INDEX 



Abiogenesis, 12 



Abraxas, 438, 452 



Acquired characters, inheritance of, 19, 

 20, 273; discussion by E. G. Conklin, 

 330-36; lack of evidence for, 332, 

 ;i^^; misunderstandings concerning, 

 323-30; other side of the question, 

 336-38; statement of the problem, 

 323, 331-32 



Adaptation, 11, 30, 188-205; classi- 

 fication of adaptations, 195, 196; 

 Osborn's laws of, 192-95 



Adaptive radiation, law of, (194, 195 



Agassiz, L., 144, 145 

 Aggressive resemblance, 201 

 Albinos, different kinds, of, 431, 432 

 Allelomorphic, characters in heredity, 



433 

 Allen7l2. J., 209 

 Alluring coloration, 201 

 Ameghino, F., 86 

 Amphioxus, 178 

 Amphisbaenidae, 119 



Analogous, versus homologous struc- 

 tures, 136 



Anaxagoras, 12 



Anaximander, 11 



Anaximenes, 11, 12 



Ancestral inheritance, Galton's law of, 



371, 372 

 Anti-lens serum, Guyer's experiments 



with, 33 S-45 



Antirrhinum, 446 



Apartness of the germ plasm, 31, 295, 



296, 337 

 Apotetix, 448 



Appendix vermiformis, in man and 

 apes, 154, 155 



Apteryx auslralis, 142, 143 



Aquinas, Thomas, 8, 15 



Archaesthetism, 35 



Aristotle, 13, 14, 18 



Arithmetical mean, 367 



Armadillo quadruplets: and classifica- 

 tion, 122, 123; and sex-determina- 

 tion, 451 



Armadillos, 97 

 Artificial selection, 25, 26 

 Aspergillus tiiger, 327 

 Atavism, 13 

 Atropa, 393 

 Augusthie, 8, 15 

 Azores, fauna of, 103 



Babcock, E. B., 287, 307-22, 363, 364, 



401-12 



Bacon, F., 15, 276 



Balanoglossus, 177, 178 



Bascanion anlhonyi, 117 



Bat, wing of, 134 



Bateson, W., 7, 43, 346, 368, 369, 380, 



393, 396, 414, 446 

 Bathmism, 35 

 Bauer, E., 335 



"Beagle," Darwin's voyage on the, 23, 



25, 26 



Beebe, W., 316, 317 



Beeton, M., 485, 489, 491 



Begonia, 337, 338 



Bell, A. G., 474, 491 



Bembidiiun, 109 



Bequerel, A. H., 275 .—--^ 



Bergson, H., 34 



Bermudas, fauna of, 103-5 



Bibliography, 510-13 



Biffen, R. H., 394 



Bimodal and multimodal curves, 368, 



369 _ 



Biometr>-: discussion of, 365-75; rise 

 and vogue of, 38, 39 



Birds: rudimentary teeth of, 181; 

 wing of, 134 



Birgus latro, 138, 139, 140 



Bison antiquus, 85 



Blakeslee, A. F., 417 



Blastoderm, 166 



Blastula, 166 



Blends, in heredity, 416-18 



Blood-transfusion tests, evidences from 

 Oo, 124-28 



Bonnet, R., 16 



SIS 



