowledge, and toward well-ordered human life, may be increasingly worthy of being regarded as extensions of the paths—already familiar to you—that have led to us and to the other products of your Department. Following your lead, we take it as our part to press forward in the advance of scientific thought, and to bring whatever of intelligence and power may lie in us to bear upon progressive readjustment, both in things botanical and in such other fields as opportunity may present. Especially have you led us to recognize the paramount }mportance of mutual respect, sympathy and true codperation among intellectual workers, and the need for toleration in the disagreements that arise from the incomplete- ness of human knowledge and from our inadequate appreciation of the complex of things about us. We have desired to express to you the high esteem in which we hold you and your work, and this Quarter-Centennial of the University has seemed to us to offer a fitting occasion for the gratification of this desire. We have therefore tried to symbolize our great regard for you and our appreciation of what you have done for us, in the form of this volume, which we wish to present to you as a token of these things. Here is an incomplete record of your own work and a record representing each one of the Chicago Doctors in Botany. We hope you will look upon these sheets as our individual expressions of esteem and regard, and we also hope that they may bring you some pleasure in the thought that the aims that have led you in the upbuilding of this Depart- ment of Botany are being carried out still further, at many places and in many direc- tions, in the activities of eighty-one different persons. We place the book in your hands with the wish that your work may continue for many pleasant-and profitable years, and that your Department may add many more members to our group of Tue Doctors IN Botany OF THE UNIVERSITY OF CHICAGO Chicago, June the Fifth, Nineteen Hundred and Sirteen. JOHN MERLE COULTER A.B., Hanover College, Hanover, Indiana, 1870; A.M., 1873; Ph.D., Hanover College and Indiana University, Bloomington, Indiana, 1882 PROFESSOR AND HEAD OF THE DEPARTMENT OF BOTANY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Botanist, Hayden Survey of the Territories, 1872-74; Professor of Natural Science, Hanover College, Hanover, Indiana, 1874-79; Professor of Biology, Wabash College, Crawfordsville, Indiana, 1879-91; President, and Professor of Botany, Indiana University, 1891-93 ; President, Lake Forest University, Lake Forest, Illinois, 1893-96; Professor and Head of the Department of Botany, The University of Chicago, 1896—. Member: Amer. Acad. Arts and Sci. (Associate Fellow), Amer. Assoc. Adv. Sci. (Fellow; Vice-President, 1891), Amer. Soc. Nat., Bot. Soc. Amer. (President, 1897, 1915), Bot. Soc. Edinburgh (Corresponding Fellow), Botanists Cent. States, Chicago Acad. Sci. (President, 1915), Illinois Acad. Sci. (Presi- dent, 1910), Indiana Acad. Sci. (President, 1886), Linn. Soc. London (Foreign Member), National Acad. Sci., Washington Acad. Sci. Founder of the Botanical Gazette, 1875; Editor of the same, 1875—. Coultereila, a genus of Compositae, named in honor of John Merle Coulter. Vasey, G. R., and Rose, J. N., Contrib. U. 8. National Herb. 1:71. 1890. Couiterovhytum, a genus of Umbelliferae, named in honor of John Merle Coulter. Robinson, B. L., Proc. Amer. Acad. Arts and Sci. 27: 168. 1892. iv JOHN MERLE COULTER PUBLICATIONS Booxs ar the botany of the Rocky mountain region. 8vo., 452 pp. New York, An analytical key to some of the common wild and cultivated species of flowering plants. Svo., 93 pp. New York, 1900. Plant relations. S8vo., vii + 266 pp., 214 figs. New York, 1901. Plant structures. 8vo., vii + 348 pp., 289 figs. New York, 1904. Plant studies. 8vo., vii + 392 pp., 336 figs. New York, 1904. A text-book of botany. 8vo., vii + 365 pp., 320 figs. New York, 1906. New manual of Rocky mountain botany. 8vo., 646 pp. New York, 1909. Elementary studies in botany. 8vo., vii + 461 pp., 97 figs. New York, 1913. Fundamentals of plant-breeding. 8vo., xiv + 347 pp., 109 figs. New York, 1914. The evolution of sex in plants. 8vo., ix + 140 pp., 46 figs. Chicago, 1914. Evolution, heredity, and eugenics. School Science Series, No. 5. 16 mo., iv + 183 pp. Bloomington, Il., 1916. Books IN COLLABORATION Synopsis of the flora of Colorado. (Thomas C. Porter and John M. Coulter.) U.S. Geol. Survey, Miscel. Pub. no. 4, 180 pp. Washington, 1874. Morphology of spermatophytes. (John M. Coulter and C. J. Chamberlain.) 987o., 188 pp., 105 figs. New York, 1901. Morphology of angiosperms. (John M. Coulter and C. J. Chamberlain.) 8vo., 348 pp., 113 figs. New York, 1903. New manual of Rocky mountain botany. (John M. Coulter and Aven Nelson.) 8vo., 648 pp. New York, 1909. Morphology of gymnosperms. (John M. Coulter and C. J. Chamberlain.) 8vo., 458 pp., 462 figs. Chicago, 1910. Text-book of botany, Vol. I. Morphology and physiology. (John M. Coulter, C. R. Barnes and H. C. Cowles.) 8vo., viii + 484 pp., 699 figs. New York, 1910. Heredity and eugenics. (W. E. Castle, John M. Coulter, C. B. Davenport, E. M. East, and W. L. Tower.) 8vo., vii + 315 pp., 98 figs. Chicago, 1912. MISscELLANEOUS PUBLICATIONS Catalogue of the phaenogamous and vascular cryptogamous plants of Indiana. (By Editors of Botanical Gazette and C. R. Barnes.) iii + 38 pp. 1 map. Craw- fordsville, Ind., 1881. Development of a dandelion flower. Amer. Nat. 17: 1211-1217. 1883. Revision of North American Hypericaceae. I. Bot. Gaz. 11: 78-112. 1886. Synopsis of North American pines, based upon leaf anatomy. Iand II. (With J. N. Rose.) Ibid. 11: 256-309; pl. 8. 1886. Development of the umbellifer fruit. bid. 12: 237-2438; pl. 14. 1887. Notes on the Umbelliferae of the eastern United States. I-VII]. (With J. N. Rose.) Ibid. 12: 12-15, 60-63, 73-76, 102-104, 134-138, 157-160, 261-264, 291-295; pls. 1-17. 1887. Notes on western Umbelliferae. T-III. (With J. N. Rose.) Ibid. 13: 77-81, 141-146, 208-211. 1888. JOHN MERLE COULTER Revision of North American Umbelliferae. (With J.N. Rose.) 144 pp. 9 pls. Craw- fordsville, Ind., 1888. Evolution of the plant kingdom. Proc. Indiana Acad. Sci. 1887: 322-335. 1888. Botany of western Texas. Contrib. U.S. National Herb. 2: 1-588. 1891-94. Preliminary revision of the North American species of Cactus, Anhalonium, and Lopho- phora. Ibid. 3: 91-132. 1894. Preliminary revision of the North American species of Echinocactus, Cereus, and Opun- tia. Ibid. 3: 355-462. 1896. A synopsis of Mexican and Central American Umbelliferae. (With J. N. Rose.) Proc. Wash. Acad. Sci. 1: 111-159; pls. 3-13, figs. 1-8. 1900. Monograph of North American Umbelliferae. (With J. N. Rose.) Contrib. U. 8. National Herb. 7: 9-256; pls. 1-9, figs. 1-65. 1900. The phylogeny of angiosperms. Decennial Pub. Univ. Chicago, Series I. 10: 191- 194. Chicago, 1903. The embryogeny of Zamia. (With C. J. Chamberlain.) Bot. Gaz. 35: 184-194. 1903. Regeneration in Zamia. (With M.A. Chrysler.) Ibid. 38: 452-458. 1904. Botany as a factor in education. School Rev. 12: 609-617. 1904. The contribution of Germany to higher education. University of Chicago Record 8: 348-352. 1904. Development of morphological conceptions. Science N. 8. 20: 617-624. 1904. The influence of a teacher’s research work upon his teaching of biology in secondary schools. Science and Math. 5: 94-103. 1905. Gametophytes and embryo of Torreya taxifolia. (With W. J.G. Land.) Bot. Gaz. 39: 161-178. 1905. Principles of nature study. Nature-Study Rev. 1: 57-60. 1905. Public interest in research. Pop. Sci. Monthly 67: 306-312. 1905. Charles Darwin. Chautauquan 45: 66-74. 1906. The scientific spirit. Educational Bimonthly 1: 293-299. 1907. Recent advances in the study of vascular anatomy. Amer. Nat. 43: 219-230. 1907. Relation of megaspores to embryo sacs in angiosperms. Bot. Gaz. 45: 361-366. 1908. Embryo sac and embryo of Gnetum gnemon. Ibid. 46: 43-49. 1908. Some problems in education. Normal Education 23: 1-16. 1908. What the university expects of the high school. School Rev. 17: 73-84. 1909. Evolutionary tendencies among gymnosperms. Bot. Gaz. 48: 81-97. 1909. North American Umbelliferae. (With J. N. Rose.) U.S. National Herb. 21: 441-451. 1909. The theory of natural selection from the standpoint of botany. (In: Fifty years of Darwinism, Memorial Volume; pp. 57-71.) New York, 1909. Charles Reid Barnes. Univ. Chicago Mag. 2: 148-149. 1910. Charles Reid Barnes. Bot. Gaz. 49: 321-324. 1910. Practical Science. Univ. Chicago Mag. 2: 189-200. 1910. Practical Science. Science N. 8. 31: 881-889. 1910. Melchior Treub. Bot. Gaz. 51: 141-142. 1911. An American Lepidostrobus. (With W. J.G. Land.) Ibid. 51: 449-453. 1911. The endosperm of angiosperms. Ibid. 52: 380-385. 1911. History of gymnosperms. Pop. Sci. Monthly 80: 197-203. 1912. Problems of plant breeding. Trans. Illinois Acad. Sci. 4: 28-39. 1912. Morphology and paleobotany. Amer. Year Book 1912: 671-673. 1913. The religion of a scientist. Biblical World 41: 80-85. 1913. What biology has contributed to religion. bd. 41: 219-223. 1913. Increasing plant population. Breeder’s Gaz. 64: 823-824. 1913. vi JOHN MERLE COULTER The origin of monocotyledony. (With W. J.G. Land.) Bot. Gaz. 57: 509-519. 1914, Regeneration in plants. Biblical World 43: 377-381. 1914. Jesus’ attitude toward a new religious movement. Homiletic Rev. 67: 175-177. 1914. Jesus’ attitude toward the organized church. Ibid. 67: 360-362. 1914. Botanical articles in New International Encyclopedia. New York, 1914. Origin of monocotyledony. II. Missouri Bot. Gard., Anniversary Volume 2: 175- 183. 1915. The mission of science in education. School Rev.. 23: 1-8. 1915. The attitude of Jesus toward religion. Homiletic Rev. 70: 183-185. 1915. A suggested explanation of “‘orthogenesis” in plants. Science N. 8. 42: 859-863. 1915. vil CHARLES JOSEPH CHAMBERLAIN A.B., Oberlin College, Oberlin, Ohio, 1888; A.M., 1893; Ph D. (Botany and Animal Physiology), Chicago, April, 1897 PROFESSOR OF BOTANY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Assistant and Associate in Botany, The University of Chicago, 1897-1901; Instructor, 1901-7; Assistant Professor of Plant Morphology and Cytology, 1908-11; Associate Professor of Botany, 1911-15; Professor of Botany, 1915—. Member: Amer. Assoc. Adv. Sci. (Fellow), Assoc. Internat. Bot., Bot. Soc. Amer., Deutsch. Bot. Ges., Natur-forsch. Ges. Univ. Kiew (Honorary), Sigma Xi. American Editor of Plant Cytology for Bot. Centralbl., 1902. PUBLICATIONS Booxs. Methods in plant histology. Chicago, 1901. 2nd Ed., 1905. 3rd Ed., 1915.—Morphology of spermatophytes. (With J. M. Coulter.) New York, 1901.— Morphology of angiosperms. (With J. M. Coulter.) New York, 1903.—Morphology of gymnosperms. (With J. M. Coulter.) New York, 1910. Papers. Theembryo-sac of Aster novae-angliae. Bot. Gaz. 20: 205-212. 1895 —The life history of Salix. Jbid. 23: 147-179. 1897.—The life history of Lilium philadelphicum. II. The pollen grain. Jbid. 23: 423-430. 1897.—Winter characters of certain sporangia. Ibid. 25: 124-128. 1898.—The homology of the blepharoplast. Ibid. 26: 431-435. 1898.—Odgenesis in Pinus laricio. Ibid. 27: 268-389. 1899.— Methods in plant histology. Jour. Applied Microscopy and Lab. Meth.2and3. 1899- 1900.—The embryogeny of Zamia. (With J. M, Coulter.) Bot. Gaz. 35: 184-194. 1903. —Mitosis in Pellia. Jbid. 36: 28-51. 1903.—Alternation of generations in animals from a botanical view-point. Jbid. 39: 137-144. 1905.—The ovule and female gameto- phyte of Dioén edule. Jbid. 42: 321-358. 1906.—Monte Alban and the Mitla as the tourist sees them. Pop. Sci. Monthly 63: 392-402. 1908.—Spermatogenesis in Dioén eaule. Bot. Gaz. 47: 215-236. 1909.—Dio6én spinulosum. Jbid. 48: 401-413. 1909. —Fertilization and embryogeny in Dioén edule. Ibid. 50: 415-429. 1910.—Nuclear phenomena of sexual reproduction in gymnosperms. Amer. Nat. 44: 595-603. 1910.— The adult cycad trunk. Bot. Gaz. 52: 81-106. 1911.—Morphology of Ceratozamia. Tbid. 53: 1-19. 1912.—Eduard Strasburger. Jbzd. 54: 68-72. 1912.—Two species of Bowenia. Ibid. 54:419-423. 1912.—A round the world botanical excursion. Pop. Sci. Monthly 81: 417-423. 1912.—Macrozamia moorei, a connecting link between liv- ing and fossil cycads. Bot. Gaz. 55: 141-154. 1913.—The oriental cycads in the field. Science N. S. 38: 164-167. 1913.—A phylogenetic study of cycads. Proc. National Acad. Sci. 1: 85-90. 1915.—Stangeria paradoxa. Bot. Gaz. 1916, in press. HENRY CHANDLER COWLES A.B., Oberlin College, Oberlin, Ohio, 1893; Ph.D. (Botany and Geology), Chicago, April, 1898 PROFESSOR OF PLANT ECOLOGY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Assistant in Botany, The University of Chicago, 1898-01; Associate, 1901-02; Instructor, pe ee eee Professor of Plant Ecology, 1907-11; Associate Professor, 1911-15; Pro- essor —- Member: Amer. Assoc. Adv. Sci. (Fellow; Vice-President for Botany, 1913), Assoc. aos Geog. (President, 1910), Bot. Soc. Amer., Ecol. Soc. Amer., Gamma Alpha, Sigma i. PUBLICATIONS Outline of lectures on ecology. 6 pp. Milwaukee, 1898.—The ecological relations of the vegetation on the sand dunes of Lake Michigan. Bot. Gaz. 27: 95-117, 167- 202, 281-308, 361-391. 1899. The physiographic ecology of northern Michigan. Science N. 8. 12: 708-709. 1900.—The physiographic ecology of Chicago and vicinity. Bot. Gaz. 31: 73-108, 145-182. 1901.—The plant societies of Chicago and vicinity. 76 pp. Chicago, 1901.—The influence of underlying rocks on the character of the vege- tation. Bull. Amer. Bur. Geog. 2: 1-26. 1901—The work of the year 1903 in ecology. Science N. 8. 