INDEX TO TEE POPULAR SCIENCE MONTHLY FOE TIIE TWENTY VOLUMES FROM 1872 TO 1882, AND OF THE THREE VOLUMES OF THE SUPPLEMENT EMBRACING THE TITLES OF THE AETICLES IN THE SEVEEAL DEPARTMENTS OF THE MAGAZINE. NEW YORK : D. APPLETON AND COMPANY, 1, 8, and 5 BOND STREET. 1883. COPTRIGHT BY D. APPLETON AND COMPANY, 1882. PEEFACE. In the opening number of this magazine the object of its publi- cation is thus set forth by the editor : " ' The Popular Science Monthly ' has been started to help on the work of sound public edu- cation, by supplying instructive articles on the leading subjects of scientific inquiry. It will contain papers, original and selected, on a wide range of subjects, from the ablest scientific men of different countries, explaining their views to non-scientific people. A maga- zine is needed here, which shall be devoted to this purpose, for, although much is done by the general press in scattering light arti- cles and shreds of information, yet many scientific discussions of merit and moment are passed by. It is, therefore, thought best to bring this class of contributions together for the benefit of all who are interested in the advance of ideas and the diffusion of valuable knowledge. "The work of diffusing science is, however, as yet, but very imperfectly organized, although it is clearly the next great task of civilization. But the signs are promising. Schools of science are springing up in all enlightened countries, and old educational estab- lishments are yielding to the reformatory spirit, modifying and modernizing their systems of study. There is, besides, a growing sympathy, on the part of men of science of the highest character, with the work of popular teaching, and an increasing readiness to co- operate in undertakings that shall promote it. There is, in fact, grow- ing up a valuable literature of popular science — not the trash that caters to public ignorance, wonder, and prejudice, but able and in- structive essays and lectures from men who are authorities upon the subjects which they treat. But the task of systematically dissemi- nating these valuable productions is as yet but imperfectly executed, and we propose to contribute what we can to it in the present publi- cation." iv PREFACE. That the promise then made has been well kept, no one will ques- tion, who will familiarize himself with the contents of the twenty volumes now completed. The best efforts of the foremost thinkers and scientific workers have been given a place in its pages, and nowhere else can there be found such a complete record of the intellectual progress of the past decade. The conception of evolution as a universal pro- cess throughout all nature, to be discerned alike in the unfolding order of plant and animal life, and in the growth and progress of human society, has been presented from many points of view, and by many writers. But it is chiefly in its bearings upon human life and social development that it has found exposition in the " Monthly," and the discussion, as there presented, is of the greatest value. The bearing of science -upon education has formed the theme of many of the editorials as well as of contributed articles, while its relation to social development has received the elucidation which only the masterly pen of Mr. Spencer can give it. Science, as presented in the pages of the " Monthly," is very far from being that dry mass of details which so many people imagine it to be. It comprehends the best thought of our time in all de- partments of inquiry, and has a permanent interest and value to all thinking men. The index has been made simply a title one, as this seemed sufficient to answer all requirements. In some cases, where the title did not sufficiently indicate the subject-matter of the article, a clearer one has been substituted, the actual title being then placed in quota- tion-marks. Where the article is a contributed one, the name of the author follows it, and in their proj^er order there is given a complete list of all the authors who have appeared in the pages of the " Month- ly." The departments are in all cases indicated by the appropriate abbreviation, and for convenience of reference the book notices are placed by themselves. INDEX OF VOLUMES I TO XX A VOL. PAGE Aard-vark, or Earth-Hog. E. Oustalet xiv 572 Abbott, B. V. Copyright, Recent Advance in Law of xix 372 Copyright Law, Progress of xx 340 Explosives, Modern xx 794 Abbott, C. C. Bird-Life, Certain Phases of. ix 343 Birds'-Nests vi 481 Chipmunk, The American vii 433 Evolution going on before our Eyes (Cor.) vii 108 Birds, Migration of Inland vii 183 Thistle-Bird, Nest and Eggs of (Cor.) vi 743 Ablution, Epidemics and (Misc.) xii 639 Aborigines, Australian. G. Marcel xix 680 of Botel Tobago (Misc.) xvii 718 Aboriginal Settlements on Pacific Coast. P. Schumacher x 353 About, E. Useful Things ii 491 Absinthe and Alcohol, Action of (Misc.) vii 378 Abstraction in Science, Results of. C. T. Haviland xv 825 Academy of Sciences, National (Ed. Tab.) xviii 412 " Academy," The, Misrepresentations of (Ed. Tab.) ix 111 Acari, Mites, Ticks, and other. E. E. Leland xiv 502 Accidents, Industrial (Misc.) xix 285 Accomplishments Value of. "W. A. Eddy xviii 496 Acids, Action of Organic, on Minerals (Misc.) xvi 710 Aconite, Physiological Action of (Misc.) xv 281 Acoustics in Architecture (Misc.) xx 572 Adams, C. K. Science at University of Michigan (Cor.) xviii 123 Adder, Cunning of the (Misc.) ix 251 Addresses, The Presidential. Discussion of Evolution (Ed. Tab.) i 752 Adipose, The Impediment of. E. V. Blake xvii 60 Adler, Felix. Hebrew Religion, Evolution of. ix 589 Adulteration of Food and Drugs (Misc.) xv 286 of Drugs (Misc.) xv 575 ^Esthetic Sense in Animals. L. Viardot iv 729 2ZI b3 2 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Affection, Animal (Cor.) xvii 406 Afghanistan, Notes on (Misc.) xiv 252 Africa, Explorations in Central (Misc.) xv 283 Pinto's Trip across Southern (Misc.) xv 286 Population of (Misc.) xvi 426 Prehistoric (Misc.) xvii 287 Thompson's Journey in Eastern (Misc.) xviii 856 African Civilization, A Specimen of (Misc.) xv 803 Paces, Movements and Mixtures of (Misc.) xix 568 Tribe, A New (Misc.) xvii 802 Africans, Craniology of the (Misc.) xviii 429 Agassiz and Darwinism. John Fiske iii 692 Autopsy of (Misc.) iv 633 OUtuary (Ed. Tab.) iv 495 Alexander. Zoological Laboratory of (Misc.) xiv 834 Louis J. P., Sketch of, by R. Bliss, Jr., with Portrait iv 608 Agassiz's Successor (Misc.) iv 637 Age, Images of the American Stone (Misc.) xx 286 Agnosticism at Harvard (Ed. Tab.) xix 266 Agricultural-Experiment Station (Misc.) xii 507 School, A French (Misc.) xiv 253 Agriculture, Ancient Bavarian (Misc.) ii 759 Electricity and. Paget Iliggs xvii 664 Portuguese (Misc.) vi 378 Ague-Poison, Marsh-Water as a Vehicle of (Misc.) ix 704 Aikman, William. Explosion, A Powder-Mill. . . iv 231 Air, Effects of Compressed (Misc.) vii 122 Engine, The Mekarski (Misc.) xix 429 Foul (Misc.) ii 121 Foul, and Disease of the Heart. C. Black ii 183 Ground-, in its Hygienic Relations. Max von Pettenkofer xi 280 Impure, and Disease (Misc.) xix 283 Bad, in Courts of Justice (Ed. Tab.) ix 756 Night-, in Cities. J. R. Black (Cor.) xiii 105 of Buildings, Cooling the (Misc.) x 113 Physiological Effects of Compressed (Misc.) xix 861 Relations of the, to our Clothing. Max von Pettenkofer x 654 Relation of the, to our Houses. Max von Pettenkofer xi 196 Airy, Sir G. B. Sketch of, with Portrait iii 101 Alabama, Coal and Iron Resources of (Misc.) x 637 Eocene Strata of (Misc.) xx 566 Alarm, Electric Burglar- xviii 56 Alaska, Agricultural and Mineral Resources of (Misc.) xiii 766 Albatross, The (Misc.) vi 375 Albertite (Misc.) x 634 Albro, W. C. Law, Origin of Criminal (Cor.) xvii 121 Alchemy, Future of. C. Froebel iv 602 Alcohol a Food ? Is viii 103 Disinfection of (Misc.) xx 428 in Bread (Misc.) iv 381 Effect of, on Brain-Substance (Misc.) x 117 INDEX OF VOLUMES I TO XX. 3 VOL. PAGE Alcohol, Estimation of, in a "Watery Mixture (Misc.) x 765 Natural Production of. Gaston Tissandier xix 238 The Physiological Position of. B. "W. Richardson i 219 Alcoholic Excess and Character. J. M. Fothergill xiv 379 Aldrich, C. Tortoise, Food of the Water- (Cor.) xi 618 Algoe and the Phanerogams (Misc.) xvii 714 Algebras, Spaces, Logics. G. B. Halstead xvii 516 Algeria, Cost of the Proposed Lake in (Misc.) xvi 139 Proposed Inland Sea in. J. D. Chaiuplin, Jr viii 665 Alglave, E. Respiration of Plants vi 60 Alkaline Deposits from Waters of Irrigation (Misc.) xix 573 Alkaloids, The Cinchona (Misc.) xi 763 Allen, Grant. Birds, Esthetic Feeling in xvii 650 Dinner ? Why do we eat our xiv 799 Evolution, A Problem in Human, Loss of Hairy Covering xv 250 Evolution in Man, ^Esthetic xviii 339 Feather, Pleased with a xv 366 Fruits, Origin of. xiii 597 Geology and History xvii 495 Hyacinth-Bulbs xx 817 Lyell, Sir Charles, with Portrait xx 591 Pain, Mystery of. — A Poem (Misc.) xi 634 Spencer, To Herbert (Misc.) vii 628 Allen, N. Culture, Physiological Basis of Mental vi 183 Allbutt, T. C. Brain-Forcing xiii 217 Alligators swallowing their Young (Misc.) v 506 Allman, G. J. Protoplasm and Life xv 721 Alum, Detection of, in Bread (Misc.) i 509 in Baking-Powder (Misc.) xv 285 Aluminium, Wearing Qualities of (Misc.) xi 507 Amarantus Blitum, Saltpetre in (Misc.) iii 526 Amber, Asphalt and, in the Mud of New Jersey (Misc.) xvii 718 Asphaltum and, in New Jersey (Misc.) xv 719 Dredging for (Misc.) ix 121 America, Grote's Theory of the Peopling of (Misc.) x 764 Is South, rising or sinking? (Misc.) xvii 708 American Climate and Character (Misc.) xvii 705 Continent, The Primeval. L. P. Gratacap xix 229 Institute Fair (Ed. Tab.) xviii 127 Plants, On the Derivation of. Asa Gray i 724 Ammonia, Influence of, on Color of Flowers (Misc.) vii 254 in the Air, Origin and Distribution of (Misc.) vii 246 in Snow- Water (Misc.) ii 506 Plants and (Misc.) v 511 Amoeba, How the, takes its Food (Misc.) vi 758 Amos, Sheldon. Materials of the Science of Law v 596 Amphioxus, Professor Huxley on the (Misc.) vii 632 Amphlett, John. Genealogy xiii 583 Amulets, Cranial, Early Religious Practice. J. Bertillon vii 607 Anassthesia, Discovery of (Misc.) ix 506 Anaesthetic, A New (Misc.) xvii 424 4 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Anaesthetic, A New (Misc.) i 373 Anaesthetics and Metaphysics (Misc.) vi 638 Andaman-Islanders, Appearance and Habits of the (Misc.) xii 120 Anderson, J. Strength of Timber ii 582 Anderson, Sir James. Ocean-Cables jii 38 Andrews, L. II. Form of Lightning-Rods (Oor.) vii 746 Andrews, L. AV. Continuity, Law of (Cor.) xii 495 Andrews, William. Axe, Battle-, A Stone (Cor.) ix 612 Anecdote, Anatomy of an Old. W. W. Billson xx 369 Anemones, Sea-. S. Lockwood vii 1 Animal and Vegetable Kingdoms. T. II. Huxley viii 641 Forms, Dallinger's Study of Minute (Misc.) xii 122 Intelligence (Misc.) xvii 287 Life in Madagascar vii 738 Mounds in the Pyrenees (Misc.) xvi 135 Movements, Marey's New Results in. A. M. Mayer vi 444 Movements, Nervous Control of. Onimus i 344 Parasites and Messmates viii 670 Plant and, Life, Analogies of (Misc.) xiii 509 Powers of Offense and Defense ix 355 Transformations, New Views of. E. Perrier xvi 625 Animalcule, Tenacity of Life in the Wheat- (Misc.) vii 253 Animals, iEstlietic Sense in. L. Viardot iv 729 and Fire-Arms (Misc.) v 507 and Plants, Difference between. W. K. Brooks xiv 30 and Steam-Engines (Misc.) x 632 Color in v 470 Conscience in. G. J. Romanes ix 80 Diseases of Wild. J. Vilain xvi 11 Distribution of Color in (Misc.) xii 761 Effects of Petting (Misc.) xix 135 Expectant Attention in (Misc.) xviii 285 Extinct in the Historic Period. E. Blanchard v 331 Faculty of Direction in (Cor.). Le Roy F. Griffin xvii 692 Faculty of Direction in (Cor.). George Chahoon xviii 122 Gradual Disappearance of the Larger (Misc.) xix 280 How, breathe. II. L. Fairchild xx 448, 742 Journeyings and Dispersal of x 576 Legal Prosecutions of. W. Jones xvii 619 Mental 1 Hsease in (Misc.) xi 639 not Automata. R. G. Hazard vi 405 or Plants ? (Misc.) xviii 430 Reversion of Domesticated, to the Wild State (Misc.) xx 716 Sensitive Organs of Deep-Sea (Misc.) xviii 575 Wild, as Man's Associates. E. S. Morse xx 528 Antarctic Expedition, An (Misc.) xviii 431 Antelope, Natural History of the American (Misc.) ix 378 South African River (Misc.) xx 427 Anthony, W. A. Heat-Engines, Possible Efficiency of xvii 831 Anthropological Society, German (Misc.) xviii 425 Anthropologists, Congress of German (Misc.) ix 120 IXDEX OF VOLUMES I TO XX. 5 VOL. PAGE Anthropology and Archasology, International Congress of Prehistoric, xviii 544 Anthropology and Ethnology. Definition and Relation of (Ed. Tab.). . . . i 498 German (Misc.) six 132 in Germany (Misc.) xi 764 in Russia (Misc.) xix 284 Progress of. T. H. Huxley xiii 668 Recent. E. B. Tylor xvi 145 Study of (Misc.) xix 862 Anthropometric Observation (Misc.) xvi 431 Antioch, Rebuilding of (Misc.) iv 126 Antipodes and Perioeci. H. Butterworth ii 489 Antiquities, Peruvian (Misc.) xiv 835 Antiquity of Man (Misc.) xvi 140, 572 of Man (Misc.) xvi 140 of Man (Misc.) iv 759 of Man (Misc.) iii 255 of Man. A. De Quatrefages i 208 of Man in America (Misc.) ii 638 Antiseptic, A New vii 680 Properties of Borax (Misc.) ii 381 Antiseptics and Infusorial Life (Misc.) vii 253 Antlers of the Deer, Growth and Reproduction of the (Misc.) vi 251 Ant, Agricultural (Misc.) xiii 123 Community, History of an (Misc.) xiv 248 Intelligence (Misc.) xv 860 The Cutting (Misc.) xvii 717 Ants, L. C. Fisher (Cor.) xviii 696 " An Imported Sovereign " (Misc.) xv 860 " Our Six-footed Rivals " xii 196, 349 Ability of, to stand Great Extremes of Temperature (Misc.) xii 763 Anent. E. R. Leland vii 257 Cutting and Slave-making (Misc.) xix 129 Feeding Habits of Wood-. E. M. Hale (Cor.) xi 104 Fierce Battle between (Misc.) xiv 121 Foray of an Army of (Misc.) x 117 Habits of. Sir J. Lubbock xi 39 How, distinguish Each Other (Misc.) xiii 638 Intelligence of. George J. Romanes xix 495, 816 Nest (Misc.) xiv 693 Nest, Sympathy in an (Misc.) xv 572 Sir J. Lubbock on the Habits of (Misc.) ix 252 Slave-making (Misc.) xvii 424 Social Relations of (Misc.) iii 520 The Slaves of (Misc.) xii 116 "Wood-, Singular Feeding Habits of (Misc.) x 634 Apes, Studies of Young (Misc.) xviii 426 Apoplexy. J. R. Black vi 705 Appalachian-Mountain Club (Misc.) xi 382 Apparatus, Scientific (Ed. Tab.) v 498 Apparitions, Illusions and (Misc.) xvii 571 Appleton, George S., The Late (Ed. Tab.) xiii 497 6 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Appleton, T. G. Vine-Slip, Only a xviii 539 Apprentice-Schools in France (Misc.) xvi 285 Aquaria, Distribution of Water in (Misc.) vii 126 Aquarium, Balance of Life in. S. Hibbard i 434 The. W. E. Simmons, Jr v 687 The New York (Ed. Tab.) x 234 Aqueducts xi 26 Arabian Desert, Central (Misc.) xvii 281 Arabic Numerals, Origin and Curiosities of the x 736 Arachnidan, A Formidable (Misc.) xii 254 Arago's Statue, Inauguration of xvi 114 Ararat, Ascent of Mount (Misc.) xiii 381 Archaeological Congress at Tiflis (Misc.) xx 572 Discoveries, Recent German (Misc.) xx 712 Question, An. W. S. Beebe (Cor.) xx 403 Researches in the Great American Bottom (Misc.) xiii 506 Archaeologists, Congresses of German and Austrian (Misc.) xx 571 Archaeology (Misc.) xi 639 American and European (Misc.) xv 712 International Congress of Prehistoric Anthropology and xviii 544 Japanese (Misc.) xv 141 North American (Misc.) xiii 510 Archasopteryx, Carl Vogt on the (Misc.) xvi 136 Archer- Fisher's Mode of capturing Prey (Misc.) xiv 406 Archer-Fishes, The. E. Sauvage xii 302 Architecture, Acoustics in (Misc.) xx 572 Arctic Expedition, British (Misc.) x 379 Expedition, Naturalist's Report of the British (Misc.) x 511 Exploration, Balloon in (Misc.) xiv 837 Exploration, Perils of (Misc.) x 637 Ice-Travels. C R. Markham vii 468 Regions, Winter-Quarters in the (Misc.) x 766 Research (Misc.) viii 762 Argan-Tree of Southwest Morocco (Misc.) xv 569 Aristocracy, Science, Education, and iv 480 Arithmetic, Early Methods in. E. O. Vaile xvi 204 Armadillos, Gigantic Extinct. J. A. Rider xiii 139 Armsby, H. P. Lamp, The Bunsen xx 378 Muscular Power, The Source of xv 812 Army-Worm Moth (Misc.) ix 380 Arnold, A. Conservation of Force (Cor.) vii 229 Force and Motion (Cor.) vi 499 Matter, Force, and Inertia (Cor.) iv 494 F. Medicine, The Romance of ii 422 Arnott, Dr. N. Sketch of, with Portrait x 100 Arrow-Heads in New Jersey (Misc.) i 253 Arsenic, Detection of, in Organic Matter (Misc.) ix 637 In Kindergartens. George Hay (Cor.) xvi 694 In the Household and School (Misc.) xvi 715 Physiological Effects of (Misc.) xv 139 Art, A Relic of Ancient Etrurian (Misc.) iii 780 INDEX OF VOLUMES I TO XX. 7 VOL. PAGE Art, Evolution and Originality in (Ed. Tab.) xviii 097 Frailty of Modern (Misc.) viii 379 The Monstrous in. S. Kneeland xiv 731 Artesian Wells and Sahara. S. Schroeder xvi 530 On our Western Plains (Misc.) xvii 428 Artisan Schools, Government Aid to (Misc.) xv 140 Artisans, Diseases of (Misc.) vii 510 Arts in the Stone Age ii 343 The Royal Institution and the Society of. B. H. Becker vi 655 Asbestos, Uses of (Misc.) ii 509 Ashes, Leached, as a Fertilizer (Misc.) iv 509 Ashman, J. Beans, Pythagoras on (Cor.) xv 410 Asphalt and Amber in the Mud of New Jersey (Misc.) xvii 718 Origin and Uses of. L. Malo xix 539 Pavements ii 609 Asphaltum and Amber in New Jersey (Misc.) xv 719 Deposit in West Virginia (Misc.) iv 637 Association, Adv. Sci., American, 1872 (Misc.) i 637 Adv. Sci., American, 1872 (Ed. Tab.) i 752 Adv. Sci., American, 1873 (Ed. Tab.) iii 762 Adv. Sci., American, 1874 (Ed. Tab.) v 741 Adv. Sci., American, 1875 (Misc.) vii 755 Adv. Sci., American, 1876 (Ed. Tab.) ix 755 Adv. Sci., American, 1877 (Misc.) xi 505, 762 Adv. Sci., American, 1878 (Ed. Tab.) xiii 745 Adv. Sci., American, 1879 (Ed. Tab.) xv 842 Adv. Sci., American, 1879 (Misc.) xv 853 Adv. Sci., American, 1880 (Ed. Tab.) xvii 693, 843 Adv. Sci., American, 1881 (Misc.) xix 422, 859 Adv. Sci., American. F. W. Clarke (Cor.) vii 365 Adv. Sci., American, Geographical Distribution of Members (Cor.) xx 267 Association, Adv. Sci., British, 1872 (Misc.) i 637 Adv. Sci., British, 1872 (Ed. Tab.) i 752 Adv. Sci., British, 1873 (Ed. Tab.) iv 114 Adv. Sci., British, 1877 (Misc.) xi 505 Adv. Sci., British, 1878 (Ed. Tab.) xiii 745 Adv. Sci., British, 1879 (Ed. Tab.) xv 842 Adv. Sci., British, 1880 (Misc.) xviii 138 Association, Adv. Sci., French, 1873 (Misc.) iv 124 Adv. Sci., French, 1875 (Misc.) viii 248 Adv. Sci., French, 1876 (Misc.) x 115 Adv. Sci., French, 1877 (Misc.) xi 505 Adv. Sci., French, 1880 (Misc.) xviii 141 Adv. Sci., French, 1881 (Misc.) xix 423 Association of German Naturalists and Physicians (Misc.) xx 574 Asteroids, Professor Vaughan on the Origin of the (Misc.) xv 570 Astronomical Achievement, an American. R. A. Proctor x 446 Discoveries, Announcement of (Misc.) xvi 715 Discoveries, Further (Ed. Tab.) xi 756 Expedition, The Sherman. Emma M. Converse iii 72 History of Worlds. D. Vaughan xiii 571 8 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Astronomical Magnitudes and Distances. H. S. Carhart xiv 291 Observations on the Rocky Mountains (Misc.) xi 123 Astronomy in America. R. A. Proctor x 75 In High-Schools. E. A. Bo wen xx 300 Origin of (Misc.) ix 124 Atheism, Reply to Charges (Ed. Tab.) v 365 and the Church. G. H. Curteis xiv 621 Charging Scientific Men with (Ed. Tab.) xi 367 Atheistic, Science not (Ed. Tab.) xvii 124 Athletics in Schools xvi 677 Atkinson, "W. P. Education, Liberal, of the Nineteenth Century iv 1 Atlantis. A. R. Grote (Cor.) xvi 266 Atlantis not a Myth. E. H. Thompson xv 759 Atmosphere, Acoustic Properties of (Misc.) v 252 as an Anvil. J. P. Cooke, Jr v 220 in Relation to Fog-Signaling. J. Tvndall vi 541, 685 of the Sun (Misc.) i 251 Atmospheric Currents and Carbonic Acid (Misc.) xvii 421 Dust. Gaston Tissandier xvii 344 Moisture, Distribution of vii 483 Pressure and Life. Paul Bert xi 316 Pressure and Vegetable Growth (Misc.) ii 700 Pressure, Effect of, on Life (Misc.) ii 382 Atom, Address to an (Misc.) vi 639 Atoms (Misc.) i 245 Atropia, Antidote to (Misc.) vii 382 Atteridge, A. H. Gunpowder, Manufacture and Conveyance of vi 717 Telegraph, The Field v 303 Aubrey-Vitet, M. E. Sewer- "Waters, Purification of xviii 806 Audiometer, The (Misc.) xv 571 Audubon's Lily rediscovered. S. Lockwood x 675 Aurelius, Marcus. Calvert Vaux. xi 461 Aurora Borealis (Misc.) xiii 508 Aurora, Cause of the (Misc.) ix 638 Australia, Tribes of Western (Misc.) vii 764 Authorship, Physiology of. R. E. Francillon vii 93 Automata, Animals not. R. G. Hazard vi 405 Automaton, A Human (Misc.) vi 253 Automatons? Are Animals. T. H. Huxley v 724 Axe, Battle-, A Stone. W. Andrews (Cor.) ix 612 Axes and Hatchets, Ancient and Modern. A. Rigg ix 186 Axon, W. E. A. Physiological Position of Tobacco ii 167 Aztecs, Backgammon among the. E. B. Tylor xiv 491 B Babies, Study of (Ed. Tab.) ix 241 Bachelor, A. "W. Electrical Nuisance, An (Cor.) xx 843 O. R. Chameleon, Observations on the xv 178 Backgammon among the Aztecs. E. B. Tylor xiv 491 Bacteria and their Effects. L. A. Stimson vi 399 as Destroyers of Insects. E. Ray Lankester xvii 93 INDEX OF VOLUMES I TO XX. 9 VOL. PAGE Bacteria, Diffusion of (Misc.) xvii 860 in Healthy Animals (Misc.) xvi 572 Baer, Karl Ernst von, Death of (Misc.) x 638 Bagehot, Walter. Early Discipline of Mankind ii 129 Sketch of, with Portrait xii 489 Bain, Alexander. Civil Service, Language, and the English xii 152 Classical Controversy, The xv 631 Education as a Science x 418, 513, xi 391, xiii 302, 661, xiv 55, 152 Ethics, Spencer's Data of xvi 210 Mill, John Stuart xiv 697, xv 327, 750, xvi 25, 311, 501 on Education (Ed. Tab.) x 620, xiii 370 Sketch of, with Portrait ix 360 Will, Growth of the xv 10 Baird, H. M. Glaciers of Norway vii 458 Baking-Powder, Alum in (Misc.) xv 285 Balance, The Hughes Induction (Misc.) xvi 141 Ball, John. Transcontinental Explorations, Early (Cor.) ix 493 Ball, R. S. Time, A Glimpse through the Corridors of xx 479 Balloon Ascent, Disastrous (Misc.) vii 245 in Arctic Exploration (Misc.) xiv 837 Balloons and Carrier-Pigeons (Misc.) viii 765 Bancroft, H. H. Savagism and Civilization vii 195, 332 Banks, Savings, and State Control (Ed. Tab.) xii 238 Barbarism, Lingering. Carl Vogt xviii 638 Barker, George F. Life-Question, Modern Aspects of the xvii 750 Sketch of, with Portrait xv 693 Barnard, F. A. P. Mental Phenomena— a Correction (Ed. Tab.) ii 243 Ode to ii 622 Scholastic Exercises in Colleges, Compulsory Attendance on (Cor.), iii 235 Science and our Educational System ii 695 Sketch of, with Portrait xi 100 Barnard, W. S. Education, Zoological xvii 666 Micro organisms xv 764 Opossums and their Young viii 149 Barnett, S. Metric Reform xiii 82 Barton, B. W. A Case of Protective Mimicry (Cor.) xviii 262 Baryta, The Uses of (Misc.) iv 638 Bastian, II. C. Brain, Nature of the Invertebrate ix 702 Brain, Nature of the Invertebrate x 27 Evolution and the Origin of Life iv 713 Living Matter, Death- Point of. v 695, vi 185 Organisms and their Media ix 215 Sketch of, with Portrait viii 108 Bath, Physiology of the Turkish (Misc.) xvi 283 Professor Hebra on Use of the (Misc.) xi 634 Baths, Cold-Water (Misc.) xv 567 Bathybius and the Moners. E. Haeckel xi 641 Professor Huxley on (Misc.). xv 862 Bats and their Young. B. G. Wilder vii 641 Bats, Geographical Distribution of (Misc.) xv 574 Bats? What are. St. George Mivart ix 523 io THE POPULAR SCIENCE MONTHLY. VOL. PAGE Battaille, J. F. Tortoise, American Hairy (Cor.) xiv 530 Battery, New Form of (Misc.) xiii 765 Baumhauer, E. H. von. Teredo, and its Depredations xiii 400, 545 Bayles, G. Cremation and its Alternatives v 225 Beadle, J. H. Social Experiments in Utah ix 479 Beans, Pythagoras on. J. Ashman (Cor.) xv 410 Beard, George M. Coincidence, A Remarkable xv G28 Electricity, Atmospheric, and Ozone iv 456 Human Beings, Experiments with Living xiv 611, 751 Jumpers of Maine xviii 170 Mind-Reading hy the Ear (Cor.) xi 362 Mind-Beading, Physiology of x 459 Testimony, Scientific Study of Human xiii 53, 173, 328 Bears. W. E. Simmons, Jr vi 281 Beaver, Sagacity of the (Misc.) xiv 123 Beavers in Colorado (Misc.) xii 766 Becker, B. H. Royal Institution, The, and the Society of Arts vi 655 Beckwith, 1ST. M. Centennial, Awards at the ix 69 Bedding in Sleeping-Cars (Misc.) ix 764 Bee, Lessons from the Tongue of the (Misc.) xvii 422 Sting of the Honey- xiv 635 Beehe, W. S. Arckasological Question, An (Cor.) xx 403 Beecher, Rev. H. W. The Study of Human Nature i 327 Scandal, The (Ed. Tab.) vii 619 Bee Habits, Fritz Milller on (Misc.) v 759 Sting, Prevention of the Effects of (Misc.) vii 765 Beer (Misc.) xvii 280 Condensed (Misc.) viii 250 Economy of (Misc.) iv 760 Process for Condensing (Misc.) ix 379 Bees, Sense of Hearing in (Misc.) x 121 Duration of the Flight of (Misc.) xii 119 Perception of Color by (Misc.) vii 250 Bees' Wings, Uses of (Misc.) iv 763 Beet, Sugar-, Seed Production of (Misc.) x 122 Culture, Experiments in (Misc.) viii 764 Beetle, The Carpet- (Misc.) xvii 287 Beetle, The Grave-Digger (Misc.) xiv 126 Beetle, The Strawberry-Leaf (Misc.) xviii 852 Behring Strait, Geological Features of (Misc.) xix 130 Bell, Alexander G. Photophone, The xvii 813, xix 186, 324 Bellesme, M. J. de. Insects, Direction of Flight by xvii 114 Bellows, Henry W. Obituary Notice (Ed. Tab.) xx 700 Bells of Steel Bars (Misc.) vi 252, 381 Belt, Thomas. Glacial Period, Man and the xii 61 Death of (Misc.) xiv 255 Benevolence, Genesis of. P. Friedmann xiii 735 Bennett, A. II. Hygiene in Higher Education of Women xvi 519 A. W. Plants, Spontaneous Movements in ii 280 Bennett's Polar Expedition (Ed. Tab.) xv 557 Bergh and the Sparrows (Ed. Tab.) xv 412 IXDEX OF VOLUMES I TO XX. n VOL. PAGE Bergh, Henry. Sparrows, The English (Cor.) xv 409 Berghaus, A. Leech, The Medicinal xvii 478 Bernard, Claude. Functions of the Brain ii 64 Sketch of, with Portrait xiii 742 Bernstein, J. Eye, Observing the Interior of the ix 684 Bert, Paul. Atmospheric Pressure and Life xi 316 Nerves, Transmission of Excitations in Sensory xi 230 Bertillon, J. Amulets, Cranial, Early Religious Practice vii 607 Bessemer Process, Spectroscope in (Misc.) iii 254 Beule, M. How was Herculaneum destroyed ? ii 232 Bevington, L. D. Teachings of a Day (Poem) xii 327 Biblical Criticism, The Science of (Ed. Tab.) xix 408 Bigelow, A. Longevity, Antediluvian (Cor.) xx 843 W. S. Frost Phenomena (Cor.) xvi 842 Billson, W. W. Anecdote, Anatomy of an Old xx 369 Law, Origin of Criminal xvi 433 Biological Inquiry, Modern. J. L. Le Conte viii 285 Science and Medicine. T. H. Huxley xix 795 Biology and Sociology. J. Le Conte , xiv 325, 425 and Woman's Rights xiv 201 Cook, Rev. Joseph, and his (Ed. Tab.) xii 495 for Young Beginners. S. H. Stevenson vi 340 574 in Common Schools (Ed. Tab.) x 615 in Public Schools (Misc.) xx 713 Modern Philosophical. E. Cazelle viii 595 710 On the Study of. T. H. Huxley x 527 Progress of American (Ed. Tab.) xii 624 Study and Teaching of. H. N. Martin x 298 Bird, A Hoarding (Misc.) iii 655 An Interesting. J. H. Kidder viii 657 or Reptile— which ? H. O. Forbes xiii 719 Poison- Proof (Misc.) ii 766 Reasoning (Misc.) xvi 139 -Life, Certain Phases of. C. C. Abbott ix 343 Birds, ^Esthetic Feeling in. Grant Allen xvii 650 Can, converse ? (Misc.) vii 505 Destruction of, by Telegraph-Wires (Misc.) x 766 Destruction of, in United States (Misc.) x 636 Do, improve in Nest-building? J. Fitzgerald ii 485 Eggs and Nests (Misc.) xiii 124 English and American (Misc.) xviii 142 Intellectual Powers of iii 614 Jurassic, and their Allies. O. C. Marsh xx 312 Migrations of (Misc.) viii 761 Migration of Inland. C. C. Abbott vii 183 Nests. C. C. Abbott vi 481 Notss on a Few of our. H. Merrill xvii 386 of Paradise. J. H. Partridge v 556 Our Native, acquiring New Habits (Misc.) ii 633 Reptilian Affinities of (Misc.) viii 124 Singular Powers in (Misc.) xviii 853 12 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Birds, Soaring and Sailing of (Misc.) v 253 Timidity of (Misc.) ix 637 Vertebral Articulations in (Misc.) xiv 832 Birgham, F. Meteoric Stones, Organic Remains in xx 83 Bixby, J. T. Science and Religion as Allies ix 690 Black, Cornelius, M. D. Foul Air and Disease of the Heart ii 183 J. R. Air, Night, in Cities (Cor.) xiii 105 Apoplexy vi 705 Disease, Removal of Inherited Tendencies to xv 433 Health, Open Air and (Cor.) xii 494 Sanitary Science, Applied ii 6G5 Black-Death in Egypt (Misc.) vi 638 in New England. II. Butterworth iii 28 Black Hills, Flora of (Misc.) v 760 Blackwell, A. B. Growth and Reproduction v 606 Sexes, Equality of the (Cor.) ix 362 Blake, E. V. Adipose, The Impediment of. xvii 60 Crime, Spontaneous and Imitative xv 656 Blanchard, Emile. Animals extinct in the Historic Period v 331 Voice in Man and in Animals ix 385, 513 Blandford, George F. The Physiology of Emotion i 274 Bleaching Preparation, New (Misc.) xvi 861 Blood and its Circulation. H. L. Fairchild xix 460, 644 Historical Sketch of the Discovery of the Circulation of the. G. J. Fisher xi 294 Local Temperatures of the (Misc.) xii 252 -Spots on Food (Misc.) ii 249 Transfusion of (Misc.) ii 124 Toxic Action of Putrid (Misc.) ix 635 Blindness and its Causes (Misc.) xiv 838 Word- (Misc.) xx 570 Blue-Glass (Ed. Tab.) xi 109 Blunders, Legislative (Misc.) v 510 Bodily Conditions and Mental States. C. F. Taylor xv 40 Body and Brain, Size of xvi 826 Temperature of, in Health (Misc.) i 247 Boiler Explosions, New Theory of (Misc.) iii 650 Probable Cause of (Misc.) ii 757 Boiler Incrustations, Remedy for (Misc.) viii 126 Bolas, Thomas. India-rubber Industries xvii 802 Bolton, H. C. Filtration, Ancient Methods of xvi 495 Medicine, Early Practice of, by Women xviii 191 Bond, Thomas. Laws of Health x 198 Bone-black, Purification of (Misc.) iii 397 Bone-Caves in Pennsylvania (Misc.) xviii 707 Bongos, Food of the (Misc.) vi 766 Bonneville, Ancient Outlet of Lake (Misc.) xvii 855 Bonney, C. C. Spencer a Cure for Skepticism (Cor.) xi 487 Bookbinding, Deterioration of, by Illuminating Gas (Misc.) xvii 143 Boole, George. Sketch of, with Portrait xvii 840 Borax, Antiseptic Properties of (Misc.) ii 381 IXDEX OF VOLUMES I TO XX. 13 VOL. PAGE Borers of the Sea, The iii 60 Boring Organ of Pholades (Misc.) ii 253 Boston " Ladies' Deposit," Lessons of the (Ed. Tab.) xix 698 Meeting American Association for Adv. of Sci. (Ed. Tab.) xvii 843 Boston Monday Lectureship, The (Ed. Tab.) xviii 556 Botanical Science, Development of (Misc.) xiii 119 Botanic Garden for Chicago (Misc.) vii 254 Botanist of the Ninth Century, A. C. Hartwich xx 523 Botany, Tennyson and. J. Hutchison iv 193 Bowel-Complaints, High Temperatures and (Misc.) xi 507 Bowen, E. A. Astronomy in High-Schools xx 300 Bowlders of the Long Island Drift (Misc.) i 757 Boyd, David. Science and the Logicians ix 224 Brachiopoda, Systematic Position of the (Misc.) vi 510 Brackett, William. Science and Literature xv 166 Brain, A Low Mammalian (Misc.) xii 124 and Body, Size of xvi 827 and Mind (Misc.) iv 253 Bulk and Intelligence (Misc.) xiv 551 Cells, Education of. J. M. Granville xvi 200 Circulation of Blood in the (Misc.) xx 718 Development in the Mammalia (Misc.) v 638 Dupuy on the Functions of the (Misc.) v 505 Experiments on the Living (Misc.) vi 376, xv 855 -Forcing. T. C. Allbutt xiii 217 Functions of the. Claude Bernard ii 64 Injury, Curious Effects of a (Misc.) i 635 Injury, Survival of Serious, in a Pigeon (Misc.) xiv 694 Location of Sensory Centers in the (Misc.) viii 381 Nature of the Invertebrate. H. C. Bastian ix 702, x 27 Ee-education of the Adult. W. Sharpey xv 455 -Substance, Effect of Alcohol on (Misc.) x 117 -Texture and Mental Make-up (Misc.) xvi 143 The Study of the (Ed. Tab.) xiii 237 The Unconscious Action of. W. B. Carpenter i 544 Weight and Intelligence (Misc.) ix 254 Work and the Emotions ii 420 Brame, C. E. Zodiacal Light xi 349 Bramwell, F. J. The Practical Man as an Obstructive ii 37 Brandy, Production of Cognac x 428 Bread, Detection of Alum in (Misc.) i 509 Breath, Temperature of the (Misc.) xvii 855 Temperature of the (Misc.) xviii 708 Brewer, T. M. Museums of Europe xi 472 W. H. Discovery of Mount Tyndall ii 739 Brick, Materials found in an Egyptian (Misc.) i 633 British, Ancestors of the (Misc.) viii 122 British Association (see Association for the Advancement of Science, British). Fiftieth Meeting (Misc.) xviii 138 Papers (Misc.) xii 117 Physical Characters of the (Misc.) viii 505 2 i4 THE POPULAR SCIENCE MONTHLY. VOL. PAGE British Association, Scientific Expedition (Misc.) ii 509 Broca, Paul. Sketch of, with Portrait xx 261 Troglodytes, or Cave-Dwellers of France ii 699 Brooks, W. K. Animals and Plants, Difference between xiv 30 Feather, A iv 686 Instinct and Intelligence ... xi 585 Women, Condition of, from a Zoological Point of View xv 145, 347 M. "W. Cricket, Influence of Temperature upon Chirp of the (Cor.) xx 268 Brownell, T. F. Notation, Curious Systems of xiii 420 Thought, Time required for xi 564 Browning, "W". Eating, A Question of xv 345 Brunton, T. L. Nervous Depression, Indigestion as a Cause of. . xviii 226, 374 Eefiex Action and Disease xiv 639 Brush, G. J. Sketch of, by T. R. Lounsbury, with Portrait xx 117 Bryant, C. S. Education, State — a Necessity xix 635 Life, Duration of Human (Cor.) xx 553 Buchan, J. M. Climate and Complexion xvii 1 Buchanan, J. G. Deep-Sea Investigation xix 59 J. R. Psycho-Physiological Sciences xi 721 Buckland, F. Crane, Natural Trumpet of the ix 137 Hippopotamus and her Baby iii 85 Horned Frog, The ii 676 Prairie-Dog, African ' xvi 318 Sketch of. S. Walpole xviii 812 Buckley, A. B. Life, The Profusion of xviii 96 Bucknill, J. C. Mental Physiology v 705 Swift's Disease, Dean xx 806 Buell, C. J. Law, Origin of Criminal (Cor.) xvi 842 Buffalo and his Fate. E. Ingersoll xvii 40 Destruction of the (Misc.) ix 377 Field Club (Ed. Tab.) xix 265 Meeting of the American Association for the Advancement of Sci- ence (Ed. Tab.) ix 755 Building-Stone and Fire (Misc.) ii 639 of St. Lawrence County, New York xii 255 System of Philadelphia (Misc.) xi 510 Buildings, Prevention of Damp in (Misc.) xx 712 Bulb-Cultnre in Holland (Misc.) ii 381 Bunbury, C. Geysers, New Zealand xv 356 Bunce, O. B. Commercial Distress, Cause of (Cor.) xi 615 Consumption, Over-, or Over-production xi 306 Bunsen, R. W. Sketch of, with Portrait xix 550 Burial-Caves, Indian (Misc.) xx 711 Burials, Extreme Rarity of Premature. William Lee xvii 526 Premature. G. E. Mackay xvi 389 Burns and Scalds, Soda a Remedy for. F. Peppercorne xx 663 E. S. Chronology, History of . . . , xviii 760 J. Steam-Navigation, Dr. Lardner and Transatlantic (Cor.) xiv 529 Butter, Artificial (Misc.) ii 126 Butter, Artificial (Misc.) vi 122 INDEX OF VOLUMES I TO XX. 15 VOL. PAGE Butterflies, Conditions controlling Sex of (Misc.) iii 252 Butter-making, Improvements in (Misc.) xvi 571 in Denmark and Sweden (Misc.) xvii 859 Butterworth, II. Antipodes and Perioeci ii 489 Black Death in New England iii 28 Mental Faculties, Strange, in Disease viii 177 Relic, A Gigantic v 94 Transit of Venus i 719 c Cables, A New Enemy of Submarine (Misc.) viii 507 Ocean-. Sir J. Anderson iii 38 Cactus as a Lava-Breaker (Misc.) xiii 511 Caffeine, Physiological Action of (Misc.) i 253 Cairnes, J. E. Social Evolution vi 604 Suffrage, Woman, as affecting the Family vi 87 on Social Evolution (Ed. Tab.) vi 616 Calculating Boy (Misc.) xiv 835 Calculating Machine, A New (Misc.) xiii 761 Calendar, The Javanese. J. A. C. Oudemans xx 820 California, Kearney Agitation in. Henry George xvii 433 Northerly Winds of (Misc.) x 119 Old River-Beds of Middle (Misc.) xvi 858 Calmucks, Characteristics of the. J. Kopernicki i 419 Calvin, R. S. Coal, A Piece of xviii 610 Camel, American Pedigree of the (Misc.) viii 124 Cameron's Explorations (Misc.) ix 381 Campos, Life and Nature in the (Misc.) xix 133 Canal, Gulf Stream and Panama. J. Geikie xx 665 Our Policy respecting the Panama (Ed. Tab.) xx 273 Routes, Interoceanic. C. de Fourcy xvi 380 The Panama (Ed. Tab.) '. xvi 842 Canarians, Religion of the (Misc.) viii 249 Candle-Fish, The (Misc.) xiv 546 Cannibals, South African (Misc.) xvi 286 Canniff, William. Fermentation and Putrefaction (Cor.) x 742 Canine Sagacity x 202 Cannon, Steel-Bronze (Misc.) xi 632 Canon, The Unaweep. H. Gannett xx 781 Canons, Colorado, Formation of the (Misc.) x 252 Caoutchouc, Mineral (Misc.) xii 508 -yielding Trees, Cultivation of (Misc.) x 126 Capacity, Measures of Mental. J. W. Redfield v 72 Capuchins, Convent of the. A. Searle xvi 673 Car-Axles, Failure of (Misc.) iii 125 Carbolic Acid from Plants (Misc.) i 766 Carbon Button, The. E. A. Engler xvii 10 Carbonic Acid, Atmospheric Currents and (Misc.) xvii 421 Elimination of, by the Skin (Misc.) iii 251 Gas in Deep-Sea Water (Misc.) xx 428 in the Sea (Misc.) xviii 862 16 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Carboniferous Strata, Constitution of (Misc.) iv 508 Cardiff Giant, and other Frauds. G. A. Stockwell xiii 197 Carhart, H. S. Astronomical Magnitudes and Distances xiv 291 Electricity, Atmospheric xviii 513 Tides, The (Cor.) xi 610 Caribbean Sea, The Deep Valley of the (Misc.) xviii 287 Cariel, C. W. Compressed-Air Locomotive in St. Gothard Tunnel x 473 Carlisle, Lord Bishop of. God and Nature xvii 27 Carlyle and the Darwins. R. M. K. Ormsby (Cor.) x 362 Carp, An Aged (Misc.) ii 250 Carpenter, F. D. Y. Map Review, A , xx 225 Carpenter, W. B. Delusions, Epidemic ii 15 Force behind Nature, The xvi 614 Germs, Disease- xx 244 Hereditary Transmission of Acquired Mental Habits iii 303 Limestone, On a Piece of viii 165 Man as the Interpreter of Nature i 684 Mesmerism and Spiritualism xi 12, 161 Sketch of, with Portrait i 745 Supernatural, Fallacies of Testimony respecting the viii 570 - Unconscious Action of the Brain i 544 Carpenters, About. M. Mauris xvii 233 Carpet-Beetle (Misc.) xiii 634 Carrier-Pigeons, Balloons and (Misc.) viii 765 Car- Wheels, Paper (Misc.) ii 762 Castor-Oil, Use of, in the Arts (Misc.) xii 511 Catastrophism, Clarence King on (Ed. Tab.) xi 491 Caterpillars, An Army of (Misc.) ii 255 Carnivorous (Misc.) xiv 121 in Philadelphia (Misc.) iv 381 Catholicism and Eternal Punishment (Ed. Tab.) xiii 368 Catskill Mountains (Misc.; xvii 568 Cattle, Cross between the Zebu and European (Misc.) ii 635 Wild, of Great Britain (Misc.) xvi 138 Cautery with White-hot Metal (Misc.) v 762 Cave-Dwellers in America, The Age of. E. T. Elliott xv 488 Cave, Exploration of Victoria (Misc.) ix 125 Explorations (Misc.) i 378, vii 246 Habitations in Kentucky (Misc.) viii 125 in Algeria, Discovery of a Remarkable (Misc.) xv 717 Scientific Exploration of Mammoth. II. C. Ilovey (Cor.) xx 403 The Mammoth (Misc.) xx 284 Cazelle, E. Biology, Modern Philosophical viii 595, 710 Celluloid, Composition and Uses of (Misc.) xvi 859 Cell-Theory in Physiology, Huxley on (Misc.) vi 634 Cemeteries and Health. M. G. Robinet xix 657 Sanitation of (Misc.) xx 422 Centenarians, Physical Condition of (Misc.) i 253 Centennial, A Chemical (Ed. Tab.) v 240 Awards at the. N. M. Beckwith ix 69 Celebration. Features of our Progress (Ed. Tab.) v 237 INDEX OF VOLUMES I TO XX. i7 VOL. TAGE Centennial Exhibition, New Method of Awards (Ed. Tab.) is 106 Exposition, Prehistoric Belies at (Misc.) ix 508 History and the (Ed. Tab.) viii 629 Retrospect of our Past One Hundred Years (Ed. Tab.) viii 630 Sunday at the (Ed. Tab.) ix 364 Century-Plant, A Precocious (Misc.) xvi 575 Cephalization, Professor Dana on (Misc.) x 632 Cerebellum, Functions of the (Misc.) xii 119 Ceremonial Government, Evolution of. Herbert Spencer : I. Introductory xii 385 II. Trophies xii 545 III. Mutilations xii 641 IV. Presents xiii 25 V. Obeisances xiii 146 VI. Forms of Address xiii 292 VII. Titles xiv 17 Ceremonial Institutions, London " Times" on (Ed. Tab.) xvii 125 Chahoon, George. Animals, Sense-Direction in xviii 122 "Water-Supply of Eivers xiii 288 Chairs, Science of Easy- xiv 186 Challenger Collection, The (Misc.) x 763 Cruise of the (Misc.) ix 630 Expedition of. Deep-Sea Exploration iii 257 Expedition of. T. H. Huxley vii 26 Chamberlain, C. Lapland, Nature and Life in x 450 Chameleon, Observations on the. O. R. Bacheler xv 178 Chameleons — Their Habits and Color-Changes. J. Fitzgerald vi 526 Champlin, Jr., J. D. Marbles, Antique xi 67 Sea, Proposed Inland, in Algeria viii 665 Chandler, C. F. Sketch of, with Portrait xvi 833 Change as a Mental Restorative (Misc.) xviii 285 Chapman, George W. Sun-Spot Periods (Cor.) xi 488 Character, American Climate and (Misc.) xvii 705 and Climate, American. E. C. Towne xx 109 Influence of Chemical Research on (Misc.) xiii 764 Chasles, Michel. Sketch of, with Portrait xviii 840 Cheadle, W. B. The Early Superstitions of Medicine i 95 Chemical AfBnity, A New Theory of (Misc.) xviii 717 Centennial, Photography and the (Ed. Tab.) vi 115 Elements, Evolution of the. L. F. Ward xviii 526 Elements, Lockyer on (Ed. Tab.) xiv 533 Exercises for Ordinary Schools. E. A. Youmans xvii 522 Research, Influence of, on Character (Misc.) xiii 764 Theory (Misc.) vi 758 Chemistry (Misc.) vii 761 and Medicine. Ira Remsen xv 214 Celestial. T. S. Hunt vi 420 Changes in Views of (Ed. Tab.) vii 490 Future of. F. W. Clarke vi 276 Geometrical. G. Hinrichs (Cor.) ix 613 of the Rocks. C. C. Merriman iv 694 18 THE POPULAR SCIENCE MONTHLY. , VOL. PAGE Chemistry, Science vs. The Art of. Ira Remsen x 091 Synthetic. J. W. Langley v 39 Eelations of, to Pharmacy and Therapeutics (Misc.) viii 501 The New, a Development of the Old. M. M. P. Muir xvii 393 Chesapeake Laboratory, Zoological Work at the (Misc.) xvi 570 Child, A. L. Olfactory Nerves (Cor.) xvii 692 " Popular Science Monthly " (Cor.) xv 698 Development of Language in a. II. Taine ix 129 Childhood, First Three Years of xiv 591 Children, Hygiene of .New-born (Misc.) xvii 715 in Utah, Health of (Misc.) viii 381 Status of Women and. Herbert Spencer xi 433 Chimborazo and its Climbers (Misc.) xvii 714 Chimpanzee, Grief in a (Misc.) xv 142 Chinese, American Origin of (Misc.) vii 509 Civilization, Origin of (Misc.) xvii 856 Civilization, Stability of (Misc.) viii 509 Fishing (Misc.) xi 251 Immigration. G. L. Lansing xx 721 Morality among the (Ed. Tab.) xvi 270 Women, Compression of the Feet of (Misc.) xvii 712 Chipmunk, The American. C. C. Abbott vii 433 Chloral and other Narcotics. B. W. Richardson xv 491, 646 Chloroform. C. Richet xii 738 Consciousness under. Herbert Spencer xiii 694 Deaths from (Misc.) xi 254 Cholera, Diffusion of (Misc.) viii 761 in Central Europe (Misc.) iii 523 Origin of (Misc.) i 381 Chromis Pater-Familias, The. Dr. Lortet ix 322 Chromosphere and Solar Prominences. C. A. Young iv 385 Chronology, History of. E. S. Burns xviii 760 Church, Atheism and the. G. II. Curteis) xiv 621 Cinchona Alkaloids, The (Misc.) xi 763 Cinchona-Cultivation in California (Misc.) xv 861 Cinchona- Forests of South America. II. S. Welcome xvii 507 Cinchona in Bengal (Misc.) ii 381 Cincinnati Meeting of American Association (Misc.) xix 859 Circulation, Changes of the, during Mental Activity. C. S. Minot. . . . xvii 303 City, A Fabled Eastern (Misc.) xvi 427 City, The, as a Residence (Misc.) ii 250 Civilization, American Influence in (Ed. Tab.) xiii 495 Ancient American (Misc.) ix H8 and Morals. J. N. Larned xi 549 and Religion, Seelye on (Ed. Tab.) xi 621 and Science. Emil Du Bois-Reymond xiii 257, 385, 529 Antiquity of (Misc.) ii 631 as Accumulated Force. L. Dumont i 002 Printing, and the Perpetuity of Modern (Misc.) xiv 685 Relics of an Ancient Malayan (Misc.) v 123 Savagism and. H. H. Bancroft vii 195, 332 INDEX OF VOLUMES I TO XX. *9 , VOL. PAGE Civil Service, Language, and the English. Alexander Bain xii 152 Clairvoyance, Mr. Wallace and (Ed. Tab.) xii 745 Clarke, F. C. Hypnotism, Experiments on ix 211 F. "VV. Association, American, for Advancement of Science (Cor.), vii 365 Chemistry, Future of vi 276 Colleges, American, versus American Science ix 467 Educational Literature, Specimens of (Neophogen College) xi 713 Education, The Higher vii 402 Elements, Are the, elementary ? viii 463 Evolution and the Spectroscope ii 320 Fire, My (Poem) xvii 321 Ignorance, Advantages of. xviii 337 Laboratory Endowment x 729 Scientific Dabblers i 594 Study, Scientific Courses of xiii 187 Classical Controversy, The. Alexander Bain xv 631 Studies. T. Green (Cor.) xvii 552 Classics as a Preparation for English. Spencer's Criticism of Matthew Arnold (Ed. Tab.) iii 642 English in Place of. By a Scotch Graduate i 707 in Germany (Ed. Tab.) xiii 623 in the English Universities, Freeman on the (Ed. Tab.) xiv 819 The, that educate Us. P. R. Shipman xvii 145 Clay in Drift (Misc.) iii 126 in the Long Island Drift (Misc.) ii 634 Porcelain- (Misc.) vii 760 Cleopatra's Needle (Misc.) xi 380 Cleve, M. J. Forest-Culture in Alpine Ravines xix 830 Clifford, W. Kingdon. Aims and Instruments of Scientific Thought, ii 93, 174 Catastrophe, First and Last vii 268 on Virchow and Haeckel (Ed. Tab.) xiii 244 Sketch of, with Portrait xv 258 Climate, A Curious Winter (Misc.) vi 511 and Character, American. E. C. Towne xx 109 and Character, American (Misc.) xvii 705 and Complexion. J. M. Buchan xvii 1 and Complexion (Misc.) xvii 279 and Forests. F. L. Oswald xi 385 and Health (Misc.) xix 567 and Time, Croll on. E. Lewis, Jr vii 719 and Time, CrolPs. W. J. McGee xvi 810 at Great Altitudes (Misc.) xv 426 Has our, changed ? D. Draper i 665 Influence of Water on (Misc.) viii 507 Climatology of Europe (Misc.) xviii 716 of New Zealand (Misc.) ix 119 Clocks, Pneumatic Regulation of (Misc.) xii 251 Clothing, Relations of the Air to our. Max von Pettenkofer x 654 the Young (Misc.) ix 122 Cloud, J. W. Forces, Wasted (Cor.) xv 698 Clough, J. Phrenology, The Old and the New (Cor.) xv 265 20 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Clough, J. Spiritual Phenomenon, A, accounted for (Cor.) xv 699 Cluss, A. Pavements, Modern Street vii 80 Coal and Iron Resources of Alabama (Misc.) x 637 A Piece of. Pv. S. Calvin xviii 610 as a Reservoir of Power. R. Hunt i 738 Deposits in New York State (Misc.) viii 761 Dust, Explosive Force of (Misc.) xx 425 -Fields of China (Misc.) iv 250 Gas, Effects of, on Plants (Misc.) ii 638 Gas, Purification of (Misc.) i 503 in California (Misc.) vi 757 Lands of the Rocky Mountains (Misc.) i 632 -Mine Explosions. F. R. Conder xv 200 -Mines, Prevention of Fires in (Misc.) x 763 -Mining, Compressed Air in (Misc.) xii 638 of the Future (Misc.) xv 856 Production of the World (Misc.) xx 138 Spontaneous Combustion of (Misc.) xx 717 -Supply, Pennsylvania (Misc.) ix 507 Utilization of Waste (Misc.) iii 778 Weather-Waste of (Misc.) i 374 Coan, T. M. Prehistoric Times i 101 Coast-Survey Measurements (Misc.) vii 759 The Work of (Misc.) i 763 Coati-Mondi and its Cousins. S. Lockwood ii 136 Cobb, D. A. Lightning, Mechanical Power (Cor.) vii 488 Cobra-Poison, Action of (Misc.) vii 766 Coca, Physiological Action of (Misc.) x 127, 251 Cochineal Cactus, Culture of the (Misc.) ix 636 Cockroach, The Florida (Misc.) x 759 Cocoa, Nutritive Value of (Misc.) vii 380 Cocoa- Nut Palm and its Uses. C. R. Low ii 214 Coffee and Tea, Chemistry of. A. B. Prescott xx 359 Physiological Effects of (Misc.) xvii 853 Coffin, James H. Sketch of, with Portrait iii 503 Cohn, IT. Eyes and School-Books xix 54 Coinages, The Debasement of. E. R. Leland xii 580 Coincidence, A Remarkable. George M. Beard xv 628 Cold, Catching (Misc.) vi 636 in Industrial Chemistry (Misc.) xvii 858 Meats cooked by (Misc.) x 125 Waves, Movements of (Misc.) x 124 in the Head, Remedy for (Misc.) x 117 Snaps, Causes of (Misc.) ?i 632 What is a ? xviii 801 College Education. Professor Winchell on (Misc.) xiv 248 College of City of New York (Ed. Tab.) xiii 106 College of City of New York (Ed. Tab.) xvi 695 Colleges, American vs. American Science. F. W. Clarke ix 467 Colleges, Compulsory Attendance on Scholastic Exercises in. F. A. P. Bar- nard (Cor.) hi 235 INDEX OF VOLUMES I TO XX. 21 VOL. TAOB Colleges, Science in the (Ed. Tab.) xviii 126 Scientific Teaching in the (Ed. Tab.) xvi 556 Self-Government in (Cor.). W. L. C. Stevens xix 697 Collier, D. C. Grasshoppers' Ravages, Western (Cor.) ix 749 Color, The Constants of. O. N. Rood ix 641 in Anima's v 470 in Animals (Misc.) xii 761 in Flowers (Misc.) xix 717 Colorado, Ancient Rnins of (Misc.) xii 120 Marvine's Survey of Western (Misc.) vi 750 Miuing in (Misc.) xvii 287 Valley, Physical Features of. J. W. Powell vii 385, 531, 670 Color-Blindness (Misc.) xiii 120 S. R. Koehler xix 91 Frequency of (Misc.) xi 250 and Education of the Color-Sense (Misc.) xix 567 Hereditary (Misc.) xix 423 of Seamen (Misc.) xvi 285 Tests for (Misc.) xx 859 Color-Sense among Uncivilized People (Misc.) xix 138 Education of the (Misc.) xvi 425 in Savages (Misc.) xv 715 Coloring Matter in Blood (Misc.) iii 251 of the Waters in Seas and Lakes (Misc.) xvii 706 Colors, Arsenical (Misc.) vii 126 Goethe's Theory of. John Tyndall xvii 215, 312 Reproduction of Ancient (Misc.) v 764 Simultaneous Contrast of (Misc.) xii 118 The Contrast of. O. 1ST. Rood xiv 1 Colton, G. H. Springs, Spouting (Cor.) xix 554 Combe, Autobiography of George. E. A. Youmans xv 109 Combustion under Pressure (Misc.) ii 634 Comet b, 1881, Constitution of (Misc) xx 427 Biela's (Misc.) ii 762 Coggia's (Misc.) v 637 Comets. A. N. Skinner xix 790 and Meteoric Streams. D. Kirkwood ... i 335 of 1843 and 1880 (Misc.) xvii 714 Tails of (Misc.) : ii 383 Tails of (Misc.) xx 860 What becomes of ? (Misc.) i 246 Commercial Distress, Cause of. E. R. Leland (Cor.) xi 489 Cause of. O. B. Bunce (Cor.) xi 615 Manias (Ed. Tab.) x 371 Complexion, Climate and. J. M. Buchan xvii 1 Compressed Air, Effects of (Misc.) vii 122 Effects of, on Animals (Misc.) x 120 in Coal-Mining (Misc.) xii 638 Locomotive in St. Gothard Tunnel. C. M. Gariel x 473 Conant, W. C. Fuel, Water as, Fuel Gas xvi 653 Conder, F. R. Explosions in Coal-Mines xv 200 22 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Condensed Milk in England. Edward Lankester iii 466 Condiments, Physiological Influence of. Professor Voit i 701 Conductivity, Influence of Heat upon Electric (Misc.) si 123 Conglomerate, Long Island (Misc.) i 632 Conifera, Fossil (Misc.) viii 638 Consanguineous Marriages and Idiocy (Misc.) i 250 Conscience in Animals. G. J. Romanes ix 80 Is, primitive ? "W. Wilkinson xiv 647 Place of, in Evolution. T. W. Fowle xiii 513 Consciousness after Decapitation (Misc.) i 252 under Chloroform. Herbert Spencer xiii 694 Constellation, Past and Future of a. C. Flammarion iv 291 Consumption and Climates (Misc.) xviii 284 Is, contagious ? (Misc.) viii 250 Over,- or Over-Production. O. B. Bunce xi 306 Telegraph Operators and (Misc.) xv 716 Consumptives, California for (Misc.) xiv 836 Continent, The Growth of a (Misc.) xv 280 Continents, Old. A. C. Ramsay iii 573 Continuity, Law of. George lies xii 29 Law of (Cor.) xii 623 TV*. L. Andrews (Cor.) xii 495 Convent of the Capuchins. A. Searle xvi 673 Converse, Emma M. Polar Explorations, Recent vii 320 Sherman Astronomical Expedition iii 72 United States Naval Observatory iv 704 Convulsions, Epidemic. D. "W. Yandell xx 498 Cook, Joseph, and his Biology (Ed. Tab.) xii 495 on Virchow and Haeckel (Ed. Tab.) xiii 243 Cooke, J. P., Jr. Atmosphere, The, as an Anvil v 220 Knowledge, Nobility of v 610 Radiometer, The xiii 1 Scientific Culture vii 513 Sketch of, with Portrait x 491 Cookery and Education (Ed. Tab.) xiii G20, 748 Cooking (Misc.) xii 760 Cooking-Utensils, Poisonous (Misc.) x 252 Cool, How to keep (Misc.) xiv 549 Cooley, Le Roy C. Molecular Theory xv 462 Co-operation in England. George lies xvii 742 Cope, E. D. Correction of his Biography (Cor.) xx 267 Sketch of, with Portrait xix 110 Copernican Theory, Evolution and the (Ed. Tab.) x 236 Copper, Are the Salts of, poisonous ? (Misc.) xi 511 Determination of (Misc.) ~. . . xi 251 in Plants and Animals (Misc.) i 253 -Mines of Isle Royal, Ancient. N. II. Winchell xix 601 " " " C. A. Trowbridge (Cor.) xx 122 Moss- (Misc.) xi 637 "Welding (Misc.) ii 382 Copyright and Morality (Ed. Tab.) xiv 530 IXDEX OF VOLUMES I TO XX. 23 VOL. PAGE Copyright Commission, Huxley before the English xiv 106 Spencer before the English xiv 290, 440 Tyndall before the English xiv 39 Conant on International (Ed. Tab.) xvi 697 English Report on International (Ed. Tab.) xiii 618 International (Ed. Tab.) x 746 Law, Progress of. B. V. Abbott xx 340 London " Times " on International (Ed. Tab.) xv 265 Matthew Arnold on (Ed. Tab.) xvii 121 Recent Advance in Law of. B. V. Abbott xix 372 "Wilkie Collins on International (Ed. Tab.) xvii 554 Concrete Construction (Misc.) ix 509 Conrad, V. L. Storms, Blasius's Theory of ix 294 Corals and Coral Architecture. E. Lewis, Jr i 257 Living. W. E. Damon xii 737 Rate of Growth of (Misc.) vii 036 Rate of Growth of. xviii 719 Cork, Ancient Uses of (Misc.) xvi 429 Cornwall, H. B. Petroleum ix 140 Corona, Light of the Sun's (Misc.) xiv 405 Corpulence. W. J. Youmans i 445 Cortambert, E. Meridian, Selecting a First xv 156 Corundum iv 452 Cotton-Culture in Egypt (Misc.) xi 121 Cotton-Fibers and Fabrics. Dr. Sacc ii 161 Cotton-Worm, Investigating the (Misc.) xiv 406 -Worm Investigation (Misc.) xvii 853 Habits of the (Misc.) vi 757 Coues, Elliott. Imagination xi 455 Counting by Aid of the Fingers. J. Trowbridge xii 430 Cow's-Milk, Fungi in (Misc.) i 636 Cox, Sir George W. Horses and their Feet xviii 468 Coxe, Bishop, and Huxley (Ed. Tab.) x 107 Crabs. S. Lockwood v 191 " Cram," Jevons on (Ed. Tab.) . xi 239 Crane, Natural Trumpet of the. F. Buckland ix 137 T. F. Folk-Lore, Plantation xviii 824 Thomas S. Paradox, The Ball- x 725 Crania, Quatrefages on Human (Misc.) iii 779 Cranial Measurements (Misc.) viii 503 Craven, E. R. Heat, The New Philosophy of (Cor.) ix 363 Crawfish from Mammoth Cave, Habits of Blind (Misc.) viii 379 Crayfish for Study. E. O. Gastman (Cor.) xvii 405 The. E. Ray Lankester xvi 789 Where to find the (Misc.) xvii 135 Creation," Sedgwick on the " Vestiges of (Ed. Tab.) xiii 242 Creations, World-. C. C. Merriman x 701 Cremation (Misc.) iv 760 among North American Indians (Misc.) vi 254 and its Alternatives. G. Bayles v 225 in Italy (Misc.) xx 422 24 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Cremation of Dr. C. F. Winslow (Misc.) xi 765 Progress of (Misc.) xix 277 Creosote as a Timber-Preserver (Misc.) xiii 382 Cricket, Influence of Temperature on the Chirp of the. M. W. Brooks (Cor.) xx 2C8 Crime, Causes of. H. Seymour ii 589 Education and (Misc.) xi 380 Relations of Women to. E. Van De Warker viii 1, 334, 727 Spontaneous and Imitative. E. V. Blake xv 656 Criticism, Premature (Misc.) vii 124 Criticisms corrected. Herbert Spencer : I. — Tait and Kirkman xvii 795 II.