534 PRIMARY FACTORS OF ORGANIC EVOLUTION. 



Appendicularidae, 87. 

 -Archaesthetism, 505, 513. 

 Archean beds, 83. 

 Archeopteryx, 124. 

 Archipterygium, 91. 

 Archosauria, 114. 



Arcifera, 64, 65, 70, 71, 196, 197, 389. 

 Arctic Region, 52. 

 Argentina, 357. 

 Arietidae, 189. 

 Artemia, 229, 230, 466. 

 Artemia salina, 229 ; A. muelhausenii, 



229. 

 Arthropoda, 80, 81, 82, 83 172, 250, 253, 



268. 269, 368, 369, 389, 391, 404. 

 Articulations, of Arthropoda, 269 ; of 



Vertebrata, 275, 287. 

 Artiodactyla, 69, 132, 133, 150, 195, 248, 



295. 296, 312, 313, 3H, 315. 3i8, 320, 



325, 359. 36o. 36i, 520. 

 Arvicola, 349, 351. 

 Aryan, 159. 

 Asia, 73. 



Aspergillum, 265. 

 Astacus, hand of, 274. 

 Atrophy, of incisor teeth, 356 ; of the 



ulna and fibula, 355. 

 Australia, 72. 

 Australians, 163, 166. 

 Austroriparian, 29. 

 Avian line, 123. 

 Axis, 196, 199. 

 Axolotl, 58. 



Bactrites, 187. 



Baculites, 189, 190. 



Bain, 494. 



Baird, S. F., 47. 



Baker, F. Dr., 469. 



Balcena mysticetus, 353. 



Ball, W. P., 461, 465, 466. 



Barber, M. E., 231, 234. 



Barrande, 185. 



Barrandeoceras, 413. 



Batavia, 168. 



Bather, 192. 

 Bathmic energy, 480. 

 _Bathmism, 449, 479, 484. 

 .Bathmogenesis, 484, 486. 



Bathyergus, 349. 



Batrachia, 87, 88, 89, 91, 94, 95, 97, 98, 



108, 115, 116, 121, 172, 193, 195, 196, 

 218, 253, 363, 364, 365, 368, 372, 388. 



Batrachia, line of the, 108; respira- 

 tion of, 93, 193 ; remains of, no; B. 

 salentia, 8, 63, 69, 70, 314, 389 ; B. uro- 

 dela, 314. 367. 



Batrachidae, 107. 



Baur, G. 115, 366. 



Bear, 21. 



Beauchamp, 500. 



Beard, Dr. 85. 



Beaume, 229. 



Beddard, F. E., 238, 240, 292. 



Beecher, C. E-, 10, 176, 191. 



Bees, 463, 465. 



Belt, 500. 



Berthollet, 483. 



Bioplastology, 192. ~^ 



Blastocerus, 196. 



Blastomeryx, 317. 



Blindness of cave animals, 241. 



Boa constrictor, 122. 



Bo6idea, 328. 



Bos, 144 ; B, taurus, 22, 



Bouchardia, 178, 179. 



Bovidae, 69, 209, 313, 315, 317. 



Brachiopoda, 191. 



Brachiopodus Mollusca, 58. 



Bradypus, 313. 



Bragg, C. L. 244. 



Brain, vertebrate development of 

 94. 



Branchinecta ferox, 230 ; B. media, 

 230 ; B. scheefferii, 230 ; B. spinosa, 

 230. 



Branchiostoma, 86, 92. 



Branco, 188 



Brazil, 462. 



Breeding, 422, 437. 



Brehm, 301. 



Brevicipitidae, 70. 



Brewer, W. H., 422, 426, 430, 431, 435, 



437- 



Bridger, 139. 

 Brinton, 468. 

 British America, 49. 

 Brooks, 86, 454, 459. 

 Brown, A., 189, 190. 

 Brown-Sequard, 430. 

 Brunn, A. von, 403, 446. 

 Buccinum, 260. 



