LITERATURE. C. Darwin, The Origin of Species by Means of Natural Selection (first edition, London, 1859; sixth edition. 1371) : Descent of Man (New York, 1S72) ; The Variation of Ani mals and Plants Under Domestication (London, 1881) ; A. R. Wallace, Natural Selection (Lon don and New York, 1S70) ; Darwinism, an Ex position of the Theory of Natural Selection with Some of its Applications (London, 1S89) ; Eras mus Darwin, Zoonofnia, or the Laws of Organic Life (London, 1796) ; J. P. B. A. Lamarck, Philo sophic zoologigue (Paris. 1809) ; T. D. Huxley, On the Origin of Species (New' York. 18(i:3) ; Herbert Spencer, Principles of Biology (London, 1898; New York, 1900) : Factors of Organic Evo lution (New York. 1895) ; A. Hyatt. "On the Parallelism Between the Different Stages of Life in the Individual and Those in the Entire Group of the Molluseons Order Tetrabranchiata," in Memoirs Boston Society of Natural History (Boston, 1866) ; Genesis of the Arielidw (Wash ington, 1889) ; l'hyloycny of an Acquired Char acteristic (Philadelphia. 1891) : Fritz Milner, Fur Darwin (Leipzig. 1861 ; English translation, London, 1869) ; 11. Stilller, Fertilization of Flow ers (translated by D'Arcy W. Thompson, Lon don, 1883) ; Nl. \Vaguer, Diu Darwinische Thcorie and dos .1ligrationsgeselz dcr Orgunisnien (Leip zig, 1868; English translation by Laird, London, 1873) ; E. D. Cope, Origin of Genera (Philadel phia, 1868) ; Origin of the Fittest (New York, 1887) ; The Factors of Organic Evolution, (Chi cago, 1896) ; E. Iltutekel, Generale Morphologic (Berlin, 1866) ; History of Creation (New York, 1876) ; Saint G. Nivart, On the Genesis of Species (London and New York, 1870) A. Gray, Darwiniana (New York, 1876) ; .1. Romanes, Darwin and After Darwin (Chicago, 1892-96) ; Physiological Selection (London, 1886) ; Mental Evolution (New York, 1884) ; J. T. Gulick, "On Diversity of Evolution Under One Set of Ex ternal Conditions," in Proceedings Linn•an So ciety of London (London, 1872) ; "Divergent Ev olution Through Cumulative Segregation" (ib., 1887) ; "Intensie Segregation" (ib., 1890) ; "Di vergent EvolutRon and the Darwinian Theory," in American Journal of Science (New Haven, 1890) ; G. IL T. Eimer, Orthogenesis and the Im potence of iVatural Selection in Species Forma tion (Chicago, 1898) ; Organic Evolution (trans lated by J. T. Cunningham, London and New York, 1890) ; C. Lloyd Morgan, Animal Life and Intelligence (London and New York, 1890-91) ; Habit and Instinct ( London and New York, 1896 ) ; IL de Varigny, Experimental Er ulntion (London, 1892) ; C. Dixon, Evolution Without :Vatural
Selection (London, 1885) ; Bateson, Materials for the Study of Variation (London, 1894) ; A. Weismann. Studies on the Theory of Descent (London, 1882) ; Essays upon Heredity (Oxford, 1889) ; Germ Plasm (New York, 1893) H. de Vries, Die Mutationstheorie (Leipzig, 1901.03) ; 0. llertwig, The Biological Problem of To-day (New York, 1894) ; G. Henslow, Tine Origin of Floral Structures Through Insect and Other Agencies (London, 1893) ; The Origin of Plant Structures by Self-Adaptation to the Environ ment (London, 1895) ; H. F. Osborn, From the Greeks to Darwin, an Outline of the Development of the Evolution Idea (New York, 1894) ; A. S. Packard, Lamarck, the Founder of Erolution, His Life and Work (New York and London, 190] ) ; F. \V. Hutton, Darwinism and Lamarck ism, Old and New (London, 1899) ; E. Clodd, Story of Creation (London, 1888) ; Pioneers of Erolution (New York, 1897) ; J. Le Conte, Ev olution and its Relation to Religious Thought (New York, 1888) ; H. W. Conn, Evolution of To-day (New York and London. 1886) ; T. Y. Bergen, Primer of Darwinism (Boston, 1890). Consult also the books and essays of A. Agassiz, .1. A. Allen, E. Askenasy, L. H. Bailey, W. P. Ball, H. W. Bates, F. E. Beddard, C. E. Beeeher, G. Bonnier, T. Boven, W. K. Brooks, S. S. Buck man, Buffon, II. C. Bumpus. E. Catehpool, C. Claus, D. nos. T. A. D. Coekerell, E. G. Conklin, Costantin, J. T. Cunningham. W. H. Dall, C. B. .Davenport, Y. Delage, J. Delbtouf, F. C. Dicey, F. Dreyer, H. Drieseh, A. Dohrn, W. T. T. Dyer, C. H. Eigenmann, C. Emery. Cossar Ewart, E. Fischer, C. L. Flahault, H. Gadow, F. Gallon, P. Geddes, Geoffroy Saint - Ililaire, A. Giard, E. Haase, E. Haecke], S. J. Hickson. J. D. Hooker, G. B. Howes, C. H. Thirst, A. Hyatt, K. Jordan. L. Kathariner, A. Kolliker, A. C. Keeler, A. Lang. E. R. Lankester. J. Lubbock. T. Mee han. R. Meldola, F. Merrifield, T. H. Mor gan, E. S. Morse, AL Neitmayr, C. NUge]i, A. S. Packard, C. Pearson, E. Perrier, E. Pfltiger, NI. C. Piepers, L. Note, E. II. Poulton, A. de Quatrefages, C. I'. Riley, W. Roux, W. E. ]titter, J. A. Ryder, L. Itiltimeyer, ('. Schroder, W. D. Scutt, S. 11. Scudder, G. Seidlitz, H. Simroth, A. Solokowsky..1. W. Spengel, .NI. Standfuss, G. Tor nier, (1. R. Treviranus, Verlot, II. NI. Vernon, AL Verworn, S. 11. Vines, W. 'Waage'', L. F. Ward, It'1. Warming, II'. V. It. Weldon, J. L. Wortman, Wolff, and others.