— T. E. Cliffe Leslie xviii 101 III. — Guthrie and Birks xviii 387 Criticisms, Replies to. Herbert Spencer iv, 295, 402 Crocodile, Habitat of the (Misc.) ix 124 Chronology, Need of a New (Misc.) v 379 Crookes, William. Electric Illumination iii 584 Light, Mechanical Action of. vii 683, ix 257 His Character and Standing (Misc.) i 126 Radiant Matter xvi 13, 157 Sketch of, with Portrait x 739 Crosby, Howard, D. D. Introduction to LeifchihTs " The Great Problem " ii 182 Crotch, W. D. Lemming, Norwegian, and its Migrations xi 404 Crows, A Flock of Mythological. W. II. Gardner xviii 43 Crustacean, A New Fossil (Misc.) viii 124 Crystalline and Molecular Forces. J. Tyndall vi 257 Crystallization of Gold, Silver, etc. T. J. Gregan xiv 434 Cryptograph, The (Misc) iv 125 Culture, Methods of Physical (Misc.) vii 636 Physiological Basis of Mental. N. Allen vi 183 Prenatal and Infantile. E. Seguin x 38 Science and. T. H Huxley xviii 159 Scientific. J. P. Cooke, Jr vii 513 Cumings, E. Women, Education as an Aid to the Health of xvii 823 Curteis, G. H. Atheism and the Church xiv 621 Curtiss, L. R. Molecular Dynamics xiv 373 Molecular Magnitudes xi 653 Cyclone, A Miniature (Cor.) xviii 264 in the Universe. J. Mackintosh vii 209 of 1870, The Great Bengal. C. Dambeck xii 192 Cyclones, Belt's Theory of (Misc.) v 504 Cynicism opposed to Progress. W. A. Eddy xix 78 Czermak, Joseph. Obituary (Ed. Tab.) iv 115 Hypnotism in Animals iii 618, iv 75 D Daiby, W. B. Knowledge, First-hand and Second-hand xvi 197 Dallinger, W. II. Spontaneous-Generation Controversy ix 448 Daly, 0. P. Earth, How the, was explored in 1870 x C53 Geographical Exploration, Recent xvii 171 INDEX OF VOLUMES I TO XX. 25 VOL. PAGE Daly, C. P., Geographical Progress, Kecent ix 37 Maps and Map-making before Mercator xvi 478 Daly's Address before the Geographical Society (Ed. Tab.j ix 108, xvi 560 Dambeck, 0. Cyclone of 1876, The Great Bengal xii 192 Damon, W. E. Corals, Living xii 737 Devil-Fish and its Relatives xiv 345 Damposcope, The (Misc.) xvii 282 Dana, James D., Honors to (Misc.) i 253 Sketch of, with Portrait i 362 Darwin, An Estimate of. Asa Gray v 475 and Haeckel. T. H. Huxley vi 592 Cambridge Degree of LL. D. to (Ed. Tab.) xii 363 C. Inheritance six 663 Sketch of, with Portrait ii 497 Testimonials to (Misc.) xi 121 versus Galiani. E. Da Bois-Eeymond xiv 409 F. Plants, Climbing xvii 635 George H. Development in Dress ii 40 Darwinism, Agassiz on. John Eiske hi 692 and Divinity. L. S i 188 by Descent (Misc.) vii 253 Dangers of sv 68 " The Nation " on German (Ed. Tab.) viii 235 What it means (Misc.) iii 654 Darwins, Carlyle and the. R. M. K. Ormsby (Cor.) x 363 Davis, E. W. Magnetic Observatory at Madison, Wisconsin xii 455 J. B., Death of (Misc.) xx 570 L. B. River Hydraulics (Cor.) vi 236 W. M. Obituary (Ed. Tab.) xiii 625 Nebulas, Formation of xiii 339 Davy, Sir Humphry. Sketch of, with Portrait xiv 813 Dawson, J. W. Science and Religion x 72 Sketch of, with Portrait viii 231 Daylight in the School-Room. M. Javul xvi 517 Dead, Disposal of the. Sir H. Thompson iv 592 by American Aborigines (Misc.) xi 638 Ownership of the. The Ouibord Case (Ed. Tab.) viii 367 S. B. Ruggles viii 322 Deaf, The Horace Mann School for the. M. G. Morrison xix 84 Death, Fear of (Cor.) xv 123 New Test of (Misc.) xi 254 Phenomena of. T. D. Spencer xix 394 Physiology of. F. Papillon iii 270 Real and Apparent. W. Fraser xviii 401 De Candolle, A. Disease, Alternations in the Intensity of. iv 569 Decorations for English Scientists (Ed. Tab.) iv 244 De Costa, B. F. Glacial Man in America xviii 31 Deems, C. F. Reply to Ms Criticism of Huxley (Ed. Tab.) x 616 Religion ? What constitutes (Cor.) ix 239 Science and Religion viii 434 Science, Warfare of (Cor.) viii 627 26 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Deep-Sea Bottom (Misc.) vi 634 Fauna (Misc.) xx 285 Deer-Horns, Evolution of (Misc.) xx 859 Degeneracy, Physical, Causes of. A. K. Gardner i 482 Degeneration. A. Wilson xix 218, 382 Defense, Offense and, Animal Powers of ix 355 Definitions (Cor.) xi 366 Deformity, Fashion in. W. H. Flower xvii 721 De Fourcy, C. Interoceanic Canal Routes xvi 380 Delauney, G. Sex, Equality and Inequality in xx 184 Delpech, Dr. Diseases of Children, Infectious and Contagious xvii 249 Delusions, Epidemic. W. B. Carpenter ii 15 Demonism, Hysteria and. C. Richet xvii 86, 155, 377 Demonomania, An Epidemic of Hystero- (Misc.) xviii 851 Denning, W. F. Meteors, The August xviii 178 Dental Art among the Japanese (Misc.) iii 250 Plates, New Material for (Misc.) iv 507 Deposit," Boston " Ladies1, Lessons of the (Ed. Tah.) xix 698 Descent of Man (Misc.) iv 251 Deschanel, A. P. Electric Telegraph iii 401 Desert, Split-Stones in the (Misc.) xviii 569 The Colorado. J. F. James xx 384 Development, One-sided (Misc.) vii 764 Rate of Animal. J. W. Slater xvii 254 Devil-Fish and its Relatives. W. E. Damon xiv 345 Deville, M. Sainte-Claire (Sketch of, with Portrait) xx 543 Dexter, R. Facial Angle, The , iv 587 Diamond-Cutting. A. C. Hamlin viii 206 Fields, Labor at the South African (Misc.) ix 378 Diamonds, Artificial xvii 259 (Misc.) xiv 687, xvi 716 Black. M. F. Maury xiv 337 Production of Artificial (Misc.) xvii 861 Remarkable (Misc.) iii 251 Diarrhoen, The Weather and Summer (Misc.) xix 426 Dicotyledonous Plants, Species of (Misc.) v 254 Dietetic Curiosities. F. L. Oswald xiv 721, xv 30 Differences of Things. J. W. Saxon xii 53 Digest, How Animals. II. L. Fairchild xvii 600 Digestion, Recent Observations of Stomach- (Misc.) xii 123 Sleep and (Misc.) vii 628 Digestive Agent, a Vegetable (Misc.) xix 574 Dinner ? Why do we eat our. Grant Allen xiv 799 Diphtheria, Dampness and (Misc.) xvii 281 Origin of (Misc.) xix 284 -Poison, Nature of (Misc.) sx 714 Direction, Faculty of (Misc.) iii 521 Disease as a Mental Stimulant xv 71 Blondeau on the Causes of (Misc.) yi '61 Circulating Libraries and Contagious (Misc.) xvi 138 Conservative Design of Organic. A. F. A. King vii 160 INDEX OF VOLUMES I TO XX. 2J VOL. PAGE Disease, Cultivating (Misc.) xiv 250 ? Do Stenches cause (Misc.) xviii 856 Fermentation and. John TyndaU x 129 Mental Aspects of Ordinary. J. M. Fothergill vi 5G2 Propagation of (Misc.) i 509 Reflex Action and. T. L. Brunton xiv G39 Removal of Inherited Tendencies to. J. R. Black xv 433 Sir William Gull on the Nature of (Misc.) i 122 Strange Mental Faculties in. H. Butterwortk viii 177 Temperature in (Misc.) ii 763 The Seeds of (Misc.) xv 426 Water as a Remedy for (Misc.) xvii 854 Diseases, Alternations in the Intensity of. A. De Candolle iv 569 and the Weather (Misc.) xix 275 Heredity in Nervous. E. Dupuy xi 332 of Children, Infectious and Contagious. Dr. Delpech xvii 249 Prevention of Contagious (Misc.) xiii 381 Disinfectant, an Efficacious (Misc.) ii 760 A New (Misc.) xix 138 Heat as a (Misc.) vi 381 Vegetation as a (Misc.) vii 380 Disinfection and Disinfectants. W. Eassie i 55 Careless (Misc.) ii 122 of Streets and Sewers (Misc.) xiii 250 Distillery, A Solar (Misc.) x 759 Diving, Fleuss's New, Apparatus (Misc.) xvi 711, xvii 575 Divining-Rod, Antiquity of the (Misc.) viii 123 Divisibility of Gold and other Metals. A. E. Outerbridge, Jr xi 74 Dog-Story, A Pretty Big. J. Sundberg (Cor.) xi 488 Dog's Affection, A (Misc.) xv 572 Dogs, Muzzling (Misc.) v 764 Origin of Domestic (Misc.) xvii 420 Sagacity of x 202 Social Feeling in (Misc.) vii 507 Dolmens in Japan. E. S. Morse xvi 593 Domestic Economy, Improved (Ed. Tab.) xiv 395 Retrospect and Prospect. Herbert Spencer xi 513 Dove, H. W. Sketch of, by F. Hoffmann, with Portrait xvi 261 Draper and his Critics (Ed. Tab.) vii 230 Daniel. Has our Climate changed ? i 665 J. W. Evolution xii 175 Obituary Notice (Misc.) xx 569 Oxygen Gas, Priestley's Discovery of v 385 Eumford Medal to ix 290 Science and Religion vi 227 Science, English and American ii 734 Science in America x 313 Sketch of, with Portrait iv 361 H. N. Eucalyptus in the Roman Campagna xix 94 Draper's Book at Rome. " Conflict between Religion and Science " (Ed. Tab.) x 106 28 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Draper's Book on Science and Religion. E. R. Leland (Cor.) ix 613 Dreams and Dream-making. J. Mortimer Granville xx 4G1 Philosophy of (Misc.) ix 766 Drechsel, E. Physiological Chemistry xx 512 Dredging on the New England Coast (Misc.) ii 764 Dress, Development in. G. H. Darwin ii 40 in Relation to Health. B. W. Richardson xvii 182 Drift, Clay in (Misc.) iii 126 Drift-Deposits of the Northwest. N. H. Winchell iii 202, 286 Drilling Rocks by Electricity (Misc) xv 573 Drinking- AY ater from Agricultural Lands. J. A. Judson xiv 44 Drinking? What is Moderate (Misc.) xi 252 Drone, E. S. Action of Sunlight on Glass v 67 Drops, Behavior of, Falling on a Plate. A. M. Worthington xi 544 Prince Rupert's. W. Leighton, Jr viii 315 Drowned, Burying the Souls of the (Misc.) xix 573 Resuscitation of the (Misc.) viii 251 Drowning Accidents (Misc.) xii 510 How to prevent. H. MacCormac xix 369 Pain in. R. S. Tracy xiii 93 Drunkard, Body Temperature of the (Misc.) ix 507 Dry-Rot in Timber xv 525 Duane, Alexander. War and Population (Cor.) x 614 Du Bois-Reymond, E. Civilization and Science xiii 257, 385 529 Darwin vs. Galiani xiv 409 Nature, Limits of our Knowledge of v 17 Problems, The Seven World- xx 433 Sketch of, with Portrait xiii 360 Du Bois-Reyrnond's Address on Civilization and Science (Ed. Tab.). . . . xiii 369 Du Camp, Maxime. Humanity and Insanity ii 218 Duckworth, D. Milk, Insufficient Use of xix 491 Dumas, Jean Baptiste Andre. Sketch of, by A. W. Hoffmann, with Por- trait xviii 257 Dumont, L. Civilization as Accumulated Force i 602 Ilartmann's Philosophy of the Unconscious ii 152, 311 Dunant, M. Pyrophone, The vii 444 Dunbar, C. M. Post and Telegraph and International Relations xix 101 Dupuy, E. Heredity in Nervous Diseases xi 332 Dust, A Shower of. D. Kirkwood (Cor.) xvii 553 P. F. Lyons (Cor.) xviii 263 Atmospheric. Gaston Tissandier xvii 344 Explosions from Combustible. L. W. Peck xiv 159 of the Universe (Ed. Tab.) v 626 Dyeing, Influence of Physical Structure on Processes of (Misc.) xix 570 1 )yer, T. F. T. Will-o'-the-Wisp and its Folk-Lore xix 67 Dynamite, Clearing Land with (Misc.) xiii 120 Safe Manufacture of (Misc.) xix 286 Dynamo-Machines and Electro-Motors, Improvements in (Misc.) xviii 280 Dyspepsia, The Causes of. A. Leared i 75 INDEX OF VOLUMES I TO XX. 2g E VOL. PAGE Eagle, The Booted (Misc.) viii 249 The Harpy (Misc.) xiii 250 Ear-Disease, Bathing as a Cause of (Misc.) xiii 634 Ear, Hygiene of the. James Hinton iii 139 Earth-Beds, Frost-formed (Misc.) xix 572 Earth-Building, Agency of Plants in (Misc.) xvi 713 Earth, Faye's Theory of the Crust of the (Misc.) xviii 574 Geologic History of the. C. H. Hitchcock iv 513 How the, was regarded in Old Times. C. Flammarion x 542 How the, was explored in 1876. C. P. Daly x 553 Interior of the. R. Radau xvii, 289, 453 Is its Rotation uniform ? (Misc.) vi 250 is weighed, How the. Otto Walterhoffer xix 743 The Shape of the (Misc.) xv 857 Earthquake- Waves, Measurement of. G. Forbes i 586 of November 18, 1878 (Misc.) xv 139 -Phenomena. E. Lewis, Jr ii 513 -Scare in North Carolina (Misc.) xiii 635 Earthquakes and their Causes. J. J. Lake vii 732 in England (Misc.) xix 282 in Japan (Misc.) xii 507 M. Delaunay's Theory of (Misc.) xviii 855 Mental Effect of xix 257 Recent (Misc.) vii 377 Systematic Investigation of (Misc.) xvii 429 Earth's Axis, Shifting of the (Misc.) xii 118 Crust, Cooling and Contraction of the (Misc.) iv 255 Crust, Secular Changes of Level in the (Misc.) xix 715 Rotation, Retardation of the (Cor.) vi 743 Surface, Elevation and Subsidence of the (Misc.) ii 766 Earth-Worms and their Wonderful Works. W. H. Larrabee xx 289 in Agriculture (Misc.) xii 510 E. P. Powell (Cor.) xv 124 Eassie, William. Disinfection and Disinfectants i 55 Eat, How Animals. H. L. Fairchild xvii 224 To, and to be Eaten. C. Morris xx 609 Eating, A Question of. W. Browning xv 345 Eccle3, R. G. Materialism, Radical Fallacy of xiii 354 Echoes in Buildings (Misc.) xvii 141 Eclipse of the Sun. R. A. Proctor i 17 Recent Solar (Misc.) xiii 663 Economic Statistics of the World (Misc.) xiv 691 Eddy, W. A. Accomplishments, Value of xviii 496 Cynicism opposed to Progress xix 78 Sense, Evolution of a New xvi 66 Edison, T. A. Sketch of, by G. M. Shaw, with Portrait xiii 487 Edison's Telephonic and Acoustic Inventions. G. B. Prescott xiv 129 Educated to Death (a Mother's Story) vi 57 Education (Ed. Tab.) ii 750 Aims of Scientific. Reply to " The Nation " (Ed. Tab.) iii 639 3 3° THE POPULAR SCIENCE MONTHLY. VOL. PAGE Education and Crime (Misc.) xi 380 and Invention (Misc.) vi 637 as a Hindrance to Manual Occupations. S. P. Thompson xviii 26 as a Science. Alexander Bain : x 418, 513, xi 391, xiii 302, 660, xiv 55, 152 Bain on (Ed. Tab.) x 620 Barbarism in English. E. E. White ii 671 Claims of Science in (Ed. Tab.) viii 112 Coercion in (Ed. Tab.) ii 623 Demands of Modern (Misc.) vi 635 Expensiveness of Scientific (Ed. Tab.) vii 746 for Guidance. Chambers's Lightning- Rod Swindle (Ed. Tab) xvi 559 Higher, Modern Literatures in. J. B. Mozley i 396 How Scientific, is evaded (Ed. Tab.) viii 750 Huxley on Female (Misc.) v 764 Incentives in (Ed. Tab.) vi 748 in Public Schools of Massachusetts (Misc.) x 635 in Sierra Leone (Misc.) iii 396 Language in (Ed. Tab.) xii 238 Liberal, of the Nineteenth Century. W. P. Atkinson iv 1 Liberty of Science and. HaeckeVs Address and Vircliovfs Reply (Ed. Tab.) xiii 107 Mental Discipline in. A. G. Menvin vii 699 Methods in Industrial. S. P. Thompson. . . , xviii 202 Mill, and Science. Contrasting Mill's and Spencer's Education (Ed. Tab.) iv 368 Mixed (Misc.) xviii 719 Modern Studies in (Ed. Tab.) i 496 New Experiments in (Ed. Tab.) v 744 Observation in (Ed. Tab.) « 371 of Woman, The Higher (Ed. Tab.) iv 748 Physical. Notice of Oswald's papers (Ed. Tab.) xviii 418 Physical. Felix L. Oswald : I, II. Diet xviii 303> 456 IH. In-door Life xviii 5?7 IV. Out-door Life xvUi f53 V. Gymnastics X1X ' VI. Clothing xix 145 VII. Sleep xix 834 VIII. Recreation xix 450 IX, X. Remedial Education xix, 595, 721 XI. Hygienic Precautions xx ^6 XII. Popular Fallacies xx 156 Practical (Misc.) viii 383 Place of 'English in Higher. A. B. Stark xiv 81 Place of Science in Higher (Ed. Tab.) i C24 Professor Agassiz's Estimate of New England (Misc.) ii 759 Professor Martin on Scientific (Ed. Tab.) x 3°8 Progress of Rational (Ed. Tab.) xiv m Question at Montpellier (Ed. Tab.) viii 495 Recent Progress in the Higher (Ed. Tab.) v G30 IXDEX OF VOLUMES I TO XX. 31 VOL. TAGE Education, Report of President Eliot on (Ed. Tab.) iii 768 Requirements of Scientific. R. W. Raymond iv 208 Science and Aristocracy iv 480 Science and Industrial, in the United States. A. D. White v 170 Science of (Misc.) vi 381 Scientific, in England (Misc.) iii 651 Scientific, in Germany (Cor.) xiv 107 Scientific, in the far West (Ed. Tab.) iii 391 Self-Government in (Ed. Tab.) xix 555 Sewage in College (Ed. Tab.) xvii 693 State (Ed. Tab.) xix 703 State, A Necessity. C. S. Bryant xix 635 State. Hon. A. Herbert xvii 585 Teclmical (Misc.) iv 635 Technical. T. H. Huxley xii 570 The Higher. F. W. Clarke vii 402 War and (Ed. Tab.) v 370 Zoological. W. S. Barnard xvii 666 Educational Convention at Elmira, 1873 (Ed. Tab.) iii 766 Literature, Specimen of. Xeopliogen College. F. W. Clarke xi 713 Logic, Curious (Ed. Tab.) xviii 267 Progress, Another Step in (Ed. Tab.) xix 267 Reform, Conditions of (Ed. Tab.) xvi 849 System, Science and our. F. A. P. Barnard ii 695 Educator, The State as an. H. H. Wilson xviii 664 Edward's Biography (Ed. Tab.) x 751 Edward, Thomas. Sketch of, with Portrait x 594 Eel, Structural Peculiarities of the (Misc.) xviii 569 Eggs and Meat, Comparative Value of, for Foods (Misc.) x 381 Decomposition of (Misc.) vi 375 Growth of Plants in (Misc.) vi 634 (Misc.) xx 855 Egleston, N. H. Forestry, European Schools of xix 311 Forests, Value of our xix 1 76 Egyptian, Ancient, Mines (Misc.) iii 526 Marriage and Animal Worship (Misc.) xx 717 Ehrenberg, C. G. Sketch of, by F. Hoffmann, with Portrait xiv 668 Electric Boat, Trouv6's (Misc.) xx 137 Candle, The. A. Niaudet xi 429 Conductivity, Influence of Heat on (Misc.) xi 123 Illumination (Ed. Tab.) xiv 234 William Crookes iii 584 Light and Vegetation (Misc.) xvii 283, xx 569 as a Source of Nitric Acid (Misc.) xiv 692 Diffusion and Softening of the (Misc.) xviii 715 Distribution of (Misc.) xvi 284 Division and Distribution of the (Misc.) xv 712 Economy of (Misc.) x 763 Experiments with the (Misc.) xiii 380 for Steamships. J. Trowbridge v 720 for the French Coast (Misc.) xix 142 32 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Electric Light, Gas and the (Misc.) xvi 859 Progress of the (Misc.) xiii 634, xvi 570 Steadiness of the (Misc.) xv 857 The. John Tyndall xiv 553 The Maxim (Misc.) xviii 424 Lighting, Recent Advances in. W. H. Preece xix 378 Motor, Improved (Misc.) xix 130 Signaling on English Railroads. C. E. Pascoe iv 581 Spark, Duration of, " Quicker than Lightning " iv 309 Storage of Energy xix 547 Electrical Apparatus for Beginners, Meyer's (Misc.) xii 506 Exhibition, International (Misc.) xx 141 Experiment of the Eighteenth Century (Misc.) xvii 422 Fishes, Marey on (Misc.) xv 427 Girl, The. Louis Figuier vi 588 Measurement, Units of (Misc.) xix 131 Nuisance, An. A. W. Bacheler (Cor.) xx 843 Phenomena of Venus's Fly-Trap (Misc.) x 247 Science, American Contributions to (Ed. Tab.) xii 744 Electricity and Agriculture. Paget Higgs xvii 664 and Life. F. Papillon ii 526 and Vegetation (Misc.) xvi 712 Atmospheric. H. S. Carhart xviii 513 Atmospheric, and Ozone. G. M. Beard iv 456 Atmospheric, and Plant-Growth (Misc.) xiv 247 Development of, by Light (Misc.) x 510 Effects of, on Particles suspended in Liquids (Misc.) x 121 for exploding Mines (Misc.) ii 761 in Thunder-storms. E. Foote xiii 689 in War (Misc.) xii 382 Is, Life ? H. Lake ii 477 Lessons in. John Tyndall viii 607, ix 30, 158 331 Managing Horses by (Misc.) xvii 139 Modern Development of Faraday's Conception of. H. Helmholtz. xix 242 Recent Wonders of. W. H. Preece xx 669, 7S6 Storage of (Misc.) xix 566 Velocity of (Misc.) vii 761 Electrification, Expansion of Bodies by (Misc.) xvi 574 Electro-Medical Humbug, An, Pulvermachers Rings (Ed. Tab.) vi 505 Electro-Motors and Dynamo-Machines, Improvements in (Misc.) xviii 280 Electro-plating (Misc.) xii 252 Elements, Are the, elementary ? F. W. Clarke viii 463, (Misc.) xiv 407 Discovery of the. W. Odling i 474 The Chemical. J. N. Lockyer xiv 600 Elephant, Proposed Domestication of the African (Misc.) xiv 551 Voice of the (Misc.) x 766 Elephants, Capture of a Herd of (Misc.) vi 757 Elevators, Improved Safety Construction of (Misc.) xviii 137 Eliot, C. "W. Address, Opening, American Museum of Natural History, xii 473 University, A National iii 089 Elliott, E. T. " Cave-Dwellers in America, The Age of xv 488 IXDEX OF VOLUMES I TO XX. 33 VOL. PAGE Embalming, New Process of (Misc.) xii 639 Embryo Life, Studies of (Misc.) xiii 382 Emergencies, Common Sense in (Misc.) xvi 719 Emotion, The Physiology of. G. F. Blandford i 274 Emotional Language of the Future iv 319 Emotions, Brain-Work and the ii 420 Language and the. C. Waldstein xiv 190 The Expression of the ii 434 Enemies, The, We import, Destructive Insects. S. Lockwood i 620 Energy, Availability of. W. D. Miller xvii 244 Dissipation of. George lies xii 701 II. F. Walling iv 430 of Nature, Tbe Available. Sir W. Thomson xx 87 Engine, Solar (Misc.) iv 765 Engineer, Tbe Studies of an (Misc.) x 509 Engineering, Ancient, among the Cbinese (Misc.) ii 127 Growth of Mining, in United States (Misc.) xiv 403 Origin and Development of. Sir John Hawksbaw viii 33 Engines, Steam-, Animals and (Misc.) x 632 England and America, Letter from Tyndall (Misc.) iv 631 Engler, E. A. Carbon Button, The xvii 10 Time- Keeping in Paris xx 304 Enjoyment, The Duty of. Spencer's Ethics xvi 6-10 Enterprise, Ignorant (Misc.) xi 122 Entomological Specimens, Preservation of (Misc.) x 125 Entomology, Important Discovery in (Misc.) xiv 836 Entozoon, A New, from the Common Eel (Misc.) i 758 Environment, Influence of the (Misc.) xii 122 Eozoon Canadense (Misc.) v 127 Ephesus, Wood's Discoveries at vii 223 Epidemics and Ablution (Misc.) . . xii 639 (Misc.) xvii 425 Two Remarkable (Misc.) xvi 286 Equation, The Personal. E. S. Holden vi 385 (Misc.) xiv 837 Erie, Origin of Lake (Misc.) xx 136 Error, A Typographical (Cor.) xx 403 Erwin, A. W. Steam Navigation, Dr. Lardner and Transatlantic (Cor.) xiv 673 Esquimaux, Ancestors of tbe (Misc.) vii 382 Esquimau Skull, Dimensions of the (Misc.) xv 859 Eternal Punishment, Catholicism and (Ed. Tab.) xiii 368 Ether, The Interstellar (Misc.) xx 142 Ethics, A Vindication of Scientific. W. D. Le Seur xvii 324 ," Reception of the " Data of (Ed. Tab.) xvi 408 Spencer's Data of. Alexander Bain xvi 210 Ethnological Specimens, Interesting (Misc.) xii 377 Etrurian Art, A Relic of Ancient (Misc.) iii 780 Eucalypti as Timber-Trees (Misc.) ix 509 Eucalyptus, Chemical Products of (Misc.) ii 253 in tbe Future. S. Lockwood xii 662 in the Roman Campagna. H. N. Draper xix 94 3 34 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Eucalyptus, Tincture of, in Intermittent Fever (Misc.) x 249 Europe, Winter of 1879-80 in (Misc.) xvii 136 Euthanasia iii 90 Natural. B. W. Richardson viii 617 Evergreen, A New Ornamental (Misc.) vii 509 -Trees, Insect Destruction of (Misc.) xv 855 Evolution admitted, what then ? (Ed. Tab.) xvii 409 Amherst College and. D. G. Thompson (Cor.) xvii 120 and Immortality. E. O. Mason vii 46 and Mind. C. B. Radcliffe iii 359 and Originality in Art (Ed. Tab.) xviii 697 and the Copernican Theory (Ed. Tab.) x 236 and the Doctrine of Design. W. S. Jevons v 98 and Theology (Ed. Tab.) v 114 and the Origin of Life. H. C. Bastian iv 713 and the Spectroscope. F. W. Clarke ii 320 A Problem in Human. Loss of Hairy Covering. Grant Allen xv 250 Cosmic and Organic. L. F. Ward xi 672 Difficulties of, as applied to Man. A. R. Wallace x 60 Evidence of (Misc.) vii 756 Geographical. A. Geikie xv 548, 593 Geography and. R. Strachey viii 192 Geology, and Genesis. George Henslow iv 324 going on before our Eyes. C. C. Abbott (Cor.) vii 108 Huxley's Lectures in America x 43, 207, 285 Huxley's American Lectures. James McCosh x 86 in Amherst College. D. G. Thompson (Cor.) xvii 405 in Man, ^Esthetic. Grant Allen xviii 339 J. W. Draper xii 175 Martineau on. H. Spencer i 313 Mathematics in. George lies ix 202 Morality and (Ed. Tab.) xv 124 of Organic Form. C. Morris xviii 80 Reply to Fallacies of. G. J. Romanes xvi 101 Sir Wyville Thomson on (Misc.) xi 126 Social. J. E. Cairnes vi 604 Social, Cairnes on (Ed. Tab.) vi 016 Spencer and. E. L. Youmans vi 20 The Doctrine of. Reply to Attack of " Scrihier's Magazine" (E&. Tab.) ii HO The Literature of (Ed. Tab.) vi 715 Theory, Is the, atheistic ? (Misc.) xiii 700 Theory, Progress of (Ed. Tab.) xi 753 Thomas Meehan (Cor.) x 102 Virchow and. John Tyndall xiv 266 What American Zoologists have done for. E. S. Morse x 1, 181 Expansion of Bodies by Electrification (Misc.) xvi 574 Expedition, British Scientific (Misc.) ii 509 Explanations that do not explain (Ed. Tab.) xv 410 Exploring Expeditions, College (Misc.) x 249 Northern (Misc.) i 508 IXDEX OF VOLUMES I TO XX. 35 VOL. PAGE Explosion, A Powder-Mill. W. Aikman iv 231 A Remarkable Coal-Mine (Misc.) xvii 429 Explosions from Combustible Dust. L. W. Peek xiv 159 in Coal-Mines. F. R. Conder xv 200 Some Facts about (Misc.) xix 281 Explosives (" Atmosphere as an Anvil ")• J. P. Cooke v 220 Modern. B. V. Abbott xx 794 Speed of (Misc.) xx 429 Eje, Defects of the Human (Misc.) vii 381 Observing the Interior of the. J. Bernstein ix 684 Sensibility of the, to Light (Misc.) xv 142 "What the, sees in Reading. D. MUlikin (Cor.) xviii 262 Ejes and School-Books. H. Cohn xix 54 Hygiene of the (Misc.) xi 506 in Flounders, Asymmetry of the (Misc.) x 636 of Deep-Sea Animals (Misc.) xiii 382 Reproduction of, in Crawfish (Misc.) iii 525 Unequal Power of the (Misc.) iv 379 What the, see in Reading (Misc.) xv 570 Eyesight of Readers (Misc.) xvii 711 Study and the. W. McLean xii 74 Typography and (Misc.) xx 424 F Facial Angle, The. R. Dexter iv 587 Anomalies. K. Muller vi 73 Fairbairn and the Synthetic Philosophy (Ed. Tab.) xix 846 Fairchild, II. L. Animals, How, breathe xx 448, 742 Blood and its Circulation xix 460, 644 digest, How Animals xvii 600 eat, Plow Animals xvii 224 Food, Curious Ways of getting xvi 770 Fairfield, F. G. Tobacco, Physiological Effect of. vi 76 Family, Evolution of the. Herbert Spencer xi 129, 257 The, and the State (Ed. Tab.) xi 370 The. Domestic Retrospect and Prospect. Herbert Spencer xi 513 Famine, Causes of the Chinese (Misc.) xii 759 Famines in Ancient and Modern Times (Misc.) xv 137 Faraday, Henry and. A. M. Mayer xviii 76 Faraday's Electrical Researches, Helmholtz on (Ed. Tab.) xix 268 Farewell. Poem (Misc.) xii 509 Farns worth, P. J. Mound-Builders (Cor.) xx 267 Farquhar, II. Stars, The Fixed xv 503 Farquharson, R. Mental Overwork x 326 Farrier, The Art of the (Misc.) xi 378 Fauna, Winter, of Mount Marcy (Misc.) ix 509 Fayrer, Sir Joseph. Sunstroke xix 171 Feather, A. W. K. Brooks iv 686 Pleased with. Grant Allen xv 366 Feet, Muscular Structure of the Hands and (Misc.) vii 757 Ferment, A Fossil (Misc.) xvii 138 3 6 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Fermentation and Disease. E. S. Morse (Cor.) xi 363 and Disease. John Tyndall x 129 and Disease. M. M. Kenney (Cor.) xi 236 and Putrefaction. William Canniff (Cor.) x 742 and Putrefaction (Misc.) x 126 Pasteur on vii 709 Ferments, Fermentations, and Life. F. Papillon v 542 Ferns, Ancient (Misc.) ii 633 in the South Pacific Islands, Distribution of (Misc.) vii 636 Fertilization of Flowers (Misc.) in 652 of Plants (Misc.) ix 765 of Plants, Insect (Misc.) x 380 Sewage (Misc.) iv 507 Fertilizer, Leached Ashes as a (Misc.) iv 509 Fetich-Worship and Witchcraft, African (Misc.) xvii 428 Idol- Worship and. Herbert Spencer viii 158 Fever-Factories. F. L. Oswald xiv 143 Fever, Intermittent. Eucalyptus Tincture in (Misc.) x 249 Fevers, Marsh- (Misc.) xi 250 Fever- Tree, Australia vii 345 Yellow. R. S. Tracy xiii 714 Figuier, Louis. Electrical Girl, The vi 588 Filtering Apparatus, Improved (Misc.) xix 283 Filters, Atkins's Charcoal (Misc.) iv 759 Spongy Iron (Misc.) x" 379 Filtration, Ancient Methods of. H. C. Bolton xvi 495 Finite, Relation of the, to the Infinite. N. J. Gates xiii 73 Fiords of Glacial Origin on Long Island (Misc.') xiv 831 Fire, Early History of. N. Joly x 17 -Escape, New (Misc.) u 511 My. F. W. Clarke. Poem xvii 321 Fires and their Causes X1V 653 at Sea, Putting out (Misc.) viii 504 Great, and Rain-Storms. John Trowbridge ii 206 in Coal- Mines, Prevention of (Misc.) x 763 Fish, A Motherly (Misc.) vi| J_26 A New Food (Misc.) xvj m Animal Heat of (Misc.) xvi 801 A Rapacious (Misc.) x ^GO as Food (Misc.) j 2 ir -Breeding Impure Water fatal to (Misc.) xii G37 C. F. Saratoga, Mineral Springs of six 24 -Culture (Misc.) vii 503 -Culture in New Zealand (Misc.) u| G5° -Culture, Notes on (Misc.) xj| 249 -Eggs, Transportation of (Misc.) vu ^61 English, in Indian Waters (Misc.) ■ v 12G Four-legged (Misc.) ') C3G -Life and the Pollution of Rivers (Misc.) vii 378 Night Babitsof (Misc.) ix C32 Reproduction of Organs in (Misc.) v 511 IX DUX OF VOLUMES I TO XX. 37 VOL. PAGE Fish, Subterranean (Misc.) iv 639 Fisher, G. J. Blood, Historical Sketch of the Discovery of Circulation of the xi 294 L. C. Ants (Cor.) xviii G96 Fishes, Amphibious. E. Sauvage ix 54G Clever. F. Francis i 529 Migrations of. F. Heincke xviii 212 Mouthless (Misc.) vii G38 Odd Forms among. S. Tenney xi 525 Parental Instinct in (Misc.) vii 638 The Air-Bladder of (Misc.) vii 638 Voice in (Misc.) xvi 574 Fiske, John. Agassiz and Darwinism iii G92 Fiske's Lectures on " America's Place in History " (Ed. Tab.) xv 5G0 Fison, L. Marriage, Views of Primitive xvii 203 Fitch, Dr. Asa. Sketch of, by E. P. Thurston, with Portrait xvi 116 Fitzgerald, J. Birds, Do, improve in Nest-building? . . ii 485 Chameleons — their Habits and Color-Changes vi 526 Flame, Sounds produced by blowing into a (Misc.) ix 125 Flames, Cause of the Light of. W. Stein vii 696 Practical Application of Singing (Misc.) ii 757 Flammarion, C. Constellation, Past and Future of a iv 291 Earth, How the, was regarded in Old Times x 542 Mars iv 187 Planets, Intra-Mercurial xiv 714 Sirius, The System of xii 47 Stars, Distances of the v 423 Flint, Jr., Dr. Austin. Sketch of, with Portrait ix 103 Floating of Solid in Molten Iron (Misc.) vi 633 Flower, W. H. Deformity, Fashion in xvii 721 Flowers, Change of Tint in (Misc.) xi G33 Color in (Misc.) xix 717 Fertilization of (Misc.) iii 652 Fossil, and Insects (Misc.) i 252 Influence of Ammonia on the Color of (Misc.) vii 254 Insects and (Misc.) vi 636 Rationale of Double (Misc.) iv 762 Florida Keys, Fauna and Flora of the (Misc.) xi 637 Fly, A Viviparous (Misc.) iii 398 Development of the House-. M. H. Robson xv 618 Flying-Machines and Penaud's Artificial Bird. A. M. Mayer viii 453 Fluorescence, The Nature of. E. Lommel viii 471 Fodder-Plant. A Drought Proof (Misc.) xiii 763 -Tree (Misc.) # xv 717 Fog, A Curious (Misc.) vii 507 Dust the Nucleus of (Misc.) xix 142 -Signaling, Atmosphere in Relation to. J. Tyndall vi 541, 685 -Signal Question (Misc.) vii 120 -Signals, Recent Experiments on. John Tyndall xiii 275 Sound and (Misc.) viii 380 Folk-Lore, Plantation. T. F. Crane xviii 824 3 8 THE POPULAR SCIENCE MONTHLY. VOI.. PAGE Food (Misc.) xv 140 and Feeding. Sir II. Thomson xv 377, 514, 620 and the Development of Man. Otto Ule v 591 Curious Ways of getting. H. L. Fairchild xvi 770 Fish as (Misc.) i 247 Nutritive Salts of. Professor Voit i 405 Foods, Nature and Influence of. Edward Smith iii 441 Foote, E. Electricity in Thunderstorms xiii 089 Footprints in the Rocks. C. H. Hitchcock iii 428 Forhes, George. Measurement of Earthquake-Waves i 586 Principal, J. D. Notice of Tyndall's Discussion with, concerning Gla- ciers (Ed. Tab.) iii 770 II. O. Bird or Reptile— which ? xiii 719 Force and Motion. A. Arnold (Cor.) vi 499 and Work (Misc.) viii 762 behind Nature, The. W. B. Carpenter xvi 614 Conservation of. A. Arnold (Cor.) vii 229 Forces, Balance and Compensation of Inorganic (Ed. Tab.) xx 123 Correlation of Vital with Chemical and Physical. Joseph Le Conte iv 156 Initiatory. George lies xi 156 Wasted/ J. W. Cloud (Cor.) xv 698 Wasted. W. II. Wahl xv 289 Wasted. W. H. Wahl (Cor.) xvi 408 Forest-Beds, Age of the Ohio (Misc.) xiii 507 -Culture in Alpine Ravines. M. J. Cleve xix 830 Prairie and, Distribution of (Misc.) xiii 122 -Trees, Action of Drought and Cold on (Misc.) iii 249 Forestry (Misc.) ix 632 Association, The American (Misc.) x 251 European Schools of. N. II. Egleston xix 311 in India (Misc.) xix 137 Forests and Rainfall vii 207 Climate and. F. L. Oswald xi 385 Destruction of our (Misc.) xiv 550 Differences between Atlantic and Pacific (Misc.) xiii 762 Underground, in the Thames Valley (Misc.) ix 255 Value of our. N. H. Egleston xix 176 Form, The Pleasure of Visual. James Sully xvi 780, xvii 77 Formosa, Travels in (Misc.) xii 761 Fort, A Primitive (Misc.) vi 380 Fortieth Parallel, Geological Survey of the. J. S. Newberry.. xv 302 Fortress of the Polished-Stone Age in Spain (Misc.) xix 718 Fossil Edentates (Misc.) v 384 Mammal from the Jurassic of the Rocky Mountains (Misc.) xiii 377 Man of Mentone. Theodore Gill v 641 Man, The. II. W. Haynes xvii 350 Fossils in Trap-Rock (Misc.) vii 124 New and Interesting (Misc.) xv 713 New Carboniferous (Misc.) xx 861 Recently Discovered (Misc.) ix 631 South American (Misc.) xiv 687 INDEX OF VOLUMES I TO XX. 39 VOL. PAGE Foster, G. F. Gravitation, and how it works xi 37 John W. Obituary Notice Hi 508 Michael. Protoplasm xi 422 M. Vivisection iv 672 Fothcrgill, J. M. Alcoholic Excess and Character xiv 379 Disease, Mental Aspects of Ordinary vi 562 Fowle, T. W. Conscience, Place of, in Evolution xiii 513 Science and Immortality i 26 Fox, A Baby-. B. G. Wilder v 443 France, New Conditions affecting Life in (Misc.) xx 860 Frankland, E. Sketch of, with Portrait xv 838 Francillon, R. E. Authorship, Physiology of vii 93 Francis, Francis. Clever Fishes i 529 Fraser, W. Death, Real and Apparent xviii 401 Fraunhofer, Joseph. Sketch of, with Portrait vi 739 Freezing, Effects of, on Wine and Spirits (Misc.) iii 054 of a Lake by Radiation (Misc.) xvii 572 of Plants and Animals. Fr. Mohr iii 96 French Association, The (1880) (Misc.) xviii 141 People, Food-Rations of the (Misc.) vii 508 Friedmann, P. Benevolence, Genesis of xiii 735 Friendships, Strange Animal xiv 1S2 Froebel, C. Alchemy, Future of iv 602 Frog, Experiments on the Circulation of the (Misc.) ii 702 The Horned. F. Buckland ii 676 Frogs and Reptiles, Changes of Color in (Misc.) i 376 Hatching, under Colored Glass (Misc.) vii 639 Frost, Action of, on the Position of Trees (Misc.) v 508 Phenomena. W. S. Bigelow (Cor.) xvi 842 Phenomena in Southern Russia xvi 686 Froude, Tyndall and. Discussion of Science of History (Ed. Tab.) ii 373 Fruit-Farming in England (Misc.) xi 249 -Growing, Forests and. J. S. Patterson ii 194 -Ripening, Chemistry of. A. B. Prescott xii 400 Fruit, Stone-Grains in (Misc.) xviii 428 Fruit-Tree, A New Japanese (Misc.) xii 378 Fruits, Abnormal (Misc.) x 761 and Seeds. Sir John Lubbock xix 156, 354 Origin of. Grant Allen xiii 597 Fryatt, F. E. Lunar Lore and Portraiture xix 511 Fryer, C. E. Salmon, Growth of. iv 27 Fuegians, How the, keep warm (Misc.) vi 125 Fuel, Domestic Economy of. Douglass Galton iii 193, 297 Economy of (Misc.) ii 506 Gas as a (Misc.) ix 635 Grass and Straw as Domestic (Misc.) xiii 761 Water as. Fuel-Gas. W. C. Conant xvi 653 Fulgurites, Origin and Structure of (Misc.) vii 249 Fungi as Insecticides (Misc.) xix 136 in Cow's Milk (Misc.) i 636 Fur-bearing Animals, Changes in the Skin of the (Misc.) viii 252 4o THE POPULAR SCIENCE MONTHLY. VOL. PAGE Furnace, A New Smelting (Misc.) xviii 281 Furniss, J. J. Spectroscope, A Home-made xv 808 Furs and their Wearers. J. H. Partridge iv 143 Artificial (Misc.) vi 378 Fuzi-Yama and Hakusan (Misc.) ii 634 G Gairdner, Professor. Wonder, Diseased Condition of Faculty of xv 196 Galapagos Islands, Zoology of (Misc.) i 633 Galiani, Darwin versus. E. Du Bois-Reymond xiv 409 Galileo, Medicine's Debt to (Misc.). xiv 403 The Trial of. A. Mezieres x 385 Gallium, Physical Properties of (Misc.) x 638 Galton, Douglass. Fuel, Domestic Economy of iii 193, 297 Francis. Images, Generic xv 032 Portraits, Composite xiii 460 Psychometric Facts xiv 771 Scientific Men, Causes which create iii 65 Twins, etc., illustrating the Eelative Powers of Nature and Nurture viii 345 Visions of Sane Persons xix 519 Games, History of. E. B. Tylor xv 225 Gannett, Henry. Canon, The Unaweep xx 781 Prehistoric Ruins in Southern Colorado xvi 666 Gardens of Cashmere, Floating (Misc.) xx 284 Gardner, A. K. Causes of Physical Degeneracy i 482 W. II. Crows, A Flock of Mythological xviii 43 Gar-Pike, Habitat of the. B. G. Wilder (Cor.) xi 366 Old and Young. B. G. Wilder xi 1, 186 The (Misc.) vii 759 Garretson, F. Vibration of Rocks in Patapsco Valley xx 541 Garver, J. A. Matches xi 413 Gas as a Fuel (Misc.) xii 037, ix 635 and the Electric Light (Misc.) xvi 859 Coal-, Products of, Combustion (Misc.) xiv 547 Effect of Illuminating, on Bookbinding (Misc.) xvii 143 Manufacture and Gas Companies. W. E. Simmons x 478 New Material for Illuminating (Misc.) hi 254 Purfication of Illuminating (Misc.) xii 765 -Stoves and the Products of Combustion (Misc.) xiv 692 -Well, A Kansas (Misc.) xii 376 Gases, Liquefaction of. G. Tissandier xii 01 G, xiii 78 (Misc.) iii 254, xii 635 Gassiot, J. P. Death of (Misc.) xii 117 Gastman, E. A. Crayfish for Study (Cor.) xvii 405 Gastric Juice, Late Researches on the (Misc.) i 372 Saliva and the (Misc.) xix 129 Gates, N. J. Infinite, Relation of the Finite to the xiii 73 Geikie, A. Geographical Evolution. ... • xv 548, 593 Rock-weathering xviii 654 J. Gulf Stream and Panama Canal xx 005 Professor. Geologist, Accoutrement of a Field x 708 IXDEX OF VOLUMES I TO XX. 4i VOL. PAGE Gelatine as a Food Preservative (Misc.) xiv 251 Gems, Artificial. Cams Sterne xiii 539 Geographical Exploration, Eecent. 0. P. Daly xvii 171 Evolution. A. Geikie xv 548, 593 Progress, Eecent. 0. P. Daly ix 37 Progress, Eecent (Ed. Tab.) ix 108 Science, Beginnings of. G. A. Jackson xvi 236 Society, American (Misc.) x 508 Work, A Year of iv 735 of 1874 vii 218 Geography and Evolution E. Strachey viii 192 Early Study of. Major Wilson vi 212 in Schools (Ed. Tab.) iii 389 Modern Scientific. H. J. Klein ix 713 Scope of Modern (Misc.) xv 569 Geological Action, Efficiency of Present Causes in (Misc.) xix 430 Changes in Colorado (Misc.) xi 510 Congress, Proposed International (Misc.) x 381 Estimates, Accurate (Misc.) xi 638 Question, An Interesting (Misc.) xiii 765 Survey of the Fortieth Parallel. J. S. Newberry xv 302 Surveys and Education (Ed. Tab.) , iii 243 State. A. E. Leeds iii 226 Geologic History of the Earth. C. H. Hitchcock iv 513 Strata and tbeir Fossils. S. Lockwood. " Great Cemetery in Colo- rado " iv 470 Geologist, Accoutrement of a Field. Professor Geikie x 708 Geology and History. Grant Allen xvii 495 at the Syracuse University (Misc.) viii 508 Genesis, and Evolution. George Henslow iv 324 in Eome, How they teach (Misc.) x 120 of the Far West (Misc.) xvi 568 of the Great Plain of Morocco (Misc.) ii 635 of the Land of Moab (Misc.) iv 764 Studies in Experimental. S. Meunier xvii 200 George, Henry. Kearney Agitation in California xvii 433 Political Economy, Study of xvi 601 Genealogy. J. Amphlett xiii 583 Generation, Air-Germs and Spontaneous. P. Schutzenberger ix 91 Spontaneous , ii 83 (Misc.) x 758 Controversy (Misc.) xi 381 W. H. Dallinger ix 448 John Tyndall x 641, xii 476, 591, viii 686 Tyndall and Eobertson (Misc.) x 757 The Death of a (Misc.) xiii 122 Genesis, Geology, and Evolution. George Henslow iv 324 Germany, Scientific Advance in (Misc.) i 251 Germination, Changes attending the Process of (Misc.) vi 758 Effect of Cold on (Misc.) i 254 Temperature of (Misc.) vi 637, ix 121 42 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Germs, Destruction of, at Low Temperatures (Misc.) xi 124 Destruction of Infectious. A. Wernich xvii 828 Disease-. W. B. Carpenter xx 244 in the Air, Examination of (Misc.) xix 136 Germ-Theory. C. W. Johnson (Cor.) xii 743 The. L. Pasteur xx 801 Gesture-Speech (Misc.) xx 135 Geysers. Joseph Le Conte xii 407 New Zealand. C. Bunbury xv 356 Gill, Theodore. Fossil Man of Mentone v 641 Girard, M. Poison, Curari or Woorara xiv 3G9 Glen Roy, The Parallel Roads of x 309 Glacial Action in the Yellowstone Valley (Misc.) xix 278 Ice-Sheet in the Interior States (Misc.) xix 425 Man in America. B. F. De Costa xviii 31 Period, " The Age of Ice " iv 041 Climate of the (Misc.) vi 374 Man and the. Thomas Belt xii 61 Phenomena (Misc.) ix 381 Theory, Supplement to the (Misc.) x 112 Glacier of the Yellowstone, The Great (Misc.) xviii 568 The Whitney (Misc.) xii 636 Glaciers and their Investigators. John Tyndall iii 746 Dimensions of New England (Misc.) iii 127 Experimental (Misc.) xvi 860 of Norway. II. M. Baird vii 458 of the Sierra Nevada at Lake Tahoe, Ancient (Misc.) vii 762 Retreat of (Misc.) xviii 862 The Polar. C. C. Merriman viii 702, ix 178 Gladstone's Correction of Spencer (Cor.) iv 492 Glass (Misc.) ii 252 Action of Sunlight on. E. S. Drone v 67 Blue (Ed. Tab.) xi 109 Corrosion of (Misc.) vi 253 Muslin- (Misc.) xiii 251 New Method of annealing (Misc.) xiii 704 -Sponges. Samuel Lockwood iii 529 Fishing for (Misc.) ix 120 Tempered. P. F. Nursey vii 554 To pierce, with the Electric Spark (Misc.) xvii 285 Toughened (Misc.) vii 505 Globe, A Large Terrestrial (Misc.) xv 424 Globigerinna (Misc.) vii 121 Glucose and Grape-Sugar. IT. W. Wiley xix 251 Glycerine, Tests for (Misc.) iv 510 Goat-Suckers, How the, came by their Namo (Misc.) . . xv 574 God and Nature Lord Bishop of Carlisle xvii 27 Godwin, Parke. Science, Sphere and Limits of (Cor.) .......: iii 105 Godwin's Letter. Reply to Parke Godwin on Sphere and Limits of Sci- ence (Ed. Tab.) iii 115 Goethe and Ihe Artistic Study of Nature (Ed. Tab.) xvii 406 IXDEX OF VOLUMES I TO XX. 43 VOL. PAGE Gold in Sea-Water (Misc.) ii 255 -Mint's, Lake Superior (Misc.) v 380 Goose, A Carnivorous (Misc.) xv 430 Barnacle- iv 5G5 Question, Our Ancestors on the iv 5G5 Gopher, The Prairie (Misc.) vii' 637 Gorilla. F. Buckland on the Berlin (Misc.) xii 253 The Berlin (Misc.) x 511 Gould, B. A. Sketch of, by E. Winslow, with Portrait xx 683 Death of John (Misc.) xviii 860 Government, Decline of Party. Goldwin Smith xi 734 Machinery of Elective. Goldwin Smith xx 628 Science and Party. Notice of Goldwin Smith's -paper (Ed. Tab.)