19: 879-885. 1904——A remarkable colony of northern plants along the Apalachicola river, Florida, and its significance. Rept. 8th. Internat. Geog. Cong. (1904) p. 599. Importance of the physiographic standpoint in plant geography. Jbid. (1904) p. 600.—An ecological aspect of the conception of species. Amer. Nat. 42: 265-271. 1908.—The response of plants to soil and climate. (In Salisbury’s Physiography for High Schools, pp. 462-473.) New York, 1908.—The trend of ecological philosophy. Amer. Nat. 43: 356-368. 1909.—The fundamental causes of succession among plant associations. Rept. Brit. Assoc. Adv. Sci. 1909: 668-670. 1910——\Charles Reid Barnes. Science N. 8. 31: 532-533. 1910.—A fifteen year study of advancing sand dunes. Rept. Brit. Assoc. Adv. Sci. 1911: 565. 1912.—Causes of vegetative cycles. Bot. Gaz. 51: 161- 183. 1911.—Conservation of our forests. Trans. Ill. Acad. Sci. 5: 48-53. 1912.— A textbook of botany. Vol. II, Ecology. 8vo., x + 480 pp. New York, 1912.—The causes of vegetational cycles. Ann. Assoc. Amer. Geog. 1: 3-20. 1912.—Impressions of the international phytogeographical excursion in the British Isles. New Phytol. 11: 25-26. 1912.—The international phytogeographical excursion in the British Isles. Plant World 15: 46-48. 1912.—The international phytogeographic excursion in Amer- ica. Excursion program. 60 pp. Chicago, ete., 1913.—The economic trend of bot- any. Science N.S. 41: 223-229. 1915.—A spring flora for high schools. (With J. G. Coulter.) 144 pp. New York, 1915. WILLIAM L. BRAY B.A., Indiana University, 1893; Ph.D. (Botany and Zodlogy), Chicago, July, 1898 PROFESSOR OF BOTANY AND HEAD OF THE DEPARTMENT OF BOTANY, SYRACUSE UNIVERSITY, SYRACUSE, NEW YORK Adjunct Professor of Botany, University of Texas, 1897-98; Associate Professor, 1898- 02; Professor, 1902-07; Professor of Botany, Syracuse University, 1907—; Chief, Division of Forestry, Texas World’s Fair Commission, 1903-04; Acting Dean, New York State Col- lege of Forestry, 1911-12. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., Ecol. Soc. Amer. PUBLICATIONS The geographical distribution of the Frankeniaceae considered in connection with their genetic relationships. Jahrb. Syst. Pflanzengeschichte u. Pflanzengeogr. 24: 395-417. 1897.—On the relation of the flora of the lower Sonoran Zone in North America to the flora of the arid zones in Chili and Argentine. Bot. Gaz. 26: 121-147. 1898.—The ecological relations of the vegetation of Western Texas. Jbid. 32: 99- 217, 262-291. 1901.—Destruction of timber by the Galveston storm. The Forester 7: 538-56. 1901.—Texas forests and the problem of forest management for the long- leaf pine lands. Jbtd. 7: 131-138. 1901. The tissues of some plants of the Sotol- Region in Texas. Bull. Torr. Bot. Club 30: 621-633. 1903.—Forest resources of Texas. U.S. Dept. Agric., Bur. Forestry Bull. 47. 1904.—The timber of the Ed- wards Plateau in Texas. Ibid. Bull. 40: 1904.—The vegetation of the Sotol Country. in Texas. Univ. Texas. Bull. 60. 1905.—Distribution and adaptation of the vegeta- tion of Texas. Jbid. Bull. 82. 1906.—The mistletoe pest in the Southwest. U. S. Dept. Agric., Bur. Plant Ind. Bull. 166. 1908.—The development of the vegetation of New York State. N. Y. State Coll. Forestry, Techn. Pub. No. 3. 1915. Oris WILLIAM CALDWELL B.S., Franklin College, Franklin, Indiana, 1894; Ph.D. (Botany and Bacteriology), Chicago, July, 1898 PROFESSOR OF BOTANY, SCHOOL OF EDUCATION, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Assistant in Botany, The University of Chicago, 1898-99; Professor of Botany, Eastern Illinois State Normal School, Charleston, Illinois, 1899-1907; Associate Professor of Botany, The University of Chicago, 1907-15; Professor, 1915—. Dean, University College, The University of Chicago, 1913—. 5G Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Soc. Nat., Bot. Soc. Amer., Sigma Le PUBLICATIONS Booxs. Practical botany. ((With J. Y. Bergen.) 8vo. Boston, 1911.—Intro- duction to botany. (With J. Y. Bergen.) 8vo. Boston, 1914.—Elements of general science. (With W. L. Hikenberry.) 8vo. Boston, 1914.—Laboratory manual of gen- eral science. (With W. L. Hikenberry and C. J. Pieper.) Boston, 1915.—Essentials of agriculture. (With H. J. Waters.) Boston, 1915. Papers. On the life-history of Lemna minor. Bot. Gaz.27: 37-66. 1899.— The identity of Microcycas calocoma. (With C.F. Baker.) Ibid. 43: 330-835. 1907.— Microcycas calocoma. Ibid. 44: 118-141. 1907.—The teaching of botany in the high school. School Rev. 15: 661-670. 1907.—The criteria of selection of material for teaching of nature-study and geography. Nature-Study Rev. 3: 252-259. 1907.— The school garden. Eastern Illinois state Normal School Bull. 20. 1908.—The high- school course in botany. Wisconsin, Office of State Supt. of Public Instruction, Bulle- tin. 1908: 1-8. 1908.—The relation of the doctorate to teaching. Univ. of Chicago Mag. 1:58-64. 1908.—The course in botany. School Sci. and Math. 9: 54-66. 1909. A study of Microcycas calocoma. Estacion Central Agronomica, Cuba, Reports 19091; 122-132. 1909.—An investigation of the teaching of biological subjects in secondary schools. School Sci. and Math. 9: 581-597. 1909.—Natural history in the grades. (Seven papers.) Elem. School Teacher 10-11: 1-50. 1909-10.—General science for the first year of the high school. Proc. Cent. Assoc. Sci. and Math. Teachers 1909: 115-27. 1909—Botany in the schools. Amer. Cyclop. Education 1: 429-483. 1911. —The product of our botanical teaching. Science N. 8. 33: 639-642. 1911.—Should the nature-study course be organized with definiteness? Nature-Study Rev. 6: 187-189. 1910.—Organization in the course in nature-study. Ibid. 7: 87-90. 1911.—The labor- atory method and high-school efficiency. Pop. Sci. Monthly 82: 243-251. 1913.—The Illinois State Academy of Science. Science N.S. 37: 496-498. 1913.—A unified high- school science course. School Sci. and Math. 14: 165-169. 1914.—The course in bot- any. Proc. Illinois High School Conference 1913: 89-92. 1913.—Rural extension. Jour. Home Economics 6: 99-109. 1914.—The unified high-school science course. Proc. Cent. Assoc. Sci. and Math. Teachers 1914: 18-21. 1914.—Investigations re- garding general science. High-School Quarterly 4: 94-101. 1916.—Preparation of the teacher of biology. School Sci. and Math. 16: 385-392. 1916.—The four-year high- school science course. Ibid. 16: 393-399. 1916. WILLIAM DAYTON MERRELL A.B., University of Rochester, Rochester, New York, 1891; Ph.D. (Botany and Zodlogy), Chicago, July, 1898 PROFESSOR OF BOTANY, UNIVERSITY OF ROCHESTER, ROCHESTER, NEW YORK Instructor in Biology, University of Rochester, 1899-1905; Assistant Professor of Biol- ogy, 1905-1914; Professor of Botany, 1914—. Member: Amer. Assoc. Adv. Sci., Amer. Nature-Study Soc., Bot. Soc. Amer., N. Y. Sci. Teachers’ Assoc. (President, 1909), Rochester Acad. Sci. PUBLICATIONS A contribution to the life-history of Silphium. Bot. Gaz. 29: 99-133. 1900.— Advantages of a year’s course in biology (zodlogy, physiology, botany). School Rev. 12: 216-223. 1904. ROBERT WILSON SMITH B.A., McMaster University, Toronto, Canada, 1895; Ph.D. (Botany and Zodlogy), Chicago, April, 1899 PROFESSOR OF BIOLOGY, MCMASTER UNIVERSITY, TORONTO, CANADA Lecturer in Biology, McMaster University, 1899-1900; Professor of Biology, 1900—. Member: Bot. Soc. Amer., Royal Canadian Institute. PUBLICATIONS A contribution to the life-history of the Pontederiaceae. Bot. Gaz. 25: 324-337. 1898.—Structure and development of the sporophylls and sporangia of Isoetes. Ibid. 29: 225-258, 323-346. 1900.—The achromatic spindle in the spore mother cells of Os- munda regalis. Ibid. 30: 361-377. 1900.—The floral development and embryogeny of Eriocaulon septangulare. Ibid. 49 : 281-289. 1910.—The tetranucleate embryo sac of Clintonia. Ibid. 52: 209-217. 1911. NELS L. T. NELSON B.S., Carlton College, Northfield, Minnesota, 1891; Ph.D. (Botany and Animal Histology), Chicago, July, 1899 PROFESSOR OF BOTANY, UNIVERSITY OF FLORIDA, GAINESVILLE, FLORIDA Professor of Natural Science, Defiance College, Defiance, Ohio, 1900-01; Teacher of Botany, Central High School, St. Louis, Missouri, 1901-09; Professor of Biology and Geol- ogy, Des Moines College, Des Moines, Iowa, 1909-12; Professor of Science, Presbyterian College of South Carolina, Clinton, South Carolina, 1912-14; Professor of Botany, Uni- versity of Florida, 1914—. Member: Amer. Assoc. Adv. Sci., Sullivant Moss Soc., Athenaeum Club. DissERTATION: Revision of the North American species of Solanum. JOHN GAYLORD COULTER A.B., Lake Forest University, Lake Forest, Illinois, 1895; Ph.D. (Botany and Geology), Chicago, December, 1900 EDITOR, SCHOOL SCIENCE SERIES, BLOOMINGTON, ILLINOIS _ _Instructor in Botany, Syracuse University, Syracuse, New York, 1899-1901; Botanist, in Educational Department, Government of the Philippine Islands, 1902-06; Professor of Biology, Illinois State Normal University, Normal, Illinois, 1906-10. Member: Amer. Assoc. Adv. Sci., National Educational Assoc., Cent. Assoc. Sci. and Math. Teachers. : PUBLICATIONS Notes on Philippine botany. Manila, 1903.—Nature-Study for the Philippines. New York, 1904.—Practical nature-study. New York, 1908.—Plant life and plant uses. New York, 1913.—Spring flora for high schools. (With H.C. Cowles.) 144 pp. New York, 1915.—Laboratory manual of botany. New York, 1915.—Notes on notebooks. School Sci. and Math. April, 1915.—Biology in high schools. Jbid, April, 1916.—The training of elementary science teachers. School Rev. Jan., 1916.—Status of science instruction in junior-senior high-school organization. Jour. Administ. and Superv. Dec., 1915.—A four-year course in science in the high school. School and Soc. Feb. 13, 1915.—Opportunities in Botany. Science N.8. 27: 873-876. 1908.—Various articles in School and Home Education and in School Science Series. FRANK LINCOLN STEVENS B.L., Hobart College, Geneva, New York, 1891; B.S., Rutgers College, New Brunswick, New Jersey, 1893; M.S., 1897; Ph.D. (Botany and Bacteriology), Chicago, June, 1900 PROFESSOR OF PLANT PATHOLOGY, UNIVERSITY OF ILLINOIS, URBANA, ILLINOIS Traveling Fellow, The University of Chicago (Bonn, Halle, Naples; Smithsonian Institu- tion table at Naples), 1900-01; Instructor in Vegetable Pathology, North Carolina College of Agriculture and Mechanic Arts, West Raleigh, North Carolina, 1901-02; Professor of Botany and Vegetable Pathology, and Pathologist of the North Carolina Agricultural Experiment Station, 1902-12; Dean, Porto Rico College of Agriculture and Mechanic Arts, Mayaguez, Porto Rico, 1912-14; Professor of Plant Pathology, University of Illinois, Urbana, [linois, 1914—. Member: Amér. Assoc. Adv. Sci. (Fellow), Amer. Breeders’ Assoc., Amer. Mycol. Soc., Amer. Nature-Study Soc. (Charter Member and Vice-President), Amer. Phytopath. Soc. (President), Amer. Soc. Bact., Amer. Soc. Nat., Bot. Soc. Amer., Illinois Acad. Sci., North Carolina Acad. Sci. (Fellow and Charter Member, President, 1905), Sigma Xi. Associate Editor, Phytopathology and.Journal of Bacteriology. PUBLICATIONS Booxs. Agriculture for beginners. (With C. W. Burkett and D. H. Hill.) Bos- ton.—Diseases of economic plants. (With J. G. Hall.) 12mo, 532 pp., 213 figs. New York, 1910, 1913, 1915.—The fungi which cause plant disease. 8vo., 754 pp.. 449 figs. New York, 1913.—The Hill readers. (With D. H. Hill and C. W. Burkett.) Boston.—The practical arithmetic. (With T. Butler and A. C. Stevens.) New York. Papers. The effect of aqueous solutions upon the germination of fungus spores. Bot. Gaz. 26: 377-406. 1898.—A peculiar case of spore distribution. Ibid. 27: 138~ 139. 1899.—The compound odsphere of Albugo bliti. Ibid. 28: 149-176, 225-245. 1899.—Die Gametogenese und Befruchtung bei Albugo. Ber. deutsch.. Bot. Ges. 19: 171-176. 1901.—Gametogenesis and fertilization in Albugo. Bot. Gaz. 32: 77-98, 157-169, 238-261. 1901—Some improvements upon apparatus for water analysis. (With W. G. Sackett.) Jour. Applied Microscopy and Lab. Meth. 5: 1918-1919. 1902.—Studies in the fertilization of Phycomycetes, Sclerospora graminicola (Sacc.) Schroet. Bot. Gaz. 34: 420-425. 1902.—Notes on Sclerospora graminicola. Jour. Mycol. 9:13. 1903.—Fungous enemies of the apple, pear, and quince, with methods of treatment. North Carolina Agric. Exp. Sta. Bull. 183: 64-82. 1903—~-Mutation in Bidens and other genera. Bot. Gaz. 35: 363-366. 1903.—Poisoning by Lepiota mor- gani Pk. Jour. Mycol. 9: 220-222. 1903.—Mitosis of the primary nucleus in Synchy- trium decipiens. (With A.C. Stevens.) Bot. Gaz. 35: 405-415. 1903.—Fungous ene- mies of the peach, plum, cherry, fig, and persimmon. North Carolina Agric. Exp. Sta. Bull. 186: 23-46. 1903.—The Granville tobacco wilt. (With W. G. Sackett.) Ibid. 188. 1903.—The history of the tobacco wilt in Granville county, North Carolina. U. S. Dept. Agric., Office Exp. Sta., Bull. 142: 166-168. 1904.—Notes on cooperative ex- periments. Jbzd.142: 164-166. 1904.—Odgenesis and fertilization in Albugo ipomoeae- panduratae. Bot. Gaz. 38: 300-302. 1904.—Report of the Biologist. Ann. Rept. North Carolina Agric. Exp. Sta. 26 (1902-3). 1904.—Nature study and agriculture. Nature-Study Rev. 1: 12-13. 1905.—A nature-study lesson with molds. Ibid. 1: 76- 77. 1905.—Purity of Raleigh’s milk supply. Report submitted to the committee ap- pointed by the Raleigh Board of Aldermen, Raleigh, North Carolina. Pages 1-7. 1905.—Potato blight in central New York. Rural New Yorker 44:470. 1905.—Re- port of the Biologist. Ann. Rept. North Carolina Agric. Exp. Sta. 27 (1903-4). 