534 PRIMARY FACTORS OF ORGANIC EVOLUTION. 



Appendicularidae, 87. 



Archassthetism, 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, ■Z2g ; A. iitui-Uiaiiscnii, 



229. 

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



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

 Articufations, of Arthropoda, 269; of 



Vertebrata, 275, 287. 

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



295i 296, 312, 313. 314, 315. 318, 320, 



325. 359. 360, 361, 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. 



BaltFtia titysticctus, 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, 8g, 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. 

 saleniia, 8, 63, 6g, 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, igi. 



Bees, 463, 465. 



Belt, 500. 



Berthollet, 483. 



Bioplastology, 192. 



Blastocerus, 196. 



Blastomeryx, 317. 



Blindness of cave animals, 241. 



Boa constrictor, 122. 



Booidea, 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 fcrox, 230; B. media, 

 230; B. schcefferii, 230; B. sfinosa, 

 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- Scquard, 430. 

 Brunn, A. von, 403, 446. 

 Buccinum, 260. 