... xx 696 Governmental Negligence (Misc.) iii 525 Graefe, Dr. A. von. Sight and the Visual Organ i 457 Grafting, Natural (Misc.) iv 380 Granite, A Mountain of (Misc.) ix 123 Granville, J. M. Brain-Cells, Education of xvi 200 Dreams and Dream-making xx 461 Worry xx 102 Grape-Culture (Misc.) xiii 254 -vine Blight (Misc.) iv 381 Pest. C. V. Eiley v 158 Grasshopper Dinners (Misc.) , vii 759 Plague, Western (Misc.) v 760 Grasshoppers, Extermination of the (Misc.) xi 126 Grasshoppers' Eavages, Western. D. C. Collier (Cor.) ix 749 Where do the, belong ? (Misc.) vii 507 Gratacap, L. P. American Continent, The Primeval xix 229 Ice Age, The xii 319, xiv 90 Grate, Siemens's Improved Smokeless (Misc.) xviii 854 Gravitation, and how it works. G. F. Foster xi 37 Gray, Asa. Darwin, An Estimate of v 475 Derivation of American Plants i 724 Sketch of, with Portrait i 491 Elisha. Sketch of, by George B. Prescott, with Portrait xiv 523 Gregan, T. J. Crystallization of Gold, Silver, etc xiv 434 Greek at Cambridge, Study of (Ed. Tab.) xviii 413 Greeley, Horace. Obituary (Ed. Tab.) ii 372 Green, F. M. Longitude, Telegraphic Determination of vii 426 N. W. Springs and Wells, Why do, overflow ? xvi 71 T. Classical Studies (Cor.) xvii 552 Greenland, Life in viii 431 Griffin, La Roy F. Animals and the Faculty of Direction (Cor.) xvii 692 Grote, A. R. Atlantis (Cor.) xvi 266 Man and his Structural Affinities xiii 429 Man, Early, in North America x 582 Moth, Boring, Discovery of a Species of, in Florida (Cor.) ix 494 Moths, Variation in x 223 Ground- Air in its Hygienic Relations. Max von Pettenkofer xi 280 Grove, W. R. Sketch of, with Portrait vii 363 44 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Grover, J. W. Railway Locomotion, Economy of iii 146 Growth and Reproduction. A. B. Blackwell v 606 Guano, Bat- (Misc.) x 122 Guano-Deposits, Continuity of the (Misc.) viii 250 Guebhard, A. Vortex-Rings, Studies of. Illustrated xx 175 Guillemin, A. Star, The New, in Constellation of tbe Swan xi 59 Guinea, Eastern New, People of (Misc.) ix 507 Gulf Stream and tbe Panama Canal. J. Geikie xx 665 Gun-Cotton, New Preparation of (Misc.) vii 247 Spontaneous Explosions of (Misc.) i 376 Gunning, W. D. Past and Future of Niagara i 564 Plants, Have, a Pedigree ? v 129 Progression and Retrogression viii 180 Gunpowder, Manufacture and Conveyance of. A. H. Atteridge vi 717 Smokeless ii 61 Guns, Length of (Misc.) i 372 Gutta-Percba, Substitute for (Misc.) xiv 126 Gymnastics, The Age of. F. L. Oswald xiii 129 Gypsies, Origin of the x vi 540 H Habit, Transmission of (Misc.) x 380 Hardwicke, Robert (Misc.) vii 252 Haeckel, E. Bathybius and the Moners xi 641 Darwin and. T. H. Huxley vi 592 Protoplasm, Properties of viii 67 Sketch of, with Portrait vi 108 Hagar, G. J. Speech, Infirmities of (Cor.) viii 366 Hail in the Spray of the Yosemite Fall, Formation of (Misc.) vii 7G3 Hailstones, Raindrops and, Formation of x 522 Hair, Extraordinary Development of iv 448 -Dye, Persian (Misc.) xiv 249 How the Feelings affect the. D. II. Tuke ii 158 Pigments of the (Misc.) xiv 694 -Snakes, Origin of (Misc.) v 509 Hale, E. M. Ants, Feeding nabits of Wood- (Cor.) xi 104 Hallucinations, Alcoholic (Misc.) i 638 of the Senses. H. Maudsley xiii 698 Halstead, B. D. Moulds, Our Common ix 398 Plant- Life, The Unit in six 543 G. B. Algebras, Spaces, Logics xvii 516 Sciences, Spencer's Classification of the Abstract (Cor.) x 609 Space, New Ideas about (Cor.) xi 364 Hamilton, A. McL. Suicide in Large Cities viii 88 R. S. Social Science, Present Status of ix 602 Hamlin, A. C. Diamond-Cutting viii 206 Hammers and Percussion. A. Rigg 'x H Hand, Huxley on the (Misc.) : xiv 544 Handicraft, German (Misc.) x'i G36 Hands and Feet, Muscular Structure of the (Misc.) vii 757 Hanffin-', Pain in. R. S. Tracey xiii 349 •■05 INDEX OF VOLUMES I TO XX. 45 VOL. PAGE Hanoverian Village Life. W. Nordhoff xvi 467 Hardaker, M. A. Woman Question, Science and the xx 577 Harmonil, J. Oil-Plants of French Guiana xviii 384 Harmony, Imperfections of Modern. S. A. Pearce xvi 508 Hartmann's Philosophy of the Unconscious. Leon Dumont ii 152, 311 llartshorne, Henry. Hydrophohia (Cor.) iii 509 Ilartt, C. F. Ornament, Evolution in vi 2GG Sketch of, by R. Rathbun, with Portrait xiii 231 Hartwich, C. A Botanist of the Ninth Century xx 523 Harvard, Agnosticism at (Ed. Tab.) xix 266 Elective Studies at (Ed. Tab.) iii 769 Medical Course (Misc.) xvii 716 Recent Original Work at. J. R. W. Hitchcock xvii 482 Harvey Tricentenary, Huxley's Address at the xiii 396 Hasheesh. C. Richet xiii 482 Hatchets, Axes and, Ancient and Modern. A. Rigg ix 186 Hatzfeld, M. A. Wood, New Process for Preservation of. v 228 Haviland, C. T. Abstraction in Science, Results of xv 825 Mind as a Measure of Nature xviii 681 Hawkins, J. Meteor, A Brilliant (Cor.) xviii 696 nawkshaw, Sir J. Engineering, Origin and Development of viii 33 Hay, George. Arsenic in Kindergartens (Cor.) xvi 694 Hayes on the School Question (Ed. Tab.) xviii 128 Haynes, H. W. Fossil Man, The xvii 350 Hay ward, J. W. House-building, Health and Comfort in iv 69 Haywood. S. II. Science and the Theologians ("Spiritual Pirates") vi 599 Hazard, R. G. Animals not Automata vi 405 Health and Material Prosperity (Misc.) xix 127 and Recreation. B. W. Richardson xiv 780 Climate and (Misc.) xix 567 Cure as a Remedy for Adversity (Misc.) ... xvii 574 Dress in Relation to. B. W. Richardson xvii 182 Heat and (Misc.) xx 573 Laws of. Thomas Bond x 198 -Lift, Disadvantages of the (Misc.) xiii 254 -Matters in Japan. E. S. Morse xii 280 Mental Labor and (Misc.) ii 763 Nervous and Moral ii 416 Noxious Vapors and (Misc.) xiv 254 Open Air and. J. R. Black (Cor.) xii 494 Open Air and. P. Niemeyer xii 216 Topographical Surveys and (Misc.) xii 253 Trees and (Misc.) xii 758 Heart-Disease and Overwork (Misc.) iii 779 Hope for Sufferers by (Misc.) xx 711 Foul Air and Disease of the. C. Black ii 183 Marey's Experiments on the Action of the (Misc.) x 248 Motions of the (Misc.) iii 781 Heat, Action of Radiant, on Gaseous Matter. John Tyndall xix 33 and Life. F. Papillon ii 400 and Light, Identity of (Misc.) xv 428 4 46 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Heat, by Friction of lee (Misc.) vii 504 -Engines, Possible Efficiency of. W. A. Anthony xvii 831 History of the Dynamical Theory of. P. Poinier xii 206, 330 Industrial Use of Solar. L. Simonin ix 550 Morbid Effects of. W. J. Youmans iii 497 Sound and Radiant. John Tyndall xx 650 The New Philosophy of. E. R. Craven (Cor.) ix 363 Heating1, House-, in Sweden (Misc.) vi 254 Hebrew Religion, Evolution of. Felix Adler ix 589 Hedge-Plant, A Good (Misc.) iv 634 Heidenhain, R. Hypnotism, Artificial xviii 362 Heincke, F. Fishes, Migrations of xviii 212 Hemlock, Poisoning with Extract of (Misc.) vii 250 Hemp-Plant, Intoxicating Properties of the (Misc.) xvi 719 Hendricks, J. E., Matter, Physical Constitution of (Cor.) iv 493 Hennell, S. S., Spencer and the Women (Cor.) iv 746 Henry and Faraday. A. M. Mayer xviii 76 Joseph. Obituary (Ed. Tab.) xiii 365 Josepb. Science, Importance of Cultivation of ii 6-41 Josepb. Sketch of, with Portrait ii 741 Henslow, George. Genesis, Geology, and Evolution iv 324 John Stevens, A Scientific Home Missionary iii 159 Heliograph, The Mance (Misc.) xv 429 Heliography, Message by (Misc.) xvii 716 Heliotype Process (Misc.) xii 639 Hell, Concerning the Belief in (Ed. Tab.) xii 627 -Gate Explosion, The (Ed. Tab.) x 105 Helmholtz, H. Electricity, Modern Development of Faraday's Concep- tion of xix 242 Sketch of, by G. A. F. van Rhyn, with Portrait v 231 Tyndall's Relation to Popular Science v 734 Helmholtz's Faraday Lecture (Ed. Tab.) xix 268 Help, Law of Mutual (Misc.) xvii 709 Herbert, Hon. A. Education, State xvii 585 Herculaneum, How was, destroyed? M. Beul6 ii 232 Hereditary Transmission of Mental Habits. "William B. Carpenter iii 303 Heredity. George lies xiv 356 and Education, Relative Power of, as illustrated by Twins. Francis Galton viii 345 in Mastiffs (Misc.) iii 126 in Nervous Disease. E. Dupuy xi 332 Mutilations and (Cor.) xiv 233 Phenomena of. F. Papillon iv 55, 170 Heresy, Latest Cases of (Ed. Tab.) xi 494 Hermit- Crabs, Habits of (Misc.) viii 639 Hermit of Red-Coat's Green (original of Dickens's " Mopes ") D. H. Tuke vi 301 Herrick, S. B. Hydroids viii 17 Sketch of Francis Huber vi 486 Herring, The. T. II. Huxley xix 433 Herrings, About (Misc.) xvi 427 INDEX OF VOLUMES I TO XX. 47 VOL. PAGE Ilerschel, Caroline Lucretia, Sketch of, by E. A. Youmans, with Por- trait viii 736, ix 58 Hewitt, A. S. Iron and Civilization i 339 Ilibbard, Shirley. Balance of Life in the Aquarium i 434 Hicks, J. H. Sparrow, Observation of the English (Cor.) xvii 552 Higgins, P. J. Ventilation, School-room xix 531 Higgs, Paget. Electricity and Agriculture xvii 664 Hildebrand, F. Plants, Longevity of , xx 657 Hilgard, J. E. Sketch of, with Portrait vii 617 Hill, F. C. Spectroscope, Hints on the v 311 Water-Supply of Islands vi 440 ninrichs, G. Chemistry, Geometrical (Cor.) ix 613 Meteor, The Great Iowa vii 588 ninton, James. Ear, Hygiene of the iii 139 Hippopotamus and her Baby. Frank Buckland iii 85 History and the Centennial (Ed. Tab.) viii 629 Geology and. Grant Allen xvii 495 Hitchcock, C. II. Correction of Article (Cor.) xx 403 Footprints in the Rocks iii 428 Ice Period, North America in the xx 229 Life, Earlier Forms of x 257 The World before the Introduction of Life iv 513 J. R. W. Harvard, Recent Original Work at xvii 482 R. Measure of Length xix 652 Hittle, J. S. Steam, Apotheosis of ix 430 Holden, E. S. Equation, The Personal vi 385 Mathematics, Early Hindoo iii 334 Nebula in Sagittarius viii 269 Nebula of Orion, Telescopic Research on the v 257 Time, Distribution of Standard, in the United States xi 174 Holland, Major. Myriapods ix 570 Homesteads and Households. W. F. Channing ix 733 Honeycomb, A Living xvi 824 -Dew, Origin of (Cor.) xi 237 Making in the United States (Misc.) xvi 142 Properties and Production of (Misc.) xii 765 Hooker, J. D., and the Kew Gardens (Misc.) i 762 Sketch of, with Portrait iv 237 Horned Frog, The. F. Buckland ii 676 Horse, Evolution of the (Misc.) x 118 in America, The (Cor.) xii 743 Paces of the vi 129 Professor Huxley on the (Ed. Tab.) x 369 with a Stone in his Stomach (Misc.) xv 428 Horses and their Feet. Sir George W. Cox xviii 468 Fossil (Misc.) vi 125 Intestinal Calculi in (Misc.) x 760 Managing, by Electricity (Misc.) xvii 139 Many-toed xvi 258 Horses' Ribs, A Curious Question of. Max Muller vii 214 Hospitals, Relations of, to Pauperism. W. Gill Wylie ix 738 48 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Hotchkiss Revolver-Cannon (Misc.) iii G51 House-Building, Health and Comfort in. J. W. Hay ward iv 69 Hints on (Misc.) i 126 -Heating in Sweden (Misc.) vi 254 Households, Homesteads and. W. F. Channing is 733 Houses, Ancient Aboriginal (Misc.) xx 287 for the Industrious Poor (Misc.) ix 508 Laborers' (Misc.) vii 635 Unhealthiness of New (Misc.) ix 117 Hovey, H. C. Cave, Scientific Exploration of Mammoth (Cor.) xx 403 Huber, Francis. Sketch of, by Mrs. S. B. Herrick, with Portrait vi 486 Huet, A. B. Telegraph and Postal Service, Union of six 400 Hulett, D. A. Man, Early, of North America xi 365 Human Races, Crossing of the. M A. De Quatrefages xvii 166 Nature, The Study of. H. W. Beecher i 327 Humming-Bird, How the, feeds (Misc.) xv 141 J. H. Partridge v 277 Humor ? Have Animals a Sense of (Misc.) vii 631 Hunt, Robert. Coal as a Reservoir of Power i 738 T. S. Chemistry, Celestial vi 420 Sketch of, with Portrait viii 486 Huntington, A. K. Steel, Progress in Manufacture of sis 808 Hutchison, J. Tennyson and Botany iv 193 Husley, T. H. Animal and Vegetable Kingdoms viii 641 Anthropology, Progress of .*t . siii 668 Automatons ? Are Animals v 721 Before English Copyright Commission siv 166 Biological Science and Medicine sis 795 Biology, On the Study of. x 527 Challenger, Espedition of vii 26 Darwin and Haeckel : vi 592 Expected Visit to the United States (Ed. Tab.) is 621 Education, Technical sii 570 Herring, The six 433 Paleontology, Rise and Progress of ss 165 Physiology, Elementary Instruction in si 668 Priestley, Joseph vi 90 Science and Culture. sviii 159 Sea, Problems of the Deep iii 451 Sensation sv 86 Sketch of, by E. Haeckel, with Portrait iv 739 Species," Coming of Age of the " Origin of svii 337 Species ? What are is 409 Universities ; Actual and Ideal. v 46 Yeast i 573 Zadig, The Method of. svii 467 Husley's Address at the Harvey Tricentenary siii 396 American Lectures. E. Ray Lankester xi 709 " Hume," Agnosticism in. J. McCosh sv 478 Lectures (Ed. Tab.) s 103 Lectures. Reply to Dr. Deems (Ed. Tab) x 616 INDEX OF VOLUMES I TO XX. 49 VOL. PAGE Huxley's Lectures in America x 43, 207, 285 Lectures in America (Ed. Tab.) ix 499 Hyacinth-Bulbs. Grant Allen xx 817 Hybrids, Fertility of (Misc.) xvii 858 Hydraulics of Great Rivers v 327 River. C. E. L. B. Davis (Cor.) vi 236 Hydrogen, Behavior of Metals with (Misc.) viii 254 -Flame, Observations on the (Misc.) i 377 Gas, Cheap (Misc.) ii 639 Hydrography viii 513 Hydroids. S. B. Herrick viii 17 Hydrophobia. Henry Hartshorne (Cor.) iii 509 and the Imagination (Misc.) iii 253 Chloral Hydrate in (Misc.) i 507 Transmissibility (Misc.) xvi 712 Some Superstitions of. C. P. Russell vi 174 Hygiene, Ancient (Misc.) xiv 549 Individual (Misc.) xii 380 in Higher Education of Women. A. H. Bennett xvi 519 of New-born Children (Misc.) xvii 715 School (Misc.) vi 633 Hygieopolis, A Chinese (Misc.) xvii 287 Hygrometers (Misc.) x 509 Hypnotic Phenomena, Reality of (Misc.) xix 279 Hypnotism (Misc.) x 758 G. J. Romanes xviii 108 Artificial. R. Heidenhain xviii 362 Experiments on. F. C. Clarke ix 211 in Animals. Joseph Czermak iii 618, iv 75 Spontaneous (Misc.) ix 633 Hysteria and Demonism. C. Richet xvii 86, 155, 377 I Ice-Action (Misc.) viii 121 Ice Age in Great Britain (Misc.) x 118 Ice Age, The iv 641 Ice Age, The. H. B. Norton xv 833 Ice Age (Cor.) xvi 554 Ice Age. L. P. Gratacap xii 319, xiv 90 Ice Age. M. Lyford (Cor.) xvi 693 Artificial (Misc.) xii 508 Drift-, Damming of Streams by (Misc.) ix 379 Heat evolved by Friction of (Misc.) vii 504 in the Sick-Room, Preservation of (Misc.) x 764 Period, Causes of the Cold of the. J. S. Newberry ix 280 Period, North America in the. C. H. Hitchcock xx 229 Plasticity of (Misc.) x 637 The Physics of. E. Lewis, Jr v. 399 Icebergs. Antarctic (Misc.) x 631 Iceland (Misc.) xvii 710 5o THE POPULAR SCIENCE MONTHLY. VOL. PAGE Ideas, Association of. William James xvi 577 Relative Importance of. Evolution and . Educational Periodicals (Ed. Tab.) xi 108 Idiocy, Equine (Misc.) vii 639 Idol- Worship and Fetich- Worship. Herbert Spencer viii 158 Ignorance, Advantages of. F. W. Clarke xviii 337 lies, George. Continuity, The Law of xii 29, 623 Cooperation in England xvii 742 Energy, The Dissipation of xii 701 Forces, Initiatory xi 156 Heredity xiv 356 Mathematics in Evolution ix 202 Motion, Constancy of x 225 Illusion, An Optical (Misc.) viii 254 Illusions and Apparitions (Misc.) xvii 571 Imagery, Mental. Francis Galton xviii 64 Images and Shadows. W. J. Youmans iv 665 Generic. Francis Galton xv 532 Imagination. Elliott Coues xi 455 Coues on (Ed. Tab) xi 497 Magnetism and the (Misc.) vi 762 Immortality. John Trowbridge x 715 Evolution and. R. O. Mason vii 46 Index to Popular Science Monthly (Ed. Tab.) xx 847 India, Cave-Temples of (Misc.) xix 713 Effects of English Rule in (Misc.) xiv 404 European Life in (Misc.) viii 510 Regarding Matters in. Captain Lyon ii 614 Indian Mill, An (Misc.) viii 504 Indians, A Libel upon the (Ed. Tab.) viii 748 India-Rubber Industries. Thomas Bolas xvii 802 Indigo in Bengal, Manufacture of (Misc.) xviii 708 Industrial Occupations of Women (Misc.) iii 653 Inebriety, Fatality of (Misc.) xi 636 Infant, Mental Development of the Human. W. Preyer xvii 625 Infantile, Prenatal and, Culture. E. Seguin x 38 Infants, Medication of (Misc.) ix 255 Progress in Language. F. Pollock xiii 587 Infection, Vehicles of (Misc.) viii 382 Infectious Organisms, Adaptability of (Misc.) xx 424 Infertility in France (Misc.) xviii 859 Influenza, Causes of Horse (Misc.) ii 765 Ingersoll, E. Buffalo and his Fate xvii 40 Mollusks of the Rocky Mountains ix 43 Swallows, Bank- vii 315 Inheritance. C. Darwin xix 663 Inherited Traces of Surgical Operations (Misc.) iii 521 Inland Seas, Physical Conditions of (Misc.) iv 378 Inoculation, Antiquity of the Practice of (Misc.) xiv 695 Insanity. (Ed. Tab.) v 240 and the Power of AYeeping (Misc.) xiii 507 INDEX OF VOLUMES I TO XX. $1 VOL. PAGE Insanity, Ilumanity of. Maxime Du Camp ii 218 in Russia (Misc.) xv 425 Is, on the Increase ? (Misc.) xi 508 Juries, Judges, and. II. Maudsley i 440 Law and. H. Maudsley v 77 Modern Life and. D. II. Tuke xii 432 War and (Misc.) ii 252 Insect Conservatism, Lubbock on xviii 396 Fertilization of Plants (Misc.) x 380 -Killing Plants (Misc.) viii 766 -Life in a Coal-Mine (Misc.) ii 255 -Powders, as Remedies for Flies and the Apbis (Misc.) xvii 282 Praying, The Mantis .... iv 710 Ragman, An (Misc.) xiv 839 Insecticide, Sulphide of Carbon as an (Misc.) ix 707 Insecticides, Fungi as (Misc.) xix 136 Insectivorous Plants. E. R. Leland viii 45 Insects and Colored Flowers. T. D. Lilly (Cor.) xiv 529 and Flowers (Misc.) i 758, vi 636 and Flowers in Colorado. J. D. Putnam (Cor.) x 612 and Flowers in Colorado. Theodore L. Mead (Cor.) xi 104 and Flowers in Colorado. T. Meehan (Cor.) x 301, 743 Bacteria as Destroyers of. E. Ray Lankester xvii 93 Direction of Flight by. M. J. De Bellesme xvii 114 Effects of the Glacial Epoch on the Distribution of (Misc.) vi 379 Excommunicated (Misc.) viii 504 Extirpation of Injurious (Misc.) xii 123 How Suctorial, feed (Misc.) vi 255 Instinct in. George Pouchet iii 12, 149 Migrations of (Misc.) iv 382 Neuter. Philip Woolf xv 470 Tomato-Plant as a Protection against (Misc.) x 250 Uses of the Antennae of (Misc.) xi 637 Insects' World. W. M. "Williams xix 43 Instinct and Acquisition. D. A. Spalding viii 310 and Intelligence. W. K. Brooks xi 585 and Intelligence. J. Le Conte vii 653 at Fault in a Humming- Bird (Misc.) ii 254 in Insects. George Pouchet iii 12, 149 in Young Birds. D. A. Spalding ii 561 Plasticity of. G. J. Romanes viii 449 Instincts, Survival of. Elias Lewis, Jr iv 88 Instruments, A Collection of Quaint Scientific (Misc.) xx 858 Insurance, Modern Basis of Life. Theodore Wehle xix 625 Origin and History of Life. Theodore Wehle xix 482 Practical Business of Life. Theodore Wehle xix 732 ATalue. E. Wright (Cor.) v 235 Intellect, Town and Country as Producers of. By G. B. M i 600 Intellectual Straining xvi 93 Intelligence, Animal (Misc.) vii 121 Animal. G. J. Romanes xiv 214 52 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Intelligence, Animal, Instinct and. W. K. Brooks xi 585 Instinct and. J. Le Conte vii 653 Intercollegiate Spouting-Match (Ed. Tab.) vi 622 Interoceanic Canal (Ed. Tab.) xvi 416 Routes. 0. De Fourcy xvi 380 Invention, Education and (Misc.) vi 637 Iron and Civilization. A. S. Hewitt i 339 and Steel, Testing Strength of (Misc.) vii 377 and Steel. United States Board for testing (Misc.) viii 246 Barff's Method of Preserving (Misc.) xi 633 Coal and, resources of Alabama (Misc.) x 637 Manufacture, Improvement in (Misc.) x 249 Passivity of, after Treatment with Nitric Acid (Misc.) xvi 719 Protecting, from Rust (Misc.) x 765, xiv 687, xv 429 Rationale of the Welding of (Misc.) viii 253 Utensils, Marbleized (Misc.) xii 381 Ironless Civilization, An (Misc.) xv 715 Irving's Works, Copyright of. G. P. Putnam's Sons xx 554 Islamism, Epileptic Origin of ii 605 Italians, Were the Ancient, Cannibals? (Misc.) i 632 Italy, Observatories of. G. Rayet xi 538 Ivins, W. M. Jurisprudence, Science of Comparative xvii 577 Ivory, Vegetable (Misc.) iii 251 J Jablochkoff Electric Light in London (Misc.) xvii 706 Jackson, C. T. Sketch of, with Portrait xix 404 G. A. Geographical Science, Beginnings of xvi 236 Jr., R. F. Lightning-Stroke, Remarkable (Cor.) xv 409 Jacobi, Mary Putnam-. Women, Rest for (Cor.) xii 492 James, J. F. Desert, The Colorado xx 384 Plants, Modes of Distribution of xvii 365 William. Ideas, Association of xvi 577 Japan, Ancient Man in (Misc.) xii 377 Caves in (Misc.) xviii 143 Dolmens in. E. S. Morse xvi 593 Health-Matters in. E. S. Morse xii 280 Science Lectures in. E. S. Morse (Cor.) xiv 388 Traces of an Early Race in. E. S. Morse xiv 257 Japanese, Stature of the (Misc.) xvii 142 Jasmine Flowering Early (Misc.) v 127 Javal, M. Daylight in the School-room xvi 517 Jevons, W. S. Evolution and the Doctrine of Design v 98 Legislation, Experimental xvi 754 Sketch of, with Portrait xi 745 Jews, Physiological Immunities of the (Mi»-c.) xx 426 Slaughter of Food Animals among the (Misc.) xix 139 Jiggers of the Lake Erie Islands. D. V. R. Manlcy (Cor.) xix 098 C. V. Riley (Cor.) xix 845 Johnson, C. W. Germ Theory (Cor.) : xii 743 L. Species, The Chain of. v 313, 460, 568 INDEX OF VOLUMES I TO XX. 53 VOL. PAGE Johnston-Lavis, IT. J. Volcanic Cones, Origin and Structure of. xviii 776, xix 49 Jolly, N". Fire, Early History of. x 17 Water turned to Blood iv 202 Jones, L. C. Visions of Sane Persons (Cor.) xx 123 W. Animals, Legal Prosecutions of xvii 619 Jordan, D. S. Salmon, Story of a xix 1 Joule, J. P. Sketch of, with Portrait v 103 Journalism, Progress of (Ed. Tab.) xiii 241 Judson, J. A. Drinking- Water from Agricultural Lands xiv 44 Jumpers of Maine. George M. Beard xviii 170 The, of Maine (Misc.) xv 428 Jupiter, " A Giant Planet." R. A. Proctor i 286 and Saturn, Physical Condition of. D. Trowbridge xi 233 News from. R. A. Proctor iv 433 What is, doing? H. J. Slack xvi 737 Jupiter's Cloud Masses, Movements of. R. A. Proctor „ . „ xi 81 Jurisprudence, Science of Comparative. W. M. Ivins xvii 577 Justice, Criminal, in 1876 (Ed. Tab.) ix 498 Jute (Misc.) i 761 Cultivation of, in the South (Misc.) vii 127 -Paper (Misc.) iii 524 K Kafirs of Kafirista^ (Misc.) xx 138 Kangaroo, Natural History of the. St. George Mivart viii 409 Kearney Agitation in California. Henry George xvii 433 Kearneyism in California. Notice of George's Paper (Ed. Tab.) xvii 557 Kenney, M. M. Fermentation and Disease (Cor.) xi 236 Kennon, L. Mice, Singing (Cor.) xiv 673 Space, New Ideas about (Cor.) xi 749 Kett, F. Zuni Indians of New Mexico v 580 Kidder, J. IT. Bird, An Interesting viii 657 Kiddle, II. Spiritualism (Cor.) xv 408 Kindergartens, Arsenic in. George Hay (Cor.) xvi 694 King, A. F. A. Disease, Conservative Design of Organic vii 160 Kingsley, Charles. The Study of Physical Science i 451 Popular Geology i 613 J. S. Philadelphia Academy xx 531 Kirkwood, Daniel. Comets and Meteors i 335 Dust, A Shower of (Cor.) xvii 554 Mars and its Satellites xi 706 Vulcan, The Planet xiii 732 Klein, IT. J. Geography, Modern Scientific ix 713 Koehler, S. R. Color-Blindness xix 91 Kopernicki, J. Characteristics of the Calmucks i 419 Kneeland, S. Art, The Monstrous in xiv 731 Knight, G. H. Stonehenge? Who erected (Cor.) ix 751 Strike, Great Railroad, of 1877 (Cor.) xii 107 Knowledge, Character of Modern. J. L. W. Thudichum viii 724 First-Hand and Second-Hand. W. B. Dalby xvi 197 Loose and Accurate (Ed. Tab.) i 238 5+ THE POPULAR SCIENCE MONTHLY. VOL. PAGE Knowledge of Nature, Limits of our. E. Da Bois-Beymond v 17 Nobility of. J. P. Cooke, Jr v 610 Knox, Eobert (Ed. Tab.) vii 621 His Life and Work vii 543 Kuntze, O. Plants and tbe Peopling of America xiv 78 L Labor, Association in its Eelation to. W. B. Weeden viii 586 Mental, and Healtb (Misc.) ii 763 -Question, Tbe. E. G. Eccles xi 605 Tbe Source of i 40 Laboratory Endowment. F. W. Clarke x 729 Lace and Lace-making. E. A. Youmans viii 521 Lactometry and Morals (Ed. Tab.) vii 110 Lacustrine Dwellings in Germany (Misc.) iii 653 Lagoon Islands, Elevation of, in the Pacific (Misc.) i 506 Lake, Ancient Beaches of Great Salt (Misc.) xiii 253 -Basins of the West, Professor Marsh on (Misc.) vi 765 -Dwellers, How the, lived (Misc.) xiii 639 Great Salt, Ancient Condition of (Misc.) ix 633 H. Electricity, Is, Life ? ii 477 J. J. Earthquakes and their Causes vii 732 Lakes, Formation of. J. C. Eussell ix 539 Origin of Upland. J. C. Ward xiv 810 Oscillations of (Misc.) viii 379 Lamp, A Phosphorus- (Misc.) i 252 The Bunsen. II. P. Ormsby xx 378 Land-Slides, Eemarkable (Misc.) xiii 121 Langley, J. W. Chemistry, Synthetic v 39 Langley, S. P. Photosphere and Sun-Spots v 532 Physics, Eecent Progress of Solar xvi 1 Scientific Treatise, The First Popular x 718 Transit of Venus vi 214 Language and the Emotions. C. Waldstein xiv 1P0 On Infants' Progress in. F. Pollock xiii 587 Development of, in a Child. H. Taino ix 129 Emotional, of the Future iv 319 in Education (Ed. Tab.) xii 238 Eeason against Eoutine in Teaching. C. Marcel vi 322, 470 Languages, Are, Institutions? W. D. Whitney vii 142 Lankester, Edward. Condensed Milk in England iii 466 Lankester, E. Ray. Bacteria as Destroyers of Insects xvii 93 Crayfish, The xvi 789 Huxley's American Lectures xi 709 Lansing, ('<. L. Chinese Immigration xx 721 Lapland, Nature and Life in. C. Chamberlain x 450 Larned, J. N. Civilization and Morals xi 549 Larrabee, W. II. Earth-worms and their Wonderful Works xx 289 Sirens of the Sea, The (Illustrated) xx 621 Laryngoscope and Rhinoscope. F. Seeger . . . xii 166 Lassell, William, Death of (Misc.) xviii 716 IXDEX OF VOLUMES I TO XX. 55 VOL. PAGE Lattiinore, S. A. Water, Bad Odors in Reservoired Drinking- xi 409 Law, Materials of the Science of. S. Amos v 596 Origin of Criminal. W. C. Albro (Cor.) xvii 121 Origin of Criminal. W. W. Billson xvi 433 Origin of Criminal. C. J. Buell (Cor.) xvi 842 Lawes, W. G. New Guinea and its People xx 324 Lava-Flood, The Great, of the West (Misc.) v 381 Laveleye, Smile De. Luxury, Morals of xviii GG9 Lead Pipes, Action of Sewage-Gas on (Misc.) i 251 Rats and (Misc.) xviii 429, 708 Leaf, The, Function of (Misc.) i 766 Leared, Arthur. The Causes of Dyspepsia i 75 Leaves, Action of Sunlight on (Misc.) vi 124 Physical Functions of xiv 305 Le Conte, John. Mars and his Moons xvi 82 Nebular Hypothesis ii 650 Le Conte, J. L. Biological Inquiry, Modern viii 285 Sketch of, with Portrait v 622 Le Conte, Joseph. Forces, Correlation of Vital with Chemical and Phys- ical iv 156 Geysers .* xii 407 Instinct and Intelligence vii 653 Science and Mental Improvement xiii 96 Sex, Genesis of xvi 107 Sketch of, with Portrait xii 358 Sociology and Biology xiv 325, 425 Lectures, Scientific. Professor E. S. Morse (Ed. Tab.) iv 242 Lectureship, Monday-, Philosophy (Ed. Tab.) xviii 556 Lee, Henry. Singing Mice xiv 102 William. Burials, Extreme Rarity of Premature xvii 526 Leech, The Medicinal. A. Berghaus xvii 478 Leeds, A. R. Geological Surveys, State iii 226 Spang Collection of Minerals iv 443 Lefimgwell, A. J. Will, Scientific Aspect of Free- xvi 745 Legislation, Experimental. W. Stanley Jevons xvi 754 Legislative Blunders (Misc.) v 510 Leidy, Joseph. Natural Science Establishment, Ward's xvi 612 Sketch of, by E. J. Nolan, with Portrait xvii 684 Leighton, Jr., William. Prince Rupert's Drops viii 315 Leland, E. R. Ants, Anent vii 257 Coinages, The Debasement of xii 5S0 Commercial Distress, Cause of (Cor.) xi 489 Draper's " Science and Religion " (Cor.) ix 613 Insectivorous Plants yiii 45 Mites, Ticks, and other Acari xiv 502 Variation, Accidental (Cor.) ix 750 Lemattre, G. Transfusion of Blood ii 079 Lemming, The Norwegian, and its Migrations. W. D. Crotch xi 404 Leprosy, Hawaiian (Misc.) xx 567 Le Sueur, W. D. Ethics, Vindication of Scientific xvii 324 Materialism and Positivism xx 615 5 6 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Leverrier, Death of (Misc.) xii 117 Lewes, G. H. Science, Dread and Dislike of. xiii 410 Sketch of, with Portrait. ix 743 Lewis, Jr., Elias. Climate and Time, Croll on vii 719 Corals and Coral Architecture i 257 Earthquake Phenomena ii 513 Ice, The Physics of v 399 Instincts, Survival of iv 88 Longevity of Trees iii 321 Long Island Coast x 434 Sand-Dnnes, Formation of viii 357 Serpents, Concerning iv 257 Walking, Swimming, and Flying iv 528 Liability, Some Notes on a Doctor's. O. E. Lyman xviii 7G9 Libraries, Circulating, and Contagious Disease (Misc.) xvi 138 Deterioration of Binding in (Misc.) xviii 718 Free Circulating (Ed. Tab.) xx 698 French Public (Misc.) viii 765 Insects in (Misc.) xvii 286 Liebig, Baron Justus von. Sketch of, with Portrait iii 232 Character and Work of. J. L. W. Thudichum ix 49 The Statue to (Ed. Tab.) ix 615 Liebig's Extract of Meat (Misc.) i 373 Influence on German Science (Misc.) viii 639 Liebreich, R. Effects of Faulty Vision in Painting i 174 Life and Light. F. Papillon ii 294 Atmospheric Pressure and. Paul Bert xi 316 Development of Vibrio- (Misc.) ii 761 Duration of Human. C. S. Bryant (Cor.) xx 553 Duration of Human. M. De Solaville xx 95 Earlier Forms of. C. H. Hitchcock x 257 Electricity and. F. Papillon ii 526 Evolution and the Origin of. H. C. Bastian iv 713 Heat and. F. Papillon ii 400 Human, Increased Length of (Misc.) v 383 in an Attenuated Atmosphere (Misc.) v 379 in the Mountains (Misc.) viii 125 Material Resources of. A. B. Prescott xi 339 Monera and the Problem of. E. Montgomery xiii 455, 533, 677 Odors and. F. Papillon vi 142 -Question, Modern Aspects of the. George F. Barker xvii 750 -Saving Raft, New French fMisc.) v 510 -Saving Service, United States. W. I). O'Connor xv 182 The. Profusion of. A. B. Buckley xviii 96 Light, Action of, on Selenium (Misc.) x 116 and Life. F. Papillon ii 294 ( Ihemical Influence of (Misc.) i 766 Experiment show ing Compound Nature of White (Misc.) xii 122 Heat and (Misc.) xv 428 Mechanical Action of (Misc.) vii 632 Mechanical Action of. AVilliam Crookes vii 683, ix 257 INDEX OF VOLUMES I TO XX. 57 VOL. PAGE Light, of Flames, Cause of the. W. Stein vii 696 Polarized. Explanation of Color of Sky. W. Spottiswoode ii 50 Reflection and Refraction of v 33 -Registering Machine, An Automatic (Misc.) ix 122 Sensitiveness of Silver-Salts to (Misc.) vii 766 Transformation of Sound into (Misc.) xviii 142 -Waves and Sound-Waves (Misc.) iii 519 Lighthouse, The New Eddystone (Misc.) .... xix 574 Lighthouses, Rhythmic and Colored Lights for (Misc.) xvii 427 Lightning among a Flock of Geese (Misc.) vi 378 Conductors, Efficiency of (Misc.) xvii 421 Conductors, Metal Roofs as (Misc.) vii 254 Curious Effect of. M. J. Safford (Cor.) xvi 266 Effect of, on Different Trees (Misc.) x 120 Effect of, on Rock and Soil. S. Meunier xx 655 in an Electric Clock (Misc.) vii 379 in a Telegraph Office (Misc.) x 511 Mechanical Power of. D. A. Cobb (Cor.) vii 488 Protection of Buildings from. J. C. Maxwell x 154 -Rod, Form of (Misc.) xviii 572 -Rod, Form of. J. Phin vii 399 -Rod. L. H. Andrews and J. Phin (Cor.) vii 746 -Rod, Investigating (Misc.) xvi 863 -Rod Swindle, The Chambers. "Education for Guidance " (Ed. Tab.) xvi 559 -Rods, Action of (Misc.) xii 760 -Rods, Construction and Erection of (Misc.) xiii 509 -Rods, Insulation of (Misc.) vii 378 -Rods, The Ground Connection of (Misc.) ii 120 -Rods, The Office of (Misc.) i 639 -Rods, The Size of (Misc.) xv 431 Stroke, Recovery from (Misc.) vii 637 Remarkable. R. F. Jackson, Jr., (Cor.) xv 409 Trees and (Misc.) xix 277 Lights, Artificial (Misc.) xviii 283 Intensity of Different Colored (Misc.) xii 759 Penetrating Power of Different Colored (Misc.) viii 760 Lignite-Beds of the Rocky Mountains (Misc.) iv 763 Lilly, T. D. Insects and Colored Flowers (Cor.) xiv 529 Limestone, On a Piece of. William B. Carpenter (Misc.) viii 165 Lindsay, W. L. Moral Sense in the Lower Animals xvi 346 Liquids, Propagation of Waves in (Misc.) viii 253 Liquors, Japanese Fermented (Misc.) xiv 252 Literature, Science and. William Brackett xv 166 Sham Admiration in. James Payn xvii 48 Littrow, C. von. Science, Backwardness of the Ancients in Natural. . . . ix 438 Living Matter, Death-Point of. II. C. Bastian v G95, vi 185 out-of-doors (Misc.) xii 509 Livingstone, David, Sketch of, by L. J. Procter, with Portrait ii 327 Lizard, An Edible (Misc.) v 763 Habits of the Green (Misc.) xix 286 Lizards, Florida (Misc.) xii 249 5 3 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Lizards. H. C. Yarrow (Cor.) xii 363 Lockwood, S. Anemones, Sea- vii 1 Andubon's Lily rediscovered x 675 Crabs v 191 Enemies we import i 620 Eucalyptus, The, in the Future xii 662 Glass-Sponges iii 529 Great Cemetery in Colorado iv 470 Musical Mice i 323 Owls, Our American . . xi 142 Oyster, Longevity of the xx 477 Oyster, Natural History of the vi 1, 157 The Coati-Mundi and its Cousins ii 136 Wild-Flowers, Cultivated ii 356 Lockyer, J. N. Elements, The Chemical xiv 600 Sketch of, with Portrait iv 109 Water-Waves and Sound- Waves xiii 166 Lockyer's Researches, Professor Clark on (Misc.) xv 138 Locomotion, Animal. "Walking, Swimming, and Flying." E. Lewis, Jr iv 528 A Study in. E. J. Marey xv 317 Human vi 48 Locomotive, Compressed-Air, in St. Gothard Tunnel. C. M. Gariel x 473 Locusts, A Swarm of (Misc.) iv 636 Locust, Distribution of the Seventeen-Year (Misc.) xi 765 Distribution of the Rocky Mountain (Misc.) ix 377 in Africa (Misc.) ix 766 Native Home of the Rocky Mountain (Misc.) viii 505 Plague, Efforts to Stop the (Misc.) x 380 Rocky Mountain, in Manitoba (Misc.) xi 508 Loess or Loam Deposits of China (Misc.) xiii 252 Loew, O. Moquis Indians of Arizona v 351 Logicians, Science and the. D. Boyd ix 224 Logic of Science. C. S. Peirce xii 1, 286, 604, 705, xiii 203, 470 Lommel, Eugene. Fluorescence, The Nature of viii 471 Longevity, Antediluvian. C. M. Mead — A. Bigelow (Cor.) xx 842 of Trees. Elias Lewis, Jr id 321 Long Island Coast. E. Lewis, Jr x 434 Drift, Eastern Extension of the (Misc.) xv 861 Longitude, Telegraphic Determination of. F. M. Green vii 426 Lord, W. W. Suicide (Cor.) xvii 120 Lortet, Dr. Chromis Pater-Familias, The ix 322 Lovering, J. Machinery, Sympathetic Vibrations in iii 737 Physics, Mathematical Investigations in vi 308 Progress, Instruments in Physical vi 197 Low, C. R. Cocoa-Nut Palm, and its Uses ii 214 Lubbock, Sir John. Ants, On the Habits of xi 39 Fruits and Seeds xix 156, 354 on Science in Primary Schools (Misc.) xvi 429 Science, A Half-Century of xx 65, 193 Luminous Paint (Misc.) xvii 707 INDEX OF VOLUMES I TO XX. S9 VOL. PAGE Luminous Phenomenon, Interesting. G. B. Seely (Cor.) xvi 554 Phenomenon, Remarkable (Misc.) xv 859 Lunar Craters (Misc.) xix 713 Lore and Portraiture. F. E. Fryatt xix oil Temperatures ill 448 Lunatics, Treatment of, by Colored Light (Misc.) ix 634 Lungren, C. M. Domestic Motors xviii 217, 323, 483 Progress and Poverty xvi 721 Luxury, Morals of. Emile de Laveleye xviii 6G9 Lyell. Bean Stanley's Sermon on (Ed. Tab.) vii 113 Discourse on the Death of. Dean Stanley vii 90 Sir Charles, Sketch of, by Grant Allen, with Portrait xx 591 Notice of, with Portrait i 231 Lyford, M. Ice, The Age of (Cor.) xvi 693 Lyman, O. E. Liability, Some Notes on a Doctor's xviii 769 Patents, Novelty in xv 612 Lyou, Captain. India, Regarding Matters in ii 614 Lyons, A. B. Tides, The (Cor.) xi 748 P. F. Dust, A Shower of xviiii 263 T. A. Meteorology, Ocean xvi 35, 179 M Machinery, Sympathetic Vibrations in. J. Lovering iii 737 Mackay, G. E. Burials, Premature xvi 389 Mackintosh, J. Cyclones in the Universe vii 209 Maclagan, T. J. Typhoid Fever, How, is conveyed xvi 460 Macleod, II. D. Science, Scholastic Prelude to Modern xx 735 Macmillan, Hugh. Lowly Vegetable Forms iii 469 Madagascar, Animal Life in ... vii 738 Madeira as a Health-Resort (Misc.) iii 653 Magnetic Observatory at Madison, Wisconsin. E. W. Davis xii 455 Variations (Misc.) i 254 Magnetism and the Imagination (Misc.) vi 762 Effects of Strain on the, of Soft Iron (Misc.) ix 124 Experiment in, with Needle (Misc.) xiii 380 Mahin, J. C. Science and the Book of Genesis (Cor.) vii 487 Malaria. C. P. Russel ix 416 Vehicles of (Misc.) xiv 544 Malarial Organisms (Misc.) xx 857 Malayan Civilization, Relics of an Ancient (Misc.) v 123 Malformations (Misc.) iv 383 Malo, L. Asphalt, Origin and Uses of xix 539 Mammalia, Brain Development in the (Misc.) v 638 Mammalian Foot, Development of the (Misc.) xx 572 Mammals, Extirpation of our Larger (Misc.) xi 253 New Eocene (Misc.) vii 124 Mammoth ? "Whence came the Arctic (Misc.) xiv 689 Man, Age of Palaeolithic (Misc.) x 250 and Animals, Distinctions between (Misc.) xv 138 and his Structural Affinities. A. R. Grote xiii 429 60 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Man and the Vertebrate Series. C. Morris xviii 783 Antiquity of. A. De Quatrefages i 208 in America (Misc.) ii 638 as an Object of Scientific Study (Ed. Tab.) i 366 as the Interpreter of Nature. W. B. Carpenter i 684 Classification of the Eaces of (Misc.) x 508 Descent of (Misc.) iv 251 Early, in North America. A. E. Grote x 582 D. A. Hulett (Cor.) xi 365 Early Traces of. G. De Mortillet xiv 794 Fossil, of Mentone. Theodore Gill v 641 How Migration changes (Misc.) vi 765 in America (Misc.) xvii 571 in Europe, First Traces of. A. Mueller vi 672, vii 10 in Japan, Ancient (Misc.) xii 377 Migrations of. A. De Quatrefages i 299 Man, Natural History of. A. De Quatrefages : I. Unity of the Human Species i 61 II. Antiquity of Man i 208 III. Migrations of Men i 299 IV. Physical Characters of the Human Eaces ii 541 V. Intellectual Characters v 513 Man, Quetelet on the Science of. E. B. Tylor i 45 Eelics of, in the Miocene (Misc.) iv 254 the Fossil. H. W. Haynes xvii 350 Unity of the Human Species. A. De Quatrefages i 61 Was, preglacial ? (Misc.) xii 381 Mango-Tree in Jamaica (Misc.) xv 283 Mankind, Early Discipline of. Bagehot ii 129 The Eaces of. E. B. Tylor xix 289 Manley, D. V. E. Jigger of Lake Erie Islands (Cor.) xix 698 Mantis, or Praying Insect iv 710 Manurial Value of Spent-Tan and Sawdust (Misc.) xi 507 Map-making, History of (Misc.) xiv 830 Eeview, A. F. D. Y. Carpenter xx 225 Maps and Map-making before Mercator. C. P. Daly xvi 478 Marbles, Antique. J. D. Champlin, Jr xi 67 Marcel, C. Language, Eeason against Eoutine in Teaching vi 322, 470 G. Aborigines, Australian xix 680 Marey, E. J. Locomotion, a Study in xv 317 Markham, C. E. Arctic Ice-Travels vii 468 Marmot, Singing (Misc.) i 509 Marriage and the Family in Danger? Are (Misc.) xx 713 Egyptian, and Animal Worship (Misc.) xx 717 of Cousins (Misc.) vii 508 Theories of Primitive. Herbert Spencer x 272 Views of Primitive. L. Fison xvii 203 Mars. Camilla Flammarion iv 187 and bis Moons. J. Le Conte xvi 82 and its Satellites. D. Kirkwood xi 706 Mars's Fast Moon (Misc.) xiii 383 INDEX OF VOLUMES I TO XX. 6\ VOL. PAGE Marsh, O. C. Address on opening the American Museum of Natural History xii 473 and his PaJeontological Work (Misc.) x 122 Award of Bigsby Medal to (Misc.) xi 252 Birds, Jurassic, and their Allies xx 312 Paleoutological Discovery, History and Methods of xvi 219, 363 Sketch of, hy G. B. Grinnell, with Portrait xiii 612 Vertebrate Life in America, Introduction and Succession of. . xii 513, 672 Marshall-Islanders (Misc.) xviii 278 Marsh-Fevers (Misc.) xi 250 -Odors, Source of (Misc.) xvii 138 Martin, H. N. Biology, Study and Teaching of. x 298 Martineau and Materialism. John Tyndall viii 129 and Tyndall (Ed. Tab.) viii 746 Maskelyne, Professor N. S. Meteoric Stones ii 75 Mason, R. O. Evolution and Immortality vii 46 Vaccination in New York xvi 330 Mason's Science College (Ed. Tab.) xviii 265 Masons' Marks, Significance of Ancient (Misc.) xx 426 Masters, Maxwell T. Battle of Life among Plants iii 75 Mastodon, Skeleton of. H. Butterworth v 94 Matamata, The. E. Sauvage xvi 684 Matches. John A. Garver xi 413 Materialism, Various Views on (Ed. Tab.) iii 644 Howard Crosby ii 182 and its Lessons. II. Maudsley xv 667 and Positivism. W. D. Le Sueur xx 615 Carpenter against (Misc.) ii 124 Martineau and. John Tyndall viii 129 Radical Fallacy of. R. G. Eccles xiii 354 Mathematical Controversy, The (Cor.) x 744 Mathematics, Early Hindoo. E. S. Holden iii 334 in Evolution. George lies ix 202 The Study of (Misc.) vii 758 Matter and Life. TyndaWs Belfast Address (Ed. Tab.) vi 110 and Mind. F. E. White xi 183 Constitution of. F. Papillon iii 547 Force, and Inertia. A. Arnold (Cor.) iv 494 Physical Constitution of. J. E. Hendricks (Cor.) iv 493 Maxim Electric Light (Misc.) xviii 424 Maxwell, J. C. Lightning, Protection of Buildings from x 154 Molecules, The Theory of iv 276 Sketch of, with Portrait xvii 11 6 Mayer, A. M. Animal Movements, Marey's New Results in vi 444 Flying-Machines and Penaud's Artificial Bird viii 453 Henry and Faraday xviii 76 Phonograph, The xii 719 Sketch of, with Portrait x 230 Julius R. Sketch of, with Portrait xv 397 Maudsley, II. Hallucinations of the Senses xiii 698 Insanity, Law and v 77 5 62 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Maudsley, H. Judges, Juries, and Insanity i 440 Medical Profession in Modern Thought x 330 Sex in Mind and in Education v 198 Sketch of, with Portrait vi 612 Mauna Loa, Late Eruption of (Misc.) xii 125 Mauris, M. Carpenters, About xvii 233 Maury, M. F., Death of (Misc.) , . ii 767 Diamonds, Black xiv 337 T. B. Storms, Law of, developed ... ii 385 Weather-Service, International xvi 289 MacCormac, II. Drowning, How to prevent xix 369 McCosh, James. Huxley's American Lectures x 86 Huxley's " Hume," Agnosticism in xv 478 Princeton, Science at (Cor.) xviii 122 Supernatural, Propositions for and against the ix 21 McFarland, R. W. Tides, The (Cor.) xii 105, 491 McGee, W. J. " Climate and Time," Croll's xvi 810 Serpent-Charm xv 841 McLean, W. Eyesight, Study and the xii 74 Mead, C. M. Longevity, Antediluvian (Cor.) xx 842 S. H. Mounds, Curious, in California (Cor.) xiv 233 Theodore L. Insects and Flowers in Colorado (Cor.) xi 104 Measures of Length. R. Hitchcock xix 652 Our Current Weights and (Misc.) xii 375 Meat and Eggs, Comparative Value of, as Foods (Misc.) x 381 Effects of Diseased (Misc.) xvii 572 Liebig's Extract of (Misc.) i 373 Methods of preserving Fresh (Misc.) ix 125 Preservation of (Misc.) i 637 -Supply, Extending the (Misc.) xi 253 Medals, The Rumford (Ed. Tab.) ix 244 Medical Profession in Modern Thought. H. Maudsley x 330 Quackery in the xx 681 Science, Cultivation of. Sir J. Paget xix 774 Science, Signs of Advance in (Misc.) xi 767 Students, Qualification of (Misc.) x 382 Medicinal Doses, Size of (Misc.) xii 126 Medicine, Biological Sciences and. T. II. Huxley xix 795 Chemistry and. Ira Remsen xv 214 Early Practice of, by Women. II. C. Bolton xviii 191 Early Superstitions of. W. B. Clieadle i 95 Romance of. F. Arnold ii 422 Siamese (Misc.) vi 378 Medicine's Debt to Galileo (Misc.) xiv 403 Medicines, Chinese (Misc.) xii 762 Medusa, A Fresh-Water (Misc.) xvii 856 Meehan, Thomas. Evolution (Cor.) x 102 Insects and Flowers in Colorado (Cor.) x 361, 743 Median's Work. E. S. Morse (Cor.) x 363 Meek, F. B., Deatli of (Misc.) xi 382 Meldola, It. Photography, Recent Researches in v 717 INDEX OF VOLUMES I TO XX. 63 vol. r-Anv. Mello, J. M. Rock-Structure ix 426 Memories, Retentive (Misc.) xiv 690 Memory, Remarkable Case of (Misc.) xvi 428 Men, Weakness of Great (Misc.) vii 250 Mendenball, T. C. Typhoon, A Japanese xviii 357 Mental Capacity, Measures of. J. W. Redfield v 72 Disease in Animals (Misc.) xi 639 Exertions, Application of the Law of Probabilities to (Misc.) i 762 Faculties, Strange, in Disease. H. Butterworth viii 177 Habits, Hereditary Transmission of. William B. Carpenter iii 303 Improvement, Science and. J. Le Conte xiii 96 Overwork (Misc.) viii 765 Overwork. R. Farquharson x 326 Overwork under Competitive Prize System (Ed. Tab.) xi 105 Physiology. J. C. Bucknill v 705 Physiology, A Case in (Ed. Tab.) x 235 Power, Brain- Weight and (Misc.) ix 254 States, Bodily Conditions and. C. F. Taylor xv 40 Mercurial Deposit on Animal Teeth (Misc.) xiv 125 Meridian, Carrying a French, into Africa (Misc.) xvii 575 Selecting a First. E. Cortambert xv 156 Merrill, H. Birds, Notes on a Few of our xvii 3S6 Correction, A (Cor.) xvii 692 Merriman, C. C. Chemistry of the Rocks iv 694 Glaciers, The Polar viii 702, ix 178 World-Creations x 701 Merwin, A. G. Education, Mental Discipline in vii 699 Mesmerism and Spiritualism. W. B. Carpenter xi 12, 161 •Messmates, Animal Parasites and „ . . . viii 670 Metal, Another New (Misc.) xv 718 Metallurgy, Japanese (Misc.) x 115 Metals, Behavior of, with Hydrogen (Misc.) viii 254 Professor Thurston on our Domestic (Misc.) xi 636 Metaphysics, Anaesthetics and (Misc.) vi 638 Meteor, A Brilliant. J. Hawkins xviii 696 Appearances attending the Passage of a (Misc.) viii 766 -Shower, October (Misc.) x 253 -Showers, November, 1872 (Misc.) iii 123 The Great Iowa. G. Hinrichs vii 588 Meteoric Display, Expected (November, 1880). R. A. Proctor xvi 247 Stones. N. S. Maskelyne ii 75 Stones, Organic Remains in. F. Birgham xx 83 Stones, The Markings of (Misc.) xviii 282 Meteorites in Olden Times (Misc.) x 634 Mohr on the Source and Composition of (Misc.) ix 382 Organic Remains in (Misc.). . , xx 568 Recent, in France and Italy (Misc.) ii 760 Meteorological (Misc.) x 759, xiii 125, xv 568 Notes (Misc.) xiii 636 Meteorology (Misc.) iv 507, vii 761 and Life (Misc.) vii 508 64 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Meteorology, Arctic (Misc.) viii 124 Contributions to (Misc.) f viii 763 Ocean. T. A. Lyons xvi 35, 179 of the Upper Atmosphere, (Misc.) iii 520 of the Sun and Earth. Balfour Stewart viii 75 Meteors, August. W. F. Denning xviii 178 August and November. H. Schellen i 388 Bodily Injuries from Falling (Misc.) xv 566 Flight and Fall of (Misc.) xv 718 November. I). Kirkwood xviii 542 G. J. Stoney xv 445 Metric Beform. S. Barnett xiii 82 System (Misc.) vi 255 System ? Shall we adopt the xiv 757 "Weights and Measures in Man (Misc.) xi 379 Meunier, S. Geology, Studies in Experimental xvii 200 Lightning, Effects of, on Bock and Soil xx 655 Seeds, Fossil xx 778 Mezieres, A. Galileo, The Trial of x 385 Mice, Musical. S. Lock wood i 323, 510 Singing. Henry Lee xiv 1 02 L. Kennon (Cor.) xiv 673 Michels, J. Microscope, a Home-made viii 95 Michigan, Science at the University of. C. K. Adams (Cor.) xviii 123 Microbes, a Glossary of (Misc.) xx 718 Microcephaly (Misc.) viii 249 Micro-organisms. W. S. Barnard xv 764 Microphone and Magnifying of Sound. A. E. Outerbridge (Cor.) xiv 233 Microscope, a Home-made. J. Michels viii 95 as a Detective (Misc.) vii 248 Microscopes, Australian Compliment to American (Misc.) v 382 Midden, Contents of a Kitchen- (Misc.) viii 379 Migration changing Man (Misc.) vi 765 of Inland Birds. C. C. Abbott vii 183 Migrations of Birds (Misc.) viii 761 of Eaces. F. Mtlller xvi 322 Milk, Adulteration of (Ed. Tab.) vii 110 Condensed, in England. Edward Lankester iii 466 Effects of Cold on (Misc.) ix 635 Insufficient Use of. D. Duckworth xix 491 Yoelcker on the Quality of (Misc.) vi 759 Mill, Education, and Science. Contrasting MilVs and Fpericer's Educa- tion (Ed. Tab.) iv 368 John Stuart. Alexander Bain xiv 697, xv 327, 750, xvi 25, 311, 501 Sketch of, with Portrait iii 367 Miller, W. D. Energy, Availability of xvii 244 Millikin, D. Eye, What the, sees in Beading (Cor.) xviii 262 Mimicry, a Case of Protective. B. W. Barton (Cor.) xviii 262 Mind, as a Measure of Nature. C. T. Ilaviland xviii 681 Evolution and. C. B. Badcliffe id 359 Growth and Decay of iv 328 INDEX OF VOLUMES I TO XX. 65 VOL. PAGE Mind, Matter and. F. E. White xi 183 Max Miiller on the Origin of (Ed. Tab.) xiii 111 Relations of Body and (Ed. Tab.) iv 111 The Practical Study of (Ed. Tab.) xx 554 -Reading. A. E. Outerbridge, Jr. (Cor.) xii 362 -Reading by the Ear. George M. Beard (Cor.) xi 362 -Reading, Physiology and. George M. Beard x 459 Mineral Collecting (Ed. Tab.) vi 112 Products, Centennial Display of (Misc.) viii 251 The New, Peckhamite (Misc.) xviii 861 Minerals, Action of Organic Acids on (Misc.) xvi 710 Artificial Production of (Misc.) xviii 857 Spang Collection of. A. R. Leeds iv 443 Miners, Diseases of (Misc.) xviii 717 Mining in Colorado (Misc.) . xvii 287 in North Carolina, Prehistoric (Misc.) xviii 568 Minnesota Academy of Sciences (Misc.) xix 131 Minot, C. S. Circulation, Changes of the, during Mental Activity. . . . xvii 303 Miracles, The Marpingen xii 724 Mirage on Swiss Lakes (Misc.) xviii 286 Mississippi, How the, wears away its Banks (Misc.) ix 380 Mistletoe (Misc.) iii 397 Mites, Ticks, and other Acari. E. R. Leland xiv 502 Mivart, St. George. Bats? What are ix 523 Kangaroo, Natural History of the viii 409 Moa-Bird, The Gigantic xii 87 Fossil Remains of the (Misc.) vi 379 Moas, Reported Discovery of Living (Misc.) vi 765 Mogador, Climate of (Misc.) xv 859 Mohr, Friedrich. A Glass of Water i 655 Freezing of Plants and Animals iii 96 Sketch of, by F. Hoffmann, with Portrait xvii 402 Moisture, Distribution of Atmospheric vii 483 Molecular Dynamics. L. R. Curtiss .... xiv 373 Forces, Crystalline and. J. Tyndall vi 257 Magnitudes. L. R. Curtiss xi 653 Theory. Le Roy C. Cooley xv 462 Molecule ? What is a xix 688 Molecules, The Theory of. Clerk Maxwell iv 276 Mollusks, Capture among the xvii 111 Fresh-Water. E. S. Morse vii 563 of the Rocky Mountains, E. Ingersull ix 43 Molten Iron, Floating of Solid in (Misc.) vi 633 Monarchy and its Drawbacks xv 545 Monas Prodigiosa (Misc.) ii 249 Monera, and the Problem of Life. E. Montgomery xiii 455, 563, 677 Moners, Bathybius and the. E. Haeckel xi 641 HaeckeFs. Aime Schneider iv 181 Money, French Experience with Paper- (Ed. Tab.) ix 615 Monkey, a New Species of (Misc.) xii 507 Intelligence of a Pet (Misc.) xvi 714 5 66 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Monkey, The Pygmy. E. Oustalet xiii 184 Monkeys' Dislike of Snakes (Misc.) xiii 379 Fossil (Misc.) iii 519 from a Cold Climate vii 665 Illustration of Sagacity of (Misc.) x 254 Monogamy. Spencer's and Morgan's Views (Cor.) xii 623 Monroe Doctrine, The. Discussion of the Panama Canal (Ed. Tab.) . . . xvi 842 Monstrosities, Cause of (Misc.) ix 123 Mont Blanc, Discovery of (Misc.) xii 506 Mont Cenis Tunnel, Geology of (Misc.) iv 253 Montgomery, E. Monera, and the Problem of Life xiii 455, 563, 677 Moon, Changes on the (Misc.) xviii 710 Is the, a Dead Planet? x 568 Mountains of the xx 688, 830 (Ed. Tab.) xx 556 The iii 756 Moquis Indians of Arizona. O. Loew v 35 1 Moral Contagion. Dr. Despine i 618 Sense in the Lower Animals. W. L. Lindsay xvi 346 Sense, Origin of the (Misc.) xii 378 Morality and Evolution (Ed. Tab.) xv 124 Goldwin Smith on Scientific (Ed. Tab.) xx 844 Science and. Goldwin Smith xx 753 Morals, Civilization and. J. N. Lamed xi 549 Goldwin Smith on (Ed. Tab) xvi 267 Morey, C. A. Zodiacal Light (Cor.) xi 617 Morgan, L. H. Obituary Notice (Misc.) xx 569 Sketch of, by J. W. Powell, with Portrait xviii 114 Mormonism from a Mormon Point of View. D. Wedderburn x 156 Morphia, Danger of the Hypodermic Use of (Misc.) xvii 425 Morris, C. Eat, To, and to be Eaten xx 609 Evolution of Organic Form xviii 80 Man and the Vertebrate Series xviii 783 Morrison, M. G. Deaf, The Horace Mann School for the xix 84 Morse, E. S. Animals, Wild, as Man's Associates xx 528 Dolmens in Japan xvi 593 Evolution, What American Zoologists have done for x 1, 181 Fermentation and Disease (Cor.) xi 363 Health -Matters in Japan xii 280 Japan, Science Lectures in xiv 388 Japan, Trace of an Early Race in xiv 257 Lectures (Ed. Tab.) iv 242, x 619 Meehan's Work (Cor.) x 363 Mollnsks, Fresh-Water vii 563 Sketch of, with Portrait xiii 102 The Work of (Ed. Tab.) i H5 Morselli, Dr. Suicide, Catholicism, Protestantism, and xx 220 Mortality in Different Pursuits (Misc.) xix 716 Infant (Misc.) iii TS2 of the Negro (Misc.) vii 246 Mortillet, G. De. Man, Early Traces of. xiv 794 INDEX OF VOLUMES I TO XX. 67 VOL. PAGE Mosses. " Lowly Vegetable Forms." Hugh Macmillan iii 469 Moth, A. that bores for its Food (Misc.) ix 250 Boring, Discovery of a Species of, in Florida. A. E. Grote (Cor.). . ix 49-1 Moths, Variation in the. A. R. Grote x 223 Motion, Constancy of. George lies x 225 Optical Illusions of. S. P. Thompson xviii 519 Motors, Domestic. C. M. Lungren : I. Wind and Water Power xviii 217 II. Steam and Hot- Air Engines xviii 323 III. Gas and Electric Engines xviii 483 Moulds, Our Common. B. D. Halstead ix 398 Mound-Builders (Misc.) xix 128 P. J. Farnsworth (Cor.) xx 267 A Relic of (Misc.) ix 510 Graves of the (Misc.) xii 638 Inscriptions of the (Misc.) xx 421 ? AVho were the (Misc.) xx 137 -Formations in California, Origin of Certain (Misc.) xv 856 Mounds, Curious, in California. S. H. Mead (Cor.) xiv 233 Le Conte on Origin of Western (Misc.) v 506 Mountain-Chains, Formation of (Misc.) ix 253 -Sickness, Whymper's Experiments with (Misc.) xix 569 Mountains, Age of the Green (Misc.) xvi 858 Formation of. xiv 460 How, are made (Misc.) xiii 762 of the Earth, The Highest (Misc.) xvii 859 Mount Marcy, Winter Fauna of (Misc.) ix 509 Seward, Ascent of (Misc.) i 636 Mouse and a Scorpion, Fight between a (Misc.) ix 377 Mouths, How we keep our, shut (Misc.) vii 630 Movements, Marey's New Results in Animal. A. M. Mayer vi 444 Mozley, Dr. J. B. Modern Literature in the Higher Education i 396 Mucilage on Glass, Curious Action of (Cor.) v 624 Mudge, Death of Professor B. F. (Misc.) xvi 569 Mud-Minnow, Breeding Habits of. S. E. Wilber (Cor.) iv 744 Mueller, A. Man in Europe, First Traces of. vi 672, vii 10 Muir, M. M. Pattison. Chemistry, The New, a Development of the Old xvii 393 Phenomena, Residual xv 101 Muller, F. Migrations of Races xvi 322 K. Facial Anomalies vi 73 Max. Horses' Ribs, A Curious Question of vii 214 Mummies, Aliaskan and Aleutian (Misc.) vii 630 Mummy, Studies of a (Misc.) xiv 404 Murder, Curious Discovery of a (Misc.) xvii 857 Muscular Power, The Source of xii 729 The Source of. H. P. Armsby xv 812 Structure of the Hands and Feet (Misc.) vii 757 Museum Excbange, A. B. G. Wilder viii 460 Godeff roy. H. A. Ward '. viii 699 Museum of Natural History, Addresses of Eliot and Marsh at Opening of American xii 473 68 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Museum, Opening of American, of Natural History (Ed. Tab.) xii 501 Reform, Boyd Dawkins on (Misc.) xii 125 Warren. H. Butterworth v 94 Museums of Europe. T. M. Brewer xi 472 Mushrooms, Edible. T. F. Wood xi 366 The Growth of (Misc.) xiv 125 Toadstools and their Kindred. E. A. Youmans vii 129 Music, Cause of the Pleasure from (Misc.) xv 5G8 Oriental. S. A. Pearce xviii 237 Musical Tones, Perception of (Misc.) ix 382 Musk-Bison, The (Misc.) xiv 122 Musk-Rats, Curious Method of capturing (Misc.) vii 125 Mutilations and Heredity (Cor.) xiv 233 Myer, A. J. Sketch of, with Portrait xviii 408 Myriapods. Major Holland ix 570 N Nails as a Diet (Misc.) xiv 692 Narcotics, Chloral and other. B. W. Richardson xv 491, 646 The Use of vii 611 "Nation," The, on TyndaLTs and Henry's Researches on Sound viii 477 Nature and Nurture, Relative Powers of, as illustrated by Twins. Francis Galton viii 345 God and. Lord Bishop of Carlisle xvii 27 Limits of our Knowledge of. E. Du Bois-Reymond v 17 Mind as a Measure of. C. T. Haviland xviii 681 Professor Wurtz on the Order of (Misc.) vi 764 Religious Recognition of (Ed. Tab.) xiv 392 The Mechanics of (Misc.) xii 763 The Order of. Discussion arising from Huxley's Lectures (Ed. Tab.), x 748 Natural History, Agassiz's School of (Misc.) iii 123 History, Clews in. A. Wilson xv 14 History, Peabody Museum of (Misc.) v 638 History, Progress of (Ed. Tab.) vii 749 History School on the Great Lakes (Misc.) x 766 History, Summer Schools of (Misc.) xvii 279 History Studies, Gladstone on (Misc.) xv 573 Science, Backwardness of the Ancients in. Carl von Iittrow ix 438 Science, Buffalo Field-Club of (Ed. Tab.) six 265 Science Establishment, Ward's. Joseph Leidy xvi 612 Sciences, Academy of, of Philadelphia (Misc.) ix 506 Sciences, Academy of, of Philadelphia. W. S. W. Ruschenberger (Cor.) ix 747 Selection, Doctrine of. A. R. Wallace iii 22 Selection in Politics. D. H. Wheeler iii 230 Naturalists' Club, A Field- (Ed. Tab.) xviii 415 Felicity of xviii 821 Navigation (Finding the Way at Sea). R. A. Proctor iii 717 Near-Sightedness in Schools, Production of (Misc.) xi 122 Nebula, Great, in Orion. R. A. Proctor hi 564 in Sagittarius. E. S. Ilolden viii 269 '.