1905. —Nature-study and agriculture. Nature-Study Rev. 1, No. 4. 1905.—The science of plant pathology. Pop. Sci. Monthly 67: 399-408. 1905. Also, Jour. Mitchel. Soe. 21: 61-75. 1905.,—Course in nature-study for the teacher. (With A. C. Stevens.) 9a FRANK LINCOLN STEVENS Office North Carolina State Supt. Pub. Instr. Teachers’ Bull. 5: 1-32. 1905.—Report of the Biologist. Ann. Rept. North Carolina Agric. Exp Sta. 28 (1904-5). 1906.—A simple experiment on spontaneous generation. Nature-Study Rev. 2:26-29. 1906.— Spraying mixtures and machinery. When and How to Spray. North Carolina Agric. Exp. Sta. Bull. 193: 1-33. 1906.—Market milk, bacteriological data, Centralbl. Bakt. Parasitenk. und Infektionskrankh. II, 20: 114-121. 1907.—Report of the Biologist. Ann. Rept. North Carolina Agric. Exp. Sta. 29 (1905-6). 1907.—List of New York fungi. Jour. Mycol. 13: 67-72. 1907.—Puccinia upon Melothria. Bot. Gaz. 43:282- 283. 1907.—An apple rot due to Volutella. Jour. Mycol. 13: 94-99. 1907.—Some apple diseases. North Carolina Agric. Exp. Sta. Bull. 196:41-56. 1907.—The chrys- anthemum ray blight. Bot. Gaz. 44: 241-258. 1907.—The publication of agricultural research. Science N. 8. 26: 669-670. 1907.—Two interesting apple fungi. Jbid. 26: 724-725. 1907—Some remarkable nuclear structures in Synchytrium. Ann. Mycol. 5: 480-485. 1907.—Report of the Biologist. Ann. Rept. North Carolina Agric. Exp. Sta. 30 (1906-7). 1908.—The spraying of Irish potatoes, A bacterial disease of lettuce, Sclerotia in carrots, The chrysanthemum ray blight, Inoculation with tubercle bacteria (With J.C. Temple), Notes on plant diseases in North Carolina (with J. G. Hall). Ibid. 30 (1906-7). 1908.—A convenient mode of preparing silicate jelly. (With J.C. Temple.) Centralbl. Bakt. Parasitenk, und Infektionskrankh. II, 21: 84-87. 1907.—Concerning the existence of non-nitrifying soils. (With W. A. Withers.) Sci- ence N. S. 29: 506-508. 1908.—Report of the Biologist. Ann. Rept. North Carolina Agric. Exp. Sta. 31 (1907-8). 1909.—Eine neue Feigen-Anthraknose. (With J. G. Hall.) Zeitsch. Pflanzekrankh. 19: 65-68. 1909.—Hypochnose of pomaceous fruits. (With J.G. Hall.) Science N.S. 27: 724. 1907. (Also, Ann. Mycol. 7: 49-59. 1909.)— Studies in soil bacteriology. I. Nitrification in soils and solutions. (With W. A. With-- ers, J. C. Temple and W. A. Syme.) Centralbl. Bakt. Parasitenk. und Infektions- krankh. IT, 23: 355-3893. 1909.—Experiments upon the effect of formalin upon the ger- mination of oats. (With J.C. Temple.) Ann. Rept. North Carolina Agric. Exp. Sta. 31 (1907-8). 1909.—A study of corn mold, Notes on plant diseases occurring in North Carolina. Ibid. 1909.—Studies of soil bacteriology. II. Ammonification in soils and in solutions. (With W. A. Withers, J.C. Temple and W. A. Syme.) Centralbl. Bakt. Parasitenk. und Infektionskrankh. II, 23: 776-785. 1909.—The relation of nature-study and agriculture in the country school. Nature-Study Rev. 5: 98-100. 1909.—Varia- tion of fungi due to environment. (With J. G. Hall.) Bot. Gaz. 48: 1-30. 1909— Carnation alternariose. (With J. G. Hall.) Ibid. 47: 409-413. 1909.—Studies of soil bacteriology. III. Methods of determining nitrifying and ammonifying powers of soils. (With W. A. Withers, J.C. Temple,W. A. Syme, J. K. Plummer, and P. L. Gainey.) Centralbl. Bakt. Parasitenk. und Infektionskrankh. IT, 25: 64-80. 1909.— Studies of soil bacteriology. JV. The inhibition of nitrification by organic matter. (With W. A. Withers, P. L. Gainey, J. K. Plummer and F.W. Sherwood.) Ibid. II, 27: 169-184. 1910.—Prevention of oat and wheat smut. North Carolina Agric. Exp. Sta. Bull. 212. 1910.—Insect and fungous diseases of apple and pear. (With F. Sherman.) Ibid. Bull. 206. 1910.—Lettuce sclerotinose. Science N. 8.31: 752. 1910—Three in- teresting species of Claviceps. Bot. Gaz. 50: 460-463. 1910.—Report of the Biologist, Report of the Bacteriologist. Ann. Rept. North Carolina Agric. Exp. Sta. 32 (1908-9). 1910.—Notes on plant diseases in North Carolina. (With J. G. Hall.) Ibid. 33 (1909-10). 1911.—A serious lettuce disease and a method of control. North Carolina Agric. Exp. Sta. Tech. Bull. 8. 1911.—Progress in control of plant diseases. Pop. Sci. Monthly 78: 469-476. 1911.—A serious lettuce disease. North Carolina Agric. Exp. Sta. Bull. 217. 1911.—Report of Bacteriologist. Ann. Rept. North Carolina Agric. Expt. Sta. 33 (1909-10). 1911.—Studies of soil bacteriology. V. The nitri- 9b FRANK LINCOLN STEVENS fying and ammonifying power of North Carolina soils. (With W. A. Withers, P. J. Gainey and T. B. Stancel.) Centralbl. Bakt. Parasitenk. und Infektionskrankh. II, 34: 187-203. 1912.—Nitrates in soils. Science N. 8. 35: 996-1000. 1912.—The ef- ficiency of pure culture inoculation for legumes. -(With J.C. Temple.) Ibid. 34 (1910- 11). 1912.—Okra wilt (fusariose), Fusarium vosinfectum, and clover rhizoctinose. (With G. W. Wilson.) Ibid. 1912.—Studies in soil bacteriology. VI. Miscellaneous nitrification experiments. (With W. A. Withers, P. L. Gainey, J. K. Plummer, F. W. Sherwood, T. B. Stancel and C. E. Bell.) Ibid. 35 (1911-12). 1913.—Some problems of plant pathology in reference to transportation. Phytopathol. 5:108-110. 1915.— Three strawberry fungi which cause fruit rots. Science, N. 8. 41: 912-913. 1915. 9c JAMES BERTRAM OVERTON Ph.B., University of Michigan, 1894; Ph.D. (Botany and Zodlogy), Chicago, June, 1901 PROFESSOR OF PLANT PHYSIOLOGY, UNIVERSITY OF WISCONSIN, MADISON, WISCONSIN Professor of Biology, Illinois College, Jacksonville, Illinois, 1901-03; Research As- sistant, Carnegie Institution of Washington (Bonn, Germany), 1903-04; Instructor in Botany, University of Wisconsin, 1904-07; Assistant Professor, 1907-12; Associate Pro- fessor of Plant Physiology, 1912-15; Professor, 1915—. Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Soc. Nat., Assoc. Internat. Bot., Bot. Soc. Amer., Botanists Cent. States, Deutsch. Bot. Ges., Ecol. Soc. Amer., Wisconsin Acad. Let. Sci. Arts, Sigma Xi, Amer. Assoc. Univ. Professors, Chaos Club (Chicago, IIl.), Univ. Club (Madison, Wis.). PUBLICATIONS Parthenogenisis in Thalictrum purpurascens. Bot. Gaz. 33: 363-375. 1902.— Ueber Parthenogenesis bei Thalictrum purpurascens. Ber. Deutsch. Bot. Ges. 22: 274-283. 1904.—Ueber Reduktionsteilung in den Pollenmutterzellen einiger Dykoty- len. Jahrb. wiss. Bot. 42: 121-153. 1906.—The morphology of the ascocarp and spore- formation in the many-spored asci of Thecotheus pelletieri. Bot. Gaz. 42: 450-492. 1906.—The organization of nuclei in pollen mother cells. Ann. Bot. 23: 19-61. 1909. —Organization and reconstruction of nuclei of Podophyllum. Proc. Brit. Assoc. Adv. Sci. 1909: 678-679. 1910.—Studies on the relation of living cells to transpiration and sap-flow. Bot. Gaz. 51: 28-63, 102-120. 1911.—Artificial parthenogenesis in Fucus. Science N. 8. 37: 841-844. 1913. ‘ 10 ANSTRUTHER ABERCROMBIE LAWSON Ph.D. (Botany and Bacteriology), Chicago, August, 1901 PROFESSOR OF BOTANY, UNIVERSITY OF SIDNEY, SIDNEY, AUSTRALIA Assistant Professor of Botany, Leland Stanford Junior University, Stanford Univer- sity, California 19— —19—; Lecturer in Botany, University of Glasgow, Glasgow, Scotland 19— —19—; Professor of Botany, University of Sidney, Sidney, Australia. Fellow: Linnean Soc., Roy. Soc. Edinburgh. PUBLICATIONS Some observations on the development of the karyokinetic spindle in the pollen- mother-cells of Cobaea scandens Cav. Proc. Calif. Acad. Sci. Bot. III, 1: 169-188. 1898. —Origin of the cones of the multipolar spindle in Gladiolus. Bot. Gaz. 30: 145-153. 1900. On the relationship of the nuclear membrane to the protoplast. Ibzd. 35: 305- 319. 1903.—Studies in spindle formation. Jbid. 36: 81-100. 1903.—The gameto- phytes, archegonia, fertilization and embryo of Sequoia sempervirens. Ann. Bot. 18: 1-28. 1904.—The gametophytes, fertilization and embryo of Cryptomeria japonica. Ibid. 18: 417-444. 1904.—The gametophytes, fertilization and embryo of Cephalotaxus drupacea. Ibid. 21: 1-23. 1907—The gametophytes and embryo of the Cupressineae with special reference to Libocedrus decurrens. Ibid. 21: 281-301. 1907.—The gameto- phytes and embryo of Pseudotsuga douglasii. Jbzd. 23: 163-180. 1909.—The gameto- phytes and embryo of Sciadopitys verticillata. Ibid. 24: 403-421. 1910.—Nuclear osmosis as a factor in mitosis. bid. 48: 137-161. 1911. The phase of the nucleus known as synapsis. Ibid. 47: 591-604. 1911.—A study in chromosome reduction. Trans. Roy. Soc. Edinburgh. 48: 601-627. 1912. 11 FLORENCE MAY LYON-NORTON S.B., The University of Chicago, Chicago, Illinois, 1897; Ph.D. (Botany and Zoblogy), Chicago, August, 1901 ADDRESS: AKRON, OHIO Instructor in Botany, The University of Chicago, Chicago, Illinois, 1901-04. PUBLICATIONS A contribution to the life history of Euphorbia corollata. Bot. Gaz. 25: 418-426. 1898.—A study of the sporangia and gametophytes of Selaginella apus and Selaginella rupestris. Jbid. 32: 124-141, 170-194. 1901.—Two megasporangia in Selaginella. Ibid. 36: 308. 1903.—The evolution of the sex organs of plants. Ibid. 37: 280-293. 1904.—Another seed-like characteristic of Selaginella. bid. 40:73. 1905.—The spore coats of Selaginella. Ibid. 40: 285-295. 1905. 12 BURTON EDWARD LIVINGSTON B.S.Biol., University of Michigan, 1898; Ph.D. (Plant Physiology and Animal Physiology), Chicago, December, 1901 PROFESSOR OF PLANT PHYSIOLOGY AND DIRECTOR OF THE LABORATORY OF PLANT PHYSIOLOGY OF THE JOHNS HOPKINS UNIVERSITY, BALTIMORE, MARYLAND Assistant in Plant Physiology, University of Chicago, 1902-1904; Associate, 1904; Collaborator, U. 8. Bureau of Forestry, Washington, D. C., Michigan Geological Survey and Michigan Forestry Commission, Lansing, Michigan, 1902; Research Assistant, Car- negie Institution of Washington, 1904; Soil Expert, U. S. Department of Agriculture, Bureau of Soils, Washington, D. C., 1905-06; Member of Staff of Desert Laboratory, Car- negie Institution’of Washington, Tucson, Arizona, 1906-09; Professor of Plant Physiology, The Johns Hopkins University, Baltimore, Maryland, 1909-14; Professor of Plant Physiol- ogy and Director of the Laboratory of Plant Physiology, 1914—. Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Chem. Soc., Amer. Soc. Nat., Bot. Soc. Amer., Ecol. Soc. Amer., Sigma Xi. Walker Prize, Boston Soc. Nat. Hist., 1903. Managing Editor, Phystological Researches; Member, Plant World Association. PUBLICATIONS On the nature of the stimulus which causes the change of form in polymorphic green algae. Bot. Gaz. 30: 289-317. 1900.—Further notes on the physiology of polymor- phism in green algae. Ibid. 32: 292-302. 1901.—The distribution of the plant socie- ties of Kent County, Michigan. Ann. Rept. Mich. State Board Geol. Surv. 1901: 81- 108. 1902.—The distribution of the upland plant societies of Kent County Michigan, Bot. Gaz. 35: 36-55. 1903.—The effect of the osmotic pressure of the medium upon the growth and reproduction of organisms. Role of diffusion and osmotic pressure in plants, Chap. IV. (Preprinted from the next.) Chicago, 1903.—The role of diffusion and osmotic pressure in plants. Decenn. Pub. Univ. Chicago. Second Series, Vol. VIII. Chicago, 1903.—The soils and vegetational possibilities of the Michigan Forestry Reserve. Ann. Rept. Mich. Forestry Commission 1902: 38-40. 1903.—Physical properties of bog water. Bot. Gaz. 37: 383-385. 1904.—An experiment on the relation of soil physics to plant growth. (With H. G. Jensen.) Ibid. 38: 67-71. 1904.—The relation of soils to natural vegetation in Roscommon and Crawford counties, Michigan. Ibid. 39: 22-41. 1905.—Chemical stimulation of a green alga. Bull. Torr. Bot. Club 32: 1-34. 1905. —The relation of soils to natural vegetation in Roscommon and Crawford counties, Michigan. Ann. Rept. Mich. State Board Geol. Surv. 1903: 9-30. 1904.—Notes on the physiology of Stigeoclonium. Bot. Gaz. 39: 297-300. 1905.—Physiological proper- ties of bog water. Ib¢d. 39: 348-355. 1905.—Studies on the properties of an unproduc- tive soil. (With J. C. Britton and F. R. Reid.) U.S. Dept. Agric., Bur. Soils, Bull. 28. Washington, 1905.—Relation of transpiration to growth in wheat. Bot. Gaz. 40: 178-195. 1905—Note on the relation between the growth of roots and of tops in wheat. Ibid. 41: 139-143: 1906.—A simple method for experiments with water cul- tures. Plant World 9: 13-16. 1906.—Paraffined wire pots for soil cultures. Ibid. 9: 62-66. 1906.—The relation of desert plants to soil moisture and to evaporation. Car- negie Inst. Wash. Pub. 50. Washington. 1906.—Relative transpiration in cacti. Plant World 10: 110-114. 1907.—Further studies on the properties of unproductive soils. (Assisted by C. A. Jensen, J. F. Breazeale, F. R. Pember and J.J. Skinner.) U.S. Dept. Agric., Bur. Soils, Bull. 36. Washington, 1907.—Evaporation as a climatic factor influ- encing vegetation. (Proc. Internat. Confer. on Plant Hardiness and Acclimatization, Oct., 1907.) Hort. Soc. N. Y. Memoirs 2: 43-54. 1910.—Evaporation and plant de- 13a BURTON EDWARD LIVINGSTON velopment. Plant World 10: 269-276. 1907.—Evaporation and plant habitats. Ibid. 11:1-9. 1908.—A simple atmometer. Science N. S. 28: 319-320. 1908. A method for controlling plant moisture. Plant World 11: 39-40. 1908.—The botanical garden of Florence. Ibid. 11: 86-88. 1908.—Evaporation and centers of plant distribution. Ibid. 11: 106-112. 1908.—The botanical garden at Pisa. bid. 11: 156-157. 1908.—A new method for cultures of algae and mosses. Ibid. 11: 183-184. 1908.—Soils of the Desert Laboratory domain. (In: Spalding, Distribution, etc., of desert plants. Carnegie Inst. Wash. Pub. 113. Pages 83-93.) 1909.