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, 

 333; misunderstandings concerning, 

 323-30; other side of the question, 

 336-38; statement of the problem, 

 323, 331-32 



Adaptation, u, 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 



Allen, E. J., 209 

 Alluring coloration, 201 

 Ameghino, F., 86 

 Amphioxus, 178 

 Amphisbaenidae, 119 



Analogous, versus homologous struc- 

 tures, 136 



Anaxagoras, 12 

 Anaximander, n 

 Anaximenes, n, 12 



Ancestral inheritance, Galton's law of, 

 371,372 



Anti-lens serum, Guyer's experiments 

 with, 338-45 



Antirrhinum, 446 



Apartness of the germ plasm, 31, 295, 

 296, 337 



Apotetix, 448 



Appendix vermiformis, in man and 

 apes, 154, i55 



Apteryx australis, 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 niger, 327 

 Atavism, 13 

 Atropa, 393 

 Augustine, 8, 15 

 Azores, fauna of, 103 



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



401-12 



Bacon, F., 15, 276 

 Balanoglpssus, 177, 178 

 Bascanion anthonyi, 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 



Bembidium, 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 



Biometry: 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 

 60, 124-28 



Bonnet, R., 16 