-, ■ INDEX OF VOLUMES I TO XX. 69 VOL. PAGE Nebula of Orion, Telescopic Research on the. E. S. llolden v 257 To the Ring- (Poem). J. L. Stoddard xii DO Nebula), Constitution of. H. Schellen iii 129 Constitution of the (Misc.) xii 118 Formation of. W. M. Davis xiii 339 Variability of the (Misc.) xiii 251 Nebular Hypothesis. J. Le Conte ii 650 Negro, Increase and Movement of the. J. S. Patterson xix 665, 784 Intellectual Condition of the Savage (Misc.) xx 139 Negroes in China (Cor.) xix 843 Neison, E. Telescope, Most Powerful, in Existence xvi 337 Nerves, Action of the Retinal (Misc.) xi 381 Beginning of, in the Animal Kingdom. G. J. Romanes xiv 303 Mode of Termination of, in Muscles (Misc.) xviii 853 Transmission of Excitations in Sensory. Paul Bert xi 230 Nervous Conditions, Muscular Expression of. F. Warner xx 584 Depression, Indigestion as a Cause of. T. L. Brunton xviii 226, 374 Nervousness, Curiosities of (Misc.) xv 282 Neuralgia, Mechanical Vibrations as a Remedy in (Misc.) xix 280 Storms and (Misc.) xv 281 Newberry, J. S. Geological Survey of the Fortieth Parallel xv 302 Ice Period, Causes of the Cold of the ix 280 New York Island and Harbor, Geological History of xiii 611 Sketch of, with Portrait ix 490 New Caledonia, Commercial Products of (Misc.) xiv 834 Newcomb, S. English Honors to (Misc.) v 125 Sketch of, with Portrait xi 612 New Guinea and its Inhabitants. A. R. Wallace xiv 742, xv 57 and its People. W. G. Lawes xx 324 Natural History in (Misc.) ix 767 Population of (Misc.) iv 632 Stone- Age Civilization in (Misc.) xix 429 New Jersey, Arrow-Heads in (Misc.) i 253 Asphalt and Amber in the Mud of (Misc.) xvii 718 New Mexico, Zufii Indians of. F. Kett v 580 Newton, An Unpublished Letter of Sir Isaac (Misc.) xix 572 The English Precursors of xvii 669, 777 New York City College (Ed. Tab.) xiii 106, xvi 695 Sanitary Problems of (Misc.) xvii 419 Island and Harbor, Geological History of. J. S. Newberry xiii 641 Relics of an Ancient Race in Eastern (Misc.) xvii 2S6 New Zealand, Climatology of (Misc.) ix 119 Niagara (Misc.) ii 249 Gorge, Age of the (Misc.) vii 631 Some Observation on. John Tyndall iii 210 The Past and Future of. W. D. Gunuing i 564 Niaudet, A. Electric Candle, The xi 429 Nicaragua, A Naturalist in ' v 89 Marine Fishes in Lake (Misc.) xii 380 Nickel-Ore, Occurrence of (Misc.) x 120 Niemeyer, Paul. Open Air and Health xii 216 7o THE POPULAR SCIENCE MONTHLY. VOL. PAGE Niger, Source of the (Misc.) xvi 860 Night-Schools in New York and Paris. A. H. Ehine xvii 681 Nile, The, and its Ancient Channels (Misc.) xvii 861 Nisbet, 0. Pessimism and its Antidote xi 682 Nitchy, F. A. Trade, First Stagnation of (Cor.) xii 106 Nitrifying Organism (Misc.) xiii 638 Nitrogen, Absorption of, by Plants (Misc.) x 510 of the Soil (Misc.) v 765 used by Plants, Source of the (Misc.) viii 503 Nordenskjold's "Work (Misc.) xvi 137 Nordhoff, W. Hanoverian Village Life xvi 467 Normal Schools. Agassiz's Penihese School of Natural History (Ed. Tab.) iii 113 Northern Exploring Expeditions (Misc.) i 508 Norton, H. B. Ice, The Age of. xv 833 Ice, The Age of (Cor.) xvi 534 Nostalgia. F. Papillon v 215 Notation, Curious Systems of. T. F. Brownell xiii 420 Notes : Mechanism of Thought ; Aerial Navigation ; Explanation of Show- ers of Blood ; Value of Vaccination ; Nitrate of Ammonia in Res- piration ; Dr. Livingstone ; Lead-Poisoning by Hair-Dyes i 128 Reproduction of Elbow-Joint after Resection ; Failure of Oxygen- Light in Paris ; Apparent and Real Death ; Snakes in the Na- tional Natural History Collection ; Fossil Skeleton of a Man near Meudon ; Petroleum as Fuel ; Wastefulness of Iron Furnaces ; A new Ship-Light; Tannate of Quinine instead of the Sulphate; Mammoths found in Siberia ; "Water-proofing Leather ; Sir H. Davy ; Benzole and Benzine ; A Pianist's Memory ; Bread made with Sea-Water for Dyspeptics ; Anassthetics in Veterinary Sur- gery ; Removal and Replacement of a Tooth ; Curious Case of Sweating; Photographs of the Sun; Arsenic in Carpets; Chest- Development due to Gymnastics; Lithofracteur in Wrecking; Large Earth-Worms ; Fossil Horses ; Opposition to Vaccination. . . i 253 Hatching Fish-Eggs ; Catoptric Lamps ; Exposure of Spiritualist Tricks ; Shellac Cement ; Coloring-Matter in Fungi ; Resistance of Living Muscle to Electric Current ; New Fossil Fish ; Insoluble Glue; Church-Bells from Cannon; Action of Light on Minerals; Grain Storage ; Morphia in Cholera ; Horned Frog ; Disposal of the Dead ; Ostrich Copper-poisoned ; Death of Professor von Mold ; Earthquakes i 383 The Three States of Matter ; Iodine in Sea- Water ; The Weather and Condition of the Insane; Animal Charcoal; Temperance Question in France ; New Safety-Valve ; Machine for fattening Fowls ; Ex- cessive Use of Tobacco; Energy required to raise Water 1° ; Join- ing Pieces of Caoutchouc ; Influence of Atmospheric Pressure on Animals ; Gold Medals to Grandidier and Ilouzeau i 511 Prize for Essay on Dynamic Electricity; Statue to Harvey; Revolu- tion of the Sun ; Carbonic Acid in Air; Effect of Alcohol on Fowls; Number of Eggs a Hen can lay ; Observations of the Higher At- mosphere; Introduction of Salmon in the Delaware; Rate of Transmission through the Cable; Young Shad in Lake Champlain. i 640 IXDEX OF VOLUMES I TO XX. 7i Notes : vol. facie. Temperance Reform ; Effect of Contained Air upon the Boiling- Point ; Astronomical Observations in India ; Foundering of the Calderon ; Necessity of Iron in the System ; Bisulphide of Carbon Engine ; Coloring-Matter of Blood-Corpuscles ; A New Flux ; Law of Variety; Adulteration of Soap; Ancient Mounds; Printing- Chronograph ; Soil Analyses and their Utility ; New Photo-Print- ing Process ; Caterpillar Extermination ; Cholera ; Astronomical Photographs ; Cause of Red Color in White-Lead i 767 "Wonders of Insect-Structure ; Signs of Eruption in Vesuvius; Saline Solutions on Lead ; New Alloy ; Reproducing Drawings ; Sulphuric Acid in Fermentation ; Coal-Gas and Vegetation ii 128 Non-inflammable Fabrics ; Paper Lamp-Shades ; Progress of Chem- istry; Coal in Ireland; Heat by Arrest of Lead Bullet ; Paper from Wood; Mimicry in Insects; French Meteorological Observations ; Fungus on the Opium Poppy ; Timber-Planting in the West ; Hops in England ; Correction of Article " Coal as a Reservoir of Power " ; Sulphur from Iron Pyrites, and Manufacture of Sulphuric Acid. . . ii 255 Volcano of Santorin ; Village on Piles in Java; English Sparrows in Australia; The Dolmens of Algeria; Microscopic Photography; Coal-Mines in Great Britain; Luminosity of Fungi; New Method of printing on Cloth ; Cement from Sewage ii 384 Huxley's Health ; Australian Beef in New Orleans ; Liquid Glue ; Monster Steam-Hammer ; Collecting Water at Different Depths of the Sea; Impure Water and Diarrhoea; Tin-Foil Substitute for Wall-Paper ; Water-Wagtail caring for Young Cuckoo ; Orange Cultivation in Louisiana ; Iron-Ore in Missouri ; Death of F. Wel- witsche ; Cholera communicated by Water; Brittle Gold; Vol- umes and Manuscripts in Jardin des Plantes ; Whitebait ii 511 Effective Way of assisting the Poor ; Electrical Machine, Experi- ment ; Malaria ; Beavers in Mississippi ; Potato-Disease ; Sea- Weed ; Cause of Blue Color of the Sky; Compressed Bone-Dust ; Remedy for Echoes in Public Halls ; Duplex Telegraphy ; Spirits from Mosses ; New Safety-Lamp ; Platinum Coinage ii 639 Mont Cenis Tunnel ; Tobacco and Intellectual Ability ; Horse-Meat in Geneva; Ancient Weather Statistics; Paper for Sausage-Skins; Milk Adulteration; Average Life of Academicians; Borax for Hoarseness; Population of the Globe; White.Heat in Resuscitating in Drowning; Asphalt Pavements; Salmon in Ireland ii 768 Monument to Priestley; Living Fish sent by Mail; House-Fly carry- ing Contagion ; Plant Sensitive to Sound; A Pauper's Will; Ber- lin's Poor ; Mexican Oysters in California ; English Railway Laws ; Self-Cannibalism in a Cricket ; Substitute for Quinine iii 128 Population of France; Bromide of Potassium for Convulsions; Oph- thalmia in Pauper Children; Death of OF. Durant; Petroleum in Ecuadjr; Improvement of the Davy Lamp; Double Eiigs; Sun- flower-Oil; A New Magnet; Effect of Oxygen on Fruit ; Effect of Supporting on the Growth of Fruit ; Longevity in England ; Sequoia in England ; Tempering Bronze by Ancient Egyptians ; Nickel in Missouri ; Flour from Potatoes ; Chinese Tin-Foil Deco- ration ; Plumbago in Missouri ; Contents of a Lunatic's Stomach, iii 255 Russian Castrates ; New Barrel Machinery ; Population of Great 72 THE POPULAR SCIENCE MONTHLY. is otes : V0L- PAGE Britain ; Odor of Cedar ; Berthelet elected to the French Acad- emy ; Interchangeable Parts in Machine Production ; Death-Rate in Russian Factories ; Comets ; Huxley as a Lord Rector ; New- Geological Museum; Population of the United States; Jews in Germany iii 399 Man-eating Fly; Curious Case of Prenatal Influence; Increase in Demand for Scientific Books ; Rate of Heart-Beats ; Insanity in the United States ; Curious Ant ; Large Mushroom ; Taxation of Sci- entific Institutes in England ; Memorial Volume to Liebig ; Con- sumption of Tobacco in England ; Population per House in Cities of the United States ; New Russian Railway ; Epizooty among Pick- erel ; English University Education ; North-Pole Expedition iii 527 School of Cookery; Sound heard One Hundred Miles; Railway to India; Ferrier's Studies of Monkeys ; New Source of India-Rubber ; Acclimatization Society of Cincinnati ; Blood of the Insane ; Com- mercial Frauds ; New Species of Lizard ; Pronunciation of Bage- hot's name ; Indelible Photographic Proofs iii 655 Eddystone Lighthouse; Madagascar; Safety of Railway-Travel; Detecting Organic Matters in the Air ; Submerged Forest in the Thames; Red and Black Ants of Africa; Life in Greenland ; Co- agulation of Albumen by Cold Water ; Sedatives for Children ; Gold in Finland iii 783 Expedition to Egypt; Oxygen in Asphyxiation; Vine-Leaves for Silk -Worms; Ventilation of the Vienna Opera-House ; Meats packed in Carbolic - Acid Paper; Mineral Wealth of Burmab ; The Mauser Gun ; Fossil Plants of Germany and Austria ; Thirty- five-Ton Guns ; Sea-Island Cotton-Seed for Egypt iv 128 Mortality of Coal-Mine Accidents; Introduction in England of "Peals of Bells"; An Aged Grape- Vine; Permanence of Dyes; A New Currency; Potash Salts in Soil; Tea Drinking ; Meeting of Italian Savants ; Mortality of Lung-Diseases ; Fires from Electricity ; Horses eaten in Paris iv 256 Correction of Hooker's Biography ; Animals bred in Central Park Menagerie; Iron-Ore in Minnesota; Dr. Livingstone; Anatomical Specimens at Vienna Exposition ; Obituary, Dr. F. Grace-Calvert ; Virginia Oysters in England ; Lunatics in England ; Hertz Tor- pedo; Malaria on the Amazon; Sensitive Thermometer iv 383 Mortality of Different Cities; Remedy for Phylloxera ; Fracture of Bells; Pine-Leaves in Upholstery; Lead in Caps of Mineral-Water Bottles; Fire-Panic as Cause of Insanity; Preparing Specimens; Mortality from Fever in India; Lighthouses in the United States; Setting out Plants ; Camphor- Wood ; Ixtle-Fibre ; Vegetarianism and Health iv 511 Sand-Blast for Cleaning; Mercury in the System; Census of Ceylon ; Iron-Ore in Minnesota; Gold in New Zealand; Canal-Boat Trials; Eucalyptus as a House-Plant ; Italian Association of Alienists; In- fluence of Science ; Bessemer Steel ; A Great Botanical Work ; Coal-Supply of the World ; Silber Light iv 639 Honor to Professor Henry; New Fossil Man; Difference between the Fur-Seal and Sea Otter; Death of Max Schultze; Yellowstone National Park ; Improvement in Steel ; Archaeological Discover- INDEX OF VOLUMES I TO XX. 73 .Notes : vol. page ies; Preparation for stopping the Flow of Blood; A Polyp in the Jardin d'Acclimatation ; Experiments of Fuel-Economizers ; So- ciety for Encouraging Explorations ; Ferrier's Study of Monkeys' Brains. . iv 7G7 Petroleum at Green Eiver ; Cremation ; Warren's " Silk-Culture " ; Moth and Mildew Preservative ; H. A. Nicholson's Appointment; The Precious Metals; Sphseralcea Acerifolia ; Medal to Professor C. V. Riley ; New Association of Natural History ; Emery v 128 Dr. J. McNaughton ; "White-Willow for Fencing ; Canine Mail-Car- rier ; Philadelphia Zoological Society ; Fungus on Roots of Plants ; Contents of an Ancient Mound ; Asphalt Pavements ; Analysis of Asparagus-Shoots; Chemically Pure Iron; Sand -Blast in Slate- Quarrying; New Eailroad Signal-Lantern; Protection of Harness ; Vaporization of Iron ; Keeping Cut Flowers fresh v 255 Kangaroo-Skins ; Cockroach Destroyer ; Father Secchi ; Revival of Abandoned Oil-Wells ; Count Rumford's Birthplace ; Discovery of Coal in England; Poggendorff 's Annals; Pension to Pasteur; Death of John Bachman ; Death of P. A. Hausen v 383 Meeting of American Association ; Chickens cared for by a Cat ; Sew- age Utilization; British Association Meeting; Wine Production; Death by Petroleum Explosions ; the Octopus as Food ; New Geo- logical Survey of Pennsylvania; Potato-Fungus; French Associa- tion Meeting ; New Artificial Stone ; South Kensington Exhibition ; Phylloxera ; Corrosive Sublimate for Rats ; Prevention of Heat Radiation from the Earth, by Snow ; International Congress of Prehistoric Archaeology v 511 Correction of Article " Development of Psychology " ; British Social Science Association; Prizes to Lady Students; Mr. Lick's Gift; Phylloxera Vastatrix ; Iron-Ore in Missouri ; Hayden's Exploring Expedition ; D'Albertis's Natural History Collection ; Preservation of Insects ; Cotton planted in California ; Alphonse De Candolle ; Two Scientific Expeditions; Wine necessary v 640 Hartt's Expedition to Brazil ; Entomological Club ; Largest Tree in Ohio; A New Comet; Fine Gold and Platinum Wires; Canine Sagacity ; Effect of Drought on Fish ; Petroleum Pipe-Line ; Steam-Whistles on Railroads ; Agassiz Memorial Fund ; Boyden Prize for Investigations in Radiant Energy; Priestley Centennial Meeting ; Monuments to Liebig ; Washington Signal-Office ; Ice- landers in Alaska; Coal in Japan; Cholera in France; Wines freed of Acid; Hydrates of Mercury; Rope Tramways; Profes- sorship of Textile Industries ; Cremation ; Unhealthiness of Ber- lin ; Borelly's Comet ; Discovery of the Value of Albumen as a Mordant; Two Scientific Expeditions; Coal-Gas and Plants ; Error in Thermometers ; Lunar Rainbow ; Sanitation in Rome ; Chilian Standard of Medicine; Phosphorescence; Iridium, Curious Phe- nomena in; A Stone-Age Flute; Forty-seventh Congress of Ger- man Naturalists v 7G6 Army Food ; Oriental Studies ; Exhibition of Useful Insects and their Productions; Death of J. Wyman ; Austrian Polar Expedi- tion; Solid Matter in Air; New Mode of using Chloroform; Rock- Destruction; Electro-Magnetic Copying-Machine; French Transla- 74 THE POPULAR SCIENCE MONTHLY. NoteS : VOL. PAGE tion of Seth Green's Trout-Culture ; Education in Russia ; Salaries of San Francisco Teachers ; Steam Forest Clearing ; Cope's Work with the Hayden Survey, 1873 ; Leather from Intestines ; School Libraries in France ; London Water-Supply ; Toad-eating Snakes; To remove Grease-Spots; Work of British Meteorological Society; Guizot ; New Cremation Furnace; Thallium ; Tooth of a Masto- don; Prohibition of Scientific Communications in the French Army; Wolfe Memorial Gift; New Polar Expedition; Aniline Col- oring in Hair-Oil ; Signal-Office Forecasts ; Liebig Monument ; Sandstone Anvil ; Wine without Grapes; New Term for Scientists, vi 126 Rapid-Transit in New York ; Quick Cable Dispatch ; International Exposition in China; Virchow and Miracles; New Guinea Rep- tiles ; Wasps and Colorado Beetle ; Peat-Fuel ; Victims to Malaria during Construction of the Panama Railroad; Twelve Inches of Rain ; Library at Blackwell's Island ; New Microscopical Society ; Tobacco in France ; Boerhaave's " Secrets of Physic " ; French Association of Science ; Another Jesse Pomeroy vi 255 Powell Survey; Work on North American Mammals; Bathing in the Middle Ages ; Remedy for Smut in Wheat ; Medical College for Women ; Tea-growing in France ; New Classification of Plants ; Lichens as a Test for Purity of Air ; Memoir by Simon Newcomb ; Phylloxera; Professor Marsh's Expedition to Colorado; Weeping- Willow ; Mortality of Negroes; New Barometer; Elongation of Iron by Magnetization ; European Vines in United States ; Reg- ulation of Seal- Fishing ; Variations of Ozone in the Atmosphere ; Death from a Hornet's Sting ; Penetrating Power of Mycelium of Mushroom ; Publishing Scientific Discoveries ; Air along the Line of the London Underground Railway ; Number of Eggs in the Stur- geon ; Poisonous Colors in Wax-Tapers ; Tapewoums ; Purification of Water by passing through Iron Pipes ; Blue Gravel ; Danger of Paris-Green; Death of Dr. Edward Smith; Death of Dr. Edwin Lankester vi 382 Professor Marsh's Black Hills Collection ; Lick Telescope ; Phylloxera in Switzerland; Ancient Burial-Places in North Carolina; Sup- posed Fossil Remains in Ohio ; Discharge of a Leyden Jar ; A Mile Tunnel ; Minnesota for Consumptives ; A Botanical Prize ; Vocal Powers of Ants vi 512 Disease-Proof Potatoes ; Collection of Professor Wyman ; Iron and Coal in Texas ; Fire-Proof Colors ; New Method of casting Statues ; Horses in the Palaeolithic Period ; Rivotite ; The Time Sugar has been in Use ; Effect of Snake-Poison ; Copley Medal to Pasteur ; British Polar Expedition ; Goats and Phosphoric Acid ; Ozone and Water; Rubber Shoes for Horses; Turnips on Land previously sown with Opium-Poppy ; Types of Germans vi 639 Dictionary of Academies, Societies, etc.; World's Production and Consumption of Paper ; The Age of Bronze; Disposal of Sewage; Utilization of Tidal Movements; Disinfectants; New Tonic Modi- cine; Fertilization of the Gentian; Death of Sir Charles Lyell; Death of F. Kiernan ; German Polar Expedition ; Agricultural Education in Scotland; Aniline Colors in Candies; Spontaneous Combustion of Coal; Endowment of Research in Germany; INDEX OF VOLUMES I TO XX. 75 JN otes '. VOL. TAGE Woman One Ilundred and Eleven Years old ; Mailable Matter in the United States ; Water Storage on the Upper Hudson ; New Sci- ence Association in Ohio ; Leaden Pipes and Rats ; Paper from Various Substances ; Agassiz Monument vi 7G6 Improved Pneumatic Telegraph ; Death of J. E. Gray ; Death of F. W. A. Argelander; Unrelated Facts in Natural History ; Manual for British Arctic Expedition ; Grasshoppers and Fruit-Trees; The Feet ; Agassiz Memorial Fund ; Mumbo Jumbo ; Death of D'O. D'Halloy ; Introducing Eastern Fish in Western Waters ; The Chinch-Bug; Peat-cutting Machine; Novel Heating Apparatus for Arctic Explorers; Professor Huxley; "Mind," a New Periodical; Monument to Scheele ; Novel Bell vii 127 Gas Carbon ; Adulteration of Tobacco ; Trees and Dry Seasons ; An- timony in California ; Preservation of Wooden Posts ; Prolonged Fasting; New Mammalian Genus; Ly ell's Bequest to the Brit- ish Geological Society; International Congress of Americanists; Brittleness of Iron at Low Temperatures; Medicated Candles; Petroleum Fuel on Steamers ; Canada Rice-Grass for Paper ; In- flammability of Drunkard's Flesh; Death of Robert Willis; Popular Interest in Science ; Influence of Turf on Temperature of the Soil ; Chloral Hydrate in Sea-Sickness ; Recognizing Scientific Services ; Potato-Fungus; Overproduction of Grapes in California; Oxides of Nitrogen ; Professor Whitney in England ; Sea-Water for Street Sprinkling ; Dynamite for Breaking up Old Cannon vii 255 Formation of Graphite ; Aniline Colors free from Arsenic ; Limit of Temperature in Combustion; Sckweinfurth's Appointments at Cairo; Sensations, Time required for ; Captain Boy ton ; Hanged for producing Abortion; Prohibitory Duties at the Centennial; Scientific Association at Peoria; British Association; Donation to Philadelphia Academy of Natural Sciences; Death of D. Hanbury; Bremen Polar Expedition; Penikese School of Natural History; Medal to Captain Hall ; A Backward Spring ; Prize to J. P. Petti- grew ; Mortality of United States Cities ; Boiling Lake in Domini- ca; American Association Meeting; Weather Forecasts; Artificial Isthmus between France and England; Dog dying of Measles; Microscopic Club; Return to Bloodletting in Medical Practice; Air contained in Soil ; New York Academy of Sciences; Weight- ing of Black Silks; Great Cyclopasdia in China vii 382 Errata; Three New Scientific Associations; Admiral S. Osborn; Lung- Disease among Horses; Death of Joseph Winlock ; Fifteenth Meeting of the National Educational Association ; Information se- cured by the Committee testing Iron and Steel ; New Book by A. R. Wallace; Medal to Mary Putnam-Jacobi ; Hatching Sturgeon-Eggs; Swedisli Arctic Expedition; Geological Discovery in Canada; For- ests and Rainfalls ; Election of Paul Bert to the French Aeronauti- cal Society ; Geological Survey of California ; Wire-Gauze Specta- cles ; Risks of Arctic Travel; Railways affecting Caste in India; Mean Height of Europe; Carbonic Oxide in Tobacco-Smoke; Vaccination in India; Impure Mineral Water; Transmission of Disease from Human Beings to Domestic Animals ; Norwegian Deep-Sea Exploration ; Canine Sagacity ; New Species of Crus- 76 THE POPULAR SCIENCE MONTHLY. Notes : vo-l. page tacea ; Recovery of the B ody of J. Blackford on Mont Blanc ; Shad-Culture on the Delaware ; Poisoning by Colored Socks; Leg- islation, on Vivisection ; Destruction of Library of tbe J. J. Au- dubon vii 510 A New Feature of Industrial Exhibitions ; Novel Snow Spectacles ; Royal Agricultural Society of England ; Phylloxera in England ; Bean's Pneumatic-Electric Gas-Lighter ; Egyptian Geographical Society ; Ligbtning-Stroke ; Cactus for Paper-Pulp ; Sunday Law and tbe Brighton Aquarium ; Antiquity of Man ; Mortality from Cold; Buffalo-Gnat; Yellow-Bird's Nest; Death-Rate of United States Cities ; Archaeological and E'.bnological Collection from Peru ; Death of Sir W. E. Logan vii 639 Protecting Birds ; Prize for Substitute for Plaster of Paris ; Births in Boston ; First Hindoo Human Dissector ; Icebergs in the North Atlantic; Captain Lawson ; Mica-Mine in Utah ; Zanzibar Ants; Insulation of Cables injured by Minute Crustacean ; Unknown Mi- lages in Syria ; Death of H. d' Arrest; Death-Rate of Memphis; Standards of Weights and Measures; Singular Marriage Custom of the Balantes; Smithsonian Contribution to the Centennial ; Micro- scopic AlgS3 ; Height of tbe Pre-Miocene Alps ; Fungus on tbe Opium-Poppy; Antiseptic Properties of tbe Eucalyptus vii 767 Drive- Wells in extinguishing Fires ; Chaparral- Hen ; Large Mass of Copper; Death-Rate in the United States Navy ; French Appreci- ation of American Scientific Work ; Fish in Indiana Waters ; Khe- dival Geographical Society; Carnivorous Plants; Platinum-Black; Heat Conduction of Ice ; Leaves of Trees affect by their Height ; British Excise Duties on Liquors ; Popularity of Darwin's Books; Effects of Poisonous Plants upon Rodents and Marsupials ; Tele- graph Rates in England ; Exhalation of Carbolic Acid in Animals ; Primary Instruction in Peru ; Fishes under Great Pressure ; De la Bastie's Glass ; Mussels on the Hull of the Great Eastern; Income of the French Association ; Batrachian Remains in Palaeozoic Rocks ; Substitute for the Dredge ; Bleaching due to Oxygen ; Advantage of Hammocks in conveying the Sick ; Tea-Cultivation in Ceylon viii 126 Death of Sir Charles Wheatstone ; Gundlacb ; Death of S. D. Till- man; Ancient Mound near Detroit; Dr. G. B. Duchenne; De- crease of Medical Students in Germany ; Manufacture of Peat-Fuel in California ; Tufts College; First American Suspension-Bridge; Tin from Tasmania ; Anniversary of the Discovery of Infusoria ; Compressed-Air Tramway-Car; Cells in a Mushroom; British parj9 viii 255 Association Aids to Research ; Proposed Electric Exhibition in Delivery of Young Opossums ; Largest Telescope ; Birds with Teeth ; Hull-Gate Excavations; Wild Sheep; Changes in Tree-Growths in Denmark ; Nutrition and Habits of Plants; Spectrum Lines of Me- teors; Trial of the Eighty-one-Ton Gun; Statu Archaeological As- sociation in Ohio; Young Salmon placed in Truckee River; Nickel in New Caledonia; Death-Rate of English Towns; Spontaneous Combustion of Coal; Trichina) in a Wild Boar; Water-Spray for Steam in Sulphuric-Acid Manufactory ; Punishment for Assaults INDEX OF VOLUMES I TO XX. 77 .N otes : VOL. PAGE on "Women and Children ; Brightening Iron ; IIumble-Bees in New Zealand ; New Russian University ; Vanilla from the Wood of the Pine ; Female Medical Missionaries in India ; Bath Bricks ; Grain grown in Minnesota viii 383 Correction of Article on " Nebula in Sagittarius " ; Enormous Ox- Horns; The Tiger stronger than the Lion; Sagacity of Ants; Phosphuretted Hydrogen ; Rapid Plant-Growth ; Ferments ; Solid Matter in Milk ; Gas from Cork ; Country and City Boys ; Women in Medicine; Intelligence of Grasshoppers; African Journey of Marno; Electricity for Executions; Sulpho-Carbonate of Potas- sium for Phylloxera; Death of Dr. R. von Willemoes-Suhm ; Prize to Paul Bert ; Medal to Crookes ; Spiral Form of Nebula? ; Deter- mining the Longitude of the West Indies; Gum in Fruit- Trees; Electric Apparatus for detecting Adulteration ; Acetate of Lead in Sewing-Silk viii 510 Smithsonian Centennial Collection; Artesian Well in St. Louis; Mining of Ancient Cedar-Logs ; Recognition of the Work of J. Horrocks; The Great Auk ; Death of F. R. S.'sin 1875; Service of Confederate Cruisers in American Seal-Fishery ; Lieutenant Cam- eron's Journey ; Mr. Lick's Donation to the California Academy of Sciences ; Mastodon Remains at Lisle viii 640 Life-Pension to M. Pasteur ; Fish Resources of the United States ; American Microscopic Society ; London Loan Collection of Scien- tific Instruments ; Cat-Tail Substitute for Asparagus ; Sir John Franklin Search ; Death of G. P. Scrope ; Coast-Survey Signal on Mount Shasta; Proposed Union of the Black and Caspian Seas; Atfection of a Lioness for a Terrier; Indian Relics at Chickies, Pennsylvania viii 768 Birds breeding twice a Season; Coins of the Metric System; Fire- proof House: Nest of Fishes; Stimulant Drugs; Aged Physicians ; Women admitted to the Royal College of Surgeons, England ; Rail- roads in China; New Fossil Reptile ; Summer School of Biology; Salicylic Acid ; Illinois Normal School of Natural History ; West and East Rocks, New Haven ; Agricultural Station ; Channel Twin- Steamship ; Wonderful Recovery from Gunshot-Wound ; Strengths of Various Substances; New Variety of Bronze; Freezing Mer- cury; Wollaston Medal to Huxley; Summer School of Science; Discovery of Animal Remains in Switzerland ; Walnuts ix 126 Benjamin Franklin's Printing -Press; Eozoon Canadense; Bastian and Spontaneous Generation; Paper from Peat; Cotton-Worm; Making Pewter, etc., sonorous; Phylloxera Prize; Generation of Marsh- Gas in the Stomach; Cape Diamonds; Mortality of Liquor- Drinkers; Salicylic Acid in Sores; Explosiveness of Coal-Dust; Scalping; Nordenskjold Polar Expedition; Death of E. A. Parkes ; Death of Dr. II. Letheby ; Amber; Resonance of Sea-Shells ix 255 Gift to the Royal Society ; First Employment of Chlorine ; Age of the Third Pyramid; Vitality of Jews; An Eel's Tenacity of Life; Death of A. R. Marvine ; Vaccination in India ; Scientific Results of the Polaris Expedition ; Ant-Eggs; Dogs and Arsenic; Cinchona- Trees in Reunion Island ; Smithsonian Institution Fund ; Foot and Mouth Disease and Milk; Fish-Bones for fertilizing; Peat-Fuel; 6 78 THE POPULAR SCIENCE MONTHLY. Notes : vol. page Fire-Damp Explosions and Atmospheric Pressure; Drinker's "Amer- ican Tunnels"; Age of Elephants; Seal-Meat; Uniformity of Meas- ures, Instruments, and Methods of Observation among Physicians, ix 383 Franklin Institute's Exhibit at the Centennial ; International Horticul- tural Exhibition; European Silk-Crop, 1874; Course in Spencer's Psychology at Harvard ; Small-pox conveyed by Letter ; The Py- thon as a Patter ; Silk-Worms reared on Osage Orange ; Published Eesults of the Challenger Expedition; New Grape-Fungus; Car- Wheels traveling 91,800 Miles; Return of the Challenger Expedi- tion; Death-Rate in England; Pig-Iron Street Pavement; New Gas Process ; Hoosac Tunnel ; Tea-making ; Depth of the Pacific, ix 511 Buffalo Meeting (1876) of the American Association; Meeting (1876) of the Entomological Club; French Association (1876) Meeting; Agassiz Museum ; British Association Meeting (1876) ; Brilliant Meteor; Death of E. Newman; Study at Home Society; Knighting of Professor C. Wyville Thomson ; Grass penetrating a Telegraph- Cable; Relations of Ophthalmology to General Surgery; New Green Pigment ; Microscope in examining Water ; Heating Gas in London ; Vaccination in Foot and Mouth Disease ; An International Coinage ; Photographing Solar Eclipses ; Legislation on Vivisec- tion ; Practices in English Insane Asylums ; Proposed French Ex- pedition, 1878 ; Testing Safety-Lamps ix 639 Work of the United States Fish Commission ; Remarkable Coal- Mine; Parasite on the Potato-Bug ; Memorial to Dr. Parkes; Car- rier-Pigeons m Germany ; New Book by Darwin ; Effect of Sub- cutaneous Injection of Sodic Lactate ; Liability of the Eye to Injury ; Permanence of Prussian Blue ; Gallium ; Amputation of the Tongue ; Hardened Glass Lamp-Chimneys; Nickel-Mine in Pennsylvania; Carbon in the Heavenly Bodies ; M. Paul Bert's Prize ; New Fireman's Suit ; Cholera among the Cats ix 767 Depth of the Ocean ; S. W. Burnham appointed Director of Dear- born Observatory ; Measurements of Skulls of Noted Men ; Vana- dium; Dynamite in Vine-Culture; Death of C. G. Ehrenberg; Sugar from Watermelons ; Death of Dr. Lonsdale ; New Geological Map of Scotland; Cremation Congress; Fermentation in Atmos- phere of Carbonic Acid and Hydrogen ; Liquid Mercury found at Montpellier; Phosphor-Bronze Wire Rope ; Hatching Silkworms by Electricity; Early Workers in the Mechanical Theory of Heat; Ar- tesian Wells in Algeria ; Living Gorilla brought to Europe ; Medical Prize; Cochin-China Diarrhoea ; Death of George Smith; A Case of Longevity s 127 American Metric Bureau; Free Analyses at the Paris School of Mines; Cremation in Saxe-Gotha; Tree-Planting in Illinois; The Govern- ment and the Rocky Mountain Locusts ; Voices of Animals ; Woman in the University of Micbigan; Antidote for Toadstool-Poison; Spontaneous Combustion of Coal; Size of Brain in Dogs; Bottom of the British Channel seen from a Balloon ; Death of Professor Dimond ; French Association's Aid to Research ; Coal and Iron in Central Africa; Martin's Lecture at Johns Hopkins; Nickel-Ore in Pennsylvania; Steam Velocipede ; Finds at St. Nazaire ; Births and Deaths in Great Britain ; Blue Glasses x 255 INDEX OF VOLUMES I TO XX. 7g Notes : vol. page Laboratory for Female Students, in the Massachusetts Institute of Technology; Adulterated Coffee ; Zinc-White ; Deposit of Plumba- go ; Life and Works of Darwin ; Death of 0. Sainte-Olaire Deville ; Eules of Publication at Johns Hopkins ; Cost of Gas ; Paris School of Anthropology; Bequest of Brains to Paris School of Anthro- pology; Lubricating Oils; City of Health; Opening of the Ger- man Maritime Canal; Changes in Choice English Cattle; Ravages of Wolves in Russia ; Zoological Station in Russia ; Suicide by Dynamite ; Prussian Anthropological Commission ; Protection from the Phylloxera ; Decline of Pauperism in England x 383 Swindling Bank-Scheme in Madrid ; Recent Addition to the Buffalo Museum; Boston Society for Promoting the Higher Education of Women ; New Insect in Carpets, Furs, etc. ; Enlargement of Ham- ilton College Observatory ; Death of Carl Jelinck ; New Element ; Monument to Liebig; Williams College Exploring Expedition; Statue of Faraday; Scurvy in British Polar Expedition x 512 Trout for New York Waters ; Radical Review ; Merino Sheep in Wis- consin ; Turkish Yiew of Railroads ; International Agricultural Con- gress at Paris, 1878; Award of Medals of Royal Society in 1876; Results of British Arctic Expedition ; Silver-Mine in Newfoundland ; Land-Grants in Canada ; Depot for Sale and Exchange of Natural History Specimens ; Text-Books in Colleges; Crow ridding Him- self of Vermin ; Death of H. E. Copeland ; Agricultural Stations in California ; Epizootic in Egypt ; Bituminous Sediment in the Schuylkill; Radiometer; New Educational Journal ; The American Kinglets ; Fire Losses on the 4th of July ; Precautions in White- Lead Works ; Religious Fermentation in Russia x 639 Audubon's Flower ; Sensibility to Sounds in Men and Women ; Death of A. Smee ; Death of K. E. von Baer ; Death of W. F. B. Hof- meister ; Death of D. Forbes ; Blanca Peak ; Vitality of Snails ; Plural Childbirth s in Prussia; Atamasco Lily; Aniline Colors in Art- Work ; Sun-Spots and Hail -fall; Fossil Footprints; Coffee- Leaves; Phylloxera in France; Cooks' Insanity; Remedy for the Phylloxera ; California Zoological Society ; Eucalyptus an Antidote for Malaria; Lead in Roquefort Cheese; Substitute for Water in sprinkling Streets ; Long-continued Fire in a Belgian Coal-Mine. . . x 767 Circular of the Massachusetts Institute of Technology ; School Hygi- ene ; Abandoned Ships in Arctic Regions ; Boylston Prize Essay ; Propagation of Light in a Vacuum ; Statue of Livingstone ; Coal in Utah ; Coral on a Cable ; Birds ; Encalyptus in the United States ; Effect of Whiskey at High Elevations ; Death-Rate of Infants in Calcutta; Nitro-Glycerine in Epilepsy; Destruction of an Oyster- Bed ; Telephone in Mines ; Submarine Ridge off Portugal ; Electric Light in English Lighthouses ; New Iron- Alloy ; Islands of New Britain and New Ireland ; Death of Dr. E. Mohr and Dr. H. von Barth-Harmanting ; United States Entomological Commissioners; Remarkable Appearance on Saturn xi 127 Dr. Elliott Coues's Inaugural Address; Bowdoin Summer School of Science ; Death of J. S. Bowerbank ; Heat imparted to the Air by London ; Death of J. C. Poggendorf ; Preacher's Attack on Evolu- tion ; Ross Winans ; Industrial and Inventive Drawing in the Pub- 8o THE POPULAR SCIENCE MONTHLY. Notes : vol. page lie Schools ; State Board of Examiners for College Degrees ; Sugar from Corn; Mortality on the West Coast of Africa; Provisions of the British Polar Expedition ; Suicide Statistics ; Black Bass in the Susquehanna ; Increased Fund for Meteorology in England ; De- crease of Fish in New Jersey Waters ; Technical Education; Animal Remains in Northern Spain ; Prevention of Moisture on Mirrors. . xi 255 Ways of spending the Summer ; Women admitted to Clinics; Sum- mer Course at Cincinnati Observatory; Rock-Crystal for Standards of Weight and Measure; Cleansing Skeletons of Small Animals; Lectures on American Prehistoric Archaeology ; Tungstate of Soda for rendering Cloth uninflammable; Cremation in London; Lect- ures on Stock-Breeding ; Death of P. P. Carpenter ; Professor Morse visits Japan; Meaning of "Anthropology," "Ethnology," and " Ethnography " ; Economy in Iron Manufacture ; Effect of Glyc- erine xi 383 Errors to which Microscopists are liable ; Imperviousness of Glass; Unveiling of the Monument to Liebig ; Death of Alexander Braun ; Absorptive Power of Sea-Weed Charcoal ; Progeny of a Cock and a Duck ; Carnivorous Habits in Red-headed Woodpeckers ; Trans- actions of the American Society of Civil Engineers; Late Spring in Scotland ; Size of the Red Corpuscles of the Blood ; Siemens's Hardened Glass; Statistics of the Blind; Commerce in Africa; Bichromate of Potash as an Antiseptic; Device for drawing Liquids from Carboys; "Oriental Sore"; Bressa's Bequest; Moles as Destroyers of Worms si 511 Destructive Tornado in Indiana ; Effect of Steam on a Saline Solu- tion ; Action of Sea- Water on Copper and Phosphor-Bronze ; Ex- periment showing Increase of Weight by Combustion; Toads eating Bees; Water and Turpentine exposed to a Current of Air; Absence of Domestic Animals among Negroes; Revision of the American Pharmacopoeia; Heating a City by Steam ; Remains of an Enormous Dinosaur ; Cause of Typhoid Fever ; Tea Statistics in England ; Comparative Safety of Crystallized and Liquid Nitro- Glycerine X1 637 Steam-Power in the World; Wheat sprouting after being Four Years in Arctic Regions; Papier-Mache Coating for Iron Ship Bottoms; Ilowgate Expedition; First Telephonic Line for Actual Use ; Transactions of the American Society of Civil Engineers ; Fires caused by Concentration of the Sun's Rays; Consumptives in Australia; Growth of a Tree; African Exploration; Native Trees, etc., of Southern France xi 7G8 Zinc in the Liver; Lucid Teaching; Barrenness of Land flooded by the Sea; Longevity of Orange-Trees; Anthracite in Arizona; Persistency of House-Wren in Nest-building; Fish-eating and Brain-Power; Hibernation of Birds; Singular Instance of Hered- ity; Germs on a Hospital Wall; Archroopteryx, Discovery of the; New Ice-Breaker; Poisoning by Colored Stockings; Cremation Death Notice ; New Malady of the Grape-vine ; Lavoisier Medal to Walter Weldon ; Dunkirk Microscopical Society ; Berlin Aquarium Gorilla ; Death of Professor Parlatore ; Dynamite in the Slaughter- House sii 12f INDEX OF VOLUMES I TO XX. 81 Notes : TOL. PAGB Iron Piano-forte Frames ; Telephonic Inventions ; Utilization of Natural Gas ; Appointment of Professor J. E. Hilgard Director of International Bureau of Weights and Measures; Death of J. Nog- gerath ; Death of H. Newton ; Proctor's Occupations ; a Foe of the Phylloxera ; French Scientific Expedition ; The Lick Tele- scope ; Discoverer of the Laryngoscope ; Disappearance of the "Barker Islands"; Human Hair from China; Cheese in Army Rations xii 255 Upward Filtration ; Scientific Aspersions of Military Men ; Death of James Orton ; Relic of the Sir John Franklin Expedition ; Technical Education ; Death of W. H. Fox Talbot ; Measurements of Head in Men and Women; Live-Stock Insurance Company ; Scales to show Loss of Weight of the Body ; Preserving Fish ; Monument to Lin- naaus ; Vineyard in Wales xii 383 Solar Eclipses in 1878 ; Award of " Copley Medal " for 1877; Prize for Means of extracting Juice from Sugar-Cane; Forest-Growth in Australia ; Death of K. L. von Littrow ; Mean Distance of the Sun ; Burial Customs of North American Indians ; Death of D. A. Spaulding; New Filter; Prize for Machine for preparing Ramie- Fiber ; Bicarbonate of Sodium for Burns ; Lightning-Rods in An- tiquity ; Engines of British Ironclad Terr.eraire ; Test for Sewage in Water; Embryo of the Crawfish; Beecher's Sermon on the Future Life xii 511 Fossil Ferns in Silurian Rocks ; Election of Professor Whitney to the French Academy of Inscriptions and Belles -Lettres; Fines imposed on a Gas Company ; Arrest for Unsanitary Condition of a House ; Death of H. D. Ruhmkorff ; Singular Rite of the Semi- noles ; Rainfall and Sun-Spots ; Value of Crying in Pain ; Case of Lead-Poisoning xii 6-10 Causes of Diseases of Women ; A Great Chinese Literary Work ; De- struction of Life in India by Wild Animals ; Professorships of Hy- giene in the Holland Universities ; Parkes Museum of Hygiene ; Coal-Measurea of Missouri; Effect of Contact with Millepora; Strong Drink among the Swedes ; Summer School of Zoology of Union College; Vivisection; Saliva of the Rat; School-Seats; Cremation on the Battle-Field ; American Museum of Natural His- tory; Galvanized Iron for Roofing; Cocoon-Silk Industry in France; Bookbindings and Coal-Gas ; Germ Theory of Disease ; New Tanning Process xii 767 Date-Palm in the United States ; Largest Bell in the World ; Gas from Oil-Waste; California Wines ; Buffalo Society of Natural Sciences; Explosion of Toughened Glass ; Engraving by Electricity ; Sheep- Entrails for Belting ; Foucault's Pendulum Experiment to be re- peated at the Paris Exposition, 1878 ; Lockjaw ; Dangers of Infec- tion by Books; South-Polar Spot ; Objections to Trees in Towns; Fasting Girls ; Camels in Texas ; Effect of Vibrations on Hard and Soft Steel; Trials of Endurance ; Value of the Common Nettle as a Textile Fiber xiii 127 Bowdoin College Summer School of Science ; " Writer's Cramp " ; Disappearance of an Island ; Unequal Length of the Lower Limbs; Fossils from Oregon ; the Catalpa as a Timber-Tree ; Death of Ju- 82 THE POPULAR SCIENCE MONTHLY. is otes : y0Ii- page lius Robert Mayer ; the Colorado Potato-Beetle in New Zealand ; Growing Mushrooms in a Ooal-Pit ; De Lesseps Panama Canal ; Theodor Schwann ; Pneumatic Clocks in Paris; Effect of Different Gases on Eggs of Silk-Worm ; Ventilating a Eoom without Draft; Waste Pyrites on Roads ; Temperature of the Head xiii 255 Meeting of the American Association, 1878 ; British Association Meet- ing, 1878; Summer Study at Cincinnati Observatory; French As- sociation Meeting, 1878 ; Death of Dr. C. Pickering ; Forms of Address; Hell-Fire Controversy; Botanical Specimens for Berlin Public Schools ; Johns Hopkins Summer School of Zoology ; Anom- alies in our System of Weights and Measures; Effect of breathing Carbonic Acid ; Japanese Copper ; Whitebait in New York Bay ; French Support of their Museums; Liquor Statistics in Great Britain xiii 383 Sailing of the Schwatka Expedition ; Rediscovery of the Fungus Sphoeria; the Chinch-Bug; " Calaveras Skull"; New Fibrous Plant for Paper-making ; Indo-Germanic Grammars; Appointment of Dr. Brown-Sequard to the Chair of Physiology, College of France ; Temperature at which Bacteria are killed ; Death of Professor Wolfers and Rev. R. Main ; South American Earthquake, 1877 ; Ensilage ; Statue to Bruno xiii 511 Industrial Drawing at Cornell ; Remains of a Mastodon in Indiana ; Meeting of German Association of Naturalists and Physicians, 1878; Death of W. M. Gabb; Death of C. Rokitansky ; Death of Sir George Back ; Insects injurious to the Cotton-Plant ; Influ- ence of Light on Cement xiii 640 Fish and Fowl poisoned by Paris-Green ; Jupiter; New Crater on the Moon's Surface ; Education of Girls; Cremation Society in Indi- ana; Social Customs of Japan; Geology and Theology; Recur- rence of Maxima of Sun-Spots; Wild Camels in Russia; Industrial Uses of Sawdust ; Male and Female Infants in Montenegro ; Nail- ers' Consumption; Bell Telephone in England; Man with Six Fingers xiii 767 Meeting of the American Association, 1879; Death of E. Quetelet; New Fossil ; Machine for indicating Areas ; Death of Gustav Wallis ; Characteristics of Good Petroleum ; Election of Darwin to the Paris Academy of Sciences; Work of American Microscopical Congress; Possibilities of the Microphone; Sugar in Beet-Roots ; Seizure of Murray's Book on France ; Heat-Value of Fuel ; Importation of Ivory into England; Hop-Stems for Textile Use; Horseshoeing; New Volcano xiv 127 Sixth Meeting of American Public Health Association ; Railroad across Newfoundland ; Voyage to the South Pacific ; Recovery of the Lost Art of tempering Copper; Agricultural Schools in India; Domestication of Native Java Honey-Bee ; Death of Sir R. J. Grif- fith ; Educational Statistics in the United States ; Professor Fis- cher's Death; Electric Light at Sea; Causes of Color-Blindness; The War of the Mineral Waters; Examination of Mineral Resources of Northern China; Publication of Bruno's Works xiv 255 Medal to E. R. Andrews ; Death of Thomas Belt ; Elements of Com- pound Bodies; Copper in Pennsylvania; Pulling a Monkey's IXDEX OF VOLUMES I TO XX. 83 Notes : vol.. page Tooth ; Difference of Live and Dead Flesh ; Proposed Changes in Survey Work of the United States; California Salmon in Maryland Waters; English Milk Law; Superstition regarding Ascent of Mount Ararat; Lime-Juice; Proposed Astronomico-Meteorological Observatory on Mount Etna ; Composition of Eoot of the Straw- berry Plant ; Iridescent Glass xiv 407 Death of Gr. H. Lewes ; Advertisements on the Eocks ; New Illu- minating Gas ; Protection of Teaching as a Profession ; Gas-Wells of East Liverpool, Ohio ; Profits of Wheat-growing ; Eoyal As- tronomers of Siam ; Prayers for Eain xiv 552 Work of United States Fish Commission ; Aniline Dyes in Artificial Flowers; " Black Mildew " ; Cretinism ; Anthropological Exhibition at Paris Exposition ; Gas and Book-Covers ; Boring Power of the Sponge " Cliona Sulphurea"; New Explosive; Test of Purity of Water ; Marquis of Tweeddale ; Locust-Trees in New Jersey ; Death of J. McNab; Cross between the Elk and the Moose xiv 695 Medal to Professor A. Hall ; Death of Geissler ; French Canadians ; Animals and the Sense of Eidicule ; Swiss Military Examination ; Cremation ; Temperature and Mortality in London ; Missionaries from Japan to Europe and the United States ; Smallest of Known Insects ; Cowper's Writing Telegraph ; Sydney World's Fair ... xiv 840 Dew; Mode of Propagation of the Eel; Loss of Sense of Smell; Blood of Cephalopoda; American Cartridges; Population of To- kio ; Tobacco as a Poultice ; Yearly Consumption of Quinine ; Cremation in England and the United States; Eighteenth Cente- nary of Destruction of Pompeii and Herculaneum ; Honey Mes- quite ; Remains of an Old Roman Bridge xv 143 " Cave Find " in Ohio ; Mortality of Whites and Blacks in Yellow Fever ; Extreme Variations of Temperature ; Decrease of Theologi- cal Students in Germany; Underground Telegraph Cables; Air in Buildings; Death of P. Le Neve Foster; Bigsby Medal to E. D. Cope ; A Coffee- Plant Parasite ; Larva of Tapeworm ; New Life- Line Projectile xv 288 Forty-ninth Meeting of the British Association ; Meeting of the Amer- ican Association (1879); Meeting of French Association (1879); Johns Hopkins Summer Zoological Laboratory; Pipes found in a Mound ; Death of H. W. Dove ; Election of J. L. Smith Corre- sponding Member of the French Academy; Metric System in Pub- lic Schools; Charnay's Explorations; Cleanliness in Schools in Holland ; Experiment in teaching Physical Geography ; Electri- cal Resistance of Water ; Election of A. Hall Corresponding Mem- ber of the French Academy ; Works by Clifford ; Borax for pre- serving Butter ; Algeria through the Sahara xv 431 Trichinaa in American Meat ; Election of nuxley Corresponding Mem- ber of the Paris Academy ; Digging Post-Holes by Explosives ; Macmillan & Co.'s Catalogue ; Bamboo for Paper-making ; W. M. Williams on the Cost of the Electric Light ; Work of Bees in col- lecting Honey ; Two Christian Names ; Election of Professor Stokes Corresponding Member of the Paris Academy ; Old Astro- nomical Record xv 576 Death of Sir William F. Cooke ; Death of Rev. Canon Beadon ; 84 THE POPULAR SCIENCE MONTHLY. Notes : vol. page Chemical Laboratory for Examination of Foods ; Cancer and the Climate ; Electric Light and Color Sensations ; Survival in Eng- land of the Official Ale-Taster ; Cobra-Plant ; New Explosive ; 100-Ton Gun; Russian Mortality Statistics; Case of Albinism; New Artificial Stone ; New Zealand Hot Springs xv 719 Meeting of the American Association (1880) ; the French Associa- tion; Paris-Green more damaging than the Potato-Bug; Scud- der's Catalogue of Scientific Works ; Distribution of Races in In- dian and Pacific Oceans; Curari for Hydrophobia; Tent Hospitals in Scarlatina Epidemics ; Preventive Medicine ; Death of Sir Thomas Maclear ; Death of Keith Johnston ; Color-Blindness among Negroes ; Cape Diamonds ; Glass broken by Hail-Storm . . xv 863 Osage Orange for Silk- Worm ; Carrier-Pigeons in Meteorological Ser- vice ; Transmission of Power by Electricity ; Death of Bernhard von Cotta ; Scandium ; New Map of Solar Spectrum ; Prize for Essay on Diphtheria; Subterranean Waters in a Bohemia Mine; Street Sweepings in Australia ; Barnard favoring Co-education ; Savagery of English Officers; Petroleum Residuum on the Caspian; Medicinal Qualities of Mihania gxiaco ; Test for Sewage in Water xvi 143 Entomological Club ; Mean Depth of the Sea ; Circulation of Scien- tific Works in Russia; Extraordinary Case of Loss of Hair; Car- bon Compounds ; Average of Rainfall in England ; Chloral ; " Cave Finds" in Moravia; Subduing Vicious Horses by Electricity; Snow-fall in Cashmere ; Uninflammable Textile Fabrics; Meeting of the French Association, 1880 xvi 287 Death of H. Negretti; Shad in Lake Ontario; Portland (Maine) Natural History Society ; Lick Observatory Fund ; Death of Dr. E. Fenzl ; Language in Lower Animals ; Nordenskjold's Projected Second Expedition ; Russian Translation of the " Data of Eth- ics " ; Injuries to Pedestrians in the London Streets ; Unhealthy Conditions and Epidemics xvi 432 Ancient City Site near Bonn ; Death of J. Clerk Maxwell ; Injury to the Eyes by Chloral ; Death of K. F. Mohr ; Brussels International Geographical Congress ; Death of W. W. Saunders ; Remains of the Manatee ; Death of Lady Lubbock ; Royal Society Awards ; Great Railroad Heights xvi 576 Birthday Anniversary of Carl Ritter; Death of F. Boll ; Saliva and Gastric Juice; Leibnitz's Calculating Machine; Starvation of Esquimaux; Creosote in preserving Timber; Hungarian Mineral Waters ; Death of John Mears xvi 720 Death of J. W. Milner; Yellow Fever in Horses and Dogs; Volta Prize to A. G. Bell ; Prize to W. Crookes by the French Academy ; Entomological Prize ; Action of the Heart ; Fish killed by Light- ning; Engine-driving; Death of David Thomson; Death of M. Walferdan xvi 864 Premiums to Subscribers to " Popular Science Monthly"; Cheap Household Light; Effect of Absence of Sunlight on the Sea-Bot- tom; Adulteration of Smoking-Tobacco; Death of C. R. Charry; First Volume of Work of Johns Hopkins Biological Laboratory ; Death of W. T. Roepper ; Locomotion of Insects xvii 143 Importation of Opium into China; Pine-Trees and Moisture; Death INDEX OF VOLUMES I TO XX. 85 N°teS •' VOL. PAGE of E. A. Ilelmuth von Kiessenwetter and S. C. Snellen Van Valen- hoven; A Gramme-Machine; Death of W. Artus; Spontaneous Ignition of Silks ; Temperature of the Sun ; Death of General W. Munro ; French Protection of Birds ; Decrease of Adulteration in England ; Death of Dr. Boisdoval xvii 288 Dreams ; Forest Observations in France ; Death of Dr. L. Moser ; Scarlet Fever distributed by the Milk-Supply ; New Balloon ; Death of J. C. Ward; Hailstones Ten Inches in Circumference ; Death of Karl von Seebach ; Scientific Association in Algeria; Boyd Daw- kins's American Lectures; Large Lump of Solidified Mercury; One- Toed Hogs and Deer; Death of Thomas Ball; Unsanitary Con- dition of the Riviera ; Death of A. J. Morin ; Sieinens's Experi- ments with Electric Light on Vegetation; Death of Dr. William Sharpey xvii 431 Death of W. K. Kedzie ; Soundings of Niagara River ; Death of G. J. Mulder ; Death of N. Zinin ; Johns Hopkins Summer School of Zoology ; Second Specimen of the Archaeopteryx ; M. Chevreul ; Gelose; Death of D. T. Ansted; Fertility of Hybrids; Death of W. Schimper ; Death of R. H. C. C. Scheffer xvii 576 Correction ; Transmission of Tubercle ; Nickel in Norway ; Fiftieth Annual Meeting of the British Association; Meeting of the Swiss Natural History Society ; Death of A. S. Taylor ; Meeting of the French Association, 1880 ; Introduction of Foreign Insects and Plants ; Death of C. A. F. Peters ; Death of W. H. Miller ; Varia- tions of Color in Canary Birds; Schliemann Collection of An- tiquities; Albert Medal to Dr. J. P. Joule; Death of Dr. P. Broca; Death of G. J. Mulder; Monthyon Prize to C. Flammarion; Whymper's Discoveries ; Absence of Survey during Nordensk- jold's Expedition ; Wheat discovered by Schliemann ; Efficiency of the Electric Light ; Sulphide of Carbon as a Cure for Phyl- loxera xvii 719 Spanish Mackerel in the Chesapeake; Death of E. B. Andrews; Effect of mixing White with other Colors; Society of American Taxidermists ; Death of A. J. Meyer ; Solid Sulphuret of Carbon ; Death of C. W. Borchardt ; Explanation of Erection of Primitive Stone Monument; Telephone Reports; Sensitiveness of the Eye ; Death of M. Lissajons; Appreciation of Sanitary Conditions in Boston ; Color Decoration of Common Gray Stone-ware ; Death of Count Pourtales ; Monkeys in the West Indies xvii 863 Glacier in White Mountains; Fixedness of Characters of Plants; Death of Benjamin Peirce ; Germs in Disease ; Ansemia ; Contents of an Ostrich's Stomach ; Perforation of Rocks by Sand ; Death of C. T. Jackson ; Decrease of Primitive Inhabitants of New Zealand ; Tay Bridge Disaster; Insects and Strong Chemicals; Death of S. S. Haldeman ; Burial-Mounds in India ; Flickering of Gas-Lights ; Cythera; Artificial Production of Spinelle ; Land-Snails in Yezo, xviii 143 Water-Traps and Sewer-Gas; Financial Advantages of Sanitary Ad- ministration of Towns ; Seats for Saleswomen ; Ytterbium ; New Remedy for Neuralgia; Lake of Tiberias; Coloring-Matter of Flowers; Hydraulic Cement from Slag of Blast-Furnaces; Forma- tion of Fat; Training Monkeys ; Gout induced by Lead-Poisoning; 86 THE POPULAR SCIENCE MONTHLY. ^otes : T0L. PAGE Coating Thread with Silk; Pasteur's Eesearches on Contagious Diseases xviii 207 Large Holtz Frictional Machine ; Fishes on the Pacific Coast; Ants; Microscopic Vegetable and Animal Life in Ponds; Irrigation with Sewage; Phosphorescent Meat; Stars of the Southern Heavens ; Copley Medal to J. J. Sylvester ; African Telegraph ; Photograph of the Nebula in Orion ; Improvement in Solar Engines ; Electric Lights in St. Gothard Tunnel ; Kock-drill driven by Electricity ; Death of Dr. H. von Wagner xviii 431 Meeting of the French Association (1881); Death of M. Chasles; A Correction ; Death of Dr. J. Stenhouse ; Antennas of Insects ; Death of Ernst Ilampe; Growth of American Associations; Inter- national Congress of Electricians; Blood-Capillaries; Death of J. C. Watson; Equipment of the Observatory at Nice; Death of A. Wood; New Process of Tanning; Death of Benjamin C. Brodie; Death of P. A. Horner xviii 575 Fleuss's Diving Apparatus; Suffocation of Infants by Overlying ; Death of F. T. Buckland ; Death of T. E. Jones; Improved Solar Engine ; Entomological Club in New York ; Evolution and Zoolo- gists ; Effect of Different Colors on Development of Infusoria? ; Proposed Systematic Solar Photography; Siemens's Electric Rail- way; Boston Free Library; Phylloxera in the Crimea; Mont Cenis Tunnel; Colossal Fossil Rhinoceros; Election of A. B. Gould to the French Academy ; Death of J. T. Towson ; Huxley appointed Inspector of Fisheries xviii 719 Instruction in Plumbing and Sanitary Engineering ; Second Annual Meeting of the Illinois Natural History Society; Cremation in New York ; Death of Dr. E. Boricky ; Geology of Iron County, Utah ; Death of C. F. Kuhlmann; New Intermittent Signal -Lamp; Vitality of Disease-Germs; Death of William White; Society of Arts Prizes; II eilprin's Course of Lectures on Invertebrate Pale- ontology ; Value of Whales in aiding Fisheries ; Sach's Experi- ments on the Electric Eel ; Death of Professor A. Brongniart ; Death of J. J. Bigsby xviii S63 Thermometric Bureau ; Buckland's Museum of Economic Fish Cult- ure ; Electric Light for catching Insects ; Arteriography ; Moist- ure-collecting Plant; Death of Carl Weyprecht ; Artificial Basalt; Woolen Mattresses and Disease ; Death of Sabino Berthelot ; The Spongidfe ; Election of J. W. Draper Honorary Member of Phys- ical Society, London; A Correction; Death of Dr. J. Lewis; Rat caught by an Oyster; Ice-Drift in New York Harbor; Suhstances from Peat ; Mode of applying Sulphuret of Carbon for the Phyl- loxera ; Sun-Spots and Rainfall ; Altitude and Color of Flowers, xix 143 Meeting of the National Academy of Science; Seaside Laboratory of Natural History; Death of A. Delesse ; Malthusian Doctrine and Fish; Death of an Aged Carp; Sixth Session of the Summer School of Biology; Recent Improvements in Marine Navigation ; Durability of Building-Stones under Heat ; Meeting of the So- ciety of Agricultural Science ; Meeting of the French Association ; Death of J. Tennant; Death of F. A. Nobert; Formation of New York Electrical Society ; Death of Sir P. Egerton xix 283 INDEX OF VOLUMES I TO XX. 87 N°teS : VOL. PAGE Ked Color on Dried Codfish ; Death of Georgo B. Emerson ; Trawl- ing; Fifty-first Meeting of the British Association (1881) ; Third Meeting of the International Geographical Congress ; Microphonic Concerts; Birds of Passage; Des Moines Field Club ; New Fossil Bemains ; Tricycle driven by an Electro-Motor ; Appalachian Mountain Club ; Deep Coal-Mine in England ; Fossil Kemains of Men near Nice ; Absorption of Ueat by Walls ; Central Meteorolog- ical Bureau of France xix 431 Mound near Trenton, Missouri ; Death of G. Krefft ; Meeting of International Geological Congress ; Spectroscopic Observations ; Wind-Pressure ; Magnetic Survey of Missouri ; Expansion of Metals in passing from the Liquid to the Solid State; Ignition by Nitric Acid; Temperature of the Human Body; Edinburgh Sunday Sci- ence School ; Pictet's Ice-Machines ; Johns Hopkins Biological Laboratory; Death of R. C. Gunn; Mercadier's Photophonic Re- searches ; Death of John Blackwall ; Toad-Market in Paris ; Inter- national Medical and Sanitary Exhibition ; Meeting of French As- sociation for the Advancement of Science xix 575 Rood's Improvement of the Sprengel Pump ; A Correction ; Center of Population in the United States ; Death of J. F. McLennan ; Susceptibility of Spiders to Music; Deterioration of the English People ; Rumford Medal to J. W. Gibbs; Death of Sir Josiah Ma- son ; Prize to M. de Bisschop ; French Museum of Ethnography ; Increase of Danger from Lightning; Death of George Rolleston ; Carbonic Acid and Red-hot Stoves ; Tube-constructing Spider ; Atomic Weight of Aluminum xix 719 Microscopical Study of Iron-Ore; Humble-Bees in New Zealand; Reduction of Working-Hours of Railroad Employees; French Mag- netic Station at Cape Horn; Uniformity in Mathematical Notation; Fifty-fourth Meeting of the German Association of Naturalists and Physicians ; Death of M. J. Schleiden ; Vaccination as a Protection against Carbonaceous Diseases; Explosiveness of Coal-Dust. . . . xix 864 Plant-Diseases and Bacteria ; Power of Imitation in Birds ; Corrup- tion of Names ; Ground-ice ; Spread of the English Language ; Smithson ; Salicylic Acid ; Effect of Inhalation of Oxygen ; Syn- thesis of Ammonia ; Fascination of Birds by Snakes ; Bessemer Process applied to Copper ; French Commission on the Hygiene of Eyes in Schools ; New Treatment of Diphtheria ; Effect of Intel- lectual Work upon Cerebral Circulation xx 143 Improved Index ; Death of J. M. Hildebrandt ; Election of M. de Lesseps President of the French Geographical Society ; Death of John Duncan ; Death of H. C. Watson ; Influence of Music on the Circulation ; Death of F. Kellar ; Death of M. Dubrunfaut xx 288 Increase of Entomologists ; Appointment of M. Wurtz Life-Senator; Stone Implements; School Discipline; "Manuscript Troano " ; Pollination of Yucca ; Density of the Liquefied Gases ; Effect of Tincture of Ergot of Rye ; Musical Sand ; Electrical Paper ; En- demic Goitre; The Canidse ; Measurement of the Velocity of Light; New Construction of Vessels to increase the Speed; Elec- trical Resistance of Carbon ; The African Interior Sea Project; Photographs of Nebula? ; Coloring-Matter of the Medusas; Metro- 88 THE POPULAR SCIENCE MONTHLY. Notes : vol. page politan Museum of Art's Technical School ; Decrease of Pine in Michigan ; Power of Ventriloquism in Birds ; W. H. M. Christie appointed Royal Astronomer xx 430 Proper Mode of studying Science ; Prizes for Essays on Means of as- sisting the Sick and Wounded of Armies ; Age of Copper-beai-ing Traps, Lake Superior ; Atomic Weight of Platinum ; Peabody Mu- seum of American Archaeology; New Evidence of Roundness of the Earth ; Keweenaw Point, Lake Superior ; Electrical Resist- ance of Iron and Steel Wire ; Philadelphia Academy of Natural Sciences ; Death of F. Curry ; Crime and Education ; Communica- tion of Hydrophobia ; Statistics of Sickness in the Army ; Disinfec- tion by Sulphurous Acid ; Catalogue of tbe Phenogamous and Vas- cular Cryptogamous Plants of Indiana ; Prehistoric Canoe xx 574 The Rodentia ; Visitors to tbe Natives on the Western Coast of North America before 1720 ; New Imported Insect ; Vaccination among the Cbinese ; Character of Iron-Ores of Marquette District, Lake Superior ; Calomel in the Human System ; Geological Formations of Schuylkill County, Pennsylvania; Death of A. Gauthier; Pun- ishment for Negligence in Use of Boiler ; Agricultural Statistics in the United States; Graduation of Thermometers; Locust Plague in the West; Death of Ami Bou6; Nickajack Cave; Medal to W. K. Brooks; New Saurian; Production of Inductive Currents by Distant Lightning xx 719 School-Tax in Charleston, South Carolina; Largest Trees known; Death of Theodor Schwann ; Distribution of Birds in Nevada ; Educational Legislation in England ; Requirements for Admission to Medical Schools ; Tests for Sight; Death of Dr. C. G. A. Giebel ; Death of J. Bouillaud ; Remarkable Change in Color of the Hair; Death of M. Bussey ; Meaning of the Geologic Term " Laurentian " ; Remains of Large Mosasauroid Reptile ; Death of II. von Schlagint- weit; Coloring-Matter of Crayon-Pencils; Death of Karl Peters and Karl Fortlaa:e ; Report on Museums of Technology, Science, etc. ; Death of P. Manteucci ; First Discovery of Fossil Human Re- mains in Brazil; Harmlessness of the Electric Light to the Eyes, xx 862 Novelty, Lack of, in Most Things (Misc.) ii 380 Nubian Race, Types of xvii 512 Nuisances, Problem of Municipal. R. S. Tracy xviii 585 Numerals, Origin of the (Misc.) viii 380 Origin and Curiosities of tbe Arabic x 736 Nursey, P. F. Glass, Tempered vii 554 Nurture, Relative Powers of Nature and, as illustrated by Twins. Francis Galton viii 345 o Oak-Treee, Legend of the Devil and the (Misc.) xiii 507 Oaths, Ordeals and. E. B. Tylor ix 307 Obesity, Reduction of (Misc.) viii 255 Observation in Education (Ed. Tab.) ii 371 Observatories, Astronomical and Physical ii 365 The English vi 530 INDEX OF VOLUMES I TO XX. 89 VOL. PAGE Observatory, Magnetic, at Madison, Wisconsin. E. W. Davis xii 455 United States Naval. Emma M. Converse iv 704 Obstructive, The Practical Man as an. F. J. Brain well ii 37 Ocean-Bed, Inequality of the (Misc.) x 250 -Currents, Causes of (Misc.) xiv 686 -Currents of Greenland and Iceland (Misc.) xviii 710 Ocean, Temperature of the (Misc.) v 507 Variability of the Level of the (Misc.) xviii 718 Oceanic Circulation, Wyville Thomson on (Misc.) ix 506 Oceanica, Black Races of. R. Verneau xviii 744 O'Connor, W. D. Life-Saving Service, United States xv 182 Octopus and its Prey (Misc.) iv 254 Odling, William. Discovery of the Elements i 474 Phlogiston, Revived Theory of ix 560 Odors and Life. F. Papillon vi 142 Offense and Defense, Animal Powers of ix 355 Oil on Rough Water (Misc.) xv 143, xvi 136 -Plants of French Guiana. J. Harmond xviii 384 -Regions, Pennsylvania (Misc.) xiii 252 Oils, Origin of Mineral (Misc.) xii 124 Old Age, Necessity of Carefulness in (Misc.) ii 511 Oleomargarine (Misc.) xiv 249 Olfactory Nerves. A. L. Child (Cor.) xvii 692 Onimus, M. Nervous Control of Animal Movements i 344 Ophthalmia, Contagious (Misc.) vi 377 Opium and its Antidote. C. Richet xii 555 -Eating and Intemperance (Misc.) xv 858 -Habit, The (Misc.) viii 767 -Habit, Treatment of the (Misc.) xi 763 Persian (Misc.) xix 716 -Poppy in France (Misc.) ii 384 -Smoking, Experiments in (Misc.) xv 429 Opossum, Habits of the (Misc.) ii 124 Opossums and their Young. W. S. Barnard viii 149 Optical Illusion, An (Misc.) viii 254 Optics, Modern, and Painting. O. N. Rood iv 415, 572 Some Simple Experiments in. E. A. Youmans xi 658 Orang-Outang at Home (Misc.) xv 854 The, and Man (Misc.) vii 758 Orange, The Osage (Misc.) ii 383 Ordeals and Oaths. E. B. Tylor ix 307 Organic Bodies, Artificial Preparation of. I. Remsen vii 726 Organisms and their Media. H. C. Bastian ix 215 Organ-Piano, The (Misc.) xiii 378 Originality, Rights of. Spencer's Priority. (Ed. Tab.) vi 114 Orion, Telescopic Research on the Nebula of. E. S. Holden v 257 Ormsby, R. M. K. Carlyle and the Darwins (Cor.) x 363 Ornament, Evolution in. C. F. Hartt vi 266 Ornamentation of Copper and Bronze (Misc.) vii 381 Ornithorhynchus, The Australian xvii 769 Osteophone, The (Misc.) xvii 142 9o THE POPULAR SCIENCE MONTHLY. VOL. PAGE Ostracism of a French Savant (Misc.) ii 764 Ostrich-Farming (Misc.) ix 636 Oswald, F. L. Climate and Forests xi 385 Dietetic Curiosities xiv 721, xv 30 Education, Physical. . .xviii 303, 456, 577, 753; xix 7, 145, 334, 450, 595, 721 ; xx 56 Fever-Factories xiv 143 Gymnastics, The Age of xiii 129 Serpent-Charm xv 606 Troglodytes, Modern xii 37 Zoological Enigma, A xvii 359 Otto of Eoses (Misc.) xix 135 Oudemans, J. A. C. Calendar, The Javanese xx 820 Oustalet, E. Aard-Vark, The, or Earth-Hog xiv 572 Monkey, The Pygmy xiii 184 Outerbridge, Jr., A. E. Divisibility of Gold and other Metals xi 74 Microphone and Magnifying of Sound (Cor.) xiv 233 Mind-Reading (Cor.) xii 362 Research, The Refinements of. xx 538 Overwork, Mental (Misc.) viii 765 Mental. R. Farquharson x 326 Owls, Our American. Samuel Lockwood xi 142 Oxygen Centennial, The. (Ed. Tab.) v 493, 628 Discoverer of. (Ed. Tab.) i 368 Dissolved in Water v 126 Effects of, inhaled at Different Temperatures (Misc.) xiv 118 Gas, Priestley's Discovery of. J. W. Draper v 385 in the Sun, Discovery of. (Ed. Tab.) xi 618 in the Sun, Draper's Researches (Misc.) xv 716 in the Upper Air (Misc.) xvi 575 Poisoning by (Misc.) iii 782 Oyster-Beds, Deterioration of American. F. Winslow xx 29, 145 Oyster, Longevity of the. S. Lockwood xx 477 Natural History of the. S. Lockwood vi 1, 157 Oysters, Biblical Prohibition of (Misc.) xiii 510 Destruction of, by Sewage (Misc.) xx 857 Fattening (Misc.) ix 637 Green Color of (Misc.) xviii 855 Ozone, Atmospheric Electricity and. G. M. Beard iv 456 by a New Process (Misc.) ii 507 -Generator, Bartlett's (Misc.) x 114 P Pacific, Topography of Bed of the (Misc.) v 508 Paget, Sir J. Medical Science, Cultivation of xix 774 Pain, Control of, by Mechanical Vibrations. G. n. Taylor xix 554 Mystery of. Grant Allen. A Poem (Misc.) xi 634 Uses of (Misc.) xiv 124 Paint, Luminous (Misc.) xvii 707 Properties of White (Misc.) xi 633 Painting, Effects of Faulty Vision in. R. Liebreich i 174 INDEX OF VOLUMES I TO XX. gl VOL. PAGE Painting, Modern Optics and. 0. N. Rood iv 415, 572 Paints, Why, crack and peel (Misc.) v 381 Paleontological Discovery, History and Methods of. O. 0. Marsh., xvi 219, 363 Paleontology, Rise and Progress of. T. II. Huxley xx 165 Palmer, Jr., J. A. Toadstool-Eating xi 93 Panama Canal, Our Policy respecting the (Ed. Tah.) xx 273 The (Ed. Tab.) xvi 842 Paper as a Building-Material (Misc.) ii 633 -Hangings, Poisonous (Misc.) ii 123 -Money, French Experiences with (Ed. Tab.) ix 615 Papillon, Ferdinand. Constitution of Matter iii 547 Death. Physiology of iii 270 Electricity and Life ii 526 Ferments, Fermentation, and Life v 542 Heat and Life ii 400 Heredity, The Phenomena of iv 55, 170 Light and Life ii 294 Nostalgia v 215 OUtuary (Ed. Tab.) iv 627 Odors and Life vi 142 Passions, Pathology of the iv 656 Passions, Physiology of the iv 532 Papuan Women and Feasts (Misc.) xix 427 Papyrus, An Ancient (Misc.) iv 251 Paradox, Explanation of the Ball- (Misc.) x 761 The Ball-. Thomas S. Crane x 725 Parasite in a Child's Mouth (Misc.) vii 506 Parasites and Messmates, Animal viii 670 in Food and Drink (Misc.) xix 712 Insect, in Muddy Trout-Ponds (Misc.) ix 763 Parchment, Substitute for (Misc.) iv 123 Paris-Green, The Use of (Misc.) vii 629 Parks, Our (Misc.) xiv 405 Parthenogenesis in Shrimps (Misc.) hi 399 Parsons, Jr., Samuel. Plants, Relative Hardiness of xviii 797 Parties, The Decline of (Ed. Tab.) . . xi 755 Partridge-Berries, White (Misc.) ii 254 Partridge, J. H. Birds-of-Paradise v 556 Furs and their Wearers iv 143 Humming-Birds v 277 Pascoe, C. E. Electric Signaling on English Railroads iv 581 Passions, Disease from Influence of. B. W. Richardson viii 60 Pathology of the. F. Papillon iv 656 Physiology of the. F. Papillon iv 532 Pasteur, L. Germ Theory, The xx 801 Sketch of, with Portrait xx 823 on Fermentation vii 709 Pastures, Copper-Poisoned (Misc.) vii 766 Patents, Novelty in. O. E. Lyman xv 612 Pathology, Scientific and Popular Experiments in (Misc.) xx 714 Patterson, J. Stahl. Forests and Fruit-Growing ii 194 92 THE POPULAR SCIENCE MONTHLY. TOI,. PAGE Patterson, J. Stahl. Negro, Increase and Movement of the xix 665, 784 Stone Age in Italy, Mommsen's History and the (Cor.) iii 111 Pauperism, Eelations of Hospitals to. W. G. Wylie ix 738 Pavement, A New Wood (Misc.) ii 255 Pavements, Asphalt ii 609 Modern Street. A. Cluss vii 80 "Wood (Misc.) x 118 Payn, James. Literature, Sham Admiration in xvii 48 Peabody Houses for the Poor (Misc.) ix 508 Museum of Natural History (Misc.) v 638 Peach-Trees, The Yellows in the (Misc.) xx 856 Peaches, Prolific (Misc.) viii 509 Pearce, S. A. Harmony, Imperfections of Modern xvi 508 Music, Oriental xviii 237 Piano-forte, The Modern xi 691 Pearls and their Origin (Misc.) xiv 693 Peck, L. W. Explosions from Combustible Dust xiv 159 Peirce, Benjamin. Sketch of, with Portrait xviii 691 C. S. Logic of Science xii 1, 286, 604, 705 ; xiii 203, 470 Pelican, An Aged (Misc.) v 254 Pen, A New Electric (Misc.) xv 285 Penikese, Anderson School at (Misc.) v 253 School, End of the (Ed. Tab.) viii 494 Penguin's Rearing of its Young (Misc.) xiv 547 Peppercorne, F. Soda a Remedy for Burns and Scalds xx 663 Peppermint-Culture (Misc.) xii 511 Pericardium, Puncturing the (Misc.) ii 637 Perrier, E. Transformations, New Views of Animal xvi 625 Pessimism and its Antidote. C. Nisbet xi 682 Petermann, A. II., Sketch of, with Portrait xiv 231 Petroleum. II. B. Cornwall ix 140 in Iron-making (Misc.) xvii 287 in Santo Domingo (Misc.) i 7G6 Products, Purification and Deodorization of (Misc.) x 251 Solidifying (Misc.) ii 635 Petroleum for Steam-making (Misc.) xvi 136 Pettenkofer, Max von. Air, Relations of the, to our Clothing x 654 Air, Relation of the, to our Houses xi 196 Ground-Air in its Hygienic Relations xi 2S0 Plants, Hygienic Influence of xii 417 Soil, Sanitary Relations of the xx 332, 4G8 Phrcodaria, The (Misc.) xix 285 Pharmacopoeia, An International (Misc.) v 760 United States (Misc.) xii 247 Phelps, J. W. Radiometer, The xiv 76 Thunder-Showers vii 340 Phenomena, Residual. P. Muir xv 101 Philadelphia Academy. J. S. Ivingsley xx 531 Building System of (Misc.) xi 510 Philosophy, English, in Germany (Ed. Tab.) ix 243 Fairbairn and the Synthetic (Ed. Table) xix 846 INDEX OF VOLUMES I TO XX. 93 VOL. PAGE Philosophy, Mythologies. J. W. Powell xv 795, xvi 56 Phin, J. Lightning-Eods, Form of vii 399, 746 Phlogiston, Kevived Theory of. William Odliug ix 560 Pholades, Boring-Organ of (Misc.) ii 253 Phonograph, Anticipations concerning the (Misc.) xii 756 Improved. Diaphragm for the (Misc.) xv 423 The. A. M. Mayer xii 719 The Edison (Ed. Tab.) xii 748 Phosphorescence, Animal vii 453 Vegetable. Ellen Prescott xvi 804 Phosphoric Acid (Misc.) ii 383 Photographic Process, A New xiii 441 Proofs, White Spots on (Misc.) ii 632 Photographing the Eye and Ear (Misc.) i 766 Photographs, Correctness of. H. Vogel vi 710 New Solar (Ed. Tab.) xii 748 Permanent (Misc.) i 250 Photography and. the Chemical Centennial. (Ed. Tab.) vi 115 Copying Designs by (Misc.) xiii 251 Growth of (Misc.) xiii 119 Improvements in (Misc.) xii 509 Progress in (Misc.) .... xviii 570 Eecent Eesearches in. R. Meldola v 717 Photometer, Deep-Sea (Misc.) ii 639 Photometry (Misc.) xx 428 Photophone in Research, The (Ed. Tab.) xix 114 The. Alexander G. Bell xvii 813, xix 186, 324 The New (Ed. Tab.) xvii 845 Photosphere and Sun-Spots. S. P. Langley v 532 Phrenology, The New. Henry de Varigny xviii 599 The Old, and the New. J. G. Clough. (Cor.) xv 265 A. Wilson xiv 475 Phylloxera, American Grape- Vines and the (Misc.) vii 762, x 511 Applications for (Misc.) xvi 718 The Grape. C. V. Riley v 1 Physical Science in English Schools x 23 Primary Concepts of Modern. J. B. Stallo: I. Theory of the Atomic Constitution of Matter iii 705 II. Atomic Constitution of Matter as a Postulate of Thought. . . iv 92 III. The Assumption of the Essential Solidity of Matter iv 219 IV. Inertia and Force iv 349 The Study of. C. Kingsley i 451 Physics in Secondary Schools. J. Trowbridge xv 159 Mathematical Investigations in. J. Lovering vi 308 Recent Progress of Solar. S. P. Langley xvi 1 Transcendental. P. R. Shipman xx 315 Physiological Chemistry. E. Drechsel xx 512 Physiology and Mind- Heading. George M. Beard x 459 Book, abroad (Ed. Tab.) xix 114 Elementary Instruction in. T. H. Huxley xi 668 Mental. J. C. Bucknill v 705 7 94 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Physiology, Study of. P. H. Pye-Smith xvi 43 Piano-forte, The Modern. S. A. Pearce xi 691 Pig, The Prehistoric (Misc.) ix 631 Pike, Luke Owen. Women and Political Power i 82 Pine, The Kauri (Misc.) x 123 Pipe, Antiquity of the Tobacco (Misc.) xvi 863 Pisciculture, Origin and Progress of (Misc.) xix 140 Pitcher-Plant, The (Misc.) vi 379 Planetary Rings and New Stars. D. Vaughan xi? 466 Planets, Do they vary in Color ? (Misc.) i 374 Intra-Mercurial. 0. Flammarion xiv 714 Plant Absorption of Diatoms (Misc.) x 254 and Animal Life, Analogies of (Misc.) xiii 509 A New (Misc.) xiv 690 -Battery, A (Misc.) ii 631 -Eaters of North America. S. Tenney x 678 -Growth, Atmospheric Electricity and (Misc.) xiv 247 Life, Electric Light and (Misc.) xx 569 Life, The Unit in. B. D. Halstcd xix 543 Migrations (Misc.) xix 430 Respiration (Misc.) xiv 403 Plants, Absorption of Nitrogen by (Misc.) x 510 Agency of, in Earth-building (Misc.) xvi 713 and Ammonia (Misc.) v 511 and Animals, Difference between. W. K. Brooks xiv 30 and Atmospheric Humidity (Misc.) xiv 688 and the Peopling of America. O. Kuntze xiv 78 Animal-like Functions of (Misc.) iv 382 ? Animals or (Misc.) xviii 430 Assimilative Power of (Misc.) xvi 142 Battle of Life among. M. T. Masters iii 75 before Appearance of Man, Saporta's World of xvi 446 Carnivorous (Misc.) vii 252, xii 758 Climbing. F. Darwin xvii 635 Darwin on the Movements of. E. A. Youmans xviii 498 Effects of Coal-Gas on (Misc.) ii 638 Fertilization of (Misc.) ix 765 Fifty Years' Study of the Distribution of (Misc.) xx 710 Functions of the Root-Hairs of (Misc.) ix 765 Have, a Pedigree ? W. D. Gunning v 129 How are, distributed ? (Misc.) vi 636 Hygienic Influence of. Max von Pettenkofer xii 417 Insect-catching (Misc.) v'i '66 Insect Fertilization of (Misc.) x 380 Insectivorous. E. R. Leland viii 45 Insect-killing (Misc.) viii 7G6 Local Distribution of. L. F. Ward ix 676 Longevity of. F. Hildebrand xx 657 Modes of Distribution of. J. F. James xvii 305 Movements of (Misc.) xiv 250, xx 421 Periodic Movements of the Foliage of (Misc.) ix 634 INDEX OF VOLUMES I TO XX. 95 VOL. PAGE Plants, Poisonous Leguminous (Misc.) xii 704 Poisonous to Sheep (Misc.) xvi 575 Relative Hardiness of. Samuel Parsons, Jr xviii 797 Respiration of. E. Alglave vi 60 Selective Power of (Misc.) ii 756 Sensation and Motion in (Misc.) iv 761 Spontaneous Movements in. A. W. Bennett ii 280 Taking Impressions of (Misc.) x 254 Variations in the Forms of Water- (Misc.) xviii 570 "Wild, Culture of (Misc.) i 376 Plating, Electro- (Misc.) . xii 252 Platinum, Edison's Experiments with (Misc.) xvi 134 Plow and Wheel-Carriage, Origin of the. E. B. Tylor xviii 448 Plowing, Steam (Misc.) ii 507 Pneumatic Dispatch (Misc.) v 255 Regulation of Clocks (Misc.) xii 251 Pneumonia, Elevator Employees and (Misc.) xviii 854 Poinier, P. Heat, History of Dynamical Theory of xii 206, 330 Poison, Arrow-, of the South-Sea Islands (Misc.) xix 714 Curari or Woorara. M. Girard xiv 369 -Proof Animals (Misc.) xv 858 ? What is a (Misc.) xv 284 Poisoning by Oxygen (Misc.) iii 782 Physiology of Arsenical (Misc.) xix 134 Poisons of the Intelligence — Hasheesh. C. Richet xiii 482 Poisson, J. Vanilla-Plant, The xv 642 Polar Expedition, The Bennett (Ed. Tab.) xv 557 Explorations, Recent. Translation by E. M. Converse vii 320 Polaris Expedition (Misc.) ii 253 Voyage, Results of the (Misc.) v 382 Pole, How to reach the (Misc.) x 508 Political Economy and Conservation of Force xi 329 Economy in Law Schools (Misc.) xii 121 Economy in the United States (Ed. Tab.) x 366 Economy, Sewing-Machine in xi 481 Economy, Study of. Henry George . . xvi 601 Institutions, Development of. Herbert Spencer: I. Preliminary xviii 1 II. Political Organization in general xviii 145 III. Political Integration xviii 289 IV. Political Differentiation xviii 433 V. Political Forms and Forces xviii 624 VI. Political Heads — Chiefs, Kings, etc xviii 721 VII. Compound Political Heads xix 197 VIII. Consultative Bodies xix 342 IX. Representative Bodies xix 577 X. Militant Type of Society six 750 XI. Industrial Type of Society xx 1 Science (Ed. Tab.) xviii 125 Politicians, Comparative Stupidity of. xii 162 Politics, Natural Selection in. D. H. Wheeler iii 230 96 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Politics, Science in (Misc.) xix 711 Pollock, F. Infants' Progress in Language xiii 587 Polyscope, The Electrical xvii 110 Pope and Anti-Pope. Carl Vogt xiv 320 Popular Science Monthly. A. L. Child (Cor.) xv 698 Beginning of the Fifth Year of the (Ed. Tab.) vii 110 Charges against the (Ed. Tab.) xx 404 First Year's Work of the (Ed. Tab.) ii 745 Supplements (Ed. Tab.) xi 238 Work and Influence of the (Ed. Tab.) iv 747 Population-Density and Mortality Rates (Misc.) xiv 6S6 Finding the Center of (Misc.) xx 420 in England, Decline of Country (Misc.) xx 140 Statistics of (Misc.) xv 858 War and. Alexander Duane (Cor.) x 614 Porcelain -Clay (Misc.) vii 760 Pork, Tbe Parasites in (Misc.) xiv 551 Porpoise, Anatomy of the (Misc.) v 763 Habits of the (Misc.) in 522 Portrait-Painting, Automatism in (Misc.) xvii 140 Portraits, Composite. Francis Galton xiii 460 Portraiture, Lunar Lore and. F. E. Fryatt xix 511 Positivism, Materialism and. W. D. Le Sueur xx 615 Post and Telegraph and International Relations. C. M. Dunbar xix 101 Postal Service, Union of the Telegraph and. A. B. Huet xix 400 Potassa, Qualitative Determination of (Misc.) x 762 Potato, Origin of the (Misc.) vii 127 -Beetle, Colorado. C. V. Riley vii 704 -Beetle, Colorado (Misc.) v 761 -Bugs poisonous ? Are (Misc.) vii 760 -Disease (Misc.) ii 250, v 125 -Disease, Drought and the (Misc.), vi 126 -Disease, Microscopic Aspects of (Misc.) v 125 -Disease, Origin of (Misc.) iv 123 -Rot, Lime-Soils and the (Misc.) iv 637 Potatoes, Influence of Color and Soil on (Misc.) x 635 Pottery, Aboriginal, of the Salt-Springs of Illinois. G. E. Sellers xi 573 Ancient American (Misc.) xv 575 of the Mound-Builders (Misc.) vi 380 Types of (Misc.) xviii 138 Pouchet, F. A., Death of (Misc.) ii 767 George. Instinct in Insects iii 12, 149 Pourtales, L. F. de, Sketch of, with Portrait xviii 549 Poverty, Progress and. C. M. Lungren xvi 721 Powder-Paper, Substitute for Gunpowder (Misc.) x 253 Powell, E. P. Earthworms (Cor.) xv 124 J. W. Colorado Valley, Physical Features of vii 385, 531 670 J. W. Philosophy, Mythologic xv 795, xvi 56 J. W. Sketch of, with Portrait xx 390 Power, Coal as a Reservoir of. R. Hunt i 738 Practical Man as an Obstructive. F. J. Bramwell ii 37 INDEX OF VOLUMES I TO XX. 97 VOL. PAGE Prairie and Forest, Distribution of (Misc.) xiii 122 Prairie-Dog, An African. Frank Buckland xvi 318 Prairies, Origin of (Misc.) x 633 Why, are treeless (Misc.) xix 424 Prayer-Test, TyndaU's (Ed. Tab.) ' vii 367 Precocity a Sign of Inferiority (Misc.) xvii 430 Cases of Kemarkable (Misc.) xvi 428 Preece, W. H. Electric Lighting, Recent Advances in xix 378 Electricity, Recent Wonders of. xx 669, 786 Prehistoric Race, Extinction of (Misc.) xi 124 Records xvi 545 Relics at the Centennial Exposition (Misc.) ix 508 Remains in California, Supposed (Misc.) xi 632 Mine in Southern Colorado. H. Gannett xvi 666 Times. T. M. Coan i 101 Prenatal and Infantile Culture. E. Seguin x 38 Prescott, A. B. Coffee and Tea, Chemistry of xx 359 Fruit-ripening, Chemistry of xii 460 Life, Material Resources of xi 339 Ellen. Phosphorescence, Vegetable xvi 804 G-. B. Edison's Telephonic and Acoustic Inventions xiv 129 Preservation of Meat (Misc.) i 637 of Wood (Misc.) i 508 Preservative Process, A New (Misc.) xvi 717 Press, Science and the. Ripley's Address on laying Comer-Stone of the Tribune Building (Misc.) iv 635 Prestel, M. A. F. Weather, Moon's Influence on the x 56 Preyer, W. Infant, Mental Development of the Human xvii 625 Priestley, Joseph (Ed. Tab.) i 368, v 497 T. H. Huxley vi 90 Sketch of, with Portrait v 480 Priestleyana (Misc.) vii 122 Priestley's Celebration at Northumberland (Misc.) v 504 Primitive Innocence (Misc.) xv 713 Man, Emotions in the. Herbert Spencer vi 331 Princeton, Science at. J. McCosh (Cor.) xviii 122 Printing and the Perpetuity of Modern Civilization (Misc.) xiv 685 Prize System and Mental Overwork (Ed. Tab.) xi 105 Probabilities, Logic of. C. West (Cor.) xiii 236 Problems, The Seven World-. Emil du Bois-Reymond xx 433 Proctor, R. A. Astronomical Achievement, An American x 446 Astronomy in America x 75 Jupiter, News from iv 433 Jupiter's Cloud-Masses, Movements of xi 81 Meteoric Display, Expected, November, 1880 xvi 247 Nebula, Great, in Orion iii 564 Planet, A Giant i 286 Scientific Research, Endowment of vii 354, 437 Sea, Finding the Way at , iii 717 Sketch of, with Portrait iv 486 Star or Star-Mist xii 148 7 98 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Proctor, R. A. Stars, Drifting of ii 224 Sun, Recent Eclipse of the i 17 Venus, Transit of, 1874 iii 355 Weather and the Sun iii 479 Proctor's Lectures, 1874 (Ed. Tab.) iv 116 Production, Over-, Over-Consumption or. O. B. Bunce xi 306 Progress and Poverty. C. M. Lungren xvi 721 Cynicism opposed to. W. A. Eddy xix 78 Forces of Human. Criticism of Henry George (Ed. Tab.) xviii 553 Instruments in Physical. J. Lovering vi 197 Progression and Retrogression. W. D. Gunning viii 180 Poverty, Recent Advance in the Law of Intellectual. B. V. Ab- bott xix 372 Prophecy, Scientific vii 17 Secular iii 732 Protection and Socialism (Ed. Tab.). ... xiv 389 Protoplasm. Michael Foster xi 422 and Life. G. J. Allman xv 721 Properties of. E. Haeckel viii 67 Study of (Ed. Tab.) xiii 746 Providence in Physical Affairs (Misc.) i 638 Psychic Phenomena (Misc.) xi 253 Psychology, Comparative, of Man (Ed. Tab.) viii 372 Comparative, of Man. Herbert Spencer viii 257 Development of v 288, 412 The New. Douglas A. Spaulding iii 32 Psychometric Facts. F. Galton xiv 771 Psycho-Physiological Sciences. J. R. Buchanan xi 721 Pulpit, Science from the. John Trowbridge vi 734 Pulse, Infrequency of (Misc.) vii 381 Listening to the (Misc.) xv 571 Pumpkins. Composition of (Misc.) xii 376 Punishment, Experiments in (Misc.) xvi 431 Vengeance in (Cor.) viii 746 Vengeance in (Ed. Tab.) xvi 555 Putnam, J. D. Insects and Flowers in Colorado (Cor.) x 612 Putrefaction and Fermentation. William Canniff (Cor.) x 742 and Fermentation, Cause of (Misc.) x 126 arrested by Pressure (Misc.) viii 247 Pye-Smith, P. H. Physiology, Study of. xvi 43 Pyrophone, The. M. Dunant vii 444 Q Quackery in the Medical Profession xx 681 Quarantine and Systematic Medical Inspection (Misc.) xviii 861 Quatrefages, A. De. Human Races, Crossing of the xvii 166 Man, Natural History of i 61, 208, 299 ; ii 541 ; v 513 Silk- Worms and Sericulture iii 657 Quinine, Substitute for (Misc.) iii 527 Supply (Misc.) iv 380 IXDEX OF VOLUMES I TO XX. 99 VOL. PAGE Rabbit, Rare Species of (Misc.) vi 252 Rabbits in New Zealand, A Plague of (Misc.) xi 379 Race, A Singular (Misc.) ill 525 Relics of an Ancient, in Eastern New York (Misc.) xvii 286 Traces of an Early, in Japan. E. S. Morse xiv 257 Races, Migrations of. F. Mtiller xvi 322 of Mankind, The. E. B. Tylor xix 289 Physical Characters of the Human. A. De Quatrefages ii 541 Radau, R. Earth, Interior of the xvii 289, 453 Will, The Velocity of the ii 360 Radcliffe, C. B. Evolution and Mind iii 359 Radiant Matter. "W. Crookes xvi 13, 157 Radiation, Freezing of a Lake by (Misc.) xvii 572 Intensity of Solar (Misc.) viii 252 Terrestrial (Misc.) viii 252 Radiations, Action of Dark. John Tyndall i 202 The Chemical. "W. J. Youmans vii 19 Radiometer, Note on the (Misc.) x 113 The (Ed. Tab.) ix 364 The. J. P. Cooke, Jr xiii 1 The. J. W. Phelps xiv 76 Rafinesque, C. S. (Misc.) ix 764 Raft, New French Life-saving (Misc.) v 510 Railroad Casualties. (Ed. Tab.) xvi 413 Railroads, Safety on Suburban (Misc.) xx 716 Railway, An Electrical (Misc.) xvii 285 Carriages, Cooling and Ventilating (Misc.) i 251 Locomotion, Economy of. J. W. Grover iii 146 Signal, Improved (Misc.) x 253 Railways, Inspecting, by Machinery (Misc.) x 126 Rain- Areas, Professor Loomis on (Misc.) xii 250 Raindrops and Hailstones, Formation of. x 522 on the Sea. Osborne Reynolds vi 732 Rainfall and Sun Spots (Misc.) xiv 831, xvi 861 Facts concerning (Misc.) i 504 Forests and vii 207 Forests and. P. F. Schofield (Cor.) viii 111 Influence of Trees on (Misc.) ii 123 Relation of Elevation and Exposure to (Misc.) xviii 714 Rainstorms, Great Fires and. John Trowbridge ii 206 Rain-Tree, Facts about the So-called (Misc.) xiii 119 Ramsay, A. C. Old Continents iii 573 Rankine, W. J. M. Sketch of, with Portrait xii 236 Raspberrry, Garden, American Origin of (Misc.) iv 510 Rat, A, in the Telegraph Service (Misc.) viii 254 Rats and Lead Pipes (Misc.) xviii 429 and Mice, How, use their Tails (Misc.) viii 764 Anecdotes of (Misc.) i 375 An Episode on .<■ iv 344 A Plague of (Misc.) xii 376 ioo THE POPULAR SCIENCE MONTHLY. VOL. PAGE Rats, Perforations of Lead Pipes by (Misc.) ' xviii 708 Rattlesnakes and their Bites (Misc.) ix 123 Rattle, Purpose of (Misc.) ii 767 Rayet, G. Observatories of Italy xi 538 Raymond, R. "W. Education, Requirements of Scientific iv 208 Reading as an Intellectual Process. E. O. Vaile viii 212 Records, Reproduction of Burnt (Misc.) vi 763 Recreation, Health and. B. W. Richardson xiv 780 Science and Philosophy of. G. J. Romanes xv 772 The Annual (Misc.) xv 284 Redfield, J. W. Mental Capacity, Measures of v 72 Reflex Action and Disease. T. L. Brunton xiv 639 Refraction of Sound (Misc.) viii 767 Refrigerating Machine, New (Misc.) iv 639 Refrigeration and Animal Heat (Misc.) I xix 278 Religion, Deeper Harmonies of Science and vii 66, 301, 573 ; viii 225 Evolution of Hebrew. Felix Adler ix 589 Science and, as Allies. J. T. Bixby ix 690 and Science, Conflict of. (Ed. Tab.) vi 361 and Science, Conflict of. ((Ed. Tab.) ix 757 and Science. J. "W. Dawson x 72 and Science. C. F. Deems viii 434 and Science. J. W. Draper vi 227 and Science. Tyndall ii 79 Seelye on Civilization and. (Ed. Tab.) xi 621 What constitutes. C. F. Deems. (Cor.) ix 239 Remsen, Ira. Chemistry and Medicine xv 214 Chemistry, Science vs. The Art of. x 691 Organic Bodies, Artificial Preparation of. vii 726 Renan, Ernest. Spinoza xi 216 Rendu and his Editors. J. Tyndall v 447 Reproduction, Growth and. A. B. Blackwell v 606 of Organs in Fish (Misc.) v 511 Reptile, Bird or— which ? H. O. Forbes xiii 719 Reptiles, Flying, of the Chalk Formation in Kansas i 380 New Fossil (Misc.) xii 757 Reptilia, New Order of Extinct (Misc.) xii 378 Research, Endowment of (Misc.) xix 572 Systematic Promotion of (Misc.) xiii 758 The Refinements of. A. E. Outerbridge, Jr xx 538 Resonators, Metallic Anti- (Misc.) xx 140 Respiration and Versification (Misc.) v" 510 Artificial, in Snake-poisoning (Misc.) iii 655 Effect of Physical Training on (Misc.) xviii 284 New Method of Artificial (Misc.) xii 252 of Plants. E. Alglave vi 60 Respirator, A New (Misc.) v" 251 A New (Misc.) x 122 Restrictive Tendencies in Germany (Ed. Tab.) xiv 6 < 6 Retina, Retention of Impressions by the (Misc.) X1 252 Retribution, Animal (Misc.) sx 861 INDEX OF VOLUMES I TO XX. 101 VOL. PAGE Eetrogression, Progression and. W. D. Gunning viii 180 Reviewers, Replies to the Quarterly. Herbert Spencer iv 541 Revivals and Religious Insanity (Misc.) viii 3S3 Reynolds, Osborne. Raindrops on the Sea vi 732 Rheumatism, Salicylic Acid in (Misc.) xii 248 Rhine, A. H. Night-Schools in New York and Paris xvii 681 Schools of America, Early Free xvi 663 Rhinoceros, Fossil, in Siberia (Misc.) xv 573 New Species of (Misc.) ii 380 Rhinoscope, Laryngoscope and. F. Seeger xii 166 Richardson, B. "W. Alcohol, Physiological Position of i 219 Chloral and other Narcotics xv 491, 646 Dress in Relation to Health xvii 182 Euthanasia, Natural viii 617 Health and Recreation xiv 780 Passions, Diseases from Influence of viii 60 Sleep, Physiology of i 4H Richet, 0. Chloroform xii 738 Hysteria and Demonism xvii 86, 155, 377 Opium and its Antidote xii 555 Poisons of the Intelligence — Hasheesh xiii 482 Rigg, Arthur. Axes and Hatchets, Ancient and Modern ix 186 Hammers and Percussion ix 11 Tools, Concerning Mechanical x 173 Riley, C. V. Grape-Vine Pest v 158 Jiggers (Cor.) xix 845 Phylloxera, The Grape v 1 Potato-Beetle, The Colorado vii 704 Rio Madeira, Valley of the (Misc.) vi 251 Riordan, R. Telegraphy, Recent Advances in ix 71 Ritter, Carl. Sketch of, with Portrait xvi 689 River-Beds, Changes in (Misc.) iii 127, viii 122 The Old, of Middle California (Misc.) xvi 858 River Hydraulics. C. E. L. B. Davis (Cor.) vi 236 Rivers, Fish- Lite and Pollution of (Misc.) vii 378 Hydraulics of Great v 327 Robin, Usefulness of the (Misc.) vi 124 Value of the, to the Agriculturist (Misc.) xiv 251 Robinet, M. G. Cemeteries and Health xix 657 Robson, W. H. Fly, Development of the House- xv 618 Rock-Crystals, Gathering (Misc.) x 383 -Structure. J. M. Mello ix 426 -"Weathering. A. Geikie xviii 654 Rocks, Age of Metamorphic (Misc.) iv 509 Chemistry of. C. C. Merriman iv 694 Source of Organic Matter in Igneous (Misc.) xiv 688 Rodents, Fossil and Living (Misc.) xx 423 Rodriguez, Extinction of Animals in (Misc.) viii 252 Rogers, William B. Sketch of, with Portrait ix 606 Romanes, George J. Ants, Intelligence of xix 495, 816 Conscience in Animals ix 80 102 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Romanes, George J. Evolution, Reply to Fallacies of xvi 101 Hypnotism xviii 108 Instinct, Plasticity of viii 449 Intelligence, Animal xiv 214 Nerves, Beginning of, in Animal Kingdom xiv 303 Recreation, Science and Philosophy of xv 772 Rood, O. N. Color, The Constants of ix Gil Colors, The Contrast of xiv 1 Optics, Modern, and Painting iv 415, 572 Rood's Chromatics (Ed. Tab.) xvi 274 Root-Growth, A Singular (Misc.) xvii 427 Royal Institution, The, and the Society of Arts. B. H. Becker vi 653 Society of Great Britain (Misc.) vi 759 Rubbish, Respecting xvi 97 Riicker, Professor. Soap-Bubbles ix 575 Ruggles, S. B. Dead, The Ownership of the viii 322 Rumford Medals, The (Ed. Tab.) ix 244 Rupert's Drops, Prince. William Leighton, Jr viii 315 Ruschenberger, W. S. W. Natural Sciences, Academy of, of Phila- delphia (Cor.) ix 747 Russell, C. P. Hydrophobia, Some Superstitions of vi 174 Malaria ix 416 Vital Statistics x 697 J. C. Lakes, Formation of ix 539 Irwin. Sciences, Uncertainty and Variety of the ix 351 Russia, Material Resources of European (Misc.) xiii 635 Ryder, J. A. Armadillos, Gigantic Extinct xiii 139 s Sabbath, The. John Tyndall xviii 246, 310 Sabine, Sir Edward. Sketch of, with Portrait ii 238 Sacc, Dr. Cotton Fibers and Fabrics ii 161 Sack-Tree, The (Misc.) iii 527 Safford, M. J. Lightning, Curious Effect of (Cor.) xvi 266 Sahara, Artesian Wells and the. S. Schroeder xvi 530 Fertilization of the Algerian (Misc.) xvii 138 M. Soleillet on the (Misc.) xix 571 Salamander, An Aquatic (Misc.) ix 763 casting off its Outer Skin (Misc.) x 252 Salicylic Acid in Rheumatism (Misc.) xii 248 in Wine (Misc.) xi 251 Saliva and the Gastric Juice (Misc.) xix 129 Salmon, Growth of. C. E. Fryer iv # 27 Industries of Oregon (Misc.) xvi 573 of the Pacific Coast (Misc.) xix 565 Story of a. D. S. Jordan xix 1 Salt-Bed, A Remarkable, at Goderich, Ontario (Misc.) xi 505 Salt Deposit, Curious Case of. W. W. Wotherspoon (Cor.) xi 236 Deposit in Central New York, A New (Misc.) xiv 124 Lake, Great, Ancient Condition of (Misc.) ix 633 Lake, The Freezing of a (Misc.) xx 858 INDEX OF VOLUMES I TO XX. 103 VOL. PAGE Salt, Manufacturing of Sea-, in San Francisco (Misc.) xiv 247 Saltpeter in the Amarantus Blituni (Misc.) iii 526 Sand, Sonorous (Misc.) vi 764 Sand-Blast, Action of (Misc.) jy 511 -Blast, The. W. S. Ward viii 300 -Dunes, Formation of. E. Lewis, Jr viii 357 Sane Persons, Visions of. Francis Galton xix 519 Sanitary Advantages of the Pail, over the Water - Closet, System (Misc.) x 123 Improvement, Efficacy of (Misc.) xviii 430 Protection Associations (Misc.) xix 141 Reform in India (Misc.) i 373 Reformer, Woman as a (Misc.) xix 427 Science and Public Instruction. A. D. White iv 421 Science, Applied. J. R. Black ii 665 Santorin, Volcano of xvii 534 Sap in Trees, Circulation of (Misc.) xviii 140 New Theory of Flow of (Misc.) xiii 767 Saratoga, Mineral Springs of. C. F. Fish xix 24 Sardines (Misc.) ii 126 Sargassum (Misc.) xvi 573 Saturn, The Ringed Planet iv 39 Jupiter and, Physical Condition of. D. Trowbridge xi 233 Saurians, Development of the Limbs of (Misc.) xvii 284 Sauvage, E. Archer-Fishes, The xii 302 Fishes, Amphibious ix 546 Matamata, The xvi 684 Savage Races, Decline of (Misc.) x 765 Savagism and Civilization. H. H. Bancroft vii 195, 332 Curious Survivals of (Ed. Tab.) xv 268 Savants, Reminiscences of Deceased. Carl Vogt xiii 20 Savings- Banks and State Control (Ed. Tab.) xii 238 Saxon, J. W. Differences of Things xii 53 Schellen, II. August and November Meteors. i 385 Nebula?, Constitution