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. 



Artemz'a salzna, 229 ; A. inuelhausenii, 



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, 314, 315, 318, 320, 



325, 359. 36o, 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. 



Baleena ntysticctus, 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. 



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. schcejffcrii) 230 ; B. spinosa^ 

 230. 



Branchiostoma, 86, 92. 



Branco, 188 



Brazil, 462. 



Breeding, 422, 437. 



Brehm, 301. 



Brevicipitidae, 70. 



Brewer, W. H., 422, ^26, 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. 