—Present problems of physiological plant ecology. Amer. Nat. 43: 369-378. 1909.—Present problems of physiological plant ecology. Plant World 12: 41-46. 1909.—Ro6les of the soil in limiting plant activities. Ibid. 12: 49-53. 1909.—A repeated cycle in assimilation. Ibid. 12: 66-67. 1909.— Stomata and transpiration in Tradescantia zebrina. Science N. 8. 29: 269-270. 1909. —The heath of Liineburg. Plant World 12: 231-237. 1909.—A rain-correcting at- mometer for ecological instrumentation. Jbid. 13: 79-82. 1910.—Operation of the porous cup atmometer. Jbzd. 13: 111-118. 1910.—Relation of soil moisture to desert vegetation. Bot. Gaz. 50: 241-256. 1910.—A radio-atmometer for comparing light intensities. Plant World 14: 96-99. 1911.—The relation of the osmotic pressure of the cell sap in plants to arid habitats. Jbéd. 14: 153-164. 1911.—Light intensity and transpiration. Bot. Gaz. 52: 417-438. 1911.—A study of the relation between summer evaporation intensity and centers of plant distribution in the United States. Plant World 14: 205-222. 1911—Paper atmometers for studies in evaporation and plant transpiration. Ibid, 14: 281-289. 1911.—Relation of-the daily march of transpiration to variations in the water content of foliage leaves. (With W. H. Brown.) Bot. Gaz. 53: 309-330. 1912.—Observations on the degree of stomatal movement in certain plants. (With A. H. Estabrook.) Bull. Torr. Bot. Club. 39: 15-22. 1912.—Present problems in soil physics as related to plant activities. Amer. Nat 46: 294-301. 1912.—The choosing of a problem for research in plant phys- iology. Plant World 15: 73-82. 1912.—A rotating table for standardizing porous cup atmometers. Ibid. 15: 157-162. 1912—A schematic representation of the water relations of plants, a pedagogical suggestion. Jbid. 15: 214-218. 1912.— The resistance offered by leaves to transpirational water loss. Jb¢d. 16: 1-35. 1913.— Adaptation in the living and non-living. Amer. Nat. 47: 72-82. 1913.—Osmotic pres- sure and related forces as environmental factors. Plant World 16: 165-176. 1913.— Climatic areas of the United States as related to plant growth. Proc. Amer. Phil. Soc. 52: 257-275. 1913—Temperature coefficients in plant geography and climatology. (With G. J. Livingston.) Bot. Gaz. 56: 349-375. 1913.—The relation of atmospheric evaporating power to soil moisture content at permanent wilting in plants. (With J. W. Shive.) Plant World 17: 81-121. 1914.—Influence of humidity and illumination on transpiration. Ibid. 17: 216-219. 1914.—On the water-supplying power of the soil as indicated by osmometers. (With H. E. Pulling.) Carnegie Inst. Wash. Pub. 204: 5-48. Washington, 1915.—The water-relation between plant and soil. (With L.A. Hawkins.) Carnegie Inst. Wash. Pub. 204: 49-84. Washington, 1915.—Atmometry and the porous cup atmometer. Plant World 18: 21-30, 51-74, 95-111, 143-149. 1915.—Atmospheric influence upon evaporation and its direct measurement. Monthly Weather Rev. 43: 126-131. 1915.—A modification of the Bellani porous-plate at- mometer. Science N. S. 41: 872-874. 1915.—Physiological temperature indices for the study of plant growth in relation to climate. Physiol. Res. 1: 399-420. 1916.—A single index to represent both moisture and temperature conditions as related to plant growth. Physiol. Res. 1: 421-440. 1916.—The daily march of transpiring power as indicated by the porometer and by standardized hygrometric paper. (With S. F. Trelease.) Jour. Ecol., in press.—Measurement of evaporation rates for short time intervals. (With E. S. Johnston.) ee ee in press. THEODORE CHRISTIAN FRYE B.S., University of Illinois, 1894; Ph.D. (Botany and Zodlogy), Chicago, August, 1902 PROFESSOR OF BOTANY, UNIVERSITY OF WASHINGTON, SEATTLE, WASHINGTON Professor of Biology, Morningside College, Sioux City, Iowa, 1902-03; Professor of Botany, University of Washington, Seattle, Washington, 1903—. In charge, Puget Sound Marine Station, summers, 1905, 1907-1909; Director, 1914—. In charge, Kelp Investiga- tion Expedition to southeastern Alaska, U. S. Bureau of Soils, May-Sept., 1913. Acting Dean, College of Science, University of Washington, Seattle, Washington, 1914—. Member: Amer. Assoc. Adv. Sct. (Fellow, and Member Executive Committee, Pacific Branch), Bot. Soc. Amer., Wash. Acad. Sci., Amer. Assoc. Univ. Professors. PUBLICATIONS Booxs. A key to the families of Washington plants. (With Engstrom.) 19 pp. Seattle, 1908.—Laboratory exercises in elementary botany. (WithG.B. Rigg.) 75 pp. Seattle, 1909—2nd Ed. 139 pp. Boston, 1911.—Northwest flora. (With G. B. Rigg.) 454 pp. Seattle, 1912.—The ferns of Washington. (With Jackson.) 59 pp. Seattle, 1914.—Elementary flora of the Northwest. (With G. B. Rigg.) 254 pp. New York, 1914. Papers. Development of the pollen in some Asclepiadaceae. Bot. Gaz. 22: 325- 331. 1901.—A morphological study of certain Asclepiadaceae. Ibid. 24: 389-413. 1902.—The embryo sac of Casuarina stricta. Jbid. 36: 101-118. 1903.—High school herbaria. Northwest Jour. Ed. 15: 14-16. 1904.—A contribution to the life history of Apocynum androsaemifolium. (With Blodgett.) Bot. Gaz. 40: 49-53. 1905.— Nereocystis luetkeana. Jbzd. 42: 143-146. 1906.—Clams and clam diggers. Washi- ington Mag. (Seattle) 1: 478-480. 1906—Note on Catharinea rosulata. Bryologist 10: 53-54. 1907.—Thallophytes and bryophytes from the Olympic mountains. The Mountaineer 1: 117-138. 1908.—A few lichens and bryophytes from Mount Hood. Bryologist 12: 6-7. 1909.—Peculiarity in Neckera mensiesii. Jbzd. 12: 52-53. 1909. —Grimmia olympica, a new species. Jbzd. 13: 58-59. 1910.—The Polytrichaceae of western North America. (With Waddingham.) Proc. Wash. Acad. Sci. 12: 271-328. 1910.—Height and dominance of the Douglas fir. Forestry Quart. 8: 465-470. 1910. —Flora characteristic of the different soils. (In: Soil survey of Puget Sound. U.S. Dept. Agric., Bur. Soils. Pages 34-40.) 1911.—The fernsof Washington. (With Jack- son.) Amer. Fern Jour. 1913.—Hormiscia tetraciliata, sp.nov. (With Zeller.) Puget Sound Marine Sta. Pub. 1: 9-13. 1915.—The kelp beds of southeast Alaska. U.S. Dept. Agric. Rept. 100: 60-104. 1915.—The size of kelps on the Pacific coast of North America. .(With Rigg and Crandall.) Bot. Gaz. 60: 473-482. 1915.—Gas pressure in Nereocystis. Puget Sound Marine Sta. Pub. 1: 85-88. 1916. 14 JOHN FREDERICK GARBER A.B., University of Illinois, 1897; Ph.D. (Botany and Zodélogy), Chicago, June, 1903 HEAD OF DEPARTMENT OF BOTANY, YEATMAN HIGH SCHOOL, ST. LOUIS, MISSOURI Instructor in Biology, State Normal School, River Falls, Wisconsin, 1903-05; Teacher of Botany, Yeatman High School, St. Louis, Missouri, 1905-10; Head of Department of Botany, 1910—. Member: Amer. Assoc. Adv. Sci. (Fellow), St. Louis Biological Soc. PUBLICATIONS The life history of Ricciocarpus natans. Bot. Gaz. 37: 161-177. 1904.—Di- morphism in Blissus leucopterus. Biol. Bull. 5: 330-335. 1903. 15 GEORGE MELLINGER HOLFERTY B.S., University of Wisconsin, Madison, Wisconsin, 1893; M.S., University of Cincinnati, Cincinnati, Ohio, 1897; Ph.D. (Botany and Geology), Chicago, June, 1903 INSTRUCTOR IN BOTANY AND PHYSIOGRAPHY, CENTRAL HIGH SCHOOL, ST. LOUIS, MISSOURI.—PROFESSOR OF GENERAL AND MEDICAL BIOLOGY, NATIONAL UNIVERSITY OF ARTS AND SCIENCES, ST. LOUIS, MISSOURI Instructor in Botany and Physiography, Central High School, St. Louis, Missouri, 1903—; Professor of General and Medical Biology, National University of Arts and Sciences, St. Louis, Missouri, 1911—. Member: Amer. Assoc. Adv. Sci. (Fellow), Engelmann Bot. Soc. (St. Louis), St. Louis Biol. Soc., St. Louis Civic League. PUBLICATIONS - Ovule and embryo of Potamogeton natans. Bot. Gaz. 31: 339-346. 1901.—The archegonium of Mnium cuspidatum. Ibid. 37: 106-126. 1904.—Beautiful surround- ings of St. Louis. Physiographic Series, St. Louis Globe-Democrat, 1906. 16 HARRY NICHOLS WHITFORD B.S., Kansas State Agricultural College, Manhattan, Kansas, 1890; M.S., 1900; Ph.D. (Plant Ecology, Plant Physiology and Plant Morphology), _ Chicago, June, 1903 ASSISTANT FORESTER, COMMISSION OF CONSERVATION, OTTAWA, CANADA Botanist and Forester, Philippine Forest Service, 1904-12; Assistant Forester, Com- mission of Conservation, Ottawa, Canada, 1913—. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., Canadian Forestry Assoc., Ecol. Soc. Amer., Forestry Club of British Columbia, Soc. Amer. Foresters. PUBLICATIONS The genetic development of the forests of northern Michigan, a study in physio- graphic ecology. Bot. Gaz. 31: 289-325. 1901.—The forests of the Flathead valley, Montana. Ibid. 39: 99-122, 194-218, 276-296. 1905.—The vegetation of the Lamao Forest Reserve. Philippine Jour. Sci. 1: 373-429, 637-682. 1906.—A preliminary work- ing plan for the Public Forest Tract of the Insular Lumber Co., Negros Occidentalis, P.1. (With H. D. Everett.) Philippine Bur. Forestry Bull. 5: 1-53. 1906.—A prelim- inary working plan for the public forest tract of the Mindoro Lumber and Logging Co., Bongabon, Mindoro, P. I. (With M. L. Merritt.) Ibid. 6: 1-55. 1906.—A preliminary check list of the principal commercial timbers of the Philippine Islands. Ibid. 7: 1-45. 1907.—Studies on the vegetation of the Philippines. I. The com- position and volume of the dipterocarp forests of the Philippines. Philippine Jour. Sci. 4: 699-724. 1909.—The forests of the Philippines. Philippine Bur. Forestry Bull. 10: 1-113. 1911.—The forests of British Columbia. In press. 17 GEORGE HARRISON SHULL B.S., Antioch College, Yellow Springs, Ohio, 1901; Ph.D. (Botany and Zoology), Chicago, March, 1904 PROFESSOR OF BOTANY AND GENETICS, PRINCETON UNIVERSITY, PRINCETON, NEW JERSEY Botanical Investigator, Station for Experimental Evolution of the Carnegie Institu- tion of Washington, Cold Spring Harbor, Long Island, New York, 1904-15; Professor of Botany and Genetics, Princeton University, 1915—. Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Breeders’ Assoc. (Life Member), Amer. Soc. Nat. (Vice-Pres., 1911), Assoc. Internat. Bot., Bot. Soc. Amer., Brooklyn Inst. Arts Sci., Deutsch. Bot. Ges., Ecol. Soc. Amer., National Geog. Soc., Roy. Hort. Soc., Wash. Acad. Sci. Editor, Genetics. : PUBLICATIONS Place-constants for Aster prenanthoides. Bot. Gaz. 38: 333-375. 1904.—Mutants and hybrids of the Oenotheras. (With D. T. MacDougal, A. M. Vail and J. K. Small.) Carnegie Inst. Wash. Pub. 24: 1-57. Washington, 1905.—Galtonian regression in the “pure line.” Torreya 5:21-25. 1905.—Stages in the development of Sium cicutaefolium. Carnegie Inst. Wash. Pub. 30: 1-28. Washington, 1905.—Ascidia in Fraxinus. Science N. 8. 23: 201. 1906.—Elementary species and hybrids of Bursa. Ibid. 15: 590-591. 1907.—The significance of latent characters. Ibid. 15: 792-794. 1907.—Some latent characters of awhite bean. Ibid. 15:828-832. 1907.—Mutations, variations, and rela- tionships of the Oenotheras. (With D. T. MacDougal and A.M. Vail.) Carnegie Inst. Wash. Pub. 81: 1-92. Washington, 1907.—Importance of the mutation theory in practical breeding. Proc. Amer. Breeders’ Assoc. 3: 60-67. 1907.—Some new cases of Men- delian inheritance. Bot. Gaz. 45: 103-116. 1908.—The pedigree culture; its aims and methods. Plant World 11: 21-28, 55-64. 1908.—A new Mendelian ratio and several types of latency. Amer. Nat. 42: 432-451. 1908—The composition of a field of maize. Proc. Amer. Breeders’ Assoc. 4: 296-301. 1908.—Doctor Baur on variegation. Plant World 11: 147-151. 1908.—A pure-line method in corn-breeding. Proc. Amer. Breeders’ Assoc. 5: 51-59. 1909.—The ‘presence and absence’ hypothesis. Amer. Nat. 43: 410-419. 1909.—Bursa bursa-pastoris and Bursa heegeri: Biotypes and hybrids. Carnegie Inst. Wash. Pub. 112: 1-57. 1909.—A simple chemical device to illustrate Mendelian inheritance. Plant World 12: 145-153. 1909.—Color inheri- tance in Lychnis dioica L. Amer. Nat. 44:83-91. 1910.—Inheritance of sex in Lychnis. Bot. Gaz. 49: 110-125. 1910.—Results of crossing Bursa bursa-pastoris and Bursa heegeri. Proc. Seventh Internat. Zodl. Cong. Pp. 403-408. 1910—Germinal analysis through hybridization. Proc. Amer. Phil. Soc. 49: 281-290. 1910.—Hybridi- zation methods in corn-breeding. Amer. Breeders’ Mag. 1: 98-107. 1910.—Defective inheritance-ratios in Bursa hybrids. Verhandl. Naturforsch. Ver. Briinn 49: 157-168. 1910.—The genotypes of maize. Amer. Nat. 45: 234-252. 1911.—Reversible sex-mu- tants in Lychnis dioica. Bot. Gaz. 52: 328-368. 1911.—‘“‘Genotypes,” “biotypes,” “‘oure lines,’ and ‘clones.’ Science N. 8. 35: 27-29. 1912.—‘‘Phenotype”’ and “clone.” Jbzd. 35: 182-183. 1912.—Experiments with maize. Bot. Gaz. 52: 480-485. 1911.—‘“‘Genes” or ‘“‘Gens?” Science N. S. 35:819. 1912.—Inheritance of the heptandra-form of Digitalis purpurea L. Zeitsch. indukt. Abstam. und Vererbungs- lehre 4: 257-267. 1912.—A pilgrimage to Briinn. The Antiochian. 1912. (Re- printed, Amer. Jour. Pharm. 87: 69-75. 1915.)—The primary color-factors of Lychnis and’ color inhibitors of Papaver rhoeas. Bot. Gaz. 54: 120-135. 1912. Hermaphro- dite females in Lychnis dioica. Science N. 8. 34:482-483. 1912.—Duplicate genes for capsule-form in Bursa bursa-pastoris. Zeitsch. indukt, Abstam. und Vererbungs- 18a GEORGE HARRISON SHULL lehre 12: 97-120. 1914.—Ueber die Vererbung der Blattfarbe bei Melandrium. Ber. Deutsch. Bot. Ges. 31: 40-80. 1914.—Sex-limited inheritance in Lychnis dioica L. Zeitschr. indukt. Abstam. und Vererbungslehre 12: 265-302. 1914. A peculiar negative correlation in Oenothera hybrids. Jour. Genetics 4: 83-102. 1914.—The longevity of submerged seeds. Plant World 17: 329-337. 1914.—Genetic definitions in the New Standard Dictionary. Amer. Nat. 49: 52-59. 1915. 