of iii 129 Schipka Cave, Human Fossil of the (Misc.) xix 571 Schmidt, Oscar. Socialism, Science and xiv 577 Schneider, Aime. Moners, Hackel's iv 181 E. Tides, The xi 271 Tides, The , xii 226 Schofiekl, P. F. Rainfall, Forests and (Cor.) viii 111 School, A New Scientific. Lafayette College (Ed. Tab.) iv 241 Dietaries. By M. D i 590 Life and Eyesight (Misc.) i 760 Life, Hygienic Conditions of (Misc.) xvii 863 -Room, Daylight in the. M. Javal xvi 517 Schools, Artificial Production of Stupidity in i 129 Garden- (Misc.) xii 757 of America, Early Free. A. H. Rhine xvi 663 Physical Science in English x 23 Science-Teaching in English. W. Tuckwell viii 281 io4 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Schools, Scientific Normal. Agassis Penikese School of Natural History (Ed. Tab.) iii 113 Schroeder, S. Artesian Wells and the Sahara xvi 530 Schumacher, P. Aboriginal Settlements on Pacific Coast x 353 Schuster, A. Spectroscopy, Teachings of Modern xix 468 Schiitzenberger, P. Spontaneous Generation, Air Germs and ix 91 Schwatka's Arctic Journey (Misc.) xviii 277 Science, A Dangerous Tendency in (Misc.) xx 715 allaying National Antipathies (Misc.) vii 764 A Half-Century of. Sir John Lubbock xx 65, 193 American, versus American Colleges. F. W. Clarke , . ix 467 and Culture. T. H. Huxley xviii 159 and Education, Liberty of. HaeckeVs Address, and Virchow's Reply (Ed. Tab.) xiii 107 and Genesis. J. C. Mahin (Cor.) vii 487 and Immortality. T. W. Fowle i 26 and Literature. "William Brackett xv 166 and Mental Improvement. J. Le Conte xiii 96 and Morality. Gold win Smith xx 753 and our Educational System. F. A. P. Barnard ii 695 and Philosophy (Ed. Tab.) iv 619 and Public Affairs. A. D. White. ii 736 and Eeligion. J. W. Dawson x 72 and Religion. C. F. Deems viii 434 and Religion. J. W. Draper vi 227 aud Religion. J. Tyndall ii 79 and Religion as Allies. J. T. Bixby ix 690 Conflict of (Ed. Tab.) vi 361, ix 757 Deeper Harmonies of vii 66, 301, 573, viii 225 and Social Reform (Ed. Tab.) vi 504 and the Logicians. D. Boyd ix 224 and the Press. Ripley's Address on laying Corner-Stone of the Tri- bune Building (Misc.) .... iv 635 and Ventilation (Misc.) x 760 and War (Ed. Tab.) xiv 817 Backwardness of the Ancients in Natural. C. von Littrow ix 438 Claims of, in Education (Ed. Tab.) viii 112 Civilization and. E. du Bois-Reymond xiii 257, 385, 529 Dangers and Securities of (Cor.). Parke Godwin's Speech at Tyn- dall Banquet iii 240 Denationalizing (Misc.) sii 126 Detroit Meeting of American Association for Advancement of (1875) (Misc.) vii 755 Dread and Dislike of. George H. Lewes xiii 410 Education, and Aristocracy iv 480 English and American. J. W. Draper ii 734 from the Pulpit. John Trowbridge vi 734 Godwin on Limits of (Ed. Tab.) ii 746 Importance of the Cultivation of. J. Henry . .' ii 641 in America. J. W. Draper x 313 in the Argentine Republic. C. G. Wheeler ix 463 INDEX OF VOLUMES I TO XX. 105 YOI.. PAOB Science in Educational Discipline (Ed. Tab.) iii 510 in English Schools viii 639, xiii 558 in French Schools (Misc.) xviii 573 in Germany and England (Ed. Tab.) viii 369 in Norway (Misc.) xi 125 in Primary Schools, Lubbock on (Misc.) xvi 429 in Relation to Teaching (Ed. Tab.) xiii 621 in the Household (Misc.) ii 757 in the United States (Ed. Tab.) vi 238 in the United States (Misc.) x 115 Liebig's Influence on German (Misc.) viii 639 Minister for England (Misc.) v 251 Narrowness among Men of (Ed. Tab.) xii 108 not atheistic (Ed. Tab.) xvii 124 Physical, The Study of. C. Kingsley i 451 Primers, Misuse of the (Ed. Tab.) xvii 269 Recent Progress in Natural ii 597 Scholastic Prelude to Modern. II. D. Macleod xx 735 Scope of. TyndalVs Belfast Address (Ed. Tab.) vi 620 Societies for the Diffusion of (Ed. Tab.) x 497 Southern Illinois Academy of (Misc.) x 763 Speculation in. Discusses J. L. Smith's Address (Ed. Tab.) iii 762 Speculation in. J. L. Smith iii 741 Sphere and Limits of. Parke Godwin (Cor.) iii 105 Study of Natural, in Schools (Ed. Tab.) xi 367 vs. The Art of Chemistry. Ira Remsen x 691 Martyrdom of. J. W. Slater xvii 71 Promotion of (Ed. Tab.) ix 494 -Teaching, An Experience in. S. M. Ward xx 242 -Teaching for the Young (Misc.) ix 119 -Teaching in English Schools. W. Tuckwell viii 281 -Teaching, Progress of Higher. W. H. Stone xix 676 Warfare of. A. D. White viii 385, 553 Warfare of. C. F. Deems (Cor.) viii 627 Warfare of (Ed. Tab.) viii 493 Women and the Study of (Misc.) xiv 119 Sciences, More Room for the (Ed. Tab.) xiv 674 National Academy of (Misc.) xv 280 Spencer's Classification of the Abstract. G. B. Halsted (Cor.) x 609 Uncertainty and Vanity of the. Irwin Russell ix 351 Scientific Advance in Germany (Misc.) i 251 Apparatus (Misc.) v 253 Apparatus, Exhibition of (Misc.) viii 638 Apparatus, Exhibition of, in London (Misc.) ix 510 Association, Plea for an International (Misc.) xii 249 Associations (Misc.) i 637, xi 505 Associations, Meetings of American and British (Ed. Tab.) xiii 745 Club, Vienna (Misc.) xi 632 Controversy, Bigotry in. Review of Mivarf s Lessons from Nature. . ix 324 Course of Study. F. W. Clarke xiii 187 Culture. J. P. Cooke, Jr vii 513 106 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Scientific Culture and Religious Faith. E. A. "Washburn vii 62 Dabblers. F. W. Clarke i 594 Expedition around the World, Proposed (Misc.) xi 249 Institutions, Haeckel on (Misc.) viii 502 Instruments, A Collection of Quaint (Misc.) xx 858 Men, Causes which create. Francis Galton iii 65 Research, Endowment of. R. A. Proctor vii 354, 437 Teaching in the Colleges (Ed. Tab.) xvi 556 Theorizing. Discussion of ParTce Godwin"1* Speech at Tyndall Ban- quet (Ed. Tab.) iii 245 Treatise, The First Popular. S. P. Langley x 718 "Work, Requirements in (Misc.) iv 762 Scientist, An Ancient xviii 833 Scorpion, Fight between a Mouse and a (Misc.) ix 377 Suicide of the (Misc.) xvi 712 Scotland, Summer Temperature of (Misc.) vii 506 Scott, R. H. Birth, Life, and Death of a Storm xv 684 Sea, Deep-, Bottom (Misc.) vi 634 Deep-, Deposits (Misc.) x 378 Deep-, Explorations off the Coast of France (Misc.) xviii 855 Deep-, Investigation. J. G. Buchanan xix 59 Great Primitive European (Misc.) xix 863 Milky (Misc.) xvii 573 Problems of the Deep. T. H. Huxley iii 451 Proposed Inland, in Algeria. J. D. Champlin, Jr viii 665 Rain-Drops on the. Osborne Reynolds vi 732 Sirens of the. W. H. Larrabee xx 621 -Depths — Challenger Expedition iii 257 -Salt in Portugal (Misc.) iii 252 -Side Studies. S. Tenney xiii 312 -Soundings without a Line (Misc.) ix 253 -Water, Discolored (Misc.) xiii 253 Seas, Inland, Physical Conditions of (Misc.) iv 378 Seal-Fishery, Cruelties of the (Misc.) iii 125 -Fishery, The Scandal of the (Misc.) xii 255 Searle, A. Convent of the Capuchins xvi 673 Secchi, P. A. Sketch of, with Portrait xii 742 Seddon, J. P. Warming of Houses ii 472 Sedgwick, Rev. Adam, Death of (Misc.) ii 767 Seeds, Fossil. S. Meunier xx 778 Fruits and. Sir John Lubbock xix 156, 354 Vitality of (Misc.) vi 760 Seeger, F. Laryngoscope and Rhinoscope xii 166 Seguin, Edouard. OUtvary (Ed. Tab.) xviii 268 Seguin, E. Prenatal and Infantile Culture x 38 Seely, G. B. Luminous Phenomenon, Interesting (Cor.) xvi 554 Selection, Natural (Misc.) xiv 121 The Doctrine of Natural. A. R. Wallace iii 22 Selenium, Action of Li^ht on (Misc.) x 116 Self-Control, Loss of, in Battle (Misc.) ix 507 Sellers, G. E. Pottery, Aboriginal, of the Salt-Springs of Illinois xi 573 IXDEX OF VOLUMES I TO XX. 107 VOL. PAGE Senior Wrangler, Punishing a. Herbert Spencer v 144 Sensation. T. H. Huxley xv 86 Sense, Evolution of a New. W. A. Eddy xvi 66 Senses, Hallucinations of the. H. Maudsley xiii 698 Septic Organism, A New (Misc.) xiii 511 Sericulture in Brazil (Misc.) iv 250 Serpent-Charm. W. J. McGee xv 841 F. L. Oswald xv 606 Serpents, Concerning. Elias Lewis, Jr iv 257 Servetus, Michael. Sketch of, by M. Mauris, with Portrait xi 91 Sewage-Farming (Misc.) xix 285 Fertilization (Misc.) iv 507 in College Education (Ed. Tab.) xvii 693 Utilization of (Misc.) iv 767 Utilization of, in England (Misc.) x 123 Sewerage in London, Study of (Ed. Tab.) xviii 414 Sewer-building (Misc.) xiii 121 Sewer-Gas, Action of, on Lead Pipes (Misc.) i 251 Sewer- Waters, Purification of. M. E. Aubrey- Vitet xviii 806 Sewing-Machines in Political Economy xi 481 Sex, Conditions determining (Misc.) i 764, v 124 Equality and Inequality in. G. Delauney xx 184 Genesis of. J. Le Conte xvi 167 in Mind and in Education. H. Maudsley v 198 in Plants (Misc.) v 124 Is, determined by Nutrition ? (Misc.) iv 761 Sexes, Disproportion of the, in Germany (Misc.) viii 255 Equality of the ii 552 Equality of the. A. B. Blackwell (Cor.) ix 362 Future Relation of. F. E. White (Cor.) vi 614 Mental Powers of the (Ed. Tab.) xx 275 Psychology of the. Herbert Spencer iv 30 Sexual Cerebration. E. Van De Warker vii 287 Selection among the Monkeys (Misc.) x 379 Seychelles Islands, Notes on the (Misc.) i 505 Seymour, Horatio. Crime, Causes of ii 589 Shad in the Ohio River (Misc.) xi 505 Shadows, Images and. W. J. Youmans .• iv 665 Shark, Habits of the Thresher- (Misc.) xvi 139 The Shovel-Nosed. Lady Verney iv 65 Sharks x 348 Sharpey, William. Brain, Re-education of the Adult xv 455 Shaw, George M. How Sound and Words are produced xiii 43 Telephone, The xii 559 Sheath-Bill, The. J. H. Kidder viii 657 Sheep, Coat of the Rocky Mountain (Misc.) xiii 764 poisoned by Plants (Misc.) xvi 575 Shells, Ancient and Modern (Misc.) xx 136 from Colorado at the Centennial (Misc.) x 248 Shepherd-Dog, Clever (Misc.) v 127 Shipman, P. R. Classics, The, that educate us xvii 145 io8 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Sliipman, P. R. Physics, Transcendental xx 315 Ships, Air-Bags for raising (Misc.) ix 632 Siberia, Reopening of an Old Route into (Misc.) xi 378 Sick-Room, Hints for the ix 173 Sight and the Visual Organs. Dr. A. von Graefe i 457 Signal, Improved Railway (Misc.) x 253 Service, Extension of the. J. Trowbridge xx 507 Signaling, Electric, on English Railroads. 0. E. Pascoe iv 581 Silica, Appropriation of, by Plants (Misc.) ix 631 as a Basis of Paint (Misc.) ii 632 Silk Fabrics, Deterioration of (Misc.) xi 636 Goods, Test for (Misc.) ii 383 -School Farm, Proposed (Misc.) xiii 759 Silks, Wild (Misc.) xvii 137 Silk- Worm, Length of Thread of the (Misc.) iv 508 -Worm Moth, Escape of the, from its Cocoon (Misc.) xiv 122 -Worms and Sericulture. A. De Quatrefages iii 657 -Worms, Lettuce as Food for (Misc.) ix 121 -Worms, Rearing, in England (Misc.) xvii 280 Silliman, Benjamin. Sketch of, with Portrait xvi 550 Silver-bearing Sandstones (Misc.) xi 764 Salts, Sensitiveness of, to Light (Misc.) vii 766 Simmons, W. E. Aquarium, The v 687 Bears vi 281 Gas Manufacture and Gas Companies x 478 Simonin, L. Heat, Industrial Uses of Solar ix 550 Singing- Flames and Inaudible Vibrations (Misc.) xii 119 Sirenia, The (Misc.) vii 760 Sirens of the Sea, The. W. II. Larrabee xx 621 Sirius, The System of. C. Flammarion xii 47 Skinner, A. N. Comets six 790 J. J. Springs and Wells, Why do, overflow ? xvi 397 Skull-Worship (Misc.) xix 276 Skunk-Madness (Misc.) v 510 Slack, H. J. What is Jupiter doing? xvi 737 Slag as a Building Material (Misc.) ii 637 Utilization of Blast-Furnace (Misc.) xii 762 Slater, J. W. -Development, Rate of Animal xvii 254 Science, Martyrdom of. xvii 71 Sleep and Digestion (Misc.) vii 628 Physiology of. B. W. Richardson i 411 Small-pox Epidemic, Cost of a viii 510 Smell, Extraordinary Development of the Sense of (Misc.) xii 125 Smith, Adam, Ilonor to (Ed. Tab.) x 496 Edward. Foods, Nature and Influence of iii 441 Gold win. Government, Decline of Party xi 734 Goldwin. Government, Machinery of Elective xx 628 Goldwin. Morality, Science and xx 753 Goldwin, on Morals (Ed. Tab.) xvi 267 Goldwin. Suffrage, Female v 427 J. L. Sketch of, with Portrait vi 233 IXDEX OF VOLUMES I TO XX. 109 VOL. PAGE Smith, J. L. Speculation in Science iii 741 R. A. Ventilation i 356 Snake-Affection (Misc.) xiii 126 A Snake-eating (Misc.) vii 765 A Two-Headed (Misc.) xv 715 A Useful (Misc.) xiv 123 Curious Behavior of a (Misc.) viii 507 "Water-, Fight between a Trout and a. A. W. Chase (Cor.) x 234 Snakes (Misc.) xvi 571 and Snake-Poison (Misc.) xvii 284 Australian (Misc.) xx 567 of India, Venomous (Misc.) ii 510 Pet (Misc.) x 119 Shedding their Skins (Misc.) xvi 710 Swallowing their Young (Misc.) iii 783 Snoring and how to stop it. J. A. "Wyeth xi 704 Soap-Bubbles. Professor Pucker ix 575 Social Development, Climate and. Herbert Spencer v 322 Distinction, Traditional Origin of (Misc.) xvi 430 Evolution. J. E. Cairnes vi 604 Evolution, Cairnes on (Ed. Tab.) vi 616 Experiments in Utah. J. H. Beadle . ix 479 Reform, Science and (Ed. Tab.) vi 504 Relations of the Future (Misc.) xv 568 Science Association (Ed. Tab.) v 367, vii 365 Science, Hamilton on (Ed. Tab.) ix 619 Science, Harris on (Ed. Tab.) xv 702 Science, Present Status of. R. S. Hamilton ix 602 Science, Spencer's Principles of Sociology (Ed. Tab.) xii 367 Socialism, Protection and (Ed. Tab.) xiv 389 Science and. Oscar Schmidt xiv 577 Societies, Predatory and Industrial. Herbert Spencer ix 718 Society as an Organism. Herbert Spencer ix 1 The Science of (Ed. Tab.) i 116 Sociology and Biology. J. Le Conte xiv 325, 425 and Theology at Yale College (Ed. Tab.) xvii 265 Spencer's Principles of (Ed. Tab.) ii 240, v 369 Study of (Ed. Tab.) iv 242 Study of. Herbert Spencer : I. Our Need of it i 1 II. Is there a Social Science ? i 159 III. Nature of the Social Science i 513 IV. Objective Difficulties i 641 V. Objective Difficulties ii 1 VI. Subjective Difficulties, Intellectual ii 257 VII. Subjective Difficulties, Emotional ii 450 VIII. Educational Bias ii 564 IX. Bias of Patriotism ii 708 X. The Class Bias iii 45 XI. The Political Bias iii 172 XII. The Theological Bias iii 340 8 no THE POPULAR SCIENCE MONTHLY. VOL. PAGE Sociology, Study of: XIII. Discipline iii 419 XIV. Preparation in Biology iii 594 XV. Preparation in Psychology — Mental Science and Sociology . . iii 676 XVI. Preparation in Psychology — Psychology of the Sexes iv 30 XVII. Conclusion. Transition of Institutions iv 129 Soda a Remedy for Burns and Scalds. F. Peppercorne xx 663 -Lakes of Wyoming (Misc.) viii 767 Soil Analysis, Value of (Misc.) xx 566 Nitrogen of (Misc.) v 765 Relation of Local Diseases to the Nature of the (Misc.) ii 382 Sanitary Relations of the. Max von Petteukofer xx 332, 468 Soils, Action of Plaster on (Misc.) ii 251 as Filters (Misc.) xvii 572 Poisoned (Misc.) vi 637 Solar Appendages, The (Ed. Tab.) xvi 121 Machine, A (Misc.) xviii 283 Photographs, New (Ed. Tab.) xii 748 Radiation, Intensity of (Misc.) viii 252 Spectrum, Experiments on (Misc.) i 631 Spots, Father Secchi on (Misc.) vii 633 System and its Neighbors. 0. B. Warring xvii 612 System, F aye's Theory of the (Misc.) xviii 858 Solaville, M. de. Duration of Human Life xx 95 Soldering by Pressure (Misc.) xx 862 Somerville, Mrs. Mary (Ed. Tab.) ii 500 Somnambulism (Misc.) xix 711 Sound and Fog-Signals (Misc.) viii 380 find Radiant Heat. John Tyndall xx 650 and Words, How, are produced. George M. Shaw xiii 43 Controversy between Tyndall and Henry viii 477 Controversy between Tyndall and Henry (Ed. Tab.) ix 751 Experiments in xiv 65 Experiments on (Misc.) ii 378 into Light, Transformation of (Misc.) xviii 142 Magnifying. Microphone (Ed. Tab.) xiii 367 Mayer on (Misc.) ix 633 Measuring Distances by (Misc.) ix 251 -Producing Spider (Misc.) ix 383 Refraction of (Misc.) viii 767 -Signals (Misc.) xix 429 The Motions of. J. Tyndall vii 410 Tyndall on (Misc.) xiv 832 Vibrations, Making, visible (Misc.) xiv 834 Waterfalls sensitive to (Misc.) ii 383 -Waves, Water-Waves and. J. N. Lockyer xiii 166 -Waves. Wave- Action in Nature iii 1 Sounding Apparatus, Improved Deep-Sea (Misc.) iv 255 Soundings, W. Thomson on Deep-Sea (Misc.) xiv 119 Sounds, Audible and Inaudible (Misc.) iii 781 Discrimination and Memory of (Misc.) xvi 428 INDEX OF VOLUMES I TO XX. in VOL. PAGE Sounds of Nature, Mysterious. R. Springer xvii 772 produced by Blowing into a Flame (Misc.) is 125 South American Observations, Agassiz's i 505 American Valley, Remarkable (Misc.) vi 251 Space, New Ideas about. G. B. Halstead (Cor.) xi 364 New Ideas about. L. Kennon (Cor.) xi 749 Spalding, D. A. Instinct and Acquisition viii 310 Instinct in Young Birds ii 561 Psychology, The New iii 32 Spang Collection of Minerals. A. R. Leeds iv 443 Sparrow, About the English (Misc.) xi 506 Death to the English (Misc.) xiii 637 English (Misc.) ii 508 English. Henry Bergh (Cor.) xv 409 Indictment of the English (Misc.) v 763 Observations of the English. J. D. Hicks (Cor.) xvii 552 Sparrows, A Defense of the (Misc.) xiv 254 Bergh and the (Ed. Tab.) xv 412 Species, A Lost, rediscovered (Misc.) vi 762 Chain of. L. Johnson v 313, 460, 568 ," Coming of Age of the " Origin of. T. H. Huxley xvii 337 New, by Sudden Variations (Misc.) v 764 Transmutation of (Misc.) vi 253, ix 122 ? What are. T. H. Huxley ix 409 Spectroscope, A Home-made. J. J. Furniss xv 808 Evolution and the. F. W. Clarke ii 320 Spectroscopy, Teachings of Modern. A. Schuster xix 468 Spectrum, Action of Different Rays of the (Misc.) xx 139 Analysis, Real Discoverer of (Misc.) xx 568 Solar, Experiments on (Misc.) i 631 Speculation in Science. J. L. Smith iii 741 Speech, Infirmities of vii 463 Infirmities of. G. J. Hagar (Cor.) viii 366 How, is produced. George M. Shaw xiii 43 Localization of Faculty of (Misc.) iv 125 Tongueless. W. J. Youmans iii 627 Spelling, With Reference to (Ed. Tab.) vii 233 Spence, Payton. Voluntary Motion xiii 444 Spencer, A. G. Women, Legal Position of Married xviii 643 A Cure for Skepticism. C. C. Bonney (Cor.) xi 487 and Carpenter (Ed. Tab.) i 754 and Evolution. E. L. Youmans vi 20 and the Women. S. S. Hennell (Cor.) iv 746 before English Copyright Commission xiv 296, 440 Crusher, Another (Ed. Tab.) iv 621 Herbert. Ceremonial Government, Evolution of, xii 385, 545, 641 ; xiii 25, 146, 292; xiv 17 Consciousness under Chloroform xiii 694 Criticisms corrected xvii 795 ; xviii 101, 387 Criticisms, Replies to iv 295, 402 Domestic Retrospect and Prospect xi 513 112 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Spencer, Herbert. Family, Evolution of the xi 129, 257 Idol-Worship and Fetich- Worship viii 158 Marriage, Theories of Primitive x 272 Martineau on Evolution i313 Political Institutions, Development of, xviii 1, 145, 289, 433, 624, 721 ; xix 197, 342, 577, 750 ; xx 1 Portrait of (Ed. Tab.) v 244 Primitive Man, Emotions in the vi 331 Psychology, The Comparative, of Man viii. 257 Punishing a Senior Wrangler v 144 Keviewers," Keplies to the " Quarterly iv 541 Sketch of, with Portrait viii 620 Social Development, Climate and v 322 Society as an Organism ix 1 Societies, Predatory and Industrial ix 718 Sociology, Study of, i 1, 159, 513, 641 ; ii 1, 257, 450, 564, 708 ; iii 45, 172, 340, 419, 594, 676 ; iv 30, 129 Superstitions, Genesis of vi 513 To. Grant Allen (Misc.) vii 628 Truths, Mental Evolution and "Necessary v 357 Women and Children, Status of xi 433 Spencer's Decline in Power, Conway's Assertion of (Ed. Tab.) xi 241 Facts (Cor.) xviii 263 Proposed Visit to America (Ed. Tab.) xix 706 Reply to Gladstone (Cor.) iv 492 Spencer, T. D. Death, Phenomena of xix 394 Spence's Metal (Misc.) xvii 282 Spider, A Ballooning (Misc.) vi 635 A Fishing (Misc.) x 762 A Magnetized (Misc.) xiii 126 Architecture (Misc.) xiv 246 Sound-producing (Misc.) ix 383 The Triangle. B. G. Wilder vi 641 Spiders i 674 Effect of a Tuning-Fork on (Misc.) xviii 718 Venomous, in New Zealand (Misc.) ii 758 Spider's Engineering, A (Misc.) ii 635 Spider's Engineering, A. Burt G. Wilder (Cor.) iii 112 Spiders' Mode of Spinning (Misc.) xii 766 Spies, Concerning Honor to (Ed. Table) xvi 122 Spinoza. Ernest Renan xi 216 Spiritualism. II. Kiddle (Cor.) xv 408 again (Ed. Tab.) xv 700 as a Scientific Question. W. Wundt xv 577 Carpenter on (Ed. Tab.) xi 750 Mesmerism and. W. B. Carpenter xi, 12, 161 Middle-Age xvi 354 Spiritual Phenomenon, A, accounted for. J. Clough (Cor.) xv 699 Sponge, A Fresh-Water (Misc.) vi 758 -Fisheries (Misc.) v 505 Sponges (Misc.) iii 524 INDEX OF VOLUMES I TO XX. 113 VOL. TAGE Sponges, Propngating, by Cuttings (Misc.) xx 141 Spontaneous Generation ii 83 Generation (Misc.) x 759 Generation. H. O. Bastian v 695 ; vi 185 Generation. John Tyndall viii 686 ; x 641 ; xii 476, 591 Generation, Air-Germs and. P. Schiitzenberger ix 91 Generation Controversy (Misc.) xi 381 Generation Controversy. W. H. Dallinger ix 448 Generation, Roberts on (Misc.) ix 638 Generation, Tyndall and Roberts on (Misc.) x 757 Spottiswoode, William. Sketch of, with Portrait xiv 105 Sunlight, Sea, and Sky ii 50 Springer, R. Sounds of Nature, Mysterious xvii 772 Springs and Wells, Overflowing of. J. T. Trowbridge (Cor.) xvi 266 and Wells, Why do, overflow ? N. W. Green xvi 71 and Wells, Why do, overflow ? J. J. Skinner xvi 397 Spouting. G. H. Colton (Cor.) xix 554 Squirrel, Blood-sucking (Misc.) iii 399 ; xiv 838 -Pest (Misc.) ii 382 Squirrels, Varieties of Colors in (Misc.) xvii 862 Stained-Glass Windows (Misc.) xvi 141 Stallo, J. B. Notice of Articles on Primary Concepts, etc. (Ed. Tab.) iii 771 Primary Concepts of Modern Physics iii 705 ; iv 92, 219, 349 Stallo's Book, Announcement of (Ed. Tab.) xx 409 Stammering (Misc.) xviii 711 and its Causes (Misc.) xvi 863 of the Vocal Cords (Misc.) xvii 141 Stanley, Dean. Lyell, Discourse on the Death of vii 90 Stanley's, Dean, Sermon on Lyell (Ed. Tab.) vii 113 Stanley's Expedition (Misc.) viii 246 Trip down the Congo (Misc.) xii 635 Star, New, in Constellation of the Swan. A. Guillemin xi 59 or Star-Mist. R. A. Proctor xii 148 Stark, A. B. Education, Place of English in Higher xiv 81 Stars, Binary (Misc.) i 759 Distances of the. C. Flammarion v 423 Drifting of the. R. A. Proctor ii 224 Fixed. H. Farquhar xv 503 Immensity of the (Misc.) xvi 140 Motions of the i 541 Planetary Rings and New. D. Vaughan xiv 466 Shooting- (Misc.) ix 637 Variable (Misc.) xv 427 State, The Family and the (Ed. Tab.) xi 370 Stature, Human (Misc.) xii 508 Steam, Apotheosis of. J. S. Hittell ix 430 -Boilers, Deposits in (Misc.) v 124 Economizing the Heat of Waste (Misc.) vi 763 Economy in the Use of (Misc.) x 382 -Engine, A New Type of (Misc.) xii 115 8 n4 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Steam-Engine, Growth of the. Thurston, R. H. I. The Steam-Engine as a Simple Machine xii 15 II. The Steam-Engine as a Train of Mechanism xii 129 III. Non- Condensing Engine and its Application in the Loco- motive xii 257 IV. and V. Steam Navigation xii 446, 528 VI. Steam-Engine of the Future xiii 64 -Engine, Growth of. Thurston's Papers on (Ed. Tab.) xii 110 -Engine, Improvement of the (Misc.) ix 254 -Navigation, Dr. Lardner and Transatlantic. A. "W. Erwin (Cor.), xiv 673 -Navigation, Dr. Lardner and Transatlantic. J. Burns (Cor.) xiv 529 Successor of (Misc.) vii 123 Steamers, Steering of Ocean- (Misc.) xiv 545 Steamships, Ocean- (Misc.) iv 766 Steel, Iron and, Testing Strength of (Misc.) vii 377 Iron and, United States Board for testing (Misc.) viii 246 Progress in Manufacture of. A. K. Huntington xix 808 Strength of Hard and Soft (Misc.) xv 287 Stein, W. Light of Flames, Cause of. vii 696 Sterne, Cams. Gems, Artificial xiii 539 Stereoscope, Hints on the. F. C. Hill v 311 New Form of (Misc.) xiv 120 Stevenson, S. II. Biology for Young Beginners vi 340, 574 Stevens, W. Le C. Colleges, Self-Government in (Cor.) xix 697 Stewart, Balfour. Meteorology of the Sun and Earth viii 75 Sketch of, with Portrait xi 359 St. Gothard Tunnel, Compressed-Air Locomotive in. C. M. Gariel x 473 Stimpson, Dr. William, Death of (Misc.) i 502 Stimson, L. A. Bacteria and their Effects vi 399 Stimulation, The Question of (Ed. Tab.) i 239 Stimulants among Savages (Misc.) xii 117 St. Louis Academy of Science (Misc.) viii 249 Stock-Feeding, Economy in (Misc.) xi 883 Stockhardt, J. A. Sketch of, by W. O. Atwater, with Portrait xix 261 Stockwell, G. A. Cardiff Giant, and other Frauds xiii 197 Stoddard, J. L. Nebula, To the Ring- (Poem) xii 90 Stokes, G. G. Sketch of, with Portrait vii 742 Stone Age, Arts in the ii 343 Age, Images of the American (Misc.) xx 286 Age in Italy — Correction of Mommsen. J. S. Patterson (Cor.) iii 111 Age in Spain, Fortress of the Polished- (Misc.) xix 718 Building-, and Fire (Misc.) ii 039 carved by Mound-Builders (Misc.) ix 510 W. II. Science Teaching, Progress of Higher xix 676 Stonehenge ? Who Erected. G. II. Knight (Cor.) ix 751 Stoney, G. J. Meteors, The November xv 445 Storm, Birth, Life, and Death of a. R. II. Scott xv 684 Storms, American, in Europe (Misc.) xviii 862 Blasius's Theory of. V. L Conrad, ix 294 Law of, developed. T. B. Maury ii 3S5 Movement of (Misc.) v 639 INDEX OF VOLUMES I TO XX. 115 VOL. PAGE Storms of the United States, Professor Loomis on the (Misc.) vii 633 Stoves, Cast- and Wrought-Iron (Misc.) v 509 Ventilating (Ed. Tab.) xvi 124 Strachey, K. Geography and Evolution viii 192 Strain, Effects of, on the Magnetism of Soft Iron (Misc.) ix 124 Straw as Domestic Fuel (Misc.) xiii 761 Streams, Subterranean, in South Carolina. R. Wilson ix 197 Street-Sprinkling, Improvements in (Misc.) iv 124 Strike, Great Railroad-, of 1877. G. II. Knight (Cor.) xii 107 Struggle for Existence. C. Morris xx 609 for Existence, The (Misc.) vi 376, x 382 Struve, 0. W. Sketch of, by S. Newcomb, with Portrait xvii 263 Study, Intemperance in. D. II. Tuke xvi 645 Scientific Courses of. F. W. Clarke xiii 187 Stupidity in Schools, Artificial Production of i 129 Style. T. H. Wright xii 340 Subterranean Streams in South Carolina. R. Wilson ix 197 Sudan, Resources and Industries of (Misc.) xi 126 Suez Canal, Movement of Water in the (Misc.) xiv 550 Present Condition of the (Misc.) ix 508 Suffrage, Female. Gold win Smith v 427 Professor Cairnes on Woman (Ed. Tab.) vi 112 Woman, as affecting the Family. J. E. Cairnes vi 87 Sugar-Manufacture, New Process of (Misc.) xii 759 Suicide. W. W. Lord (Cor.) xvii 120 A Consideration of. J. H. Hopkins xvi 798 Catholicism, Protestantism, and. Dr. Morselli xx 220 in Large Cities. A. McL. Hamilton viii 88 in Prussia, Statistics of (Misc.) vii 381 Relation of Age and Marriage to (Misc.) xviii 282 Statistics of (Misc.) xviii 860 Sully, James. Form, The Pleasure of Visual xvi 780 ; xvii 77 Sulphide of Carbon as an Insecticide (Misc.) ix 767 Sulphur Formations in the Soil of Paris (Misc.) xix 574 Sulphurous Acid (Misc.) x 762 Disinfecting Powers of (Misc.) xx 429 Sun, Atmosphere of the (Misc.) i 251 as a Borer of Mountains (Misc.) ii 380 Chromosphere and Solar Prominences. C. A. Young iv 385 Constitution of the (Misc.) xv 855 Distance and Dimensions of the. C. A. Young x 402 Distribution of Temperature on the (Misc.) vii 763 Eclipse of (Ed. Tab.) vi 744 Recent Eclipse of. R. A. Proctor i 17 Sundberg, J. Dog-Story, A Pretty Big (Cor.) xi 488 Sun-dew (Misc.) iv 765 Sunflower, Economic Value of the (Misc.) vii 504 Sunlight, Action of, on Glass. E. S. Drone v 67 Sun-Spot Periods. George W. Chapman (Cor.) xi 488 Sun-Spots. By the Editor i 144 and Rainfall (Misc.) xvi 861 ii6 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Sun-Spots and their Effects (Ed. Tab.) xii 365 Photosphere and. S. P. Langley v 532 Sun's Envelope, The (Misc.) iv 126 Heat. 0. A. Young xviii 1 1 Long Streamers xiv 659 Pays, Distribution of Luminous Power in the (Misc.) xvi 137 Work, The vii 348 Sunstroke. Sir Joseph Fayrer xix 171 Sun-Worship among the Moquis (Misc.) xiii 378 Supernatural, Fallacies of Testimony respecting the. W. B. Carpenter, viii 570 Propositions for and against the. J. McCosh ix 21 Superstitions, Early, of Medicine. W. B. Cheadle i 95 Genesis of. Herbert Spencer vi 513 Superstitious Beliefs, Survival of (Misc.) xv 425 Supplements, Popular Science Monthly (Ed. Tab.) xi 238 Surface Features of North America, Distribution of (Misc.) x 247 Surgery, South-Sea (Misc.) v 509 Surgical Operation, A Unique (Misc.) xiv 548 Survey of Mars (Misc.) vii 248 Surveys, Reorganization of the Government (Misc.) xiv 543 State Geological. A. P. Leeds iii 226 Topographical, and Health (Misc.) xii 253 Swallows, Bank-. E. Ingersoll vii 315 Swift's Disease, Dean. Dr. Bucknill xx 806 Swindling, A Case of (Ed. Tab.) x 235 T Tails, The Use of Bushy (Misc.) viii 125 Taine, II. Language, Development of, in a Child ix 129 Tanning Process, New (Misc.) ix 118 Tarantism. Disease due to Bite of Tarantula (Misc.) iv 766 Taste, Experiments on the Sense of (Misc.) vii 634 -Perceptions (Misc.) xii 250 Tattooing, Curious Case of (Misc.) i 249 Taylor, C. F. Bodily Conditions and Mental States xv 40 G. II. Pain, Control of, by Mechanical Vibrations xix 554 Tea and Coffee, Physiological Effects of (Misc.) xvii 853 Adulterations (Misc.) vi 123 Chemistry of Coffee and. A. B. Prescott xx 359 Drinking, Effects of Excessive (Misc.) xvi 862 Production in Bengal (Misc.) v 765 Proportion of Theine in Different Kinds of (Misc.) xii 760 Teaching, Advantages of Oral (Misc.) xiv 690 An Experience in Science. S. M. Ward xx 242 Progress of Higher Science. W. II. Stone xix 676 Science in Relation to (Ed. Tab.) xiii 621 Teachings of a Day. (Poem.) L. S. Bevington xii 327 Teasel, Sensitiveness of the Leaves of the Common (Misc.) xii 637 Teas, Pure (Misc.) xiv 247 Technical Education. T. II. Huxley xii 570 Teeth, Civilization and (Misc.) xiv 689 INDEX OF VOLUMES I TO XX. 117 VOL. PAGE Telegraph and Postal Service, Union of the. A. B. Huet xix 400 Animals and the (Misc.) xx 574 Operators and Consumption (Misc.) xv 716 Operators, Education of (Misc.) vii 125 Post and, and International Eelations. 0. M. Dunbar xix 101 Talking by (Misc.) x 507 The Field. A. H. Atteridge v 303 Telegraphs, Electric. A. P. Deschanel iii 401 Telegraphy, Government (Misc.) ii 631 Recent Advances in. E. Riordan ix 71 Telelogue, The (Misc.) xx 286 Teleological Ideas, How, are acquired (Misc.) xiii 760 Telephone anticipated (Misc) xii 116 Some Teachings of the (Ed. Tab.) xii 625 The. George M. Shaw xii 559 Telephonic Receiver, Edison's Electro-Chemical (Misc.) xv 854 Telescope, Descartes on the Invention of the (Misc.) xv 430 Most Powerful, in Existence. E. Neison xvi 337 The Great Vienna (Misc.) xix 712 Telescopes, Size of the Principal, in the World x 574 Temperaments. Ely Van De Warker xii 306 Temperance Reform, Method of. " Coffee-Houses vs. Rum-Shops" (Ed. Tab.) xiv 108 Temperature and Vegetation in Different Latitudes (Misc.) viii 506 Distribution of, on the Solar Disk (Misc.) vii 763 in Disease (Misc.) ii 763 of the Body in Disease (Misc.) vii 247 of the Body in Health (Misc.) i 247 of the Ocean (Misc.) v 507 Relations of Death-Rate to (Misc.) i 378 Temperatures, Equatorial (Misc.) xvii 715 Ocean, in the Pacific and Atlantic (Misc.) xvii 716 Tenney, S., Death of Professor (Misc.) xi 631 Fishes, Odd Forms among , xi 525 Plant-eaters of North America , x 678 Sea-side Studies xiii 312 Tennyson and Botany. J. Hutchison iv 193 Teredo, and its Depredations. E. II. von Baumhauer xiii 400, 545 Terraces, River and Lake ii 661 Testimony, Scientific Study of Human. George M. Beard . . . xiii 53, 173, 328 Sources of Error of Human. G. M. Beard xiv 611, 751 Textile Plants of the World xvi 831 Theine, Proportion of, in Different Kinds of Tea (Misc.) xii 760 Theology and Evolution (Ed. Tab.) v 114 and Science (Cor.) xvi 693 Sociology and, at Yale College (Ed. Tab.) xvii 265 Therm o-Diffusion (Misc.) viii 248 Thermodynamics, Rumford's Discoveries in (Misc.) iv 758 Thermometer, A New Deep- Sea (Misc.) vii 379 Thermometers, Examination of, at Yale Observatory. L. Waldo xviii 367 Variations in the Fixed Points of (Misc.) xviii 286 n8 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Thermoscope, The Clinical (Misc.) viii 123 Thibet, Eastern (Misc.) i 379 Things, The Differences of. J. "W. Saxon xii 53 Thistle, Extermination of the (Misc.) vi 766 Thistle-Bird, Nest and Eggs of. 0. 0. Abbott (Cor.) vi 743 Thompson, Benjamin (Count Rumford). Sketch of, with Portrait ix 231 D. G. Evolution, Amherst College and (Cor.) xvii 120, 405 E. H. Atlantis not a Myth xv 759 Sir H. Dead, Disposal of. iv 592 Sir H. Food and Feeding xv 377, 514, 620 S. P. Education as a Hindrance to Manual Occupations xviii 202 S. P. Education, Methods in Industrial xviii 202 S. P. Motion, Optical Illusion of xviii 519 Thomson, Sir W. Energy of Nature, The Available xx 87 Sketch of, with Portrait x 357 Thoroughbreds, Reversion of (Misc.) vii 634 Thought, Aims and Instruments of Scientific. Clifford ii 93, 174 Time required for. T. F. Brownell xi 564 Threadworm of the Dog (Misc.) xvii 860 Thudichum, J. L. AV. Knowledge, Character of Modern viii 724 J. L. W. Liebig, Character and Work of ix 49 ThunderSho wers. J. W. Phelps vii 340 Thunderstorms, Dry (Misc.) ; . . . ix 765 Periodicity of (Misc.) vii 629 Phenomena of (Misc.) xviii 572 Thurston, R. H. Steam-Engine, The Growth of the, xii 15, 129, 257, 446, 528; xiii 64 Thymol, Antiseptic Properties of (Misc.) ix 381 Tichborne Case, The Lesson of the (Ed. Tab.) v 108 Tidal Influence on Vegetable and Animal Life (Misc.) vi 125 Tides, The. H. S. Carhart (Cor.) xi 616 The. A. B. Lyons (Cor.) xi 748 The. R. W. McFarland (Cor.) xii 105, 491 The. Elias Schneider xi 271 ; xii 226 Timber, Dry-Rot in xv 525 Rapid Decay of (Misc.) xiii 639 Strength of. J. Anderson ii 582 Time, A Glimpse through the Corridors of. R. S. Ball xx 479 A New Measure of Geologic (Misc.) si 509 " Croll's " Climate and. "W. J. McGee xvi 810 Distribution of Standard, in the United States. E. S. Holden xi 174 -Keeping in Paris. E. A. Engler xx 304 Tin, Disintegration of (Misc.) ii 382 in Australia and other Countries (Misc.) xix 425 "Where the Ancients got their (Misc.) xi 383 Tires, Setting, with Hot "Water (Misc.) xiii 122 Tissandier, Gaston. Alcohol, Natural Production of xix 238 Atmospheric Dust xvii 344 Gases, Liquefaction of the xii 016 ; xiii 78 Toad, Intelligence of the (Misc.) iv 126 Toad-stool Eating. J. A. Palmer, Jr xi 93 INDEX OF VOLUMES I TO XX. 119 VOL. PAGE Toad-stools and their Kindred. E. A. Youinans vii 129 Tobacco, Effects of, on the Teeth (Misc.) xvi 137 Physiological Effects of. F. G. Fairfield vi 76 Physiological Position of. W. E. A. Axon ii 167 Smoking, Parkes on (Misc.) xvi 718 Todas, The (Misc.) vi 123 Tomato-Plant as a Protection against Insects (Misc.) x 250 Tools, Concerning Mechanical. Arthur Rigg x 173 Torpedo, Electrical Phenomena of the (Misc.) xi 382 Invention of the (Misc xii 507 Transport, A (Misc.) xiv 118 Torrey, John. Sketch of, with Portrait iii 632 Tortoise, American Hairy. J. F. Battaille (Cor.) xiv 530 Food of the Water- (Misc.) xi 381 Food of the Water-. C. Aldrich (Cor.) xi 618 Hairy Water- (Misc.) xiv 245 Touch, Structure of the Organs of (Misc.) xix 570 Tracy, R. S. Drowning, Pain in xiii 93 Fever, Yellow xiii 714 Fever, Yellow (Cor.) xiv 388 Hanging, Pain in xiii 349 Nuisances, Problem of Municipal xviii 585 Trade, First Stagnation of. F. A. Nitchy (Cor.) xii 106 Trades, Unhealthy (Misc.) ix 634 Training, Effects of (Misc.) i 252 Transcontinental Explorations, Early. J. Ball (Cor.) ix 494 Transformations, New Views of Animal. E. Perrier xvi 625 Transfusion of Blood (Misc.) ii 124 G. Lemattre ii 679 Successful Case of the (Misc.) x 761 W. Woodbridge (Cor.) iii 509 Transit of Venus (Misc.) vi 509 (1874). S. P. Langley vi 214 Preparations for observing (Misc.) ii 252 The Approaching (1882) xx 857 Transmutation of Species (Misc.) vi 253 Tree-Growth, Seasons and (Misc.) xii 382 Tree- Planting in Towns (Misc.) vi 761 Trees, Age of, in Relation to Time of Leafing (Misc.) x 121 and Health (Misc.) xii 758 and Lightning (Misc.) xix 277 Distribution of (Misc.) v 126 Elongation of the Trunks of (Misc.) vi 511 Fossilized Standing (Misc.) ... xx 429 Longevity of. Elias Lewis, Jr iii 321 Maturity of Timber (Misc.) viii 503 Trenton Gravels, Age of the (Misc.) xviii 567 Tribune Building. Ripley^s Address on laying the Corner-Stone (Ed. Tab.) iv 625 Trichinosis on a British School-Ship (Misc.) xviii 574 Trichinous Pork (Misc.) viii 759 120 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Troglodytes, Modern. F. L. Oswald xii 37 The, or Cave-Dwellers of France. P. Broca ii 699 Trout, A Bird-eating (Misc.) xiii 124 and a Water-Snake, Fight between. A. W. Chase (Cor.) x 234 -Culture (Misc.) viii 251 for Artesian Wells (Misc.) iv 759 Voracity of the (Misc.) xi 254 Trowbridge, C. A. Copper-Mines, Isle Royale xx 122 J. Counting by the Aid of the Fingers xii 430 J. Electric Light for Steamships v 720 J. Great Fires and Rain-Storms ii 206 J. Immortality x 715 J. Physics in the Secondary Schools xv 159 J. Science from the Pulpit vi 734 J. Signal Service, Extension of the xx 507 J. T. Springs and Wells, Overflowing of (Cor.) xvi 266 Truth, Relativity of (Ed. Tab.) vii 488 Truths, Mental Evolution and Necessary. H. Spencer v 357 Tuck well, W. Science-Teaching in English Schools viii 281 Tuke, D. H. Hermit of Red-Coat's Green (original of Dickens's " Mokes "). vi 301 How the Feelings affect the Hair ii 158 Insanity, Modern Life and xii 432 Study, Intemperance in xvi 645 Turkey, Domestication of the Wild- (Misc.) xi 635 Turkeys, Trapping Wild- (Misc.) viii 253 Turquoises (Misc.) xviii 712 Tunnel-Excavations, Heat in (Misc.) xviii 713 Hawkshaw on the Channel (Misc.) viii 508 St. Gothard xvii 530 Twins as illustrating Relative Powers of Nature and Nurture. Francis Galton viii 345 Savage Opinion of (Misc.) vii 632 Tylor, E. B. Anthropology, Recent xvi 145 Backgammon among the Aztecs xiv 491 Games, History of xv 225 Mankind, The Races of six 289 Ordeals and Oaths ix 307 Plow and Wheel-Carriage, Origin of the xviii 448 Quetelet on the Science of Man i 45 Tyndall and Froude. Discussion of Science and History (Ed. Tab.) ii 373 and his Reviewers. Belfast Address (Ed. Tab.) vi 501 John. Action of Dark Radiations i 202 Belfast Address before the British Association v 652 Colors, Goethe's Theory of xvii 215, 312 Controversy between, and Henry. The Nation's Attach (Ed. Tab.) viii 489 on Sound. Reply to the Nation viii 477 Crystalline and Molecular Forces vi 257 Discovery of Mount. W. H. Brewer ii 739 Electricity, Lessons in viii 607 ; ix 30, 158, 331 Electric Light, The xiv 553 INDEX OF VOLUMES I TO XX. 121 VOL. PAGE Tyndall before the English Copyright Commission xiv 39 Expected Visit of, to this Country (Ed. Tab.) i 751 Farewell Banquet to (Ed. Tab.) ii 625 Fermentation and Disease x 129 Fog-Signaling, Atmosphere in Eelation to vi 541, 685 Fog-Signals, Kecent Experiments on. , xiii 275 Glaciers and their Investigators iii 746 Heat, Action of Radiant, on Gaseous Matter xix 33 Lectures in America ii 212 Letter from, concerning his Lectures in America (Cor.) iii 241 Letter on the Feeling between England and America (Misc.) iv 631 Martineau and Materialism viii 129 Martineau and (Ed. Tab.) viii 746 Niagara, Some Observations on iii 210 Rendu and his Editors v 447 Sabbath, The xviii 246, 310 Science and Religion ii 79 Sketch of, with Portrait ii 103 Sound and Radiant Heat xx 650 Sound, The Motions of vii 410 Spontaneous Generation viii 686 ; x 641 ; xii 476, 591 Trust Fund (Ed. Tab.) xix 116 Virchow and Evolution xiv 266 Tyndall's Belfast Address (Ed. Tab.) v 746 ; vi 110, 366 Deed of Trust iii 100 Lectures in New York (Ed. Tab.) ii 499 Prayer-Test (Ed. Tab.) vii 367 Relation to Popular Science. H. Helmholtz v 734 Reply to Critics of the Belfast Address vi 422 Type- Writer, A New (Misc.) ii 763 Typhoid Fever, Etiology of (Misc.) iv 764 How, is conveyed. T. J. Maclagan xvi 460 Poison. E. Van De Warker xiv 514 Well- Water and (Misc.) xv 423 Typhoon, A Japanese. T. C. Mendenhall xviii 356 Typhus, Causes of (Misc.) iii 124 u Lie, Otto. Food and the Development of Man v 591 Unconscious Action of the Brain. W. B. Carpenter i 544 Hartmann's Philosophy of the. Leon Dumont ii 152, 311 "Undergrowth and Forest-Trees (Misc.) xix 426 Ungulates from Mexico, New Fossil (Misc.) vii 638 Unionidas, Professor Morse on the North American (Misc.) v 762 Unity of the Human Species. A. De Quatrefages i 61 Universities : Actual and Ideal. T. H. Huxley v 46 University, A National. C. W. Eliot iii 689 Our Great American viii 551 Uniformity System, Is the, an American Idea ? (Misc.) xv 424 Useful Things. E. About ii 491 Utah, Health of Children in (Misc.) viii 381 122 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Utah Mound, Contents of a (Misc.) xii 123 Social Experiments in. J. H. Beadle ix 479 V Vaccination in New York. R. O. Mason xvi 330 Protection against the Carbuncle of Cattle (Misc.) xx 142 Vaile, E. O. Arithmetic, Early Methods in xvi 204 Eeading as an Intellectual Process viii 212 Valley, A Musical (Misc.) xviii 429 Remarkable South American (Misc.) vi 251 Vanderbilt University again (Ed. Tab.) xiv 237 Religion and Science at (Ed. Tab.) xiii 492 Van De Warker, Ely. Crime, Relations of Women to viii 1, 334, 727 Sexual Cerebration vii 287 Temperaments xii 306 Typhoid-Fever Poison xiv 514 Women — Professions and Skilled Labor vi 454 Woman, The Genesis of. v 269 Vanilla-Plant, The. J. Poisson xv 642 Variation, Accidental. E. R. Leland (Cor.) ix 750 Varieties, Entertaining xx 398, 548, 688, 830 Natural (Misc.) iv 382 Varigny, Henry de. Phrenology, The New xviii 599 Vaughan, D. Astronomical History of Worlds xiii 571 Planetary Rings and New Stars xiv 466 The Late (Ed. Tab.) xv 127 Works of Professor (Ed. Tab.) xvi 125 Worlds, Origin of xv 1 Sketch of, with Portrait xv 556 Vaux, Calvert. Marcus Aurelius Antoninus xi 461 Vegetable Caprice (Misc.) ii 383 Growth, Atmospheric Pressure and (Misc.) ii 760 Growth, Rapidity of (Misc.) iv 510 Kingdoms, Animal and. T. H. Huxley viii 641 Physiology, Curious Phenomenon in (Misc.) ii 636 Structures, Permanence of (Misc.) xx 861 Vegetables, Non-Poisonous Coloring for Preserved (Misc.) xii 638 Vegetarianism, The Economy of (Misc.) ix 118 Vegetation, Changes in the Natural, at San Francisco (Misc.) xvii 853 Electricity and (Misc.) xvi 712 Electric Light and (Misc.) xvii 283 Vengeance in Punishment (Ed. Tab.) xvi 555 Ventilation, and the Reasons for it. R. A. Smith i 356 and Wanning (Misc.) ii 126 House- vii 596 Parliamentary (Misc.) ii 252 School-room. P. J. Iliggins xix 531 Science and (Misc.) x 760 Venukoff, M. World, Unexplored Parts of the Old xix 684 Venus, Recent Observations of (Misc.) vi 760 Transit of iv 212 INDEX OF VOLUMES I TO XX. 123 VOL. PAGB Venus, Transit of (Misc.) vi 509 Transit of. S. P. Langley vi 214 Transit of. R. A. Proctor iii 355 Transit of, Preparations for observing ii 252 The Approaching Transit of (Misc.) xx 857 Venus's Fly-Trap, Electrical Phenomena of (Misc.) x 247 Verneau, R. Black Races of Oceanica xviii 744 Verney, Lady. The Shovel-Nosed Shark iv 65 Vertebrate Life in America, Introduction and Succession of. 0. C. Marsh xii 513, 672 Vessels, Raising Sunken_(Misc.) xvi 286 Some Prehistoric xix 80 Vesuvius i 227 Late Eruption of (Misc.) i 379 Threatened. Eruption of (Misc.) x 763 ; xiii 378 Viardot, L. ^Esthetic Sense in Animals iv 729 Vibration, Effect of, in retarding Rust (Misc.) vi 255 of Rocks in Patapsco Valley. F. Garretson xx 541 Vibrations produced by Various Explosives (Misc.) ii 506 Sympathetic, in Machinery. J. Lovering iii 737 Vienna Exhibition, Oriental Exhibits at iii 493 Vilain, J. Diseases of Wild Animals xvi 11 Viniculture in California (Misc.) vii 123 Vine-Slip, Only a. T. G. Appleton xviii 539 Violin ; its Construction and Perfection (Misc.) xvii 423 Viper- Poison, Experiments with (Misc.) xi 767 Virchow and Evolution. John Tyndall xiv 266 Virginia, Militancy and Industrialism in (Ed. Tab.) xx 271 Vision, Effects of Faulty, in Painting. R. Liebreich i 174 Experiments in (Misc.) xx 142 Peculiarities of (Misc.) xiii 510 Visions of Sane Persons. Francis Galton xix 519 of Sane Persons. L. C. Jones (Cor.) xx 123 Visual Images in Darkness i 734 Tests, Regulation of (Misc.) xviii 571 Vital Statistics. C. P. Russel x 697 Vivisection (Ed. Tab.) iv 750 ; xix 409 British Movement against (Ed. Tab.) x 366 Darwin's Views on (Misc.) xix 424 English Commission on (Misc.) ix 3S2 Legislation against (Misc.) x 125 M. Forster iv 672 The Value of (Misc.) v 507 ; viii 509 Vindicated (Ed. Tab.) viii 751 What, has done for Man (Misc.) xvii 711 Vogel, II. Correctness of Photographs , vi 710 Vogt, Carl. Barbarism, Lingering xviii 638 Pope and Anti-Pope xiv 320 Savants, Reminiscences of Deceased xiii 20 "Writing physiologically considered xix 620 Voice in Fishes (Misc.) xvi 574 124 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Voice in Man and Animals. Emile Blanchard ix 385, 513 Voit, Professor. Condiments, Physiological Influence of i 701 Food, Nutritive Salts of i 405 Foods, Digestibility of Vegetable and Animal i 308 Volcanic Cones, Origin and Structure of. H. J. Johnston-Lavis. . . xviii 776; six 49 Dust (Misc.) ii 123 Energy (Misc.) ii 505 Eruption, Disastrous (Misc.) ii 253 Eruption in the Sandwich Islands (Misc.) v 379 Eruptions and Earthquakes in 1879 (Misc.) xvii 713 Gases, Poisonous (Misc.) iii 780 Outbreaks in Iceland (Misc.) vii 630 Products xx 347 Volcano of Santorin xvii 534 Recent Outbreak of a Sandwich Island (Misc.) xi 125 rising from a Lake (Misc.) xvii 713 Volcanoes, Action and Distribution of, in Central Asia, The Supposed (Misc ) xx 715 New Theory of ii 203 "Voltaic Armadillo " (Misc.) vi 638 Voluntary Motion. Payton Spence xiii 444 Vortex-Rings, Studies of. A. Guebhard xx 175 Vulcan, The New Planet (Misc.) iii 396 The Planet. D. Kirkwood xiii 732 Vulture, The King- (Misc.) xv 431 w Wahl, W. II. Forces, Wasted xv 289 Forces, "Wasted (Cor.) xvi 408 "Wakefulness, A New Remedy for (Misc.) xii 121 "Waldo, L. Examination of Thermometers at Yale Observatory xviii 367 "Waldstein, C. Language and the Emotions. xiv 190 "Wallace, A. R. Evolution, Difficulties as applied to Man x 60 Natural Selection, Doctrine of iii 22 New Guinea and its Inhabitants xiv 742 ; xv 57 Sketch of, with Portrait xi 235 "Wallace's Theory of Zoological Derivation (Misc.) xiv 694 Walling, H. F. Dissipation of Energy iv 430 "Wallis, Gustave. Sketch of, with Portrait xiv 386 Walpole, S. Frank Buckland xviii 812 "Walls, Discoloration of Brick (Misc.) xiii 379 Walterhofer, Otto. Earth is weighed, Eow the xix 743 "War and Education (Ed. Tab.) v 370 and Population. Alexander Duane (Cor.) x 614 Electricity in (Misc.) xii 382 Science and (Ed. Tab.) xiv 817 Ward, J. C. Lakes, Origin of Upland xiv 810 II. A. Museum Godeffroy viii 699 L. F. Chemical Elements, Evolution of the xviii 526 L. F. Evolution, Cosmic and Organic xi 672 INDEX OF VOLUMES I TO XX. 125 VOL. PAGE Ward, L. F. Tknts, Local Distribution of ix 676 S. M. Science-Teaching, An Experience in xx 242 W. S. Sand-Blast, The viii 300 Warming of Houses. J. P. Seddon ii 472 Warner, F. Muscular Expression of Nervous Conditions xx 584 Warring, C. B. The Solar System and its Neighbors xvii 612 Washburn, E. A. Scientific Culture and Religious Faith vii 62 Wasp-Nests, Clay (Misc.) iv 637 Waste, A City's (Misc.) i 761 Watches, A Test for (Misc.) xvii 283 Water, Absorption of, in growing Grain (Misc.) vii 380 A Glass of, The Wonders of. F. Mohr. '. i 655 Bad Odors in Reservoired Drinking-. S. A. Lattimore xi 469 Closet and Pail Systems (Misc.) x 123 -Courses, Subterranean (Misc.) xiii 124 for Domestic Use (Misc.) xiii 759 Germs of Disease in (Misc.) xvii 570 -Hammer, The (Cor.) ix 362 Impurities of (Misc.) i 248 Impure, Tests of (Misc.) i 250 Organic Impurities of (Misc.) vii 125 Purification of River-, by Organic Agents (Misc.) xviii 709 Storage and Purification of (Misc.) xiv 547 -Supply of Islands. F. C. Hill vi 440 -Supply of Rivers. George Chahoon xiii 288 -Tanks. Construction of (Misc.) x 124 turned to Blood. N. Joly iv 202 -Waves and Sound-Waves. J. N. Lockyer xiii 166 Waterfalls sensitive to Sound (Misc.) ii 383 Watering- Places, Sanitary Condition of (Misc.) viii 508 Sanitary Perils at (Misc.) xvii 426 Streets (Misc.) iv 124 Watson, J. C. Sketch of, by Alexander Winchell, with Portrait xix 693 Wave-Action in Nature iii 1 Waves in Liquids, Propagation of (Misc.) viii 253 Weakness of Great Men (Misc.) vii 250 Weapons, Ancient (Misc.) x 254 Weasel, The Wicked xii 697 Weather and the Sun. R. A. Proctor . . iii 479 Diseases and the (Misc.) xix 275 Observations, Value of Scientific (Misc.) xii 764 Prophecies ii 149 Reports, International (Misc.) vii 506 -Service, International. T. B. Maury xvi 289 The Moon's Influence on the. M. A. F. Prestal x 56 Weddar, The, of Ceylon (Misc.) ix 120 Wedderburn, D. Mormonism from a Mormon Point of View x 154 Weeden, W. B. Association in its Relation to Labor viii 586 Wehle, Theodore. Insurance, Modern Basis of Life xix 625 Insurance, Origin and History of Life xix 482 Insurance, Practical Business of Life xix 732 9 126 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Weights and Measures, Our Current xii 375 Welcome, H. S. Cinchona-Forests of South America xvii 507 Welding of Iron, Rationale of the (Misc.) viii 253 Well, An Ancient, in Illinois (Misc.) iv 252 A