INDEX 
Acclimatization, 319. Beard, 210, 211, 216. 
Acorn, 24. Beard, J., 435. 
Acracids, 160. Bee, 2, 3, 19, 143, 179, 303, 350, 406, 420, 
Adaptation, definition of, 1. 421, 425, 438. 
Adjustments, individual, 12, Beethoven, 218. 
Agassiz, I, 44, 61. Beetles, 182, 183, 189. 
Agelzeus, 173. Bell-bird, 198. 
Alcohol, 13. Beneden, Van, 441. 
Algze, red, 9. Berbura goat, 208. 
Alkaloids, 13. Biogenetic Law, 71. 
Allen, 173, 307-310, Birds, 6, 407; definition of group, 36; 
Allolobophora, 380. evolution of, 41; instincts of young, 4; 
Alpheus, 344. nest, 4; of paradise, 6; teeth of, 301; 
Ammophila, 5. 
Ammotragus, 208, 
Ampelopsis, 403. 
Amphimixis, 448-449. . 
Amphioxus, 399. 
Ancon race, 315-316. 
Angiostomum, 422. 
Anguillidze, 320. 
Annelids, 19, 20. 
Anolis, 10, 194. 
Ant-eater, 227, 228. 
Antelope, 6, 206, 208, 
.Antitoxin, 14. 
Ants, 141-146, 354, 386, 4097. 
Aphids, 384-386, 419, 426. 
Apus, 418. 
Archzeopteryx, 41, 42, 53, 54+ 
Ardea, 200, 
Argus pheasant, 199. 
Aristolochia Clematitis, 10, 12, 12, 
Arsenic, 13. 
Artemia, 306, 
Ascidians, 417. 
Askenasy, 161. 
Aspalax, 227. 
Asterina, 421-422. 
Autenrieth, 58. 
Baboon, 209. 
Bacteria, 14, 15, 111, 398. 
Baer, Von, 60, 61, 74, 75+ 
Bamboo, 313. 
Barnacles, 417. 
Bartlett, 209, 220. 
Bat, 2. 
Bates, 183, 186. 
Bateson, 273, 278, 453. 
2H 
variation in, 309-312. 
Blind animals, 354. 
Blow-fly, 383. 
Bonellia, 353, 417+ 
Born, 424. 
Bos, 206. 
Boveri, 433. 
Bovide, 207. 
Branchipus, 306. 
Brocadello, 428. 
Brooks, 441. 
Brown-Séquard, 232, 241, 250-257. 
Buffon, 300. 
Bull, 207, 315. 
Biitschli, 441. 
Butterfly, 3, 184, 389. 
Cactus, Io. 
Caffein, 13. 
California salmon, 19. 
Calkins, 443-447. 
Callionymus, I91. 
Calocalanus, 177. 
Cameron, 425. 
Canestrini, 178. 
Canidz, 308. 
Canis, 410. 
Carbonnier, 190, 192 
Cardamine, 335. 
Cardinalis, 173. 
Cardium, 305. 
Cassowary, 202. 
Castle, 148, 321, 435, 438 
Caterpillar, 5, 8, 186. 
Cattle, 411. 
Cats, 209. 
Cercopithecus, 208. 
465 