186 LAETITIA MORRIS SNOW A.B., Goucher College, Baltimore, Maryland, 1895; Ph.D. (Plant Physiology, Plant Ecology and Plant Morphology), Chicago, June, 1904 ASSOCIATE PROFESSOR OF BOTANY, WELLESLEY COLLEGE, WELLESLEY, MASSACHUSETTS Head of Department of Biology, State Normal School, Farmville, Virginia, 1904-08; Instructor in Botany, Wellesley College, Wellesley, Massachusetts, 1908-11; Associate Professor, 1911—., Alice Freeman Palmer Fellow, Association of Collegiate Alumnae, 1915-16. Member: Amer. Assoc. Adv. Sci. (Fellow), Assoc. Collegiate Alumnae, Bot. Soc. Amer., Ecol. Soc. Amer., National Geog. Soc., Phi Beta Kappa, Sigma Xi. PUBLICATIONS Some notes on the ecology of the Delaware coast. Bot. Gaz. 34: 284-306. 1902.—The microcosm of the drift line. Amer. Nat. 36: 855-864. 1902.—The devel- opment of root hairs. Bot. Gaz. 40: 12-48. 1905.—Progressive and retrogressive changes in the plant associations of the Delaware coast. Ibid. 55: 45-55. 1912.—A simple method for filling an osmometer. Science N. 8. 40: 208. 1914.—Contribu- tions to the knowledge of the diaphragms of water plants. I. Scirpus validus. Bot. Gaz. 58: 495-517. 1914. 19 WILLIAM JESSE GOAD LAND S.B., The University of Chicago, 1903; Ph.D. (Plant Morphology and Plant Physiology), September, 1904 ASSOCIATE PROFESSOR OF PLANT MORPHOLOGY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Assistant in Botany, The University of Chicago, 1904-06; Associate, 1906-08; Instruc- tor, 1908-11; Assistant Professor, 1911-15; Associate Professor, 1915—. Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Microsc. Soc., Bot. Soc. Amer., Deutsch. Bot. Ges., Illinois Acad. Sci. PUBLICATIONS Double fertilization in Compositae. Bot. Gaz. 30: 252-260. 1900.—A morpho- logical study of Thuja. Ibid. 34: 249-259. 1902.—Spermatogenesis and odgenesis in Ephedra trifurca. Ibid. 38: 1-18. 1904.—Gametophytes and embryo of Torreya taxifolia. (With J. M. Coulter.) Ibid. 39: 161-178. 1905.—The origin of air cham- bers. Ibid. 44: 197-213. 1907.—Fertilization and embryogeny in Ephedra trifurca. Ibid, 44: 273-292. 1907.—The origin of the cupule of Marchantia. Ibid. 46: 401- 409. 1908.—An American Lepidostrobus. (With J. M. Coulter.) Ibid. 51: 449-453. 1911.—An electrical constant temperature apparatus. Ibid. 52: 391-399. 1911.—A protocorm of Ophioglossum. Ibid. 52:478-479. 1911.—Vegetative reproduction in Ephedra. Ibid. 55:4389-445. 1913.—The origin of monocotyledony. (With J. M. Coulter.) Ibid. 57:409-519. 1914—A method of controlling the temperature of the paraffin block and microtome knife. Ibid. 57: 520-523. 1914.—Microtechnical meth- ods. Ibid. 59:397-401. 1915.—Chloroform as a paraffin solvent in the imbedding process. Jbid. 61: 253. 1916. 20 WILLIAM BURNET MCCALLUM B.S. Agric., University of Toronto, Toronto, Canada, 1894; Ph.D. (Plant Physiology and Plant Morphology), Chicago, September, 1904 CHIEF BOTANIST, INTERNATIONAL RUBBER COMPANY, SAN DIEGO, CALIFORNIA Assistant in Plant Physiology, The University of Chicago, 1905-06; Associate Pro- fessor of Botany, University of Arizona and Arizona Agricultural Experiment Station, Tucson, Arizona, 1907-10; Chief Botanist, International Rubber Company, 1910—. Member: Amer. Assoc. Adv. Sci., Bot. ‘Soe. Amer., Ecol. Soc. Amer. PUBLICATIONS On the nature of the stimulus causing the change of form and structure in Proser- pinaca palustris. Bot. Gaz. 34: 93-108. 1902.—Regeneration in plants. Ibid. 40: 97- 120, 241-263. 1905.—The reciprocal influence of scion and stock. Plant World 12: 281-286. 1909. 21. ROBERT BRADFORD WYLIE B.S., Upper Iowa University, Fayette, Iowa, 1897; Ph.D. (Plant Morphology and Plant Physiology), Chicago, September, 1904 PROFESSOR OF MORPHOLOGICAL BOTANY, STATE UNIVERSITY OF IOWA, IOWA CITY, IOWA Professor of Biology, Morningside College, Sioux City, Iowa, 1904-06; Assistant Pro- fessor of Botany, State University of Iowa, Lowa City, Iowa, 1906-08; Professor of Mor- phological Botany, 1908—; Member, Staff of Instruction, Puget Sound Marine Laboratory, Friday Harbor, Washington, 1908, 1913; Member, Staff of Instruction, Iowa Lakeside Laboratory, Lake Okoboji, Iowa, 1909-12; Member, Kelp Expedition to Alaska, U.S. Bureau of Soils, 1913; Acting Director, Iowa Lakeside Laboratory, 1915. Member: Amer. Assoc. Adv. Sci. (Fellow); Bot. Soc. Amer.; Iowa Acad. Sci. (Fellow). PUBLICATIONS The morphology of Elodea canadensis. Bot. Gaz. 37: 1-22. 1904.—The problem of the small town. Proc. Iowa Forestry and Park Assoc. 1906.—Botany in the Iowa high schools. Proc. Iowa State Teachers’ Assoc. 55: 215-219. 1909.—The flora of Iowa Rock. Proc. Iowa Acad. Sci. 16: 99-101. 1909.—The staminate flower of Elo- dea. Ibid. 17: 80-82. 1910.—Notes on Heteranthera dubia. Ibid. 19: 1381-132. 1912.—A long-stalked Elodea flower. Bull. Labs. Nat. Hist., State Univ. Iowa 6: 45-52. 1913.—A hybrid rag-weed. Proc. Iowa Acad. Sci. 22: 127-128. 1915. 22 MINTIN ASBURY CHRYSLER B.A., University of Toronto, Toronto, Canada, 1894; Ph.D. (Plant Morphology and Plant Physiology), Chicago, December, 1904 PROFESSOR OF BIOLOGY, UNIVERSITY OF MAINE, ORONO, MAINE Instructor in Botany, Harvard University, 1905-07; summers, 1906-08; Botanical Survey of Maryland (Maryland State Weather Service), summer, 1905; Associate Professor of Botany, University of Maine, Orono, Maine, 1907-10; Professor of Botany, 1910-11; Professor of Biology, 1911—. ’ Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Soc. Nat., Bot. Soc. Amer., Josselyn Bot. Soc., New England Bot. Club. PUBLICATIONS Anatomical notes on certain strand plants. Bot. Gaz. 37:461-464. 1904.—The development of the central cylinder of Araceae and Liliaceae. Jbid. 38: 161-184. 1904. ~—Regeneration in Zamia. (With J. M. Coulter.) Ibid. 38:452-458. 1904.—Reforesta- tion at Woods Hole, Massachusetts. Rhodora 7: 121-129. 1905.—The nodes of. grasses. Bot. Gaz. 41: 1-16. 1906.—On cretaceous Pityoxyla. (With E. C. Jeffrey.) Ibid. 42: 1-15. 1906.—The lignites of Brandon. (With E. C. Jeffrey.) Fifth Ann. Rept. Vermont State Geologist. 1906.—The microgametophyte of the Podocarpineae. (With E. C. Jeffrey.) Amer. Nat. 41: 355-364. 1907.—The structure and relation- ships of the Potamogetonaceae and allied families. Bot. Gaz. 44: 161-188. 1907. —Tyloses in the tracheids of conifers. New Phytol. 7: 198-204. 1908.—The nature of the fertile spike in Ophioglossaceae. Ann. Bot. 24: 1-18. 1910.—The ecological plant geography of the coastal zone, west shore district, of Maryland. The plant life of Maryland, Maryland State Weather Service 3: 149-193. 1910.—The origin of the erect cells in the phloem of the Abietineae. Bot. Gaz. 56: 36-50. 1913.—The medullary rays of Cedrus. Ibid. 59: 387-396. 1915. 23 CLIFTON DURANT HOWE A.B., University of Vermont, 1898; M.S., 1901; Ph.D. (Plant Ecology and Plant Morphology), Chicago, December, 1904 ASSISTANT PROFESSOR OF BOTANY AND FORESTRY, UNIVERSITY OF TORONTO, TORONTO, CANADA Instructor in Dendrology, Biltmore Forest School, Biltmore, North Carolina, 1905; Assistant Director, 1906-08; Lecturer in Botany and Forestry, University of Toronto, Toronto, Canada, 1908-13; Assistant Professor, 1913—. Member: Bot. Soc. Amer., Canadian Soc. Forest Engineers, Ecol. Soc. Amer., Roy. Canadian Inst. (Chairman, Biological Section), Soc. Amer. Foresters. Associate Editor, Forestry Quarterly. PUBLICATIONS The reforestation of sand-plains in Vermont. Bot. Gaz. 49: 126-148. 1910.— Distribution and reproduction of the forest in relation to underlying rocks and soils. (In: Forest conditions in Nova Scotia. Commission of Conservation.) Ottawa, 1912. —Trent Watershed survey. (With J. H. White.) Ibid. 1913.—The effect of repeated forest fires upon the reproduction of commercial species in Peterborough county, Ontario. (In: Forest protection in Canada, 1913-14.) Ibid. 1915.—The reproduction of commercial species in the southern coastal forests of British Columbia. (In: Forest protection in Canada, 1913-14.). Ibid. 1915. HEINRICH HASSELBRING B.S.Agric., Cornell University, Ithaca, New York, 1899; Ph,D. (Botany and Chemistry), Chicago, June, 1905 PHYSIOLOGIST, BUREAU OF PLANT INDUSTRY, U. S. DEPARTMENT OF AGRICULTURE, WASHINGTON, D. C. Jefe del Departamento de Botanica, Estacion Central Agronomica, Santiago de las Vegas, Cuba, 1907-09; Physiologist, Bureau of Plant Industry, U. 8. Department of Agri- culture, Washington, D. C., 1909—. Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Phytopath. Soc., Bot. Soc. Amer., Bot. Soc. Wash., Sigma Xi. PUBLICATIONS Comparative study of the development of Trichurus spiralis and Stysanus stemoni- tes. Bot. Gaz. 29: 312-322. 1900.—A new species of Globulina. Bull. Torr. Bot. Club. 2:402-404. 1900.—The bitter rot and its control. Trans. Illinois Hort. Soc. 36: 348-352. 1902.—Canker of apple trees. Univ. Illinois Agric. Exp. Sta. Bull. 70. 1902.—The appressoria of the anthracnoses. Bot. Gaz. 42: 135-142. 1906.—Gravity as a form-stimulus in fungi. Jb¢d. 43: 251-258. 1907.—The carbon assimilation of Penicillium. Ibid. 45: 176-193. 1908—Types of Cuban tobacco. Jbid. 53: 113-126. 1912.—The effect of shading on the transpiration and assimilation of the tobacco plant in Cuba. Ibid. 57: 257-286. 1914.—The relation between the transpiration stream and the absorption of salts. Ibid. 57: 72-73. 1914.—Effectos de la sombra sobre la trans- piracion y la asimilacion de la planta del tabaco en Cuba. Estac. Exp. Agron., Cuba, Bol. 24. 1915.—Tipos de tabaco Cubano. Jb7d. Bol. 23. 1915.—Physiological changes in sweet potatoes during storage. (With L. A. Hawkins.) Jour. Agric. Res. 3: 331- 342. 1915.—Respiration experiments with sweet potatoes. (With L. A. Hawkins.) Ibid. 5:509-517. 1915.—Carbohydrate transformations in sweet potatoes. (With L. A. Hawkins.) Ibid. 5: 548-560. 1915.—Iris, and other articles, in Bailey’s Cyclopedia of Amer. Hort.—Revision of same, in Standard Cyclopedia of Hort. 25 ETOILE BESSIE SIMONS A.B., University of Kansas, Lawrence, Kansas, 1895; Ph.D, (Plant Morphology and Plant Physiology), Chicago, June, 1905 IN CHARGE, EMPLOYMENT AND WELFARE DEPARTMENTS, FRED HARVEY SYSTEM, CHICAGO, ILLINOIS Instructor in Botany, Evanston High School, Evanston, Illinois, 1905-06; Assistant in Botany, Northwestern University, Evanston, Illinois, 1905-06; Assistant Professor of Biology, in charge of Department of Biology, Western College for Women, Oxford, Ohio, 1906-07; In charge of Department of Biology, Manual Training High School, Indianapolis, Indi- ana, 1907-11; In charge, Employment and Welfare Departments, Fred Harvey System, Chicago, Illinois, 1911—. Member: The Cordon (Charter Member), Social Sci. Club (Chicago). PUBLICATION A morphological study of Sargassum filipendula. Bot. Gaz. 41: 161-182. 1906. 26 WILLIAM CROCKER B.S., University of Illinois, Urbana, Illinois, 1902; A.M., 1903; Ph.D, (Botany and Chemistry), Chicago, August, 1906 ASSOCIATE PROFESSOR OF PLANT PHYSIOLOGY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS.—COLLABORATOR AND PLANT PHYSIOLOGIST, U.S. DEPARTMENT OF AGRICULTURE, BUREAU OF PLANT INDUSTRY, WASHINGTON, D. C. Assistant in Plant Physiology, The University of Chicago, 1906-07; Associate, 1907- 08; Instructor, 1909-11; Assistant Professor, 1911-15; Associate Professor, 1915—. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer. PUBLICATIONS Réle of seed coats in delayed germination. Bot. Gaz. 42: 265-91. 1906.—Germi- nation of seeds of water-plants. Ibid. 44: 375-380. 1907.—Effect of illuminating gas and ethylene upon flowering carnations. (With L. I. Knight.) Ibid. 46: 259-276. 1908.—Effect of illuminating gas and its constituents on flowering carnations. (With L. I. Knight.) Plant World 12: 83-88. 1909.—Longevity of seeds. Bot. Gaz. 47: 69- 72. 1909.—A new method of detecting traces of illuminating gas. (With L. I. Knight and R. C. Rose.) Science N.S. 31: 636. 1910—Toxicity of smoke. (With L. I. Knight.) Bot. Gaz. 55: 337-3871. 1913.—The peg of Cucurbitaceae. (With L. I. Knight and Edith A. Roberts.) Ibid. 50: 321-339. 1910.—The effects of advancing civilization upon plants. School Sci. Math. 13: 277-289. 1913.—Delayed germination in the seed of Alisma plantago. (With W. E. Davis.) Bot. Gaz. 58: 285-3821. 1914.—A method of prophesying the life duration of seeds. (With J. F. Groves.) Proc. Nat. Acad. Sci. 1: 152-155. 1915.—Mechanics of dormancy in seeds. Amer. Jour. Bot. 3: 99-120. 1916. 27 HEMMING GERHARD JENSEN B,S., Cornell University, Ithaca, New York, 1899; Ph,D, (Plant Physiology and Plant Morphology), Chicago, August, 1906 ASSISTANT PROFESSOR OF PLANT PHYSIOLOGY AND PHARMACOGNOSY, STATE COLLEGE OF WASHINGTON, PULLMAN, WASHINGTON Instructor in Botany, Pharmacognosy and Commercial Microscopy, Northwestern University School of Pharmacy, Chicago, Illinois, 1903-06; Assistant Professor, 1906-09; Professor and Head of Department, 1909-13; Assistant Professor of Plant Physiology and Pharmacognosy, State College of Washington, Pullman, Washington, 1914—. Member, Bot. Soc. Amer. PUBLICATIONS An experiment on the relation of soil physics to plant growth. (With B. E. Livingston.) Bot. Gaz. 38: 67-71. 1904.—Toxic limits and stimulation effects of some salts and poisons on wheat. Jbid. 43: 11-44. 1907.—The morphology of the wheat grain. Washington State Coll. Bulletin. In press. 28 FRANCES GRACE SMITH A.B., Smith College, Northampton, Massachusetts, 1893; Ph.D. (Plant Morphology, Plant Ecology and Plant Physiology), Chicago, August, 1906 ASSOCIATE PROFESSOR OF BOTANY, SMITH COLLEGE, NORTHAMPTON, MASSACHUSETTS Instructor in Botany, Smith College, Northampton, Massachusetts, 1905-11. Associ- ate Professor, 1911—. Member, Bot. Soc. Amer. PUBLICATIONS Morphology of the trunk and development of the Microsporangium of cycads. Bot. Gaz. 43: 187-205. 