Natural (Misc.) xv 718 Wells and Springs, Why do, overflow ? N. W. Green xvi 71 Why do, overflow ? J. J. Skinner xvi 397 Werdermann Electric Light (Misc.) xiv 545 Wernich, A. Destruction of Infectious Germs xvii 828 West, C. Probabilities, Logic of (Cor.) xiii 236 Westinghouse Automatic Brake (Misc.) xviii 140 Whales and their Habits (Misc.) xx 423 and their Neighbors. A. Wilson xv 237 Habits of Right and Sperm (Misc.) iii 124 Wheat, New Method of disintegrating (Misc.) ii 254 -Fungus, A New, in California (Misc.) xi 509 Wheatstone, Sir Charles. Sketch of, with Portrait viii 363 Wheelbarrows, Chinese (Misc.) viii 125 Wheeler, C. G. Science in the Argentine Republic ix 463 D. H. Natural Selection in Politics iii 230 Whewell, Dr. William. Sketch of, with Portrait vii 105 Whistle, Waste of the Locomotive- (Misc.) xiii 136 White, A New Mineral (Misc.) xiv 126 White, A. D. Education, Science, and Industry in the United States.. . . v 170 Sanitary Science and Public Instruction iv 421 Science and Public Affairs ii 736 Science, The Warfare of. viii, 385, 553 E. E. Barbarism in English Education ii 671 F. E. Matter and Mind xi 183 Sexes, Future Relations of the (Cor.) vi 614 Woman's Place in Nature vi 293 Whitney, W. D. Languages, Are, Institutions ? vii 142 Sketch of, with Portrait xv 121 Whitworth's, Sir Joseph, Bequest (Misc.) viii 760 Wilber, S. E. Mud-Minnow, Breeding Habits of the (Cor.) iv 744 Wilder, B. G. Bats and their Young vii 641 Correction of Notice of Paper on American Ganoids (Cor.) viii 111 Fox, A Baby- v 443 Gar-Pike, Habitat of the (Cor.) xi 366 Gar-Pikes, Old and Young xi 1, 186 Museum Exchange, A viii 460 Spider, The Triangle vi 641 Spider's Engineering, A (Cor.) iii 112 J. Wyman, Sketch of vi 355 Woodruff Scientific Expedition, The (Cor.) xi 749 Wild Flowers, Cultivating. S. Lockwood ii 356 Plants, Culture of (Misc.) i 376 Wiley, II. W. Glucose and Grape-Sugar xix 251 Wilkinson, W. Is Conscience primitive ? xiv 647 Will, Growth of the. Alexander Bain xv 10 Scientific Aspect of Free-. A. J. Leffingwell xvi 745 INDEX OF VOLUMES I TO XX. 127 VOL. PAGE Will, The Velocity of the. R. Eadau ii 360 Williams, W. M. Another World down here xix 43 Will-o'-the-Wisp and its Folk-Lore. T. F. T. Dyer xix 67 Willow, Curious Freak of the Curly- (Misc.) viii 760 The Weeping- (Misc.) iv 252 Wilson, A. Degeneration xix 218, 382 Natural History, Clews in xv 14 Phrenology, The Old and the New xiv 475 Whales and their Neighbors xv 237 Zoology, Some Facts and Fictions of xvii 96 H. H. The State as an Educator xviii 664 Major. Early Study of Geography vi 212 E. Subterranean Streams in South Carolina ix 197 Winchell, N. H. Copper-Mines of Isle Eoyale, Ancient xix 601 Drift-Deposits of the Northwest iii 202, 286 Windows, Stained-Glass (Misc.) xvi 141 Wine and Spirits, Effects of Freezing on iii 654 Salicylic Acid in (Misc.) xi 351 Wines as Intoxicants (Misc.) xv 142 Winslow, Cremation of Dr. C. F. (Misc.) xi 765 Forbes, Death of (Misc.) iv 760 F. Oyster-Beds, Deterioration of American xx 29, 145 Wire-Works, Utilization of the Waste of (Misc.) xii 379 Witchcraft, African Fetich-Worship and (Misc.) xvii 428 Wohler, F. Sketch of, by C. A. Joy, with Portrait xvii 539 Woman and Political Power. L. O. Pike i 82 as a Sanitary Eeformer (Misc.) xix 427 Genesis of. E. Van De Warker v 269 Higher Education of (Ed. Tab.) iv 748 Question, Science and the. M. A. Hardaker xx 577 Woman's Place in Nature. F. E. Wbite vi 293 Eights, Biology and xiv 201 Women and Children, Status of. Herbert Spencer xi 433 and the Study of Science (Misc.) xiv 119 Condition of, from Zoological Point of View. W. K. Brooks, xv 145, 347 Education as an Aid to the Health of. E. Cumings xvii 823 Hygiene in the Higber Education of. A. H. Bennett xvi 519 Industrial Occupations of iii 653 Legal Position of Married. A. G. Spencer xviii 643 — Professions and Skilled Labor. E. Van De Warker • vi 454 Eelations of, to Crime. E. Van De Warker viii 1, 334, 727 Eest for. Mary Putnam-Jacobi (Cor.) xii 492 Spencer and the. S. S. Hennel (Cor.) iv 746 Wonder, Diseased Condition of the Faculty of. Professor Gairdner. . . . xv 196 Wood-Ants, Singular Feeding Habits of (Misc.) x 634 Wood, Conversion of, into Lignite (Misc.) v 763 -Growth, Eccentricity in (Misc.) x 379 Wood, New Process for Preservation of. M. A. Hatzfeld v 228 Preservation of (Misc.) i 508 Preservation of, by Charring and Tarring (Misc.) xii 510 Preservation of, by Creosote (Misc.) siii 382 128 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Wood, T. F. Mushrooms, Edible xi 366 "Wood under Water, Preservation of (Misc.) xii 383 Woodbridge, W. Transfusion of Blood (Cor.) iii 509 Woodpecker, The Tongue of the Green (Misc.) x 113 Woodruff's Scientific Expedition. B. G. Wilder (Cor.) xi 749 Wood's Discoveries at Ephesus vii 223 Woolf, Philip. Insects, Neuter xv 470 Words, Classification of, by Ideas (Misc.) xv 714 Work, Force and (Misc.) viii 762 Mind in (Misc.) xviii 709 World, Age of the (Misc.) xv 137 Beginning and End of the. W. K. Clifford vii 268 -Creations. C. C. Merriman x 701 The Probable Age of the ix 649 Unexplored Parts of the Old. M. Venukoff xix 684 Worlds, Origin of. D. Vaughan xv 1 Worm, A Big (Misc.) xiii 508 refused by Sparrows (Misc.) vi 377 Worry. J. M. Granville xx 102 Worthington, A. M. Behavior of Drops falling on a Plate xi 544 Wotherspoon, W. W. Salt Deposit, Curious Case of (Cor.) xi 236 Wright, E. Insurance Value v 235 T. H. Style xii 340 Write, Learning to xvi 795 Writing Machine, A New (Misc.) i 374 Physiologically considered. Carl Vogt xix 620 Writings, Restoration of Faded (Misc.) viii 253 Wundt, William. Spiritualism as a Scientific Question xv 577 Wyandotte Cave, Recent Exploration of (Misc.) xiv 833 Wyeth, J. A. Snoring and how to stop it xi 704 Wylie, W. G. Relations of Hospitals to Pauperism ix 738 Wyman, Dr. Jeffries. Sketch of, by B. G. Wilder, with Portrait vi 355 Y Yale College, Sociology and Theology at (Ed. Tab.) xvii 265 Yandell, D. W. Epidemic Convulsions xx 498 Yarrow, H. C. Florida Lizards (Cor.) xii 363 Yeast. T. H. Huxley i 573 Yellow Fever and what to do about it (Ed. Tab.) xiii 747 Artificial Cold in Treatment of (Misc.) xiii 763 R. S. Tracy (Cor.) xiv 388 Yellowstone, Great Glacier of the (Misc.) xviii 568 National Park (Misc.) i 381 Park, Resurvey of (Misc.) xiv 836 Park, Silicified Forests of the (Misc.) xvii 570 A'alley, Glacial Action in the (Misc.) xix 278 Yorktown Centennial, Further Lessons of the (Ed. Tab.) xx 268 Yosemite Valley of Glacial Origin (Misc.) iv 122 Youmans, E. A. Chemical Exercises for Ordinary Schools xvii 522 E. A. Combe, Autobiography of George xv 109 E. A. Lace and Lace-Making viii 521 INDEX OF VOLUMES I TO XX. 129 VOL. PAGE Youmans, E. A. Optics, Some Simple Experiments in xi 658 E. A. Plants, Darwin on the Movements of. xviii 498 E. A. Sketch of Lucretia Caroline Herschel viii 736 ; ix 58 E. A. Toadstools and their Kindred vii 129 E. L. Fraudulent Use of his Name — A Card to the Public iii 247 E. L. Spencer and Evolution vi 20 "W. J. Corpulence i 445 W. J. Heat, Morbid Effects of iii 497 W. J. Images and Shadows iv 665 W. J. Radiations, The Chemical vii 19 TV. J. Tongueless Speech iii 627 Young, C. A. Chromosphere and Solar Prominences iv 385 C. A. Sketch of, with Portrait xix 840 C. A. Sun, Distance and Dimensions of the x 385 C. A. Sun's Heat, The xviii 11 Dr. Thomas. Sketch of, with Portrait v 360 z Zadig, The Method of. T. H. Huxley xvii 467 Zanzibar, The Climate and Meteorology of (Misc.) xvii 857 Zebu and European Cattle, Cross between the (Misc.) ii 635 Zodiacal Light (Misc.) v 380 Light. C. E. Brame xi 349 Light. C. A. Morey (Cor.) xi 617 Zoological Enigma, A. F. L. Oswald xvii 359 Garden, The Cincinnati (Misc.) vii 249 Laboratory, Chesapeake (Misc.) • xix 276 Specimens, Preservation of (Misc.) ix 254 Zoologists, What American, have done for Evolution. E. S. Morse. . . x 1, 181 Zoology, Some Facts and Fictions of. A. "Wilson xvii 96 Zmli Indians of New Mexico. F. FJett v 580 BOOK NOTICES. A Aborigines, Houses and House-Life of the American. L. H. Morgan xx 853 Abstinence, Total. B. "W. Richardson xiv 684 Academy of Arts and Sciences, Proceedings of the American viii 118 of Natural Sciences of Philadelphia, Report of. "W. S. W. Ruschen- berger x 506 of Sciences and Arts, Transactions of, of "Wisconsin ii 503 Accidents or Poisoning, What to do first in. C. W. Dallas xviii 424 Accounts, The Logic of. E. G. Folsom iv 118 Acoustics, Light, and Heat. "W. Lees xi 376 Researches in. A. M. Mayer vi 629 Adamites and Preadamites. Alexander Winchell xiii 498 Adirondacks, Camps and Tramps in the. A. J. Northrup xvii 566 i3o TEE POPULAR SCIENCE MONTELY. VOL. PAGE Adirondack Wilderness, Report on. V. Colvin in 519 Aerial Locomotion. Professor Coughtrie viii 377 Navigation. 0. B. Mansfield x 623 World, The. G. Hartwig vii 623 Esthetics, Physiological. Grant Allen xi 760 Africa, Notes of Travel in. 0. J. Andersson viii 500 The Heart of. George Schweinfurth vii 237 African Travel, Four Thousand Miles of. A. S. Southworth viii 755 Agricultural Investigations. Levi Stockbridge xvii 134 Products of the United States, 1840-1870. S. B. Ruggles v 371 Agriculture, Elementary Principles of Scientific. N. T. Lupton xviii 273 First Principles of. H. Tanner xiii 505 Eeport of the Commissioner of vi 507 ; xi 118 Air and Moisture on Shipboard. T. J. Turner > xiv 829 House, and Disease. F. Donaldson xiv 826 we breathe xiv 829 Alaska, Eeport on. H. W. Elliott viii 500 Alcohol. J. G. Dudley v 757 Alcoholic Liquors, Chemical Exhibition of. A. Prescott vi 755 Poison, Effects of. J. H. Kellogg si 118 Algse, British Marine. W. H. Grattann iv 378 Marine, of New England and Adjacent Coast. W. S. Farlow xix 709 Algebra for Schools and Colleges. S. Newcomb xx 281 Almanac, Abridgment of the Nautical xviii 850 Alphabet, The Landa, a Spanish Fabrication. P. J. Valentini xx 413 Alva Vine. H. Gordon xvii 565 Amazonas, Geology of the Lower. O. A. Derby xvi 421 America, Ancient. Baldwin i 244 American Association for the Advancement of Science, Proceedings of. Twenty-third Meeting vii 495 Chemist, The. Edited by C. F. Chandler iii 395 Engineer. A Monthly Journal viii 378 Garden, The. A Monthly Journal vii 242 State and Statesmen, The. W. G. Dix ix 375 Amphibians, Tailed. W. H. Smith xi 629 Anaesthesia and Anaasthetics, Artificial. II. M. Lyman xx 409 Analysis, Outlines of Proximate Organic. A. B. Prescott vi 629 Volumetric. Emil Fleischer xii 754 Anatomical, Papers chiefly. B. G. Wilder v 757 Anatomy, Aids to. George Brown xvii 133 Art. A. J. Howe xiv 829 Elementary. St. George Mivart iii 247 of the Milk-weed Butterfly. E. Burgess xix 418 Physiology, and Hygiene, Text-Book of. J. T. Scovell xix 858 Ancient Regime. The. II. A. Taine ix 369 Stone Implements, etc., of Great Britain. John Evans. ii 247 Andes and the Amazon. J. Orton x 625 Angola and the River Congo. J. J. Monteiro ix 374 Animal Kingdom, Development of the. G. Lewis xi 503 Life as affected hy Natural Conditions of Existence. Carl Semper. (International Scientific Series.) xviii 698 INDEX OF VOLUMES I TO XX. *3i VOL. TAGE Animal Life, Structure of. L. Agassiz v 122 Mechanism. E. J. Marey vi 246 Vegetable, and Mineral Kingdoms. N. B. Walker xv 421 Animals, Geographical Distribution of. A. B. Wallace x 504 Annual Address, Medical Department University of Pennsylvania. C. G. Comegys vii 502 Cyclopaedia for 1873 v 500 Anthracite Coal-Trade, Diagnosis of Progress of the. Messrs. Sheafer. xvii 851 Anthropological Society of Washington, Abstracts of Transactions xix 421 Anthropology. E. B. Tylor xix 557 Antiquarian, The American (Quarterly Journal). Edited by S. D. Peet. xiv 242 Antiquities of New Mexico and Arizona. W. J. Hoffman xix 564 of the Southern Indians. C. C. Jones iii 248 ; iv 119 Ants of Texas, Natural History of Agricultural. H. 0. McCook xiv 826 of the Alleghanies, Mound-Making. II. C. McCook xiii 117 Aphididse, United States, Notes on. C. V. Eiley xiv 829 Apiary, Manual of the. A. J. Cook ix 502 ; xiii 631 Archaeological Institution cf America, Papers of the. A. F. Baudelier. xx 419 Eesearches in Kentucky and Indiana. F. W. Putnam vii 627 Archaeology of Missouri, Contributions to the xviii 133 Eeport of Peabody Museum of American xii 754 Architectural Details, Modern xix 418 Archivos do Museo Nacional do Eio de Janeiro ix 762 Arctic Circle, New Lands within the. J. Payer xi 371 Ocean, Eeport of Cruise of the United States Eevenue Steamer Cor- win in the. Captain C. L. Hooper xix 419 Arid Eegions, United States, Eeport on Lands of. J. W. Powell xvii 276 Arithmetic, First Book in. D. W. Fish viii 244 Army, Annual Eeport of Chief of Engineers of United States xviii 701 Arnold, Passages from the Prose Writings of Matthew xviii Art and Archaeology, Essays on. C. T. Newton xviii 134 and Architecture, Nature and Function of. L. Eidlitz xx 705 and its Eelation to Puritanism and Money- Getting. A. E. Cooper . vi 756 Education applied to Industry. G. W. Nichols xi 761 nand-Books, Putnams'. Edited by S. M. Carter xiii 756 Magazine of xix 418 Arts, The Minor. C. G. Leland vsiii 275 Associations. Proceedings of the Georgia Teachers' v 376 Asteroids (Misc.) xviii 715 Astronomical Observations, Harvard Annals of. C. S. Peirce xiv 116 Observations of Harvard, Annals of. E. C. Pickering xviii 134 Society, Members of the (1874) vii 374 Astronomy. S. Newcomb and E. S. Ilolden xvi 702 Descriptive. George F. Chambers xi 627 —Gould's Work in v 758 Myths and Marvels of. E. A. Proctor xiii 116 Practical, and Observatories of Europe and America, 1600-Present. Andre and Eayet vi 117 Young Folks'. J. D. Champlin, Jr xx 418 Atheism, Darwinism, and Theism. C. Braden x 623 Atlas, Statistical, of the United States. F. A. Walker v 756 ; vi 120 i32 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Atmosphere, Composition of the Ground, etc. W. R. Nichols vii 754 The. 0. Flammarion iv 245 Atomic Theory, The. C. A. Wurtz xviii 418 B Bacteria. A. Magnin xix 706 L. A. Stimson viii 243 Baldwin Locomotive-Works, Catalogue of the xix 122 Barometer, The Aneroid xiii 116 Bass, Book of the Black. J. A. Henshall xx 564 Beams, Strength of, under Transverse Loads. W. Allan viii 499 Beautiful and the Sublime. J. S. Kedney xviii 566 Bee-Culture, Annals of, 1872. D. L. Adair ii 755 -Keeper's Magazine. H. A. King & Company ii 249 Beer and its Manufacture. Hans von Der Planitz xvi 854 Bees, The Blessed. John Allen xiv 400 Beet, Sugar-, Beport on Culture of, and Manufacture of Sugar from. W. McMurtrie xviii 849 Bench and Bar of Saratoga County. E. R. Mann x 755 Review v 758 Berkeley Quarterly, The , xvi 855 Berliner Astronomisches Jahrhuch fur 1877. W. Foerster und F. Tietjen vii 499 Bible and Science. T. L. Brunton xx 129 The. J. Weiss ix 375 Fabulous Gods denounced in the. W. A. Ilauser xvii 703 of Humanity. Jules Michelet xii 114 of To-day. J. W. Chadwick xiv 396 Science of the. M. Wooley xvi 131 Short History of the. B. C. Keeler xx 417 What is the ? J. T. Sunderland xiv 826 Biology, Elementary. T. H. Huxley x 626 Introduction to. T. C. MacGinley vi 120 Birds, Geographical Variation in North American. J. A. Allen v 758 Key to North American. Elliott Coues ii 751 Land and Game, of New England. II. D. Minot x 624 of Colorado Valley. Elliott Coues xv 565 of Connecticut. C. H. Merriam xii 755 of Eastern Pennsylvania. Thomas Gentry ix 247 of the Northwest. Elliott Coues „ vii 242 Reptiles, etc., of the United States, Popular Key to. D. S. Jordan, v 251 Studies of the Food of xix 120 Black Hills, Geology and Resources of the. II. Newton and W. P. Jen- ney xx 854 Mineral Wealth, Climate, etc., of the. W. P. Jenney xi 503 Blowpipe Analysis. J. Landauer xvi 855 Boiler Explosions. Zerah Colburn iii 777 Bolometer, The. S. P. Lan^ley xix 561 Boston Society of Natural History, Anniversary Memoirs of the xix 856 Proceedings of the xii 373 Botanical Charts, Henslow's. Eliza A. Toumans iv 628 Collector's Hand-Book. W. W. Bailey xix 710 INDEX OF VOLUMES I TO XX. 133 VOL. TAGE Botanical Text-Book. Asa Gray xvi 277 Botany. W. R. McNab xx 414 Elementary Text-Book of. K. Prantl xviii 132 First Book of. E. A. Youmans i 120 for Beginners. M. T. Masters i 370 Practical. August Koehler x 246 Second Book of. Eliza A. Youmans iii 648 Text-Book of. Julius Sachs vii 371 Brain and its Functions, The. J. Luys. (International Scientific Series.), xx 847 and Mind. H. S. Drayton xvii 564 as an Organ of Mind. H. 0. Bastian xvii 846 Building of a. E. H. Clarke vi 115 Functions of the. D. Ferrier x 752 Breathing, Rapid, as a Pain-Obtunder. W. G. A. Bonwill xix 564 Breeding, Principles of. W. H. Brewer xiv 829 Bridges, Properties of Continuous. C. Bender xi 118 Bright's Disease, How Persons with, ought to live. J. F. Edwards .... xx 134 British Association, The, Report of the Forty-fourth Meeting viii 498 Thought and Thinkers. George S. Morris xviii 703 Buckle, Life and Writings of H. T. A. H. Huth xvii 412 Building Construction x 375 Notes on ix 249 Timber and Brick. R. S. Burn v 756 Bulletin of Buffalo Society of Natural Sciences iii 777 Bunsen, Life and Letters of Baroness. A. J. C. Hare xv 275 Bussy Institute, Bulletin of Part V ix 504 Butterflies. S. II. Scudder xx 133 c Caliban : The Missing Link. Daniel Wilson iii 395 California, Oregon, etc., Round Trip through. John Codman xv 851 Notes. C. B. Turrill x 246 Californian, The, Monthly xvi 851 Camp out, How to. John M. Gould xi 247 Carlyle Anthology, The. E. Barrett x 753 Catarrh, Naso-Pharyngeal. M. F. Coomes xx 131 Catechism of Common Things, Child's. J. D. Champlin, Jr xvii 702 Catholic Quarterly Review, American ix 505 Cave-Hunting. W. B. Dawkins vi 249 Cellulose, Vegetable and Animal. Thomas Taylor xi 375 Cerebro Spinal Meningitis, Epidemic. M. Clymer ii 678 Ceremonial Institutions. Herbert Spencer xvi 698 Chacota Bay, Peru, Collection from Ancient Cemetery of. J. H. Blake xiv 540 Challenger, Notes by a Naturalist on the. H. N. Moseley xv 418 Chances, The Logic of. J. Venn ix 628 Change, as a Mental Restorative. J. Mortimer-Granville xix 122 Chemia Coartata. A. II. Kollmeyer s 375 Chemical Analysis, Qualitative. S. H. Douglass and A. B. Prescott xi 246; xviii 135 Qualitative. C. W. Eliot and F. H. Storer ii 248 and Geological Essays. T. S. Hunt vi 372 ; xiii 247 i34 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Chemical Exercises in Qualitative Analysis. G. W. Rains xvii 272 Experimentation. S. P. Sadtler xiii 377 Journal, American. Edited by Ira Remsen xv 273 Physics. T. R. Pynchon "i 517 Physiology and Pathology. V. C. A7aughan xv 275 Practice. George 0. Caldwell xiv 537 Principles, First Step in. H. Leffman xvi 424 Society, Journal of American xv 273 Chemistry. C. L. Bloxam xvii 413 Birth of. G. F. Rodwell iv V57 Changes in Industrial, in the last Fifty Years. J. W. Mallet xx 132 Common Life of. J. F. W. Johnston xvi 701 Early Literature of. H. C. Bolton ix 249 Elementary. S. F. Peckham xi 501 First Book of Qualitative. A. R. Prescott xvi 567 for Students, Experimental Organic. H. C. Jones xix 710 Hand-Book of Modern. C. M. Tidy xiv 115 Inorganic, vol. ii, The Metals. T. E. Thorpe xii 753 Legal. A. Naquet ix 249 Lessons in Elementary. H. E. Roscoe xiv 538 New Encyclopedia of ix 374 ; x 713 ; xiii 755 Organic. M. M. Watts vi 632 Outlines of Modern. C. Gilbert Wheeler xii 370 Principles of Theoretical. Ira Remsen xi 759 Strecker's Short Text-Book of Organic. J. Wislicenus xx 849 The New. (International Scientific Series.) J. P. Cooke iv 249, 500 Treatise on. H. E. Roscoe and C. Schorlemmer xiii 112 ; xv 417 Twenty Lessons in Inorganic. W. G. Valentin xvi 424 Why the Earth's, is as it is. J. N. Lockyer xi 629 Chemist's Manual. H. A. Mott, Jr xi 246 Chicago Fire. Report of Relief Society vi 624 Children, The Care and Culture of. T. S. Sozinskey xix 122 Tne Management of. A. E. Hale xvii 565 Chimneys. R. Armstrong iii 777 China, The Foreigner in. L. N. Wheeler xx 279 Chinese Immigration. George F. Seward xix 853 Chlorite, Pseudomorphs of. R. Pumpelly viii 377 Cholera Epidemic of 1873 in the United States viii 756 Chordal's Letters, Extracts from xix 126 Christ of Paul, The. C. Reber ix 373 Christian Educators to Modern Science, Relations of. D. S. Martin v 750 Evidences, Logic of. G. F. Wright xix 274 Religion, History of the. C. B. Waite xix 421 Christianity, Antiquity of. J. Alberger vi 756 Christ's Words as revealed to Science, etc. J. B. Turner xiv 538 Chromatics, Modern. O. N. Rood xv 271 Chromos, Prang's Natural History Series of. N. A. Caulkins iv 754 Chronos : Mother Earth's Biography. W. Wood iv 249 Circulation in Plants, Lower Animals, and Man. J. B. Pettigrew ix 247 Civilization considered as a Science. George Harris iv 118 on Duration of Life, Influence of. C. J. Lewis xii 245 INDEX OF VOLUMES I TO XX. 135 VOL. PAGE Cladocera, Notes on. E. A. Birge xiv 829 Classical Literature. C. A. White x 377 Classics, Condensed. ix 504 ; xi 245 Climate, Constituents of. F. D. Lento xiv 682 Coal, Combustion of. W. M. Barr xv 562 Composition of. P. Schweitzer via 757 its History and Uses. Edited by Professor Thorpe xv 277 -Mines, Cases met with in. J. J. Atkinson vi 752 -Regions of America. J. Macfarlane iii 594 Codfishery, Gill-Nets in the. J. W. Collins xix 564 Coffee, History, Cultivation, and Uses of. R. Hewitt, Jr ii 753 Collegiate Control and Culture, New Departures in. Caleb Mills xvii 563 College Directory, American. C. H. Evans xiv 116 Colleges, American. C. H. Thwing xiv 244 Color-Blindness, Dangers from. B. J. Jeffries xiv 402 ; xv 564 Color, Cause of, of Races and Evolution of Physical Beauty. W. Sharpe. xix 124 in Art and Art-Industry. W. von Bezold x 375 -Sense, The. Grant Allen xv 276 Colorado River, the West, Exploration of the viii 756 Combe, Life of George. C. Gibbon xiv 240 Commonwealth reconstructed. C. C. P. Clark xiv 535 Comparative Anatomy, Elements of. C. Gegenbaur xv 277 of the Domestic Animals. A. Chauveau iv 246 Concepts of Modern Philosophic Thought, Fundamental. R. Eucken. . xvii 413 Connecticut, Peters's General History of. S. J. McCormick xii 113 Constants of Nature. F. W. Clarke ix 762 Consumption. Thomas J. Mays xviii 703 Is, contagious ? H. C. Clapp xix 274 Relation of Physical Exercise to. R. B. Davy xv 276 Transmission of. A. C. Hamlin v 758 Cookery, Hand-Book of National Training-School of . . . xiii 377 Lessons in. E. A. Youmans xiii 625 Practical, and Dinner-Giving. Mary F. Henderson x 626 Cooking, First Lessons in. Lady Barker v 250 Manual, The. Juliet Corson xi 373 Cooperation as a Business. C. Barnard xix 417 Corals and Coral Islands. J. D. Dana i 241 Corn, Indian. E. L. Sturdevant xvi 856 Cornell University, Bulletin of the v 758 Coryphodontidaa Odontornithes — New Gigantic Dinosaur. O. C. Marsh, xi 630 Cosmic Philosophy, Outlines of. J. Fiske vi 367 Cotton Production of Louisiana, Report on the. E. W. Hilgard xx 418 -Worm. C. V. Riley xvii 276 -Worm of the Southern States. A. R. Grote viii 378 Crayfish, The. (International Scientific Series.) T. H. Huxley xvi 850 Creation, Anonymous Hypothesis of. J. J. Furniss xi 502 Bible Narrative of. A. R. Grote xvi 705 Creed and Deed. Felix Adler xiii 117 of Christendom. W. R. Greg xiii 116 Criminality. W. G. Stevenson xii 374 Criticism, Essays in Literary. E. H. Hutton x 627 136 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Currency and Banking. Bonamy Price viii 373 Question. R. W. Hughes xv 420 Cyclopaedia, American ix 623 of Common Things, Young Folks'. J. D. Champlin xvi 424 of Persons and Places, Young Folks'. J. D. Champlin xviii 848 of Practical Receipts, Cooley's, revised by R. V. Tuson xv 129 D Dakota Nation, Calendar of the. G. Mallery xi 502 Dance of Death. W. Herman xiii 757 Darwin, Erasmus. E. Krause xvi 707 Darwiniana. Asa Gray ix 624 Darwinism and other Essays. John Fiske xvi 565 Refutation of. T. W. O'Neill xvi 851 What is? C. nodge v 246 Davenport Academy of Natural Sciences, Proceedings of . . . . x 377; xii 373; xvii 700 Dead, Disposal of the. E. J. Bermingham xx 418 Death, After, what? W. H. Piatt xv 130 The To-morrow of. By Louis Figuier i 118 Deep-Sea Soundings. T. F. Jewell ... xiv 117 Sounding and Dredging. C. D. Sigsbee xviii 136 Degeneration: A Chapter in Darwinism. E. Ray Lankester xvii 848 Delusions, Epidemic. F. R. Marvin v 757 Scientific Basis of. George M. Beard xi 624 Democracy in Europe. Sir Thomas Erskine xiii 753 ; xiv 6S2 Demonology and Devil Lore. M. D. Conway xiv 824 Dermatology, Archives of. A Quarterly Journal, edited by L. D. Bulkley. vi 632 Descent and Darwinism. Oscar Schmidt. (International Scientific Series.) vi 625 Deterioration and Race Education. S. Royce xii 503 ; xiv 241 Deutsch Rundschau. Monthly Journal, edited by Julius Rodenberg. .. . vi 250 Devonian Trilobites and Mollusks of Errere. C. F. Ilartt vii 627 Diamontiferous Regions of Parana, Brazil, Geology of the. O. A. Derby xvi 423 Dickinson College, Pennsylvania, Sketch of. C. F. Himes xv 845 Dictionary of English, Etymological. W. W. Skeat xv 421 of German Terms used in Medicine. G. R. Cutter xvi 853 Diet in Health and Disease. T. K. Chambers vii 626 Diet-Cure, The. T. L. Nichols xix 418 Dinichthys, Structure and Relations of. J. S. Newberry x 506 Dinners, Fifteen-Cent, for Working-men's Families. J. Corson xii 244 Twenty-Five-Cent. Juliet Corson xiii 632 Dinocerata, Principal Characters of the. O. C. Marsh ix 249 Dinosaurs, American Jurassic. O. C. Marsh xiv 82'J ; xix 562 Diphtheria. R. R. Gregg xviii 566 Diptera, Western. C. R. Osten-Sacken xi 503 Discussion, Current. E. L. Burlingame xiii 631 Discussions, Philosophical. C. Wright xi 117 Disease in Man and other Animals, Community of. W. L. Lindsay vi 630 Problems in the Prevention of. J. R. Weist xvii 565 Diseases, Nomenclature of. J. M. Woodworth vi 631 of Modern Life. B. W. Richardson ix 114 INDEX OF VOLUMES I TO XX. 137 VOL. PAGE Dispensatory, The National. A. Stille" and J. M. Maisch xv 135 Dissection, Hand-book of Vertebrate. E. N. Martin xx 280 Dissertations and Discussions. J. Stuart Mill viii 500 Doubt, Defense of Philosophic. A. J. Balfour xvi 130 Drainage for Health. J. Wilson xix 121 Surface-, of the Metropolitan District. 0. W. Folsoni x 630 Draw, Learning to. Viollet-le-Duc xviii 706 Drawing. Hermann Kriisi v 374 Free-hand v 503 Drawings, Working, and how to use them. L. M. Haupt xix 420 Druggists' Gazette, German- American. Edited by G. W. Kachel xvii 567 Drugs that enslave. H. H. Kane xix 273 Dwelling-llouses. W. H. Corfield xvii 417 Dwellings for Laboring Classes, Improved xvii 134 Dynamics. J. T. Bottomley xi 375 Elements of. W. K. Clifford xiii 630 E Ear, Mechanism of the. H. Helmlioltz id 249 Earth, The, a Great Magnet. A. M. Mayer ii 626 Ancient Life History of the. H. A. Nicholson xii 631 The Figure of the. M. Merriman xx 134 Ecce Spiritus xx 702 Eclipse, Total Solar, 1878. S. P. Langley xx 419 Economics of Industry. Alfred and Mary Paley Marshall xvi 853 Edda, The Younger. R. B. Anderson xvi 852 Educational Journalism. C. W. Bardeen xx 132 Reformers, Essays on. R. H. Quick iv 758 Education as a Science. Alexander Bain. (International Scientific Series.) xiv 822 Brooklyn Journal of. ... vii 502 H. Spencer. Cheap Edition xvii 560 Circulars of Bureau of. xix 123 ; xx 418 Cyclopaedia of. II. Kiddle and A. J. Schem xi 497 in Colorado, Report of Superintendent of. xix 126 Industrial. Alexander Hogg xiv 828 in Japan. Arinori Mori iii 120 National, in Italy, France, Germany, and England. C. W. Bennett, xv 852 Some Thoughts concerning. John Locke xviii 135 Spirit of. M. TAbbe A. Beesau xix 274 Report of Commissioner of. viii 500 ; xi 247 ; xix 120 ; xx 562 Thoughts on Agricultural. E. L. Sturtevant xix 421 Effort, The Feeling of. William James xviii 706 Egypt as it is. J. C. McCoan xii 374 Electric Induction. J. E. H. Gordon xvii 133 Lighting by Incandescence. W. E. Sawyer xix 124 Electrical and Magnetic Measurement, Exercises in. R. E. Day ix 376 Society, Journal of the American viii 757 Electricity and Electric Telegraph. G. B. Prescott xi 116 and Magnetism, Physical Treatise on. J. E. II. Gordon xviii 421 in its Relations to Medicine and Surgery, Lecture on. A. D. Rock- well xix 274 138 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Electricity, Lesson in. John Tyndall xi 116 Electro-Metallurgy. Alexander Watt xvi 567 Elevations, List of. H. Gannett xi 627 of Certain Datum-Points on the Great Lakes and Rivers, etc. J. T. Gardner vi 753 ■west of the Mississippi, List of. vii 502 Elephant, Land of the White. F. Vincent xx 703 Embryology, Elements of. Michael Foster vii 242 Outlines of Comparative. A. S. Packard viii 753 Emigrants, Information for. J. R. Procter xix 562 Emotions and the Will. Alexander Bain viii 634 Energy, Conservation of. B. Stewart. (International Scientific Series.) iv 627 Engineer, How to become a Successful. B. Stuart iv 756 The Field. W. F. Shunk xvii 703 The Mechanical. R. H. Thurston viii 376 Engineering and Mining Journal vii 244 Construction. J. E. Shields xiii 118 Engineers, The Boy. J. Lukin xiii 376 ; xix 125 England in the Eighteenth Century, History of. W. E. H. Lecky xiii 113 Her People, Polity, and Pursuits. T. H. S. Escott xvii 126 Lectures on the History of. M. J. Guest xv 851 English Constitution. Walter Bagehot xi 110 Language and its Early Literature. J. H. Gilmore xvi 565 Language and Literature, Origin, Progress, etc. J. A. Weisse xiv 678 Language, History of the. T. R. Lounsbury xvii 131 Entomological Commissioner, Report of the United States xii 370 ; xiv 401 ; xv 711 ; xix 417 Papers. C. V. Riley xii 504 Entomologist, The American. Edited by C. Y. Riley . „ . xvi 853 The North American. Edited by A. R. Grote xvii 850 United States, Department of Agriculture, Report of the xvi 856 Eozoon Canadense at Cote St.-Pierre. J. W. Dawson ix 504 Essays, Mixed. Matthew Arnold xv 279 on Mind, Matter, Force, etc. C. E. Townsend x 505 Ethics, An Essay in. Natural Law. Edith Simcox xiii 114 Data of. Herbert Spencer xv 705 Methods of. Henry Sidgwick xii 368 or Science of Duty. John Bascom xvi 125 Spencer's Data of, Reception of xvi 282 Ethnography and Philology of the Hidatsa Indians. W. Matthews xii 371 Ethnology, Contributions to North American xii 753 Etymology, A Dictionary of English. H. Wedgewood i 118 Evolution and Progress. W. J. Gill vi 245 Doctrine of. A. Winchell v 375 of Living Things, and Application to Religion. George Ilenslow. . . iv 503 of the Human Race. Dr. A. Steinach xv 846 Philosophy of. Actonian Prize Essay. B. T. Lownc iv 116 Exploring Expedition from Santa F6 to Grand and Green Rivers, Report on. J. S. Newberry x 629 Explosive Agents. W. N. Hill viii 756 Eye, Diseases of the. R. B. Carter xiii 113 IXDEX OF VOLUMES I TO XX. 139 VOL. PAGE Eyesight, Good and Bad. E. B. Carter xvii 132 Eyes, How to take care of our. H. 0. Angell xiii 757 F Facts and Events, Compendium of. E. Emery xii 113 and Figures, Standard. A. G. Sullivan ix 502 Faith, Scientific Basis of. J. J. Murphy ix 759 Faiths, Ancient, embodied in Ancient Names. Thomas Inman v 632 Family Government, Aids to. Bertha Mayer xv 565 Faraday as a Discoverer, J. Tyndall ; Faraday, Michael, J. n. Gladstone ; Faraday, Michael, A. De La Rive ii 377 Fasting Girls. W. A. Hammond xv 278 Fatalism, Modern Physical. T. E. Birks x 501 Fermentation. P. Schiitzenberger ix 245 Studies in. L. Pasteur xvii 277 Ferns in their Homes and ours. J. Robinson xiv 680 of Kentucky. J. Williamson xiii 631 Our Native. L. M. Underwood xix 273 Fertilization, Effects of Cross and Self. Charles Darwin xi 244 Fertilizers, Report of Field Experiments with. W. O. Atwater xx 416 Fifty Years of my Life. George Thomas, Earl of Albemarle x 376 Filth-Diseases and their Prevention. John Simon x 376 Finance, An Alphabet in. G. McAdam xi 245 The A B C of. Simon Newconib xii 504 Fire-Burial among our Germanic Forefathers. K. Blind viii 243 Fire Insurance, Exposures in. W. F. Ross Fish and Fisheries, United States Commissioner of . . v 752; xi 757; xiv 240; xvi 855; xix 121 Commission, Report of Ohio xi 503 Facts and Fancies about , xi 243 Fisheries of California, Eeport of Commissioner of, 1878-'79 xvi 856 Fishes of the East Coast of North America, Catalogue of. Theodore Gill, vii 626 of Upper Georgia. D. S. Jordan xii 114 The Food of. S. A. Forbes xix 125 Fleets of the World. F. A. Parker x 756 Flint Implements in Upper Egypt. H. W. Haynes xix 855 Flora of North America, Synoptical. Asa Gray xiii 371 Floral Decoration for the Dwelling-House. A. Hassard ix 115 Flower-Painting. Mrs. William Duffield. xiv 400 Flowers and Ferns of the United States. Thomas Meehan xiii 502, 737; xiv 683; xv 276 Foes of the Farmer. A. L. Perry vi 631 Foetal Manatee and Cetacean. B. G. Wilder viii 376 Fonakigrafik Teacher, The First. J. B. Smith x 630 Food for Invalids. J. M. Fothergill xvii 852 ; xviii 843 Foods. E. Smith. (International Series.) iii 392, 647 Forces of Nature. A. Guillemin ii 628 ; x 754; xi 501 Forensic Medicine and Toxicology. W. D. Hemming xvii 133 Forestry, Report on. F. B. Hough xiii 755 Forest-Culture and Eucalyptus-Trees. E. Cooper x 629 Forests a Necessity, Protection of. S. V. Dorian xvii 134 i4o THE POPULAR SCIENCE MONTHLY. VOL. PAGE Fossils, American Palaeozoic. S. A. Miller xii 373 Foundations. Jules Gaudard xiii 118 Freedom in Science and Teaching. E. Haeckel xvi 127 Free Land and Free Trade. S. S. Cox xvii 702 Keligious Association, Proceedings xiv 116 ; xv 851 Free-Thinking and Plain Speaking. Leslie Stephen xii 751 -Trade Movement in England, History of the. A. Mongredieu xix 273 Frog, The Common. St. George Mivart vi 373 Fruits, Seedless. E. L. Sturtevant xx 414 Fuel. C. W. Siemens and J. Wormald v 2o0 : Its Combustion and Economy. C. K. Clark xvi 566 Fungi : their Nature and Uses. M. C. Cooke vii 240 Fur-bearing Animals. Elliott Coues xii 246 Future Life, Critical History of the Doctrine of a. W. R. Alger xiii 375 G Galvanometer, The, and its Uses. C. H. Haskins v 123 Gems, Notes on " Inclusions " in. Isaac Lea x 505 Popular Treatise on. L. Feuchtwanger ii 378 Genesis of Species, Influence of Physical Conditions in the. J. A. Allen, xi 62 S Geogony, Scientific and Mosaic, compared. P. G. Robert xv 421 Geographical Surveys in the United States. G. K. Warren xi 377 Surveys west of the One Hundredth Meridian, Eeport of United States. George M. Wheeler vii 501 ; xi 628 ; xiii 504; xx 563 Variation of North American Mammals. J. A. Allen ix 761 Geography, Manual of Physical. C. A. White iv 756 Physical. J. Young iv 757 Geological Agency of Lateral Pressure. W. H. Niles ix 761 and Geographical Survey of Colorado. F. V. Ilayden ix 628 ; xii 246; xvii 27S and Geographical Survey Territories, Bulletin of United States. . vii 502; ix 503; xi 760, 761; xii 371; xiii 631; xiv 6S3 ; xvii 566 and Natural Historic Survey, Minnesota. N. II. Winchell viii 757 ; xiv 542 ; xvi 851 Notes. W. B. Rogers viii 758 Story briefly told, The. J. D. Dana vii 497 Geological Survey, Alabama. E. A. Smith vii 626 ; xix 561 Survey, Indiana, Report of the. E. T. Cox viii 244 ; xi 245 ; xvi 708 Survey, Iowa, Report on. C. A. White v 754 Survey, Ohio, Report on i 630 ; iv 374 ; x 242 ; xvi 129 Survey, Pennsylvania, Second vii 755 Survey, United States. Clarence King xx 563 Survey, Wisconsin. J. C. Chamberlin xiii 504 Geology and Physical Geography of the Lower Amazonas. C. F. Ilartt. . v 758 An Outline of General. Theodore B. Comstock xv 274 Elements of. J. Le Conte xii 501 Man ual of. J. D. Dana v 751 of Wisconsin xiv 401 Outline of, Field. A. Geikie xv 710 Geometrical Drawing, Elementary Course of. G. L. Voso. . xiv 402 ; xviii 705 Geometry and Projection, Practical Plane. Henry Angel xviii 704 INDEX OF VOLUMES I TO XX. 141 VOL. PAGE Geometry, Elementary Treatise on Analytical. E. A. Bowser xviii 275 Elements of. Simon Newcomb xx 853 Inventional. W. G. Spencer x 502 German Book, First. J. H. Worman xix 274 Second. J. H. Worman xix 561 Thought. Karl Hillebrand xviii 272 Geyser Basins of the Yellowstone Park. Theodore B. Comstock xii 372 Ghostism, A Key to. Thomas Mitchell xvii 417 Girl, An American. Sola xii 632 Glacial Epoch and Distribution of Insects in North America. Paper by A. P. Grote x 506 Period in the Southern Hemisphere. Thomas Belt xii 755 Glaciation, On Maximum Synchronous. W. J. McGee xx 417 Glaciers. N. S. Shaler xx 411 of New Zealand, Ancient. J. 0. Russell xi 376 of Savoy, Theory of the. L. C. Rendu v 502 Goethe's Faust. Edited by J. M. Hart xi 400 Gold and Debt. W. L. Fawcett xi 630 Gophers. Elliott Coues viii 754 Government, The Science of. S. Y. Blakeslee x 753 Grammar, English. R. Morris vii 119 Grammar of the English Language. W. Colegrove xv 851 Graphical Statics, New Method of. A. J. Du Bois viii 580 Gravity, Measurement of Force of, at Tokio and in Fujinoyama. T. 0. Mendenhall xx 854 Greenland, Native Iron of. J. L. Smith xvi 854 Greenstones of New Hampshire. G. W. Hawes x 376 Greenwich, Report of Observatory of vii 751 H Habit and Intelligence. J. J. Murphy xv 134 Haeckel's Genesis of Man. L. F. Ward xvi 132 Hair, The. 0. H. Leonard xviii 134 Harrowgate Waters. George Oliver xx 562 Harvard College Observatory, Annual Report of (1879) xvii 131 University, Bulletin of the Bussey Institution vii 754 Hay-Fever. George M. Beard ix 760 Health. W. H. Corfield xvii 702 Edward Smith vii 116 Almanac. F. Hoffman x 630 and Education. Charles Kingsley v 632 and Health Resorts. J. Wilson xvii 276 and Healthy Homes. George Wilson xvii 701 and how to promote it. R. McSherry xv 130 Dangers to : A Pictorial Guide to Domestic Sanitary Defects. T. P. Teale xx 706 Fragments. George H. Everett viii 377 Improvement of. J. Knight vii 242 Maintenance of. J. M. Fothergill vi 248 ; vii 496 Primers xv 132 Primers, American xvii 851 10 142 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Health, Public, Reports and Papers on xii 504 Eeport of Michigan Board of viii 755 ; xi 247 Report of Philadelphia Board of (1875) xi 628 Report of the State Board of, of Massachusetts vii 372 ; x 376 ; xi 761 The Ten Laws of. J. R. Black ii 754 Hearing, and how to keep it. 0. H. Burnett xv 420 Heat in the Spectra, Distribution of. W. W. Jaynes xvi 130 Theory of. J. C. Maxwell i 500 Heating and Ventilation. F. Schuman xii 753 Heaven, Expanse of. R. A. Proctor v 248 Heavenward. H. A. Mott xvii 850 Henry, Life and Work of Joseph. F. L. Pope xv 852 Memorial of Joseph xix 855 Heredity. Th. Ribot vii 117 as a Factor in Pauperism and Crime. E. H. Parker xii 374 — its Influence upon the Progress and Welfare of Mankind. E. N. Brush xii 374 Herschel, Caroline, Memoir and Correspondence of. Mrs. J. Herschel. . ix 115 History, Adams's Synchronological Chart of Universal xx 412 English, for Young Folks. S. C. Gardiner xx 417 for Students, English. S. R. Gardiner xx 563 Guide to Modern English. W. Cory xvii 566 Hocking Valley, Mineral Resources of the. T. S. Hunt xx 133 Home and School. Ed. Journal iii 774 Homes, How to make, happy. Mrs. H. W. Beecher xiv 239 Our. H. Hartshorne xvii 417 Honey- Ants of the Garden of the Gods. H. C. McCook xx 703 Horticultural Society, Transactions of Kansas ix 761 Hospitals, Pay, and Paying Wards. H. C. Burdett xvii 416 House, The Old, altered. G. C. Mason xiv 400 -Fly, Transformations of the Common. A. S. Packard v 758 -Plants, Hygienic and Therapeutic Relations of. J. M. Anders. . . xvii 703 Houses, Healthy. William Eassie i 628 Hudson and Mohawk Rivers, Towns along the. B. Fernow xx 853 County, New Jersey, Geology of. J. C. Russell. xviii 704 Hudson's Bay Territory, Life in. H. M. Robinson xvi 708 Hugo, Victor, his Life and Works. A. Barbou xix 271 Human Body, The. H. N. Martin xix 270 Figure, Artistic Treatise on the. H. Warren xx 564 Race, Development of the. A. Steinach xvi 854 Hygiene — Fortnightly Journal of Sanitary Science. Putnam iii 122 and Public Health. Edited by Albert Buck xvi 279 and Sanitary Science. George Wilson xvii 416 Naval. Joseph Wilson xvi 418 School and Industrial. D. F. Lincoln xviii 422 United States Army. J. S. Billings ix 760 Hyperemia, Cerebral. W. A. Hammond xiii 505 I Ice Age, Great, and Relation to Antiquity of Man. J. Geikie v 377 Idioms, Twelve, of the Southwestern United States. A. S. Gatchel x 624 INDEX OF VOLUMES I TO XX. 143 VOL. PAGE Illusions. James Sully. (International Scientific Series.) xix 559 Imaginary Quantities. M. R. Argand xix 420 Immortality. Josie Oppenheim xi 503 Physical Basis of. A. B. Blackwell ix 372 Implements, Weapons, and Ornaments of Great Britain and Ireland, An- cient Bronze. John Evans xx 127 Index Medicus. (Monthly.) Edited by J. S. Billings xv 278 to Publications of the United States Naval Observatory (1845-1875). E. S. Ilolden xvii 276 Indian Question, The. General Pope xiv 542 Territory, Military Map of the. E. H. Ruffner ix 116 Indiana, First Annual Report of the Department of Statistics, etc. (1879) xvii 852 Indians, Former and Present Number of our. Errors respecting North American. G. Mallery xiv 117 Indigestion, Biliousness, and Gout. J. M. Fothergill xix 857 Industrial Conciliation in New York, Ohio, and Pennsylvania. J. D. "Weeks xix 420 News and Inventor's Guide. Edited by 0. B. Norton xvi 856 Industry, Primitive. C. C. Abbott xx 133 Inebriate ? Wbat shall we do with the. T. D. Crothers xx 132 Infectious Diseases, Physics of the. 0. A. Logan xiii 756 Inheritance, Law of, on the Philosophy of Breeding. E. Lewis Sturtevant. vii 373 Insanity and Disease. L. A. Tourtellot vi 507 in Ancient and Modern Life. D. H. Tuke xiii 376 The Problems of. George M. Beard xvii 565 Insects, Devonian, of New Brunswick. S. H. Scudder xix 123 Half-Hours with. A. S. Packard, Jr viii 245 Noxious and Beneficial, Report on. C. V. Riley. . hi 518 ; vii 375 ; ix 761 ; xii 373 of Illinois, Report on the. C. Thomas xv 711 ; xx 413 On xviii 850 of the Garden. A. S. Packard iv 755 Orange. W. H. Ashmead xix 123 Origin and Metamorphoses of. Sir J. Lubbock iv 628 Our Common A. S. Packard iv 247 Instinct. P. A. Chadbourne i 117 Insurance, Life. Elizur Wright v 118 Intelligence, On. H. Taine iv 629 International Review iv 500 Scientific Series iii 648 ; vii 244 Interoceanic Canal and the Monroe Doctrine xvii 127 Invertebrata, Anatomy of the. C. T. H. von Siebold v 502 Invertebrate Fossils collected in 1871, 1872, and 1873, Preliminary Re- port on. C. A. White vii 119 Iron and Steel Construction. J. J. Weyrauch xi 630 Iron-Ores, Metallurgic Properties of Missouri. A. Schmidt vi 629 Iroquois, League of the. B. Hathaway xx 707 Isopoda of New England and Adjacent Waters, Report on the Marine. O. Harger xix 126 Israelites, Eminent, of the Nineteenth Century. H. S. Morais xviii 136 i44 THE POPULAR SCIENCE MONTHLY. VOL. PAGE J Japan, Progressive. Le Gendre xv 711 Jesus in the Light of the Nineteenth Century. William Denton xii 752 Jesus of Nazareth, The Historical. M. Schlesinger ix 504 Jew, The Wandering. M. D. Conway xx 564 Johns Hopkins Biological Laboratory, Studies from the xix 116 University, Report of ix 376 ; xiv 540 Journalism, Views and Interviews on. C. F. Wingate viii 757 Jukes, The. E. L. Dugdale xi 118 Jupiter, Observations on. L. Trouvelot xix 420 Justice, Administration of, under Military and Martial Law. C. M. Clode . ii 754 K Kabala, The, or the True Science of Light. S. Pancoast xii 752 Kansas Academy of Sciences, Transactions of xii 503 Review (Monthly.) xvi 851 Keramics for Students, Practical. C. A. Janvier xvii 704 Kerguelen Island, Contributions to the Natural History of. J. H. Kidder, ix 504 Kindergarten Messenger. E. P. Peabody v 249 ; xi 377 Knowledge, First Book of. F. Guthrie xx 702 L Labor-making Machinery. F. P. Powers xvii 127 Labor Question, The xx 708 Talks about. J. N. Larned x 108 Laboratory, Necessity of a Mechanical. R. H. Thurston viii 758 Teaching. C. L. Bloxam xv 848 Land, A Forbidden. E. Oppert xvii 277 of the White Elephant. F. Vincent v 244 Question, The Irish. Henry George xix 119 Landsberg's Illustrated Weekly xvii 704 Language, Life and Growth of. W. D. Whitney. (International Sci- entific Series.) vii 638 Languages, Indian, Introduction to the Study of. J. W. Powell xviii 844 Law, Science of. Sheldon Amos v 749 Lawyers, Short Studies of Great. Irving Brown xiii 757 Leather, Notes on. D. A. Lyle xii 503 Le Brun, Souvenirs of Madame Vigee xv 709 Lectures and Essays. V. W. Blanchard xii 114 W. K. Clifford xvi 703 Legal Tender. Henri Cernuschi xi 624 Lens, The (a Quarterly Journal of Microscopy) i 629 Liberty, Equality, Fraternity. J. F. Stephen iii 395 Libraries in the United States, Public x 374 Library Catalogue. C. A. Cutter x 629 Journal, American. Edited by M. Dewey x 628 The. Andrew Lang xix 562 Liens, Mechanics'. J. T. Hoyt xx 562 Life and her Children. A. B. Buckley xviii 701 and Mind, Problems of. G. n. Lewes vii 750 ; xv 419 ; xvi 852 Assurance. J. II. Van Amringe v 755 INDEX OF VOLUMES I TO XX. 145 VOL. PAGE Life History of our Planet. W. D. Gunning x 628 in Nature : Man and his Dwelling-Place. James Hinton ii 118 in other Worlds. A. Miller xiv 399 -Insurance, Notes on. G. W. Smith x 751 — its True Genesis. R. W. Wright xvii 415 -Saving Apparatus, Eeport on. D. A. Lyle xv 417 ; xix 561 -Saving Service, Annual Report of the United States (1880) xix 563 Value of — Reply to Mallock xvi 424 worth living ? Is. W. H. Mallock xvi 417 Light, A. M. Mayer and 0. Barnard. (Experimental Science Series.) . . . xi 757 and Color, Principles of. E. D. Babbitt xiii 756 and Photography, Chemistry of. H. Vogel. (International Sci- entific Series.) vi 750 -Houses, Tour of Inspection of European. G. H. Elliot vi 370 Lectures on, in the United States. J. Tyndall ii 754 ; xi 242 Nature of. Eugene Lommel viii 497 Polarization of. William Spottiswoode vi 629, 754 Lightning-Protection. H. W. Spang xii 112 Literature, Syllabus of Anglo-Saxon. J. M. Hart xix 126 Lithology of the Adirondacks. A. R. Leeds xii 112 Locke's Conduct of the Understanding. Edited by T. Fowler xix 418 Locomotion, Animah J. B. Pettigrew. (International Scientific Series.) . iv 753 Radical Mechanics and Animal. W. P. Wainwright xvii 702 Locomotive, Catechism of the. M. N. Forney vii 243 Locust-Plague in the United States. C. V. Riley xii 113 Logic, Inductive and Deductive. A. Bain v 631 London, Scientific. B. H. Becker vi 751 Walks in. J. C. Hare xiv 542 Longitude in the West Indies and Central America, Report on the Tele- graphic Determination of Differences of. F. M. Green xii 244 of East Coast of South America, Telegraphic Determination of. . xviii 705 Loxolophodon and Uintatherium, Memoir on. H. F. Osborn. xx 415 Lunacy, Report of the Commissioners of, of Massachusetts. vii 244 M Macaulay, Life and Letters of. G. O. Trevelyan ix 627 Machinery, Kinematics of. F. Reuleaux x 244 Machines, Among xviii 705 Magnetic Determinations, Report on. F. E. Nipher xvii 134 Magnetism and Electricity. F. Guthrie ix 249 Elements of. J. Angell vi 755 Vital. F. T. Parsons xiii 115 Mammals, American Insectivorous. Elliott Coues xi 628 of Kansas, Colorado, etc. J. A. Allen v 758 Mammoth Cave of Kentucky. W. S. Forwood viii 758 Man, Early, in Great Britain. W. Boyd Dawkins xvii 697 Evolution of. E. Haeckel xv 415 Natural History of. A. De Quatrefages vii 117 Palaeolithic, Neolithic, etc., not inconsistent with Scripture. Nemo, ix 503 Pliocene, in America. J. C. Southall xx 418 upon the Earth, Appearance of. J. C. Southall xiii 245 IT 146 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Mankind, Early History of. E. B. Tylor xiv 536 Manners and Customs, Primitive. J. A. Farrer xvi 421 Man's Origin and Destiny, from the Platform of the Physical Sciences. G. P. Lesley xx 282 Marine Hospital Service, Annual Eeport of the United States (1874). . . viii 375 Marocco and the Great Atlas, Tour in. J. D. Hooker xiv 821 Martyrdom of Man. W. Reade v 121 Materia Medica. 