1907.—Development of the ovulate strobilus and young ovule of Zamia floridana. Ibid. 50: 128-141. 1910. 29 SHIGEO YAMANOUCHI Ph.D, (Plant Morphology and Plant Physiology), Chicago, March, 1907 PROFESSOR OF BOTANY, TOKYO TEACHERS’ COLLEGE, TOKYO, JAPAN Technical Assistant in Botany, The University of Chicago, 1907-08; Assistant in Botany, 1908-09; Professor of Botany, Tokyo Teachers’ College, 1909-11; Sc.D. Riga- kuhakushi, Tokyo Teachers’ College, Tokyo, Japan, 1911; Assistant in Botany, The ee Chicago, 1911-12; Professor of Botany, Tokyo Teachers’ College, Tokyo, apan, —, Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer., Deutsch. Bot. Ges., Sigma Xi. PUBLICATIONS The life history of Polysiphonia violacea Grev. (Preliminary note.) Bot. Gaz. 41:425. 1906.—The life history of Polysiphonia. Jbid.42: 401-449. 1906—Apogamy in Nephrodium. Ibid. 44: 142-146. 1907.—Sporogenesis in Nephrodium. Ibid. 45: 1-30. 1908.—Spermatogenesis, odgenesis and fertilization in Nephrodium. Jbid. 45: 145-175. 1908.—Apogamy in Nephrodium. Ibid. 45: 289-318. 1908.—Mitosis in Fucus. Ibid. 47: 173-197. 1909.—Cytology of Cutleria and Aglaozonia. Ibid. 48: 380-387. 1909.—Chromosomes in Osmunda. Jbid. 49: 1-12. 1910.—The life history of Cutleria. Ibid. 54: 441-502. 1912.—Hydrodictyon africanum, anew species. Ibid. 55: 74-79. 1913.—The life history of Zanardinia. Ibid. 56: 1-34. 1913. 30 REINHARDT THIESSEN Ph.B., Lawrence College, Appleton, ‘Wisconsin, 1895; S.B,, The University of Chicago, 1903; Ph,D. (Plant Morphology and Plant Physiology), Chicago, June, 1907 CHEMIST AND MICROSCOPIST, U.5. BUREAU OF MINES, PITTSBURGH, PENNSYLVANIA Assistant Chemist and Microscopist, Technologic Branch, U. 8. Geological Survey, Washington, D. C., 1907-10; Chemist and Microscopist, U. 8. Bureau of Mines, Washing- ton, D. C., 1910—. 4 ae Amer. Assoc. Adv. Sci. (Fellow), Biol. Soc. Wash., Bot. Soc. Amer., National eog. Soc. PUBLICATIONS The vascular anatomy of the seeding of Dioén edule. Bot. Gaz. 46: 357-380. 1908. —Origin of coal. U.S. Bur. Mines Bull. 38. 1914.—On the constitution and genesis of certain lignites and sub-bituminous coals. Eighth Internat. Cong. Applied Chem. 25: 203. 1912. 31 LULA PACE B.S., Baylor College, Belton, Texas, 1890; S.M., The University of Chicago, Chicago, Illinois, 1902; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, August, 1907 PROFESSOR OF BOTANY, BAYLOR UNIVERSITY, WACO, TEXAS Assistant Professor of Biology, Baylor, University, Waco, Texas, 1907-12; Professor, 1912—. Student, University of Bonn (Germany), 1910-11. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., National Geog. Soc. PUBLICATIONS Fertilization of Cypripedium. Bot. Gaz. 44: 353-374. 1907.—The gametophyte of Calopogon. Ibid. 48: 126-137. 1909.—Some peculiar fern prothallia. Ibid. 50: 49- 58. 1910.—Parnassia and some allied genera. Ibid. 54: 306-329. 1912.—Apogamy in Atamosco. Ibid. 56: 376-394. 1913.—Two species of Geostachys. Baylor Univ. Bull. 17: 1-16. 1914. 32 LEONAS LANCELOT BURLINGAME Ph.B., Ohio Northern University, Ada, Ohio, 1991; A.B., The University of Chicago, Chicago, Illinois, 1906; Ph.D. (Plant Morphology and Plant Physiology), Chicago, June, 1908 ASSOCIATE PROFESSOR OF BOTANY, LELAND STANFORD JUNIOR UNIVERSITY, STANFORD UNIVERSITY, CALIFORNIA Professor of Biology and Geology, Ohio Northern University, Ada, Ohio, 1902-04; Assistant in Botany, The University of Chicago, 1906-08; Instructor in Biology, East- ern Illinois State Normal School, Charleston, Illinois, 1906 (summer); Instructor in Botany, Leland Stanford Junior University, 1908-09; Assistant Professor, 1909-16; Asso- ciate Professor, 1916—. Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Assoc. College Professors, Amer. Genetic Assoc., Biol. Soc. Pacific (Secretary, 1913-14), Bot. Soc. Amer., California Acad. Sci., Phi Beta Kappa, Sigma XI, Western Nat. PUBLICATIONS The sporangium of the Ophioglossales. Bot. Gaz. 44: 34-56. 1907.—The stami- nate cone and male gametophyte of Podocarpus. Jbid. 46: 161-178. 1908.—The morphology of Araucaria braziliensis. I. The staminate cone and male gemetophyte. Ibid. 50: 97-114. 1913.—Same title. II. The ovulate cone and female gametophyte. Ibid. 57: 490-508. 1914.—Same title. III. Fertilization, the embryo, and the seed. Ibid. 59: 1-39. 1915.—The origin and relationships of the araucarians. Ibid. 60: 1-26, 89-114. 1915.—Labelling microscopic slides. Science N.S. 39: 250-251. 1914,— Embedding trays for paraffine work. Ibid. 40: 355. 1914.—Turpentine as a labora- tory reagent. Ibid. 40: 356. 1914. 33 REGINALD RUGGLES GATES B.A., Mt. Allison University, Sackville, New Brunswick, Canada, 1903; Ph.D. (Botany and Zoblogy), Chicago, June. 1908 ACTING ASSOCIATE PROFESSOR OF ZOOLOGY, UNIVERSITY OF CALIFORNIA, BERKELEY, CALIFORNIA Assistant in Botany, The University of Chicago, Chicago, Illinois, 1908-09; Assistant in Algae, Marine Biological Laboratory, Woods Hole, Massachusetts, Summer, 1909; Mem- ber of Staff of Missouri Botanical Garden, 1909-11; Lecturer in charge of Biology, St. Thomas’s Hospital, London, England, 1911-14; Special Lecturer on Mutations, Royal College of Science, London, England, 1912; Lecturer in Cytology, Bedford College, University of London, England, 1913-14; Special Lecturer on Heredity in Relation to Cytology, Oxford University, England, 1914; Acting Associate Professor of Zodlogy, University of California, Berkeley, California, 1915-16. Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Soc. Nat., Bot. Soc. Amer., British Assoc. Adv. Sci., Linn. Soc. London (Fellow), Nova Scotian Inst. Sci., Roy. Bot. Soc.— Huxley Medal and Prize, Imp. Coll. Sci., London, 1913. PUBLICATIONS Nova Scotia fungi (Introduction). Proc. and Trans. Nova Scotian Inst. Sci. 11 (1902): 115-121. 1905.—Fungi of Nova Scotia, first supplementary list. (With A. H. MacKay and others.) Ibid. 12 (1905): 119-138. 1908.—Preliminary note on pol- len development in Oenothera lata de Vries, andits hybrids. Science N. 8. 25: 259-260. 1907.—Pollen development in hybrids of Oenothera lata x Oe. laniarckiana, and its rela- tion to mutation. Bot. Gaz. 43: 81-115. 1907—Hybridisation and germ cells of Oeno- thera mutants. Jbid. 44: 1-21. 1907.—Further studies on the chromosomes of Oeno- thera. Science N.S. 27: 335. 1908.—A study of reduction in Oenothera rubrinervis. Bot. Gaz. 46: 1-34. 1908.—The chromosomes of Oenothera. Science N. 8. 27: 193- 195. 1908.—A preliminary account of studies in the variability of a unit character in Oenothera. Science N. 8. 27: 209. 1908.—A litter of hybrid dogs. Science N.S. 29: 744-747. 1909.—The stature and chromosomes of Oenothera gigas de Vries. Arch. f. Zellforsch. 3: 525-552. 1909.—An analytical key to some of the segregates of Oeno- thera. Ann. Rept. Missouri Bot. Gard. 20: 123-137. 1909.—Further studies of Oeno- theran cytology. Science N.S. 29: 269. 1909.—The behaviour of the chromosomes in Oenothera lata x Oe. gigas. Bot. Gaz. 48: 179-199. 1909.—Some variations and hy- brids of Oenothera. Science N.S. 29: 906. 1909.—Apogamy in Oenothera. Science N. 8. 30: 691-694. 1909.—Studies of inheritance in the evening primrose. (6 pp.) Chicago Med. Rec. 1909.—The chromosomes of Oenothera mutants and hybrids. Proc. 7th Internat. Zoél. Congress (1907). (4 pp.) 1910.—The material basis of Men- delian phenomena. Amer. Nat. 44: 203-213. 1910.—The earliest description of Oeno- thera lamarckiana. Science N. 8. 31: 425-426. 1910.—Abnormalities in Oenothera. Rept. Missouri Bot. Gard. 21: 175-184. 1910.—Chromosome reduction in Oenothera. Bot. Gaz. 44: 64-66. 1910.—Some effects of tropical conditions on the development of certain English Oenotheras. Rept. Brit. Assoc. Adv. Sci. 1909: 677-678. 1910.— Twin hybrids in Oenothera, with a suggestion concerning their explanation. Science N. 8. 33: 262. 1911.—Studies on the variability and heritability of pigmentation in Oenothera. Zeitsch. indukt. Abstam. und Vererbungslehre 4: 337-372. 1911.—Pollen formation in Oenothera gigas. Ann. Bot. 25: 909-940. 1911.—Mutation in Oeno- thera. Amer. Nat. 45: 577-606. 1911.—Early historico-botanical records of the Oenotheras. Proc. Iowa Acad. Sci. 1910: 85-124. 1911.—The mode of chromosome reduction. Bot. Gaz. 51: 321-344. 1911.—Parallel mutations in Oenothera biennis. Nature 89: 659-660. 1912.—Somatic mitoses in Oenothera. Ann. Bot. 26: 993- 1010. 1912.—An onagraceous stem without internodes. New Phytol. 11: 50-53. 34a REGINALD RUGGLES GATES 1912.—Mutations in plants. Bot. Jour. 2: 84-87. 1912.—A new Oenothera. Rhodora 15: 45-48. 1913.—A contribution to a knowledge of the mutating Oenotheras. Trans. Linn. Soc. London II, Bot., 8': 1-67. 1913.—Tetraploid mutants and chromosome mechanisms. Biol. Centralbl. 33: 92-99, 1138-150. 1913.—Oenothera and climate. Science N. 8. 37: 155-156. 1913.—Reduction divisions (?) in somatic tissue. Rept. Brit. Assoc. Adv. Sci. 1912: 681. 1913——The mutations of Oenothera. Nature 91: 647-648. 1913.—Recent papers on Oenothera mutations. New Phytol. 12: 290-302. 1913.—On the apparent absence of apogamy in Oenothera. Science N. 8. 39: 37-38. 1914.—Evidence which shows that mutation and Mendelian splitting are different proc- esses. Proc. Brit. Assoc. Adv. Sci. 1913: 716. 1914.—A cytological study of Oenothera mut. lata and Oe. mut. semilata in relation to mutation. (With Nesta Thomas.) Quart. Jour. Microsc. Sci. 59: 523-571. 1914.—Breeding experiments which show that hybridisation and mutation are independent phenomena. Zeitschr. indukt. Abstam. und Vererbungslehre 11: 209-279. 1914.—Recent aspects of mutation. Nature 94: 296-299. 1914.—Galton and discontinuity in variation. Amer. Nat. 48: 697-699. 1914.—On the nature of mutations. Jour. Hered. 6: 99-108. 1915.—Some Oenotheras from Cheshire and Lancashire. Ann. Missouri Bot. Gard. 1: 3838-400. 1915.—A Texan species of Megapterium. Ann. Missouri Bot. Gard. 1: 401-404. 1915.—On the origin and behaviour of Oenothera rubricalyx. Jour. Genetics 4: 3538-360. 1915.—On the modification of characters by crossing. Amer. Nat. 49: 562-569. 1915.—On succes- sive duplicate mutations. Biol. Bull. 29: 204-220. 1915.—Mutation concepts in rela- tion to organic structure. Monist 25: 531-555. 1915.—An anticipatory mutationist. Amer. Nat. 49: 645-648. 1915.—The mutation factor in evolution. S8vo., xiv + 353 pp., 114 figs. London, 1915.—Teratology and phylogeny in the genus Trillium. Sci- ence N. 8. 42: 879. 1915.—Heredity and mutation as cell phenomena. Amer. Jour. Bot. 2: 519-528. 1910.—Huxley as a mutationist. Amer. Nat. 50: 126-128. 1916.— On pairs of species.—Bot. Gaz. 61: 177-212. 1916. 34b LEROY HARRIS HARVEY B.S., University of Maine, Orono, Maine, 1901; Ph.D, (Plant Ecology, Plant Physiology and Plant Morphology), Chicago, June, 1908 IN CHARGE, DEPARTMENT OF BIOLOGY, WESTERN STATE NORMAL SCHOOL, KALAMAZOO, MICHIGAN Present position, 1908—. Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Nature-Study Soc., Botanists Cent. States, Bot. Soc. Amer., Ecol. Soc. Amer., Mich. Acad. Sci., Mich. Nature-Study and School Garden Assoc., School Garden Assoc. Amer. PUBLICATIONS Pogonia pendula Lindl. in Maine. Rhodora 2: 211-212. 1900.—Further notes on Solanum rostratum and Hieracium praealtum. Rhodora 4: 151-152. 1902.—The dwarf mistletoe at Mount Ktaadn. Plant World 5: 226. 1902.—An ecological excur- sion to Mount Ktaadn. Rhodora 5: 41-52. 1903.—A study of the physiographic ecol- ogy of Mount Ktaadn, Maine. Univ. Maine Studies 1903: 1-50. 1903.—Floral succession in the prairie-grass formation of southeastern South Dakota. Bot. Gaz. 46: 81-108, 277-298. 1908.—The floristic composition of the vascular flora of Mount Ktaadn. Rept. Mich. Acad. Sci. 1909: 37-47. 1909.—School gardening a fundamental factor in education. Kalamazoo Normal Record 3: 97-100. 1912.—Science and society. Ibid. 4: 381-384. 1914.—Mendelism and its meaning. Jour. Mich. State Med. Soc. 13: 698-704. 1914.—The nature of man. Kalamazoo Normal Record 5: 133-142. 1915.—Elementary science in the high school. Jour. Mich. Schoolmasters’ Club 1915: 41-46. 1915.—School gardening a fundamental factor in education. Nature-Study Rev. 12: 179-183. 1916. 35 CHARLES HOUSTON SHATTUCK B.S., Campbell College, Holton, Kansas, 1894; Ph.D, (Plant Morphology and Plant Physiology), Chicago, June, 1908 PROFESSOR OF FORESTRY AND BOTANICAL MORPHOLOGY, AND DEAN OF THE COLLEGE OF LETTERS AND SCIENCES, UNIVERSITY OF IDAHO, MOSCOW, IDAHO Professor of Botany and Forestry, Clemson College, South Carolina, 1908; Professor of Forestry and Botanical Morphology, University of Idaho, Moscow, Idaho, 1909—. Member: Amer. Forestry Assoc., Bot. Soc. Amer., Sigma Xi, Soc. Amer. Foresters. PUBLICATIONS A morphological study of Ulmus americana. Bot. Gaz. 40: 209-223. 1904.—A fossil forest in Jackson county, Kansas. Proc. Kans. Acad. Sci. 19: 107-109. 1905.— The origin of heterospory in Marsilia. Bot. Gaz. 49:19-40. 1910. 36 ALMA GRACEY STOKEY A.B., Oberlin College, Oberlin, Ohio, 1904; Ph.D. (Plant Morphology and Plant Physiology), Chicago, August, 1908 ASSOCIATE PROFESSOR OF BOTANY, MT. HOLYOKE COLLEGE, SOUTH HADLEY, MASSACHUSETTS Instructor in Botany, Mt. Holyoke College, South Hadley, Massachusetts, 1908-11; Associate Professor, 1911—. Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer., Sullivant Moss. Soc. PUBLICATIONS The roots of Lycopodium pithyoides. Bot. Gaz. 44: 34-56. 1907.—The sporan- gium of Lycopodium. Ibid. 50: 218-219. 1910.—The anatomy of Isoetes. Ibid. 47: 311-335. 1909. 