0. Dunham xv 277 Materialism, Ancient and Modern xx 419 Materials of Construction, Mechanical Properties of. R. H. Thurston. . . v 757 Mathematics, American Journal of. Edited by J. J. Sylvester. . . xiii, 372, 752 Philosophy of. A. T. Bledsoe xviii 423 Matson, David and Anna. A. S. Duniway xi 245 Matter and Force. J. K. Macomher x 630 and Motion. J. Clerk Maxwell xiii 503 and other Essays. J. A. Picton hi 775 Fourth State of. A. E. Outerbridge, Jr xix 419 Mechanic Arts, Instruction in. E. Atkinson xvii 276 Mechanical Dictionary, Knight's American. E. H. Knight x 372 Mechanic's Friend, The. W. E. A. Axon viii 376 Text-Book of Elementary. E. S. Dana xviii 706 Mechanics, Elements of. J. W. Nystrom vii 243 Elementary Hand-Book of, Theoretical. Applied. William Rossiter. x 377 Medical Heresies historically considered. G. C. Smythe xviii 565 Science, Dictionary of. R. Dunglison iv 630 Science, Theory of. TV. R. Dunham x 246 Medicine, Preventive. C. C. F. Gay viii 377 State, in its Relations to Insanity. N. Allen viii 499 Melanosiderite. J. P. Cooke, Jr viii 376 Men and Apes. St. George Mivart iv 630 of Science, English. Francis Galton vii 235 Menagerie, Report of Central Park. W. A. Conklin xii 372 ; xiii 245 Mental and Nervous Disease, Journal of viii 637 Mental Physiology, Principles of. W. B. Carpenter v 115 Metal-Mining, Principles of. J. H. Collins vi 756 Metallurgical Review (Monthly) xii 115 Metallurgy, A Manual of, Vol. II. W. H. Greenwood viii 245 Metaphysics of the School, The. Thomas Harper, S. J xvii 132 Metamorphism by Burning of Lignite-Beds in Dakota and Montana. J. A. Allen vi 630 Meteoric Fire-Balls. D. Kirkwood xvi 856 Meteorite, Examination of Gases from the, February 12, 1875. A. W. Wright viii 376 Meteorological Observations in Colorado and Montana vii 502 Observatory, Report of the New York. D. Draper. . xi 377 ; xii 372 ; xiv 117; xvii 133 Meteorology, Elements of, Part II. J. H. Tico viii 373 Modern xvi 708 witli Health, Connection of. William Blasius ix 373 Metric System, The xi 376 Weights and Measures xiv 116 INDEX OF VOLUMES I TO XX. H7 VOL. PAGE Metrology, Inductive. W. J. McGee xix 563 Microscope, The, and Microscopical Technology. Heinrich Frey iii 121 and its Revelations. W. B. Carpenter vii 116 ; xx 283 Hints on Selection and Use of the. J. Phin viii 754 in Medicine. L. S. Beale xvii 703 How to use the. John Phin xii 585 The. C. H. Stowell xix 562 Microscopic Mounting, Manual of. John H. Martin ii 247 Microscopical Journal, American Quarterly. Edited by R. Hitchcock. . xiv 539 xvi 853 Microscopist, The. J. H. "Wythe xi 246 Microscopist's Annual for 1879 xvii 850 Microscopy, American Journal of viii 755 Middletown Scientific Association. F. Gardner xix 418 Migration, Early. C. W. Brooks xi 118 Milk, Analysis of. E. H. von Baumhauer xi 376 Mill, John Stuart, Autobiography of iv 376 Mill-Dams, Construction of. James Leffel & Co v 502 Milton Anthology, The xi 373 Mind and Brain. H. Calderwood xv 850 (A Quarterly Review.) viii 497 The Physiology of. Henry Maudsley xii 111 and the S&jret of a Clear Head. G. Mortimer-Granville xvii 417 Mineral Deposits in Essex County, Massachusetts. C. J. Brockway. . . viii 377 Springs of the United States and Canada. George E. Walton iii 515 Mineralogy. J. H. Collins xiii 504 Minerals by the Blow-pipe, Determination of. C. W. C. Fuchs vii 627 Determination and Classification of. J. C. Foye vii 376 etc., of Pacific Coast, Exhibit at Paris in 1878 xiv 542 Tables for determining, by their Physical Properties. Weisbach . . . vi 628 Tables for the Determination of. P. Frazer, Jr xiii 117 Mining, Manual of Hydraulic. T. F. Van Wagenen xviii 136 Minnesota Academy of Natural Sciences, Bulletin of the (1877) xiii 632 Geological and Natural History of xviii 850 Missouri State University, Report of (1875) viii 243 Money. F. A. Walker xii 632 and Legal Tender in the United States. H. R. Linderman xii 633 and the Mechanism of Exchange. W. S. Jevons viii 117 Robinson Crusoe's. D. A. Wells xii 504 Trade, and Industry. F. A. Walker xv 564 Moral Maxims for Schools and Families. C. C. Baldwin xi 374 Nature, Man's. R. M. Bucke xv 563 Morals of Evolution. M. J. Savage xvii 564 Mortuary Customs of North American Indians. H. C. Yarrow xviii 133 Moths, The Geometrid, of the United States. A. S. Packard xi 373 Mound-Builders of Wisconsin. J. M. De Hart xvi 423 Mouth, Lower Forms of Life found in the. C. N. Peirce viii 757 Muridse, On the. Elliott Coues vii 119 Muscular Power, Source of. Austin Flint, Jr xii 751 Museum, Annals of Mexican National xii 505 Bulletin United States National viii 757 ; ix 50-4 ; xv 422 148 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Museum, University of Virginia, Opening Brook's xiv 117 Mushrooms, Poisonous. J. Ott xii 755 Music and Musicians, Dictionary of. George Grove . . xiii 114, 505 ; xiv 244 ; xv 849 Influence of, on Health and Life. H. Chouret vi 628 Philosophy of. William Pole xv 847 ? What is. J. L. Eice vi 755 Mutual Life-Insurance Company, History of Business and Condition of the New York • iii 122 Myelitis of the Anterior Horns. E. C. Seguin xi 376 Mythology and Folk-Lore, Comparative. Sir G. W. Cox xx 565 Myths and Myth-Makers. J. Fiske, Jr ii 752 ; iii 773 N National Culture for Young Americans. S. S. Boyce xvi 133 Native Eaces of the Pacific States. H. H. Bancroft vi 506 Natural History, Half-Hour Eecreations in vi 630 of Illinois xi 376 of Montana and Dakota, Notes on vii 119 Society of Wisconsin xii 113; xvii 567 Natural Science, Buffalo Society of, Bulletin of the v 502 ; viii 758 Minnesota Academy of, Bulletin of vi 632 Philadelphia, Journal of Academy of xirf 376 ; xix 417 Poughkeepsie Society of, Proceedings of ix 502 Short History of, from the Time of the Greeks to the Present ix 114 Naturalist, The American viii 637 Nature and Culture. H. Eice viii 245 and Life. F. Papillon vii 114 Lessons from. St. George Mivart ix 373 of Things. (Science Primer.) J. G. MacVickar xiii 756 Navigation in Theory and Practice. H. Evers vii 754 Theoretical, and Nautical Astronomy. L. Clark iii 393 Nebula M 17, Supposed Changes in the. E. S. Holden ix 503 Nervous Diseases, Treatment of, by Electricity. F. Fieber vi 756 Exhaustion. George M. Beard xvii 275 ; xix 421 Nervousness, American. George M. Beard xix 562 Nests and Eggs of American Birds. E. Ingersoll xvi 131 Neurility. S. V. Clevenger xvi 282 Neutral Axes, Experiments showing the Character and Position of. L. Nickerson v 757 New York, Eeport of the Department of Public Works, City of (with Spe- cial Report on Water-Supply) xvii 129 Niagara ; its History and Geology. By G. W. nolley i 756 NoctuidoB of America north of Mexico. A. E. Grote viii 499 Nordenskiold, Arctic Voyages of xvi 563 Norway, A Summer in. J. D. Caton vii 753 Nostrums and the Public Health. A. B. Prescott xix 563 o Obelisk and Freemasonry. J. A. Weisse xvii 849 Observatory, Report of United States Naval (1872) vii 500 INDEX OF VOLUMES I TO XX. i4g VOL. PAGE Ocean, The, as a Ilealth-Resort. W. S. Wilson xviii 423 Wonders. W. E. Damon xv 275 Odontornithes. O. 0. Marsh xviii 270 Ontological Science, Outlines of. H. N". Day xiv 399 Opium -Hahit and Alcoholism. F. H. Hubbard xx 706 Orieutal and Biblical Journal. Edited by S. D. Peet xvii 850 Ornithological Club, Quarterly Bulletin of Nuttall ix 505 ; xii 753 Specimens collected in 1871-73, Report on vi 632 Ornithology, American. Alexander Wilson and C. L. Bonaparte xvi 422 Field. E. Coues v 376 of Red River of Texas. C. A. II. McCauley xi 630 Ortkoepist, The. Alfred Ayres xviii 423 Otology, American Journal of. Edited by C. J. Blake xiv 828 Owens College Essays and Addresses v 753 P Pain to Weather, Relations of. S. W. Mitchell xii 754 Painters' Magazine (Monthly). G. Sullivan ix 249 Paper, Mexican. P. J. Valentini xx 413 Papilio (organ of the New York Entomological Club) xix 126 Parasites and Messmates, Animal. J. P. Van Beneden viii 753 Parks and Gardens of Paris. W. Robinson xiv 243 Parse, How to. E. A. Abbott xiv 826 Peabody Academy of Science, Memoirs of the ix 503 Museum of American Archaeology and Ethnology, Reports of. . vii 627 ; xv 710; xvii 698 Penn Monthly ix 629 Pentateuch, Study of the. R. P. Stebbins xx 706 Perception of Space and Matter. J. E. Walter xvii 132 Perinchief, Octavius. C. Lanman xvi 561 Perspective, Linear. F. E. Hovey xi 761 Theory and Practice of Linear. Y. Pellegrin iv 756 Pessimism. James Sully xii 631 Petroleum, Lecture on. P. Schneitzer xvi 856 Pharmacogrrphia. F. Fluckiger xvii 414 Pharmacology and Therapeutics. T. L. Brunton xx 134 Philological Association, Proceedings of the Seventh Annual Session of the American viii 374 Philology, American Journal of. Edited by B. Gildersleeve xvii 851 Philosophers, English : Bacon. T. Fowler xx 852 Hartley and J. Mill. G. S. Bower xix 709 Philosophic Ideas. J. Wilmshurst xii 754 Philosophy, Ancient, from Thales to Cicero. J. B. Mayor xx 415 Cosmic. (Note on.) J. Fiske v 250 Journal of Speculative. W. T. Harris vi 118 Paradoxical xiv 825 The Primary Principle of. William J. Gill ix 115 Photometric Researches. W. H. Pickering xix 120 Phrenology, Historical Review of. N. Capen xix 273 Physical and Religious Knowledge, Similarities of. J. T. Bixby ix 759 Geography, Elementary Lessons in. A. Geikie xii 246 i5o THE POPULAR SCIENCE MONTHLY. VOL. PAGE Physical History of Triassic Formation of New Jersey and Connecticut Valley. J. 0. Russell xvi 707 Manipulation, Elements of. E. C. Pickering iv 117 ; x 246 Science, Recent Advance in. P. G. Tait ix 248 ; x 627 Physics and Politics. W. Bagehot ii 503, 629 Concepts and Theories of Modern. (International Scientific Series.) J. B. Stallo xx 557 Elements of. Neil Arnott x 500 New Text-Book of. Le Roy C. Cooley xviii 135 Practical and Molecular. F. Guthrie xv 420 Transcendental. J. C. F. Zollner xviii 702 Physiography. T. H. Huxley xii 749 Physiological Chemistry of the Animal Body. A. Gamgee xviii 421 Physiology and Pathology, Chemical. V. C. Vaughan xix 709 Animal. J. Cleland vi 509 Elementary Practical. M. Foster x 373 for Practical Use. James Hinton v 499 Journal of. Edited by M. Foster. . . xv 709; xiii 751; xviii 565; xx 128 New Manual of. Professor Kiiss vii 243 New School of. R. J. Duriglison xviii 566 of Man. Austin Flint, Jr i 756 ; vi 244 of Muscles and Nerves, General. J. Rosenthal xix 412 Talks on. T. C. Duncan xiv 825 Text-Book of. M. Foster x 756 ; xvii 277 Text-Book of Human. Austin Flint, Jr. viii 753 Piers used in Bridges, Proportions of. C. Bender iv 248 Plains of the Great West and their Inhabitants. R. I. Dodge x 754 Plant-Book, American (for preserving Specimens). H. H. Ballard xv 275 Plants, Beneficial Influence of. J. M. Anders xv 565 collected in 1871-'73, Catalogue of. vi 632 Form of Seed as a Factor in Natural Selection in. R. E. C. Stearns, xvi 856 Genealogy of. L. F. Ward xiv 829 How, behave. Asa Gray i 502 of Europe and Northeastern United States, Geographical Distribution of Indigenous. J. F. James xix 563 Power of Movement in. C. Darwin xviii 845 Polar Sea, Atmospheric Theory of the Open. W. W. Wheildon iii 778 Polaris, Expedition of the. C. H. Davis xii 247 Political Eloquence in Greece. L. Biedif xix 564 Leaders, French. E. King. German. H. Tuttle ix 371 Political Economy. William Roscher xv 278 Essays on. Frederic Bastiat xi 244 First Steps in. J. Alden xv 418 Guide to the Study of. Luigi Cossa xviii 848 in Europe, History of. J. A. Blanqui xvii 273 Theory of. W. S. Jevons xvi 699 Politics as a Science. C. Reemelin viii 376 Polytechnic Review, The ix 116 Popular Lectures on Scientific Subjects. H. Helmholtz iii 513 Positive Philosophy and Religion, An Epitome of the xii 633 Positivism, Ethics of. G. Barzellotti xiii 629 INDEX OF VOLUMES I TO XX. 151 VOL. PAGE Pottery; Flow made, its Shape and Decoration. With Bibliography. G. W. Nichols xiii 248 Manufacturing of, among Savage Kaces. 0. F. Hartt viii 499 Pueblo. F. W. Putnam xix 122 Poughkeepsie Society of Natural Science, Proceedings of xi 376 Preadaraites. Alexander Winchell xvii 410 Prehistoric Man. Daniel Wilson ix 500 Paces of the United. States. J. W. Forster in 646 Kemains at Cincinnati. R. Clarke x 376 Princeton Review xiii 117 Printing for the Blind vii 751 Problem of Problems. President Braden xi 629 The Great. John R. Leifchild ii 245 Proceedings at the Inauguration of the Building for Arts and Science, University of Pennsylvania ii 378 Progress and Poverty. Henry George xvi 702 ; xviii 564 Projecting, The Art of. A. E. Dolbear x 756 Projection-Drawing, Elementary. Edward Warren xviii 704 Property, Law of Intellectual. E. S. Drone xiv 679 Primitive. E. de Laveleye xiii 249 Prospector's Manual, The. W. J. Schofield viii 757 Protoplasm Theory, The. E. Curtis vi 632 Psychological and Medico-Legal Journal. W. A. Hammond v 752 Psychology, Comparative. John Bascom xiii 504 English. Th. Ribot iv 751 of Cognition, Elements of the. R. Jardine vi 627 Psycho-Physiological Sciences and their Assailants xiii 502 Public Health, Migrants and Sailors and the vii 119 -School Question ix 503 Publishers' Trade-List Annual xviii 704 Q Qualitative Analysis, Lecture Notes on. H. B. Hill vi 249 Quarterly German Magazine. Carl Habel ii 377 Quaternions, Elements of. A. S. Hardy xx 708 Questioning, Art of. J. G. Fitch xv 47. 7 K Rabbit, Subcutaneous Injection of Human Saliva in the. G. M. Stern- borg xx 132 Races of Men and their Geographical Distribution x 241 Radical Club of Boston. Edited by Mrs. J. T. Sargent xix 272 Review, The. Edited by B. R. Tucker xi 375 Railroads and Telegraphs. F. H. Giddings xix 418 Railway and Public and Private Interests. S. Sterne xiv 401 Ranthorpe. G. H. Lewes xix 857 Reading as a Fine Art. A. L. Alger xv 274 The Best. F. B. Perkins xi 373 Reign of God not the Reign of Law. T. S. Bacon xv 131 Religion and Science. J. Le Conte iv 502 History of the Conflict between. J. W. Draper vi 371 152 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Religion and Science in their Relation to Philosophy. 0. W. Shields. . . viii 118 as affected by Modern Materialism. J. Martineau vi 625 Introduction to the Philosophy of. John Oaird xvii 414 of Evolution. M. J. Savage x 373 Three Essays on. J. S. Mill vi 626 Religions, Childhood of. Edward Clodd ix 372 Oriental — China. Samuel Johnson xi 625 The Sympathy of. T. W. Higginson ix 375 Religious Belief, Analysis of. Viscount Amberly xi 374 Feeling, The. N. Smyth xii 505 Reproductive Function in Man and the Lower Animals. B. G. "Wilder. . x 245 Reptiles, New Characters of Mosasauroid. O. C. Marsh xvii 566 Republic, A True. Albert Stickney xviii 129 Republik, Die Hundertjakrige. Von J. H. Becker ix 371 Resources, Our Wasted. William Hargreaves viii 500 Responsibility, Legal, in Old Age. George M. Beard iv 757 Retribution, History of Opinions on Scripture Doctrine of. E. Beecher. xiii 115 Revenue System, Our, and Civil Service. S. Sterne xiv 6S4 Revolution, The French. H. A. Taine xx 560 Rhizopods, Fresh- Water. R. Hitchcock xx 133 Rights, Law of Personal. A. J. Willard xx 701 Roads, Streets, and Pavements, A Practical Treatise on. Q. A. Gillmore. ix 375 Rocks, Guide to the Determination of. E. Jannettas xii 753 Roman Catholicism in the United States xv 852 Empire, The Holy. James Bryce xii 111 Romances of the Middle Ages, Popular. Sir George W. Cox, and E. n. Jones xvi 853 Rome, Through, on. N. R. Waters xii 370 Rosicrucians. H. Jennings xvi 423 Rugby, Tennessee. Thomas Hughes xx 134 Rumford, Count, Memoir of. George Ellis ix 246 Complete Works of ix 246 Rural Life, Moore's. Edited by D. D. T. Moore xv 417 Russia. D. M. Wallace xi 117 Rutherford, Autobiography of Mark. Edited by R. Shapcott xx 707 s Sandstone of Ohio, The Berea. Edward Orton xvi 709 Sanitarian, The. Edited by A. N. Bell iii 650 Sanitary Condition of City and Country Houses. G. E. Waring, Jr. ... xii 505 Engineering. Baldwin Latham iii 772 Engineering, American. E. S. Philbrick xix 125 Examination of Water, Air, and Food. C. B. Fox xiv 681 Journal, The. Edited by E. Playter vii 754 Science, Future of. B. W. Richardson xiii 505 Science, Recent Progress in. A. R. Leeds xi 760 Sanskrit and its Kindred Literatures. L. E. Poor xviii 849 Savings-Banks. J. P. Townsend xii 374 Schiller's Complete Works. Edited by C. J. Hempel xvii 704 Science and Industry, AnnualRecord of. S. F. Baird. . v 249; ix 502 ; xi 761 ; xiii 628 INDEX OF VOLUMES I TO XX. 153 VOL. PAGE Science and Industry, Western Review of (Monthly) xi 370 and Religion. Alexander Winchell xi 498 and Theology, Master-Key to Mysteries of Ancient and Modern. H. P. Blavatsky xi 504 ; xiii 369 Borderland of. R. A. Proctor v 123 Byways. R. A. Proctor viii 037 Easy Lessons in Popular. J. Monteith xvi 133 Essential Piety of Modern. J. W. Chadwick x 630 Fragments of. John Tyndall x 021 Halt-Hour Recreations in Popular viii 377 Lectures at South Kensington x 625; xi 504 ; xii 757; xvi 133 News. Edited by E. Ingersoll and W. C. Wickoff xiv 540 Observer (Monthly) xiv 542 One Year of. Tribune Publication vi 120 Philosophy, and Morals, Recent Discussions in. Herbert Spencer. . ii 505 Primers : Chemistry, by Professor Roscoe ; Physics, by Balfour Stew- art i 371 Primers : Introductory. T. H. Huxley xvii 275 Principles of. W. S. Jevons v 116, 378 Teaching, Guides for xvi 855 to Modern Life, Relations of. H. C. Potter xviii 705 Transactions of the Kansas Academy of. Vol. iv ix 504 Warfare of. A. D. White ix 370 Scientific Course of Study. C. E. Bessey : xii 373 Lectures. Sir John Lubbock xvi 133 Memoirs. J. W. Draper xiv 113 ; xv 132 Monthly, The. E. H. Fitch viii 637 Research, Endowment of. George Davidson xix 420 Society, Papers read before Pi Eta, of Rensselaer Polytechnic In- stitute . xvi 422 Subjects, Popular Lectures on. H. Helmholtz xix 269 Terms, Dictionary of. William Rossiter xvi 564 Scientist, The Home. Monthly Journal ix 116 The Young. Monthly xii 756 School Commissioners, Annual Report of, of Milwaukee vii 376 of Life. W. R. Alger xix 563 Schools, High. B. G. Northrop xviii 849 Higher, and Universities in Germany. Matthew Arnold v 373 of Ontario, Report of the (1877) xv 421 Scripture Speculations. H. R. Stevens viii 244 Sea-Air and Sea-Bathing. J. H. Packard xvii 702 Depths of. C. Wyville Thomson iii 122 -Mosses. A. B. Hervey xx 419 -Sickness. George M. Beard xvii 564 Seashore, Life on the. J. H. Emerton xviii 133 Sensation and Pain. C. F. Taylor xx 849 Senses, Evidence of the. W. G. Stevenson xvi 131 of Man, The Five. J.Bernstein. (International Scientific Series.). . ix 758 Sermons, Scotch xviii 559 Serpent and Siva Worship. H. Clarke and C. S. Wake xii 373 Sewer-Air, Chemical Examinations of. W. R. Nichols xv 419 i54 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Sewer-Gas and its Dangers. G. P. Brown xix 858 -Gases. A. De Varona xv 274 Sex in Education. E. H. Clarke iv 377 Sexes throughout Nature. A. B. Blackwell vii 370 Shade-Trees, Indigenous Shrubs, and Vines. T. Stewart xi 504 Ship of Fools. Translated by Alexander Barclay v 752 Ships, Free. John Codman xvii 127 Sight. Joseph Le Conte xix 272 Signal Officer, Annual Eeport of the Chief (1879) xx 416 Sign-Language of North American Indians. G. Mallery xvii 566 Silk Goods of America. W. C. Wykoff xvi 419 Silk-Worm, The. C. V. Riley xvi 423 Silver Country, The. A. D. Anderson xii 753 in its Relation to Industry and Trade. William Brown xvii 567 Singing, The Art of. F. Sieber xv 420 Skin, Diseases of the. L. A. Duhring xi 119 in Health and Disease. L. D. Bulkley xviii 420 Smith, Adam. J. A. Farrer xix 122 Gerrit. O. B. Frothingham xii 634 Smithson, James, and his Bequest. Scientific Writings of. W. J. Rhees. xviii 848 Smithsonian Miscellaneous Collections. F. W. Clarke v 499 Reports v 501 ; viii 240 ; xi 375 ; xii 505 ; xiv 683 ; xx 417 Social Science, Basis of. R. J. Wright x 622 Present Status of. R. S. Hamilton v 122 Ancient. L. H. Morgan xi 758 Sociology, Descriptive. Herbert Spencer iii 517 ; iv 504 ; viii 752 Principles of. Herbert Spencer vi 372 ; vii 491 ; xi, 112, 247 Solar Light and Heat, The Source and Supply of: Z. Allen xvi 567 Physics, Contributions to. J. N. Lockyer v 120 System, Certain Harmonies of the. S. Alexander vii 624 Solubility, Contributions to the Theory of. I. Walz vii 754 Soluble Glass, Practical Treatise on. L. Feuchtwanger viii 500 Songs of Great Poets xiv 401 Sorghum and Corn-stalks, Work done on, by the Department of Agri- culture. P. Collier xx 131 Soul, The, and the Resurrection. J. II. Kellogg xiv 29 Problems, etc. J. E. Peck viii 756 Sound. A.M.Mayer. (Experimental Science Series.) xiii 503 ; xiv 115 and its Relation to Music. P. Blaserna x 240 Elementary Lessons in. W. H. Stone xvi 852 South Missouri State Normal School, Catalogue of. J. Johonnot v 636 Species, The Human. A. De Quatrefages. (International Scientific Series.) xv 560 Spectra observed near the Solar Limb, Fugitive. M. L. Trouvelot. . . . xvii 700 Spectroscope, Assaying by the v 758 Spectrum Analysis. J. N. Lockyex. (International Scientific Series.), xiii 244 Schellen i 242 ; ii 116 Speech, How to tell the Parts of. E. A. Abbott xix 419 Spelling Reform, The xx 417 Spencer, The Philosophy of. B. P. Browne v 248 Spinoza, Ethics of x 244 INDEX OF VOLUMES I TO XX. 155 VOL. PAGE Spiritualism, Philosophy of, and Treatment of Mediomania. F. R. Marvin, v 751 Scientific Basis of. Epes Sargent xviii 564 Startling Facts in Modern. N. B. Wolfe viii 757 Sportsman's Gazetteer and General Guide. 0. Hallock xv 708 Starches, A Study of some of the. L. R. Stowell xvii 565 Stargazing. J. N. Lockyer xiii 244 Stars, Hand-book of Double- xvii 416 Statistical Review, The American xv 422 Steam, Elementary Treatise on. J. Perry vi 631 -Engine, History of the Growth of the. R. H.Thurston. (Interna- tional Scientific Series.) xiii 749 -Engine, Proportions of the. W. D. Marks xiv 400 -Engineering, New Treatise on. J. W. Nystroin xii 504 St. Louis Academy of Science, Address before (1877). C. V. Riley xi 118 Public Schools, Report iii 518 ; viii 119 ; x 375 Stock-Breeding. M. Miles xiv 398 Stoics, The Reign of the. F. M. Holland xv 563 Stone Age, Past and Present. E. B. Tylor iv 755 Storms, their Nature and Laws, and Means of predicting. William Blasius. vii 501 Style, Literary, and other Essays. William Mathews xix 560 Substantialism, Summary of. Jean Story xviii 706 Sugar Analysis. J. H. Tucker , xx 564 -Beet in North Carolina. A. R. Ledoux xiii 375 Suicide. J. J. O'Dea xx 704 Henry Morselli. (International Scientific Series.) xx 275 Summer-Land Sketches. F. L. Oswald xviii 274 Sun and Certain Fixed Stars, Relative Ages of the. D. Kirkwood xii 113 My Visit to the. L. S. Benson v 378 Sunshine and Storm in the East. Mrs. Brassey xvii 278 Sun-Spots, Observations of, at Anclam. G. Spoerer vi 752 Sun, The. C. A. Young. (International Scientific Series.) xix 852 Superstition in all Ages. J. Meslier xiv 241 Superstitions, Origin of Primitive. R. M. Dorman xx 851 Surgery, Antiseptic. J. Lucas-Championniere xx 851 Hysterical Element in Orthopaedic. N. M. Shaffer xx 132 Survey, Annual Report of the Lake (1879) xvii 849 of Northern and Northwestern Lakes and the Mississippi River . . . xiv 542 Report of Superintendent of the United States Coast. W. Ferrel. xix 419 Surveying, Coordinate. H. F. Walling xi 629 Method of Government. S. V. Clevenger v 123 Surveys and Explorations west of 100th Meridian, Annual Report on. G. M. Wheeler vii 119 Topographical, and the Public Health. J. T. Gardner xi 376 Symbolical Language of Ancient Art and Mythology. R. P. Knight. . . . xi 374 Symbolism, Ancient and Modern. Thomas Inman xi 119 T Tariff, Action of the United States. A. Tylor xvii 127 Taxidermist's Manual. Thomas Brown viii 756 ; xvii 699 Teacher, The. J. R. Blakiston xv 278 Teacher's Hand-book. W. F. Phelps viii 634 156 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Teachers, Manuals for (No. 1, Cultivation of the Senses) xv 710 Teaching of Chemistry and Physics in the United States, Report of. F. "W. Clarke xx 411 Principles and Practice of. James Johonnot xiii 501 Technics, Physical. J. Frick xiii G30 Technicological Dictionary, Tollhausen's x 621 Technology, Chemical. Eudolf Wagner ii 244 Teeth, Causes of Irregularities in the Development of. N. W. Kingsley viii 378 Familiar Lectures about the. II. S. Chase vii 243 Telegraph, Henry's Contribution to the Electro-Magnetic. W. B. Taylor xvii 272 in America. J. D. Reid xiv 541 Telephone, Sound and the. C. J. Blake xiv 116 Telescope, The. Thomas Nolan xix 271 Telescope, Celestial Objects for Common. T. W. Webb xx 708 Temperaments, The. D. H. Jacques xv 564 Testament, The Old, in the Jewish Church. W. R. Smith xix 413 Textile Colorist, The (Monthly). Edited by 0. O'Neill x 507 Record of America. Edited by Lorin Blodget xviii 276 Theology and Mythology. A. H. O'Donoghue xvi 853 Natural. John Bascom xix 121 Theosophist, The. Edited by H. P. Blavatsky xvii 130 Therapeutics and Materia Medica. C. E. A. Semple xvii 133 First Lines in. Alexander Harvey xvi 281 Thermal Energy, Difference of, transmitted to the Earth from Different Parts of the Sun viii 499 Thermometry, Family. E. Seguin ii 627 Thinkers, Modern. Van Buren Denslow xviii 562 Thousand Islands of the St. Lawrence. Edited by F. B. Hough xvii 850 Thoughts for the Times. H. R. Haweis ii 248 Throat, The, and its Functions. L. Elsberg xvii 565 and Nose, Diseases of the. M. Mackenzie xviii 276 Tide-Tables for the Atlantic and Pacific Coast of the United States (1881). xix 126 Tillage, Intercultural. E. L. Sturtevant xiii 376 Tin in Burmah, Siam, and Malacca. E. Reyer xvii 704 Tokio, Calendar of the University of , xx 852 Geology of the Environs of. D. Brauns xx 854 Memoirs Scientific Department University of. T. C. Mendenhall. xviii 276 Memoirs Scientific Department University of. E. S. Morse xvi 566 Memoirs Scientific Department University of. C. Netto xvii 851 Topographical Atlas Sheets xi 630 Survey of New York, Uses of a. J. I. Gardner ix 375 Tornadoes, The Wisconsin, of 1878. W. W. Daniells xv 421 Training, Deductive and Inductive. B. Silliman ii 504 Trance and Traneoidal States in the Lower Animals. George M. Beard xix 416 Transcendentalism. Joseph Cook xii 634 in New England. O. B. Frothingham ix 627 Transit of Venus. R. A. Proctor vii 491 Trees in Winter, Our. J. Robinson xix 419 Tribes of California. S. Power xiv 244 Trichinosis, A Report on. George Sutton viii 377 INDEX OF VOLUMES I TO XX. 157 VOL. PAGE Tromso, Museum Society of xvii 704 Tropical Nature, and other Essays. A. R. Wallace xiii 373 Tropics, Through and through the. F. Vincent ix 248 Turkey. James Baker xi 500 Races of European. E. L. Clark xiv 683 Turks, History of the Ottoman. Sir E. S. Creasy xii 371 Two-Ocean Water ; Union of the Atlantic and Pacific in the Rocky Moun- tains. T. B. Comstock xii 372 Tyndall's Belfast Address vi 121 u Units and Physical Constants. J. D. Everett xvi 566 Unity in Nature. C. B. Radcliff xiii 114 Unity of Natural Phenomena. Emile Saigey iii 772 Universities, American State. A. Ten Brook viii 119 University of Cincinnati, Catalogue of xi 502 Unseen Universe, The vii 244, 492 World, The, and other Essays. John Fiske ix 112 Uranian raid Neptunian Systems. Simon Newcomb viii 635 Uranometria of the Southern Heavens. B. A. Gould xx 700 Urine, Analysis of the. K. B. Hofmann xv 849 Urinary Organs, Diseases of. W. S. Gouley iii 121 Utah, Geology of the High Plateaus of. C. E. Dutton xviii 844 Mountains, Geology of the Eastern Portion of the. J. W. Powell. . xi 628 United States, History of the. J. A. Doyle ix 371 V Vaccination. W. C. Chapman x 629 General. E. Harris xiv 682 Van Nostrand's Eclectic English Magazine iii 122 Practical Science Series xiv 684 Ventilation, Mechanics of. G. W. Rafter xiii 118 New System of. H. A. Gouge xx 708 Venus, Transit of. George Forbes vi 121 Verbalist, The. A. Ayres xx 708 Vertebrata of the Eocene of New Mexico vii 376 Vertebrates of Northern United States. D. S. Jordan., ix 504; x 243; xiii 631 Vibration, The Nature of, in Extended Media, and Polarization of Sound. S. W. Robinson xix 421 Vice, State Regulation of. A. M. Powell xiii 504 Village Communities. Sir Henry S. Maine ix 629 Vocal Physiology and Hygiene. G. Holmes xvii 133 Voice and Ear, Mysteries of the. O. N. Rood ii 751 in Singing, The. in Speaking, The. Translated from the German by Emma Seiler vi 631 Medical Hints on the Production and Management of the Singing. L. Browne xix 119 Volcanoes. J. W. Judd. (International Scientific Series.) xx 129 Voltaire, Life of. James Parton xix 707 Vowel Theories. Alexander G. Bell xvi 856 11 158 THE POPULAR SCIENCE MONTHLY. VOL. PAGE w Wages Question, The. F. A. Walker ix 501 Wagner, Eichard. Art-Life and Theories of. E. L. Burlingame vii 497 Walls, Submerged Eetaining. J. S. Tate iv 756 Wanderings in South America, etc. C. Waterton xiv 827 Water Analysis for Sanitary Furposes. E. Erankland xvii 701 -Color Painting. A. Penley xvii 134 Department of Philadelphia, Annual Eeport of (1880) xix 564 Drinking, Guide to Microscopical Examination of. J. D. Macdonald viii 756 Filtration of Potahle. W. R. Nichols xiv 399 Forms of. By John Tyndall i 245 -Supply, Columbia, Missouri. P. Schweitzer viii 757 -Wheels and Machinery. James Emerson xv 274 Watering-Places of Germany. E. Gutmann xvii 415 Wax-Flower Modeling. F. I. Duncan xi 502 Wheeler's Survey of the Territories. Reports of G. K. Gilbert, E. E. How- ell, and A. R. Marvine ix 503 Weighing and Measuring. H. W. Chisholm xii 144 Weights, Measures, and Money of all Nations. F. W. Clarke viii 758 Whewell, William. J. Todhunter ix 372 White Mountains, Map of the xii 755 Wild-Flowers, British, and Insects. Sir John Lubbock vii 623 Wilderness-Cure, The. M. Cook xix 858 Wilderness, In the. C. D. Warner xiv 116 Winds of Doctrine. Charles Elam x 502 Wisconsin Academy of Science, Arts, and Letters, Transactions of (1875 -'76) : xi 501 Board of Health, Fifth Annual Report of xx 132 Geological Survey for 1879. J. C. Chamberlin xvii 567 Woman, Centennial Situation of. Alexander Bullock x 243 Women, Rest for, during Menstruation. Mary Putnam-Jacobi xii 241 Workshop Appliances. C. P. B. Shelley iv 122 Companion, The xvi 855 World, A Ramble round the. M. Le Baron de Iltibner vi 630 Childhood of the. Edward Clodd iii 249 Statistics of the. A. J. Schem iv 631 World's Progress, The. G. P. Putnam xii 371 Worlds, Two, are ours. Rev. Hugh Macmillan xviii 129 Wright, Letters of Chauncey. J. B. Thayer xii 750 Y Yale Observatory, First Annual Report of norological and Thermometric Bureaus of. L. Waldo xx 416 Yucca-Borer, Notes on the. C. V. Riley ix 375 z Zapus IIudosium.) i 499 ; ii 20 The Soul and. F. Harrison i 237, 309 G Galileo, Bruno and iii HI Gardner, P. The Greek Mind in Presence of Death ii 265 Gas and Electricity, Illuminating Power of ii 575 Gases, Liquefaction of the ii 465 Genius and Vanity i 213 Geographical Congress, Central Africa and the Brussels. Emile de Lave- leye i 146 Germ-Theory and Spontaneous Generation. Pasteur, Tyndall, Bastian . . i 109 of Disease. H. C. Bastian ii 310 Giotto's Gospel of Labor. Sidney Colvin i 87 Gladstone Fallacies, American Facts and iv 181 W. E. Montenegro i 97 Graham, C. Beer and the Temperance Problem i 257 Gray, Asa. Darwinism i 190 Ground-Water and Zymotic Disease i 384 H Haeckel, Ernst. Evolution Theory, The ii 2S9 Harrison, F. The Soul and Future Life i 237, 309 Hartley, W. N. Ice-Making and Ice-Machines i 373 Harvey, William. T. II. Huxley ii 385 Haweis, H. R. Richard Wagner i 133 Health, Learning and. B. W. Richardson ii 398 Moral and Social Aspects of. J. II. Bridges ii 141 of Ladies, The Little. F. P. Cobbe ii 355 INDEX OF VOLUMES I TO XX. 163 VOL. PAGE ITeathenism and Christianity. E. Zeller i 158 Heat of Summer, Protection against the. " Cool Advice " i 285 Hell and the Divine Veracity. L. A. Tollemache ii 493 Hellas and Civilization. Grant Allen iii 398 Helhvald, F. von. Science, Liherty of ii 458 Hereditary Traits iii 26 Hincks, Sir Francis. Political Destiny of Canada iii 223 Hintons, The. George Peard iii 182 History, A Leaf of Eastern. N. W. Senior i 204 Holyoake, G. J. A New Principle of Industry iii 521 Home, R. H. Soul, Selling the iii 514 Horse, The, in Art and in Nature iv 95 Housekeeping, Cooperative. R. Fisher ... i 517 Howell, George. Improvidence of the Working-Classes iv 72 Hueffer, F. Schopenhauer in a Nutshell i 376 Hunter, W. W. Sun-Spots and Famines ii 128 Huxley, T. H. William Harvey ii 385 Hydrophobia. II. W. Acland ii 338 and Rabies. Sir Thomas Watson ii 218 Period of Incubation in ii 96 Hypnotism. G. J. Romanes iii 573 Ice-Making and Ice-Machines. W. N. Hartley i 373 Iguana, The ii 192 Illuminating Power of Gas and Electric Lights ii 575 Immortality. "The Soul and Future Life." F. Harrison i 237, 309 Improvidence of the Working-Classes. George Howell iv 72 India, Education in iii 95 Industry, A New Principle of. G. J. Holyoake iii 521 Organization of Unremunerative. Edith Simcox iv 156 Industries, Some Queer iv 179 Infant, Biographical Sketch of an. C. Darwin i 345 Innes, A. T. Trial of Jesus Christ i 460 ; ii 61 Inventions, Needed ii 576 Iron-Ores, Nickeliferous i 288 Israel, David, King of. W. Robertson Smith ii 13 Janet, P. Problem of Final Causes and Contemporary Physiology iii 370 Jerusalem, Underground i 379 Jesus Christ, The Trial of. A. T. Innes i 460, ii 61 Jevons, W. S. " Cram." i 18 Mill's Philosophy tested ii 279, 317 ; iii 85 Johnson's Lives. Matthew Arnold iii 281 K Kirghiz, Hunting among the iv 191 Kossuth, Louis. Russian Aggression ii 205 164 THE POPULAR SCIENCE MONTHLY. VOL. PAGE L Labor, Giotto's Gospel of. Sidney Colvin i 87 Ladies, Little Health of. F. P. Cobbe ii 355 Lakes of California, Alkaline and Boracic. J. A. Phillips i 175 Laveleye, Einil de. Central Africa and the Brussels Geographical Con- gress i 146 Lawson, R. Alcoholic Brain Disorders iii 426 Learning and Health. B. W. Richardson ii 398 Liebig's Scientific Achievements. Max von Pettenkofer i 63 Life, A Study of Lower i 450 Conditions of, in Animated Beings. E. Blanchard i 419 Definition of. Claude Bernard ii 511 Meteorites and the Origin of. W. Flight ii 85 Light, Action of, upon the Coloration of the Organic World ii 367 -Waves, Drifting. R. A. Proctor i 315 Lightning, Fear of iii 366 Likeness, Law of, and its Working. A. Wilson ii 551 Littledale, R. F. Christianity and Patriotism i 222 Livingstonia Mission ii 91 Locust, Rocky Mountain, The, as Food iii 192 Lockyer, J. N. Sun-Spots and Famines ii 128 Sun, What the, is made of iii 313 M Magnetism, Animal. W. Preyer iii 131 Mallock, W. H. Faith and Verification iv 1 Positivism on an Island iii 1 Malt-Liquors. J. J. Coleman iv 172 Mammoth, Epoch of the. W. B. Dawkins iii 472 Epoch of the. J. C. Southall iv 68 Man and Science. C. Elam iii 58 of Letters, Memorials of a. John Morley iii 17 Science and. John Tyndall ii 97 Mars, " The Planet of War." i 360 Matter, Genesis of iv 1 65 Men, Weaknesses of Great ii 250 Mental Malady, A New iii 192 Physiology i 167 Meteorites and the Origin of Life. W. Flipht ii 85 Meteorological Observations with Unattended Balloons i 192 Mill's Philosophy tested. W. S. Jevons ii 279, 317 ; iii 85 Montenegro. W. E. Gladstone i 97 Moon, A New Crater in the. R. A. Proctor iii 417 Is the, dead ? i 075 Morality and Decline in Religious Belief. (A Modem Symposium.) . . i 46, 124 Morley, John. Memorials of a Man of Letters iii 17 Morphology. W. K. Parker iii 357 Mott, F. T. Beauty, Evolution of iii 301 Mtiller, Max. Reason, Origin of ii 5:14 Muscles as Machines iii 334 INDEX OF VOLUMES I TO XX. 165 VOL. PAGE Mushroom-Culture in Japan H 95 Myths, Forest and Field. W. R. S. Ralston ii 560 N Nation-Making. Grant Allen iv 121 Natural Philosophy, Teaching of. P. G. Tait ii 340 Nature, The Course of. Simon Newconib iii 481 Nature's Teachings iii 189 Nebular Hypothesis, A Needed Reconstruction of the. C. Du Prel i 369 Nervous System and the Intellect. George Pouchet iii 264 Newcomb, Simon. Nature, The Course of iii 481 Niagara, Waste of Power at i 287 Nicotine-Poisoning ii 96 Nihilism and Pessimism in Germany. C. Waldstein iii 248 Nile, Utilizing the Flood- Water of the ii 384 Nitrogen, Economy of iii 171 Noise, Civilization and. James Sully iv 111 o Obelisk, ^Esthetic Analysis of an. Grant Allen ii 152 One Per Cent. Bonamy Price i 75 P Paget, Sir James. Alcohol Question, The iv 138 Painting, Color in. Grant Allen iv 14 Palgrave, W. G. Malay Life in the Philippines iii 451 Parasites and their Development. A. Wilson iii 552 Parker, W. K. Morphology iii 357 Pasha, Midhat. Turkey, Past, Present, and Future of iii 193 Pasteur, L. Germ-Theory and Spontaneous Generation i 109 Patriotism, Christianity and. R. F. Littledale i 222 Pattison, Mark. Books and Critics ii 159 Paul and Virginia, A Criticism of the New iii 475 Peard, George. Hintons, The iii 182 Perry, W. C. German Universities ii 244 Pessimism, Nihilism and, in Germany. C. Waldstein iii 248 Pettenkofer, Max von. Liebig's Scientific Achievements i 62 Philanthropy, Mischievous iii 469 Philippines, Malay Life in the. W. G. Palgrave iii 451 Phillips, J. A. Alkaline and Boracic Lakes of California i 175 Philosophy, Spread-Eagle iii 128 Physiology, Mental i 167 Problem of Final Causes and. P. Janet iii 370 Plants, Colors of Animals and. A. R. Wallace i 522 ; ii 43 Polar Exploration iii 191 Political Economy as a Moral Science. W. Cunningham iii 320 Judgment, Popular and Aristocratic. {A Modern Symjjosium.). . iii 97, 299 Pollock, F. Spinoza, Benedict de ii 444 Polynesian Races, Dying out of the. Sir D. Wedderburn i 245 Pongo, Mr i 574 1 66 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Positivism on an Island. W. H. Mallock iii 1 Pouchet, George. Nervous System and the Intellect iii 264 Preston, S. T. Universe, Past Changes in the, due to Present Causes. . . iii 349 Preyer, W. Animal Magnetism iii 131 Price, Bonamy. One Per Cent i 75 Proctor, K. A. Betting on Races iv 83 Constellation-Figures, Origin of ii 49 Eclipse, The Approaching Solar iii 288 Light-waves, Drifting i 315 Moon, A New Crater in the iii 417 Pyramids, Mystery of the i 2(34 Sun, The, in his Glory iv 127 Sun's, The, Corona and his Spots iii 542 Property, Primitive, and Modern Socialism iii 432 Pyramids, Mystery of the. E. A. Proctor i 264 E Eadiometer, The, and its Lessons. W. B. Carpenter i 26 Another Lesson from the. W. Crookes i 301 Sir W. Grove on the i 287 Railways, Cost of Mineral Traffic on English. F. E. Conder i 327 Ralston, W. R. S. Myths, Forest and Field ii 560 Realities, Dreams and. Leslie Stephen iii 532 Reason, Origin of. Max Miiller ii 534 Religion, Ethics of. W. Kingdon Clifford i 335 The Proposed Substitutes for. Gold win Smith ii 428 Religions Belief, Morality and Decline in. {A Modern Symposium.) . . i 46, 124 Richardson, B. W. Ether-Drinking and Extra-Alcoholic Intoxication . . iv 31 Learning and Health ii 398 Roman Excavations. G. Boissier i 1 93 Romanes, George J. Hypnotism iii 573 Time, Consciousness of iii 309 Romans, Greatness of the. Goldwin Smith iii 161 Rowley, James. Francis Bacon iii 561 Russia, Secret Societies in. D. M. Wallace i 407 Russian Aggression. Louis Kossuth ii 205 s Schopenhauer in a Nutshell. F. Hueffer i 376 Schultze, F. Origin of the Culinary Art iv 24 Science and Man. John Tyndall ii 97 Liberty of. F. von Hellwald ii 458 Liberty of, in the Modern State. R. Virchow ii 296 Man and. C. Elam iii 58 Theology and, Two Hundred Years ago. C. Sterne ii 179 ATirchow on the Teaching of. W. K. Clifford iii 73 Scott, Sir Walter, and his Dogs i 233 Sea, Algerian Inland ii 96 Sea-Wave, A Mighty ii 171 Senior, N. W. History, A Leaf of Eastern i 204 Shoes, Injurious Effects of Iligh-heeled i 288 INDEX OF VOLUMES I TO XX. 167 VOL. PAGE Siberia, Land Route between China and iv 95 Siberian Natural History [ 575 Simcox, Edith. Organization of Unremunerative Industry iv 156 Skepticism of Believers. Leslie Stephen i 554. Psychological Curiosities of. A. E. Wallace ii 230 Skin, Impervious Coatings on the ii 383 Smith, Goldwin. Aggrandizement, The Policy of i 541 Canada, Political Destiny of. i 1 France, The Ninety Years' Agony of ii 193 Religion, The Proposed Substitutes for ii 428 Romans, Greatness of the iji 101 W. Robertson. Angels, Scriptural Doctrine of i 514 W. Robertson. Bible, The i. 289, 385 W. Robertson. David, King of Israel ii 13 Snake-Incubation ijj 473 Social Science, Observation in. Alexis Delaire ii 1 Socialism in Germany and the United States. H. Fawcett iv 97 Primitive Property and Modern iii 432 Societies, Secret, in Russia. D. M. "Wallace i 407 Soul and Future Life. (A Modern Symposium.) i 499 ; ii 20 and Future Life. F. Harrison i 237, 309 Selling the. R. H. Home iii 514 Sounding Instrument, A New ii 192 Southall, J. C. Epoch of the Mammoth iv 68 Spinoza, Benedict de. F. Pollock ii 444 Spiritualism. Carpenter and Wallace ii 463 Carpenter on. A. R. Wallace i 435 Psychological Curiosities of. W. B. Carpenter ii 111 Spontaneous Generation. H. C. Bastian ii 434 John Tyndall ii 505 Germ-Theory and. Pasteur, Tyndall, and Bastian i 109 " Narrowing the Experimental Issue " i 122 Spots, Sun's Corona and his. R. A. Proctor iii 542 Spottiswoode, William. Inaugural Address before the British Asso- ciation iii 493 Stanley, A. P. Education of After-Life ii 257 Stanley's Discoveries and the Future of Africa ii 408 Stephen, Leslie. Dreams and Realities iii 532 Skepticism of Believers i 554 Sterne, C. Theology and Science Two Hundred Years ago ii 179 Stimulants. J. B. Yeo i 34 Strength of Iron and Steel Plates, Experiments on ii 192 Suez Canal, " a Leaf of Eastern History." N. W. Senior i 204 Sully, James. Civilization and Noise iv 111 Sun, The, in his Glory. R. A. Proctor iv 127 Origin and Age of the. J. Croll i 350 -Spots and Famines. J. N. Lockyer and W. W. Hunter ii 128 What the, is made of. J. N. Lockyer iii 313 Sun's Corona, The, and his Spots. R. A. Proctor iii 542 Surnames, Law of. J. Amphlett iv 65 Symposium, A Modern. Morality and Decline of Religious Belief. . . i 46, 124 168 THE POPULAR SCIENCE MONTHLY. VOL. PAGE Symposium, A Modern. Popular and Aristocratic Political Judgment, iii 97, 299 The Soul and Future Life i 499 ; ii 20 T Tait, P. G. Natural Philosophy, Teaching of. ii 346 Teaching, Art and Practice of iv 169 Temperance Prohlem, Beer and the. 0. Graham i 257 Theology and Science Two Hundred Years ago. C. Sterne ii 179 Things in Themselves. W. Kingdon Clifford ii 422 Thomson, A. Development of the Forms of Animal Life i 481 Time, Consciousness of. George J. Romanes iii 309 Tollemache, L. A. Hell and the Divine Veracity ii 493 Tozer, A. " Bruce," The Manchester Fire-Horse iii 575 Trichinosis, Epidemics of ii 95 Tropical Fallacy, The Great. • J. A. Wilson iii 200 Turkey, The Past, Present, and Future of. Midhat Pasha iii 193 Tylor, E. B. Child, Dr. Ploss on the ii 240 Tyndall, John. Germ-Theory and Spontaneous Generation i 109 Science and Man ii 97 Spontaneous Generation ii 505 u Universe, Past Changes of the, due to Present Causes. S. T. Preston . . iii 349 Universities, German. W. C. Perry ii 244 V Vanity, Genius and i 213 Virchow, R. Science, Liberty of, in the Modern State ii 296 Vital Force i 472 Voice, Curiosities of the i 478 Volcanoes of Iceland ii 95 w "Wager, John. Tame Bears in Sweden ii 479 Wagner, Richard. H. R. Haweis i 133 Waldstein, C. Nihilism and Pessimism in Germany iii 248 Wallace, A. R. Colors of Animals and Plants i 522 ; ii 43 Skepticism, Psychological Curiosities of. ii 230 Spiritualism, Dr. Carpenter on. i 435 D. M. Societies, Secret, in Russia i 407 Wasp, The Prey of the iv 96 Waste Substances ii 574 Watson, Sir Thomas. Hydrophobia and Rabies ii 218 Wave, A Mighty Sea- ii 171 Wedderburn, Sir 1). Dying out of the Polynesian Races i 245 Wife-Torture in England. F. P. Cobbe iii 38 Williams, T. K. Cap— A New England Dog i 306 Willoughby, E. F. Freemasonry : its History and Aims iii 255 Wilson, A. Animals and their Environments iii 231 Animals, Migration of iv 103 IXDEX OF VOLUMES I TO XX. 169 VOL. PAGE "Wilson, A. Ants' Nest, "What I saw in an iv 57 Likeness, The Law of, and its "Working ii 551 Parasites and their Development iii 552 J. A. Tropical Fallacy, The Great iii 200 "Woe, The Livery of. iii 92 "Words, On keeping Silence from Good iii 218 "Working Classes, Improvidence of the. George Howell iv 72 "Worlds, A Ring of ii 468 "Women in Ancient Greece. J. Donaldson iii 328 Y Yeo, J. B. Stimulants i 34 z Zeller, E. Heathenism and Christianity i 158 THE END. SCIEITIFIC PUBLICATIONS. A Treatise on Chemistry. By H. E. Roscoe, F. R. S., and C. Schorlemmer, F. R. S., Professors of Chemistry in the Victoria University, Owens College, Manchester. Illustrated. Vols. I and II— INORGANIC CHEMISTRY. Svo. Vol. I.— Non-Metallic Elements. Price, $5.1)0. Vol. II.— Part I.— Metals. Price, $3.00. Vol. II.— rart II— Metals. Price, $3.00. ORGANIC CHEMISTRY. 8vo. Vol. III. — Part I. — The Chemistry of the Hydrocarbons and their Derivatives. Price. $5.00. 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This solid and comprehensive volume is intended to repre- sent the pre-ent condition of the science in it« main facts and leading principles, as demanded by the systematic chemical student. We have here, probably, the best extant textbook of organic chemistry. Not only is it full and comprehensive and remarkably clear and methodical, but it is up to the very latest moment, and it has been, moreover, prepared in a way to secure the greatest excellences in such a treatise."— The Popular Science Monthly. The Origin of Civilization and the Primitive Condition of Man, Mental and Social Condition of Savages. By Sir John Lubbock, Bart., F. R. S., President of the British Association. With Illustrations. Fourth edition, with numerous Additions. Svo, cloth. Price, §5.00. For sale by all booksellers ; or, sent by mail, post-paid, on receipt of price. D. APPLETON & CO., Publishers, 1, 3, & S Bond Street, New York. IMPORTANT WORKS ON ELECTRICITY. THE MODERN APPLICATIONS OF ELECTRICITY. By E. Hospitalier. Translated and enlarged by Julius Maier, Ph. D. With 170 Illustrations. 8vo. Cloth, $4.50. " M. Hospitalier distinguishes three sources of electricity, namely, the decomposition of metals or other decomposable bodies in acid or alkaline solutions, the transformation of heat into elec- trical energy, and lastly the conversion of work into current — giving rise to the three specific modes of force styled respectively galvanism, thermo-electricity, and dynamic electricity. He gives a history of the progress of each, from the first crude constructions of the pioneer to the latest and most perfect form of battery, thus furnishing the student of science with a sufficiently copious text-book of the subject, while at the same time affording to the electrical engineer a valuable encyclopaedia of his profession. The work presents a most useful and thorough com- pendium of the principles and practice of electrical engineering, written as only an expert can write, to whom tbe abstruse by long study has become simple. The translator has acted the part of an editor also, and has added considerable material of value to tbe original text. His account of the Elison. Fox, and Brush systems of lighting, for example, is more complete than that of M. Hospitalier in his second edition. He has also added full descriptions of the fire-damp indi- cators of Liveling, Sourzee, and Mounier; of Bright's fire alarm and district telegraph, and of Dolbear's telephone, and Kelway's electric log, together with other recent inventions not men- tioned in Hospitalier's treatise, exhaustive and excellent as it is."— New York Times. " To one who wishes to understand the rationale of electric science, and the methods by which the numerous results are accomplished, the work will be welcome."— Chicago Tribune. "The vast advance made within the past few years in electrical science gives great interest to a work as complete and authoritative as the one before us."— Cincinnati Daily Gazette. "A very stimulating and fascinating treatise."— Philadelphia Press. A PHYSICAL TREATISE ON ELECTRICITY AND MAGNETISM. By J. E. H. Gordon, B. A., Assistant Secretary of the British Association. 2 vols., 8vo, with about 200 full-page and other Illustrations. Cloth, $7.00. "There is certainly no book in English— we think there is none in any other language— which covers quite the same ground. It records the most recent advances in the experimental treatment of electrical problems, it describes with minute carefulness the instruments and methods in use in physical laboratories, and is prodigal of beautifully executed diagrams and drawings made to scale."— London Times. "The fundamental point in the whole work is its perfect reflection of all that is best in the modern modes of regarding electric and magnetic forces, and in the modern methods of construct- ing electrical instruments." — Engineering. "Too great praise can not well be given to the description, illustration, and modes of using modern instruments." — Electrician. THE SPEAKING TELEPHONE, ELECTRIC LIGHT, AND OTHER RECENT ELECTRICAL INVENTIONS. By George B. Prescott. New edition, with 200 additional pages, including Illus- trated Description of all of Edison's Inventions. 214 Illustrations. 8vo. Cloth, $4.00. " Mr. Prescott's work on recent electrical inventions beincr American, is naturally largely occu- pied with the results of Mr. Edison's researches and the work of other distinguished Americans, though it is by no meaus limited to the results obtained on the other side of the Atlantic. It is a magnificently illustrated volume, and is the most complete history and discussion of telephones and allied instruments and tbe electric litrht which has come under our notice. It will probably remain a standard work until the progress of discovery haves it behind, for every instrument^ oi which it treats is explained so fully and illustrated so well that there is but lutle room lelt for improvement. For the student and all who have sufficient knowledge or interest in tbe subject, it will be a valuable magazine of information." — WextminUer Peri* w. For sale by all booksellers; or sent by mail, post-paid, on receipt of price. New York: D. APPLETON & CO., 1, 3, & 5 Boud Street. MBL WHOI LIBRARY UH IflV