37 WANDA MAY PFEIFFER S.B., The University of Chicago, Chicago, Illinois, 1904; Ph.D. (Plant Morphology and Plant Physiology), Chicago, August, 1908 INSTRUCTOR IN PLANT PATHOLOGY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Assistant in Botany, The University of Chicago, Chicago, Illinois, 1909-14; Instructor in Plant Pathology, 1914—. Member, Bot. Soc. Amer., Sigma Xi. PUBLICATIONS Differentiation of sporocarps in Azolla. Bot. Gaz. 44: 445-454. 1907——-The mor- phology of Leitneria floridana. Ibid. 53: 189-202. 1912. 38 SISTER HELEN ANGELA DORETY B.A., College of Saint Elizabeth, Convent Station, New Jersey, 1903; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, March, 1909 PROFESSOR AND HEAD OF THE DEPARTMENT OF BOTANY, COLLEGE OF SAINT ELIZABETH, CONVENT STATION, NEW JERSEY Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., Phi Beta Kappa. PUBLICATIONS The embryo of Ceratozamia: a physiological study. Bot. Gaz. 45: 412-415. 1908.—The seedling of Ceratozamia. Ibid. 46: 203-220. 1908.—Vascular anatomy of the seedling of Microcycas calocoma. Ibid. 47: 139-147. 1909.—The extrafas- cicular cambium of Ceratozamia. Ibid. 47: 150-152. 1909. 39 NIELSINE JOHANNA KILDAHL B.A., University of North Dakota, University, North Dakota, 1898; M.A., 1900; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, March, 1909 ADDRESS: MAZA, NORTH DAKOTA Member: Bot. Soc. Amer., National Geog. Soc., Sigma Xi. PUBLICATIONS Development of the walls in the proembryo of Pinus laricio. Bot. Gaz. 44: 102- 107. 1907.—The morphology of Phyllocladus alpinus. Ibid. 46: 339-347. 1908.— Affinities of Phyllocladus. Ibid. 46: 464-465. 1908. 40 EDITH MINOT TwWIss B.A., Ohio State University, Columbus, Ohio, 1895; S.M., The University of Chicago, 1907; Ph.D. (Botany and Bacteriology), Chicago, September, 1909 PROFESSOR OF BOTANY AND HEAD OF THE DEPARTMENT OF BOTANY, WASHBURN COLLEGE, TOPEKA, KANSAS Teacher of Botany, High School of Commerce, Cleveland, Ohio, 1909-10; Assistant Professor of Botany, Washburn College, Topeka, Kansas, 1910-12; Acting Head of the Department of Botany, 1912-13; Dean of Women, 1911-12; Professor of Botany and Head of the Department of Botany, 1913—. Member: Amer. Assoc. Ady. Sci. (Fellow), Amer. Genetic Assoc., Bot. Soc. Amer., Kansas Acad Sci., Sigma Xi. PUBLICATION The prothallia of Aneimia and Lygodium. Bot. Gaz. 49: 168-181. 1910. 41 CHARLES ORVAL APPLEMAN Ph.B., Dickinson College, Carlisle, Pennsylvania, 1903; Ph.D. (Botany and Bacteriology), Chicago, September, 1910 PLANT PHYSIOLOGIST, MARYLAND AGRICULTURAL EXPERIMENT STATION, COLLEGE PARK, MARYLAND Present position, 1910—. Chairman, Committee on Projects, Maryland Agricultural Experiment Station, 1915—. Member: Amer. Assoc. Adv. Sci., Amer. Chem. Soc., Bot. Soc. Amer., Bot. Soc., Wash. PUBLICATIONS Some observations on catalase. Bot. Gaz. 50: 182-192. 1910.—Physiological behavior of enzymes and carbohydrate transformations in after-ripening of the potato tuber. Ibid. 52: 306-315. 1911.—Metabolic changes in potatoes during sprouting. Science N. 8. 39: 293. 1914.—Changes in potatoes during storage. Maryland Agric. Exp. Sta. Bull. 167: 329-334. 1912.—Study of rest period in potato tubers. Ibid. 183: 181-226. 1914.—Concerning the measurement of diastase activity in plant ex- tracts. Science N. 8. 41:175. 1915.—Relation of catalase and oxidases to respira- tion in plants. Maryland Agric. Exp. Sta. Bull. 191. 1915. 42 GRACE MIRIAM CHARLES B.S., Oberlin College, Oberlin, Ohio, 1900; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, September, 1910 ASSISTANT PROFESSOR OF BOTANY, UNIVERSITY OF KANSAS, LAWRENCE, KANSAS Instructor in Botany, University of Kansas, Lawrence, Kansas, 1911-15; Assistant Professor, 1915—. 3 Member: Amer. Assoc. Adv. Sci., Amer. Genetic Assoc., Bot. Soc. Amer. PUBLICATION The anatomy of the sporeling of Marattia alata. Bot. Gaz. 51: 81-101. 1911. 43 MARY SOPHIE YOUNG B.A., Wellesley College, South Hadley, Massachusetts, 1895; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, September, 1910 INSTRUCTOR IN BOTANY, UNIVERSITY OF TEXAS, AUSTIN, TEXAS Tutor in Botany, University of Texas, 1910-11; Instructor, 1911—. PUBLICATIONS The male gametophyte of Dacrydium. Bot. Gaz. 44: 189-196. 1907.—The morphology of the Podocarpineae. Ibid. 50: 81-100. 1910. 44 Plant World 15: 197-213. WILLIAM SKINNER COOPER B.S., Alma College, Alma, Michigan, 1906; Ph.D. (Botany and Geology), Chicago, June, 1911 INSTRUCTOR IN PLANT PHYSIOLOGY AND ECOLOGY, UNIVERSITY OF MINNESOTA, MINNEAPOLIS, MINNESOTA Lecturer in Ecology, Leland Stanford Junior University, Stanford University, Cali- pain 1914-15; Instructor in Plant Physiology and Ecology, University of Minnesota, 1915—. Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer., Ecol. Soc. Amer. PUBLICATIONS Alpine vegetation in the vicinity of Long’s Peak, Colorado. Bot. Gaz. 45: 319- 337. 1908.—Reproduction by layering among conifers. Ibid. 52: 369-379. 1911.— The ecological succession of mosses as illustrated upon Isle Royale, Lake Superior. 1912.—A list of mosses collected upon Isle Royale, Lake Superior. Bryologist 16: 3-8. 1913.—The climax forest of Isle Royale, Lake Superior, and its development. Bot. Gaz. 55: 1-44, 115-140, 189-235. 1913. 45 GRACE LUCRETIA CLAPP B.A., Smith College, Northampton, Massachusetts, 1905; Ph.D. (Plant Morphology and Plant Physiology), Chicago, September, 1911 INSTRUCTOR IN BOTANY, SMITH COLLEGE, NORTHAMPTON, MASSACHUSETTS Teacher of Botany, Manual Training High School, Indianapolis, Indiana, 1911-14; Instructor in Botany, Smith College, 1914—. PUBLICATIONS A quantitative study of transpiration. Bot. Gaz. 45: 254-267. 1908.—The life history of Aneura pinguis. Ibid. 54:177-192. 1912. 46 SOPHIA HENNION ECKERSON A.B., Smith College, Northampton, Massachusetts, 1905; A.M., 1907; Ph.D. (Plant Physiology and Plant Morphology), Chicago, September, 1911 ASSISTANT IN PLANT PHYSIOLOGY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Fellow in Botany, Smith College, Northampton, Massachusetts, 1905-06; Demon- strator, 1906-07; Assistant, 1907-09; Assistant in Plant Physiology, The University of Chicago, 1911—. i Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., Women’s Agric. and Hort. ssoc. PUBLICATIONS The physiological constants of plants commonly used in American botanical lab- oratories. I. Chlorophyll spectrum. Bot. Gaz. 40: 302-305. 1905.—II. Root pres- sure and exudation. Jbid. 46:50-54. 1908.—III. The number and size of stomata. Ibid. 46: 221-224. 1908.—IV. On-the demonstration of the formation of starch in leaves. Ibid. 48: 224-228. 1909.—A physiological and chemical study of after- ripening. Ibid. 55: 286-299. 1913.—Thermotropism of roots. Ibid. 58: 254-263. 1914. 47 ANNA MORSE STARR A.B., Oberlin College, Oberlin, Ohio, 1906; A.M., 1907; Ph.D. (Plant Ecology and Plant Morphology), Chicago, September, 1911 INSTRUCTOR IN BOTANY, MOUNT HOLYOKE COLLEGE, SOUTH HADLEY, MASSACHUSETTS Present position, 1911—. Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer., Ecol. Soc. Amer., National Geog. oc. PUBLICATIONS The microsporophylls of Gingko. Bot. Gaz. 49: 51-54. 1910.—Comparative anatomy of dune plants. bid. 54: 265-305. 1912.—A Mexican Aytonia. Ibid. 59: 48-58. 1916. 48 MELVIN AMOS BRANNON B.A., Wabash College, Crawfordsville, Indiana, 1899; A.M., 1890; Ph.D. (Plant Morphology, Plant Ecology and Plant Physiology), Chicago, June, 1912 PRESIDENT, UNIVERSITY OF IDAHO, MOSCOW, IDAHO Dean, College of Liberal Arts, University of North Dakota, University, North Dakota, 1911-14; President, University of Idaho, 1914—. PUBLICATIONS Osmotic pressure in potatoes. Bot. Gaz. 56: 433-438. 1913.—The action of Salton sea water on vegetable tissues. Carnegie Inst. Wash. Pub. 193: 71-78. 1913.— Fasciation. Bot. Gaz. 58: 518-526. 1914. 49 LAURA CAMPBELL GANO Ph.B., Earlham College, Richmond, Indiana, 1893; $.B., The University of Chicago, Chicago, Illinois, 1898; M.S. Agric., Cornell University, Ithaca, New York, 1906; Ph.D. (Plant Ecology, Plant Physiology and Plant Morphology), Chicago, June, 1912 ADDRESS: RICHMOND, INDIANA Member: Bot. Soc. Amer., Women’s National Agric. and Hort. Assoc. Dissertation: The physiographic ecology of northern Florida. 50 STELLA MARY HAGUE B.S., Indiana University, Bloomington, Indiana, 1893; Ph.D. (Plant Morphology and Plant Physiology), Chicago, June, 1912 INSTRUCTOR IN BOTANY, UNIVERSITY OF ILLINOIS, URBANA, ILLINOIS Assistant in Botany, University of Illinois, 1912-13; Instructor, 1913—. Member, Bot. Soc. Amer. PUBLICATION A morphological study of Diospyros virginiana. Bot. Gaz. 52: 34-44. 1911. 51 ANSEL FRANCIS HEMENWAY A.B., University of Oregon, Eugene, Oregon, 1902; A.M., 1904; A.M., Harvard University, Cambridge, Massachusetts, 1909; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, June, 1912 PROFESSOR OF BIOLOGY, TRANSYLVANIA COLLEGE, LEXINGTON, KENTUCKY Present position, 1912—. : : Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer., Botanists Cent. States, Sigma Xi. PUBLICATIONS Botanists of the Oregon country. Oreg. Hist. Soc. Quart. 5: 207-214. 1902.— Studies on the phloem of the Dicotyledons. I. Phloem of Juglandaceae. Bot. Gaz. 51: 131-135. 1911.—II. The evolution of the sieve tube. Jbid. 55: 236-248. 1913. 52 LESTER WHYLAND SHARP S.B., Alma College, Alma, Michigan, 1908; Ph.D. (Plant Morphology and Plant Physiology), Chicago, June, 1912 ASSISTANT PROFESSOR OF BOTANY, NEW YORK STATE COLLEGE OF AGRICULTURE, CORNELL UNIVERSITY, ITHACA, NEW YORK Research, University of Louvain, Belgium, 1912-13; Research, The University of Chicago, 1913-14; Instructor in Botany, New York State College of Agriculture, 1914-15; Assistant Professor, 1915—. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., Gamma Alpha, Phi Beta Kappa, Sigma Xi. PUBLICATIONS The closing response in Dionaea. (With W. H. Brown.) Bot. Gaz. 49: 290-302 1910.—The embryo sac of Epipactis. (With W. H. Brown.) Ibid. 52: 439-452. 1911.—The embryo sac of Physostegia. Ibid. 52: 218-225. 1911.—Spermatogenesis in Equisetum. Jbzd. 54: 89-119. 1912.—The orchid embryo sac. Ibid. 54: 372-385. 1912._Somatic chromosomes in Vicia. La Cellule 29: 297-331. 1913.—Spermato- genesis in Marsilia. Bot. Gaz. 58:419-4381. 1914.—Maturation in Vicia. (Prelimi- nary note.) Ibid. 57:531. 1914. 53 WINFRED MCKENZIE ATWOOD A.B., Cornell College, Mount Vernon, Iowa, 1907; Ph.D. (Plant Physiology and Plant Morphology), Chicago, August, 1913 ASSOCIATE PROFESSOR IN THE DEPARTMENT OF BOTANY AND PLANT PATHOLOGY, OREGON AGRICULTURAL COLLEGE, CORVALLIS, OREGON Instructor in Botany, Oregon Agricultural College, 1913-15; Associate Professor, 1915—. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., Sigma Xi. PUBLICATION A physiological study of the germination of Avena fatua. Bot. Gaz. 57: 386-414. 1914. 54 JOHN BENJAMIN HILL B.S.Agric., University of Missouri, Columbia, Missouri, 1908; A.B., Cornell University, Ithaca, New York, 1909; Ph.D. (Plant Morphology and Plant Physiology), Chicago, August, 1913 ASSOCIATE PROFESSOR OF BOTANY, PENNSYLVANIA STATE COLLEGE, STATE COLLEGE, PENNSYLVANIA ‘ Assistant Professor of Botany, Pennsylvania State College, 1913-15; Associate Pro- essor, 1915—. Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer., Sigma Xi. PUBLICATION The anatomy of six epiphytic species of Lycopodium. Bot. Gaz. 58: 61-85. 1911914. 55 LEE IRVING KNIGHT A.B., University of Illinois, Urbana, Illinois, 1902; S.B., The University of Chicago, Chicago, Illinois, 1909: Ph.D. (Plant Physiology and Plant Ecology), Chicago, August, 1913 INSTRUCTOR IN PLANT PHYSIOLOGY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS.—PLANT PHYSIOLOGIST, WEST VIRGINIA EXPERIMENT STATION, MORGANTOWN, WEST VIRGINIA Present positions, 1913—. Member: Amer. Assoc. Adv. Sci., Gamma Alpha. PUBLICATIONS Effect of illuminating gas and ethylene upon the flowering carnation. (Wilh W. Crocker.) Bot. Gaz. 46: 256-276. 1906.—The peg of the Cucurbitaceae. (With W. Crocker and Edith Roberts.) Ibid. 50: 321-339. 1910.—Effects of various gases and vapors upon etiolated seedlings of the sweet pea. (With W. Crocker and R. C. Rose.) Science N.S. 31: 635-636. 1910.—Toxicity of smoke. (With W. Crocker.) Bot. Gaz. 55: 337-871. 1918. 56 JOHN NATHAN MARTIN A.B., Indiana University, Bloomington, Indiana, 1907; Ph.D. (Plant Morphology and Plant Physiology), Chicago, August, 1913 ASSOCIATE PROFESSOR OF BOTANY, IOWA STATE COLLEGE, ~AMES, IOWA Present position, 1913—. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., Iowa Acad. Sci. PUBLICATIONS The physiology of the pollen of Trifolium pratense. Bot. Gaz. 56: 1138-126. 1913. —Comparative morphology of some Leguminosae. Ibid. 58: 154-167. 1914.—Red clover seed production. (With J. M. Westgate and H. 8. Coe.) U.S. Dept. Agric. Bull. 289. 1915.—Relation of moisture to seed-production in alfalfa. Iowa State College Research Bull. 28. 1915.. 57 LOREN CLIFFORD PETRY B.S., Earlham College, Richmond, Indiana, 1907; B.S., Haverford College, Haverford, Pennsylvania, 1908; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, August, 1913 INSTRUCTOR IN BOTANY, SYRACUSE UNIVERSITY, SYRACUSE, NEW YORK Research, The University of Chicago, 1913-14; Instructor in Botany, Syracuse Uni- versity, 1914—. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer. PUBLICATIONS Branching in the Ophioglossaceae. Bot. Gaz. 59: 345-365. 1915.--The anato- my of Ophioglossum pendulum. Jbid. 57: 169-192. 1914. 55 NORMA ETTA PFEIFFER S.B., The University of Chicago, Chicago, Illinois, 1969; Ph.D. (Plant Morphology and Plant Physiology), Chicago, August, 1913 ASSISTANT PROFESSOR OF BOTANY, UNIVERSITY OF NORTH DAKOTA, UNIVERSITY, NORTH DAKOTA Instructor in Botany, University of North Dakota, 1913-15; Assistant Professor, 1915—. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., North Dakota Acad. Sci. PUBLICATIONS Abnormalities in prothallia of Pteris longifolia. Bot. Gaz. 53: 436-4388. 1912.— Morphology of Thismia americana. Ibid. 57: 122-135. 1914.—Undiscovered plants. Quart. Jour. Univ. North Dakota 5: 43-48. 1914.—The gametophyte of Ophioglossum vulgatum. Bot. Gaz., in press. 59 GEORGE SMITH BRYAN A.B., Furman University, Greenville, South Carolina, 1900; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, June, 1914 INSTRUCTOR IN BOTANY, UNIVERSITY OF WISCONSIN, MADISON, WISCONSIN Present position, 1914—. Member: Bot. Soc. Amer., Wisconsin Acad. Sci. Arts and Letters. PUBLICATION The archegonium of Sphagnum subsecundum. Bot. Gaz. 59:40-56. 1915. 61 EDWARD MARIS HARVEY A.B., Friends’ University, Wichita, Kansas, 1910; Ph.D. (Plant Physiology, Plant Ecology and Plant Morphology), Chicago, June, 1914 SCIENTIFIC ASSISTANT, U.S. DEPARTMENT OF AGRICULTURE, BUREAU OF PLANT INDUSTRY, FRUIT DISEASE INVESTIGATIONS, WATSONVILLE, CALIFORNIA Present position, 1914—. Member: Amer. Assoc. Adv. Sci. (Fellow), Amer. Ecol. Soc., Bot. Soc. Amer., National Geog. Soc. PUBLICATIONS The action of the rain-correcting atmometer. Plant World 16: 89-93. 1913.— The castor-bean plant and laboratory air. Bot. Gaz. 56:439-442. 1913.—Evapora- tion and soil moisture on the prairies of Illinois. Trans. Illinois Acad. Sci. 6: 92-99. 1913.—The effects of illuminating gas on root systems. (With R. C. Rose.) Bot. Gaz. 60: 27-44. 1915.—Some effects of ethylene on the metabolism of plants. Ibid. 60: 193-214. 1915. 62 FLORENCE ANNA MCCORMICK A.B., University of Tennessee, Knoxville, Tennessee, 1897; M.S., 1900; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, June, 1914 ASSISTANT PROFESSOR OF AGRICULTURAL BOTANY, UNIVERSITY OF- NEBRASKA, LINCOLN, NEBRASKA Present position, 1914~-. Member, Bot. Soc. Amer. PUBLICATIONS A study of Symphyogina aspera. Bot. Gaz. 58: 401-418. 1914.—Some notes on the anatomy of the tuber of Ipomoea batatas. Ibid., in press. 63 HANNA CAROLINE AASE A.B., University of South Dakota, Vermilion, South Dakota, 1906; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, August, 1914 INSTRUCTOR IN BOTANY, WASHINGTON STATE COLLEGE, PULLMAN, WASHINGTON Present position, 1914—. Member, Bot. Soc. Amer., Sigma Xi. PUBLICATION Vascular anatomy of the megasporophylls of conifers. Bot. Gaz. 60: 277-313. 11915. JOSEPH STUART CALDWELL B.A., Maryville College, Maryville, Tennessee, 1902; M.A., The University of Chicago, Chicago, Illinois, 1904; Ph.D. (Plant Physiology and Plant Morphology), Chicago, August, 1914 BIOCHEMIST IN CHARGE OF FRUIT BY-PRODUCTS UTILIZATION INVESTIGATIONS, WASHINGTON AGRICULTURAL EXPERI- MENT STATION, PULLMAN, WASHINGTON Professor of Plant Physiology and Head of Department of Botany, Alabama Polytechnic Institute, Auburn, Alabama, 1912-1916; Alabama State Botanist, Alabama Agricultural Experiment Station, Auburn, Alabama, 1912-1916; Biochemist in charge of Fruit By- Products Investigations, Washington Agricultural Experiment Station, 1916—. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer., Botanists Cent. States, Phi Beta Kappa, Sigma Xi. PUBLICATIONS Effect of toxic agents upon the action of bromelin. Bot. Gaz. 39: 409-419. 1905.— A primer of hygiene. (With J. W. Ritchie.) 1910.—The relation of environmental conditions to the phenomena of permanent wilting in plants. Physiol. Res. 1: 1-56. 1913.—Some new conceptions of soil infertility. Proc. Alabama State Hort. Soc. 9: 44-59. 1914.—A study of antagonism. Bot. Gaz., in press. Chemical changes in the apple induced by the brown-rot fungus (Sphaeropsis malorum). Jour. Agric. Res., in press.—The evaporation of apples and berries. Washington Agric. Exp. Sta. Tech. Bull., in press. Physiological role and chemical composition of certain cactus mucilages. Bot. Gaz., in press. 65 GEORGE BURTON RIGG B.S., University of Iowa, Iowa City, Iowa, 1896; M.A., University of Washington, Seattle, Washington, 1909; Ph.D. (Plant Physiology and Plant Ecology), Chicago, August, 1914 ASSISTANT PROFESSOR OF BOTANY, UNIVERSITY OF WASHINGTON, SEATTLE, WASHINGTON Present position, 1914—. Member: Amer. Assoc. Adv. Sci. (Fellow), Bot. Soc. Amer. PUBLICATIONS Laboratory exercises in elementary botany. (With T.C.Frye.) Boston, 1909.— A method of preparing the larger algae. Plant World 8: 202. 1911.—Notes on the ecology and economic importance of Nereocystis luetkeana. Plant World 15: 84-92. 1912.—Northwest flora. (With T.C.. Frye.) Seattle, 1912.—A note on the genera- tions of Polysiphonia. (With A. D. Dalgity.) Bot. Gaz. 54: 164-165. 1912.—Eco- logical and economic notes on Puget Sound kelps. U.S. Senate Documents 190: 179-193. 1912—The effects of some Puget Sound bog waters on the root-hairs of Tradescantia. Bot. Gaz. 55: 314-326. 1913.—Is salinity a factor in the distribution of Nereocystis luetkeana? Bull. Torr. Bot. Club 42: 337-342. 1913.—The distribu- tion of Macrocystis pyrifera along the American shore of the Strait of Juan de Fuca. Torreya 13: 158-159. 1913.—Forest distribution in the San Juan de Fuca Islands. Plant World 16: 177-182. 1913.—Elementary flora of the Northwest. (With T. C. Frye.) New York. 1914.—Notes on the flora of some Alaska sphagnum bogs. Plant World 17: 167-182. 1914.—The effect of the Katmai eruption on marine vegetation. Science N. 8. 40: 509-513. 1914.—The kelp beds of Puget sound. U.S. Dept. Agric. Rept. 100: 50-59. 1915.—The kelp beds of western Alaska. Jbid. 100: 105-122. 1915.—The size of kelps on the Pacific coast of North America (With T. C. Frye and W. C. Crandall.) Bot. Gaz. 60: 473-482. 1915.—Physical conditions in sphagnum bogs. Ibid. 61: 159-163. 1916. 66 EVA ORMENTA SCHLEY S.B., The University of Chicago, Chicago, Illinois, 1908; Ph.D. (Plant Physiology and Plant Morphology), Chicago, August, 1914 ADDRESS: LOS ANGELES, CALIFORNIA Assistant in Plant Physiology, The University of Chicago, Chicago, Illinois, 1914-15. PUBLICATION Chemical and physical changes in geotropic stimulation and response. Bot. Gaz. 56: 480-489. 1913. 67 JAMES PALM STOBER B.E., First Pennsylvania State Normal School, Millersville, Pennsylvania, 1893; S.B., Bucknell University, Lewisburg, Pennsylvania, 1898; M.S., 1900; Ph.D. (Botany and Zodlogy), Chicago, August, 1914 PROFESSOR OF BIOLOGY, ALBRIGHT COLLEGE, MYERSTOWN, PENNSYLVANIA Present position, 1914—. Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer., Sigma Xi. PUBLICATIONS Laboratory studies of plants. Myerstown, Pa., 1905.—Plant descriptions. Myers- town, Pa., 1905.—A comparative anatomical study of winter and summer leaves of certain herbaceous plants. Bot. Gaz., in press. 68 HERMANN BACHER DEUTSCH S.B., The University of Chicago, Chicago, Illinois, 1910; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, June, 1915 ASSISTANT EDITOR, CIVIL SERVICE NEWS, CHICAGO, ILLINOIS PUBLICATION A study of Targionia hypophylla. Bot. Gaz. 53: 492-503. 1912.—Dissertation: The effect of light upon the germination of the spores of the true ferns. 69 JAMES FREDERICK GROVES A.B., Ewing College, Ewing, Illinois, 1906; Ph.D. (Plant Physiology and Plant Ecology), Chicago, June, 1915 ASSISTANT PROFESSOR OF BIOLOGY, UNIVERSITY OF WYOMING, LARAMIE, WYOMING Present position, 1915—. Member, Amer. Assoc. Adv. Sci. PUBLICATIONS Evaporation and soil moisture in cultivated fields. Trans. Illinois Acad. Sci. 1914. In press.—Life duration of seeds. (With W. Crocker.) Proc. National Acad. Sci.—1: 152. 1915.—A method of prophesying the life duration of seeds. Bot. Gaz. 1916. In press. 70 ANDREW HENDERSON HUTCHINSON B.A., McMaster University, Toronto, Canada, 1909; M.A. Ed., 1911; M.A. Bot., 1913; Ph.D. (Plant Morphology, Plant Physiology and Plant Ecology), Chicago, "June, 1915 ASSISTANT PROFESSOR OF BOTANY, AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS, COLLEGE STATION, TEXAS Present position, 1915—. Member: Bot. Soc. Amer., Gamma Alpha, Sigma Xi. PUBLICATIONS The male gametophyte of Abies balsamea. Bot. Gaz. 57: 148-153. 1914.—The male gametophyte of Picea canadensis. Ibid. 59: 287-300. 1915.—The gametophyte of Pellia epiphylla. Jbid., 60: 134-148. 1915.—Fertilization in Abies balsamea. Ibid. 60: 457-472. 1915.—Keteleeria fortunei, a conifer endemic of central China. Ibid., in press. 71 RACHEL EMILIE HOFFSTADT B.S., Hanover College, Hanover Indian, 1908; Ph.D. (Plant Morphology, Plant Ecology and Plant Physiology), Chicago, September, 1915 INSTRUCTOR IN BOTANY, MILWAUKEE-DOWNER COLLEGE, MILWAUKEE, WISCONSIN Present position, 1915—. Member, Bot. Soc. Amer. DissERTATION: The vascular anatomy of Piper methysticum. 72 MILLARD S. MARKLE B.S., Earlham College, Richmond, Indiana, 1910; Ph.D. (Plant Ecology, Plant Physiology and Plant Morphology), Chicago, September, 1915 PROFESSOR OF BOTANY, EARLHAM COLLEGE, RICHMOND, INDIANA Present position, 1915—. Member: Indiana Acad. Sci., Sigma Xi. PUBLICATIONS The root systems of certain desert plants. Bot. Gaz., in press.—Peat bogs in the vicinity of Richmond, Indiana. Proc. Indiana Acad. Sci., in press. 73 MABEL LEWIS ROE A.B., Vassar College, Poughkeepsie, New York, 1903; Ph.D. (Plant Morphology and Plant Ecology), Chicago, September, 1915 ADDRESS: HULL BOTANICAL LABORATORY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer. PUBLICATION The development of the conceptacle of Fucus. Bot. Gaz. 61: 231-246. 1916. 74 CHARLES ALBERT SHULL S.B., The University of Chicago, Chicago, Illinois, 1905; Ph.D. (Plant Physiology, Plant Morphology and Plant Ecology), Chicago, September, 1915 ASSOCIATE PROFESSOR OF PLANT PHYSIOLOGY AND GENETICS, ~ UNIVERSITY OF KANSAS, LAWRENCE, KANSAS Present position, 1915—. Member: Amer. Genetic Assoc., Bot. Soc. Amer., Botanists Cent. States, Ecol. Soc. Amer. National Geog. Soc. PUBLICATIONS Oxygen pressure and the germination of Xanthium seeds. Bot. Gaz. 48: 387-391. 1909.—The oxygen minimum and the germination of Xanthium seeds. Ibzd. 52: 453- 477. 1911.—Semipermeability of seed-coats. Jbid., 56: 169-199. 1913.—Luther Bur- bank and his work. Trans. Kansas State Hort. Soc. 32: 222-230. 1913.—The role of oxygen in germination. Bot. Gaz. 57: 64-69. 1914.—Physiological isolation of types in the genus Xanthium. Ibid. 59:474483. 1915—Measurement of the internal forces of seeds. Trans. Kansas Acad. Sci. 27: 65-70. 1915. 75 ARTHUR GIBSON VESTAL A.B., University of Illinois, Urbana, Illinois, 1911; Ph.D. (Botany and Zoidlogy), Chicago, September, 1915 TEACHER OF BOTANY, EASTERN ILLINOIS STATE NORMAL SCHOOL, CHARLESTON, ILLINOIS Present position, 1915—. Member: Bot. Soc. Amer., Ecol. Soc. Amer., Sigma Xi. PUBLICATIONS An associational study of Illinois sand prairie. Illinois State Lab. Nat. Hist. Bull. 10: 1-96. ' 1913.—Local distribution of grasshoppers in relation to plant associa- tions. Biol. Bull. 25: 141-180. 1913.—Internal relations of terrestrial associations. Amer.- Nat. 48: 413-445. 1914.—A black-soil prairie station in northeastern Ilinois. Bull. Torr. Bot. Club 41: 351-363. 1914.—Prairie vegetation of a mountain-front area in Colorado. Bot. Gaz. 58: 377-400. 1914——Foothills vegetation in the Colo- rado Front Range. Jbzd.,1n press. 76 SARAH LINCOLN DOUBT B.S., University of Nebraska, Lincoln, Nebraska, 1903; Ph.D. (Plant Physiology, Plant Ecology and Plant Morphology), Chicago, December, 1915 ADDRESS: HULL BOTANICAL LABORATORY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Dissertation: Response of plants to gas. 77 GEORGE KONRAD KARL LINK S$.B., The University of Chicago, Chicago, Illinois, 1910; A.M., University of Nebraska, Lincoln, Nebraska 1912; Ph.D. (Plant Physiology and Plant Ecology), Chicago, March, 1916 ASSOCIATE PROFESSOR OF AGRICULTURAL BOTANY, UNIVERSITY OF NEBRASKA, AND ASSISTANT IN BOTANY IN THE NEBRASKA AGRICULTURAL EXPERIMENT STATION, LINCOLN, NEBRASKA Dissertation: A physiological study of Fusarium in relation to potato disease. 78 EDITH ADELAIDE ROBERTS A.B., Smith College, Northampton, Massachusetts, 1905; S.M., The University of Chicago, Chicago, Illinois, 1911; Ph.D. (Plant Ecology and Plant Physiology), Chicago, March, 1916 ASSOCIATE PROFESSOR OF BOTANY, MOUNT HOLYOKE COLLEGE, SOUTH HADLEY, MASSACHUSETTS PUBLICATIONS The peg of the Cucurbitaceae. (With W. Crocker and L. I. Knight.) Bot. Gaz. 50: 321-339. 1910.—The plant successions of the Holyoke range. Ibid. 58: 432-444. 1914.—The distribution of beach plants. Ibid. 60: 406-411. 1915.—The epidermal cells of roots. Ibid., in press. 79 FRANK EARL DENNY A.B., University of Nebraska, Lincoln, Nebraska, 1906; Ph.D. (Plant Physiology, Plant Morphology, Plant Ecology and Physical Chemistry), Chicago, June, 1916 ADDRESS: HULL BOTANICAL LABORATORY, THE UNIVERSITY OF CHICAGO, CHICAGO, ILLINOIS Member: Bot. Soc. Amer., Phi Beta Kappa, Sigma Xi. DisserTATION: Permeability of certain plant, membranes. 80 ALPHAEUS WILLIAM DUPLER A.B., Juniata College, Huntingdon, Pennsylvania, 1911; Ph.D. (Plant Morphology and Plant Ecology), Chicago, June, 1916 PROFESSOR OF BOTANY (ELECT), LAWRENCE COLLEGE, APPLETON, WISCONSIN Member: Amer. Assoc. Adv. Sci., Bot. Soc. Amer. Dissertation: The gametophytes of Taxus canadensis Marsh. 81 LESLIE ALVA KENOYER A.B., Campbell College, Holton, Kansas, 1906; A.M., University of Kansas, Lawrence, Kansas, 1908; Ph.D. (Plant Heoloey Plant Physiology and Plant Morphology), hicago, June, 1916 PROFESSOR OF BIOLOGY, EWING CHRISTIAN COLLEGE, ALLAHABAD, INDIA Member: Bot. Soc. Amer., Iowa Acad. Sci., Phi Kappa Phi, Sigma Xi. DissERTATION: Environmental influences on nectar secretion. 82