INDEX 



431 



asexual reproduction, in Obelia, 



119. 

 ,, inPandorina, 



89. 



Aspidium, Figs. 48, 50. 

 asters, in mitosis, 71. 

 atavism, 261, 262. 

 attraction of gametes, 143. 



,, ,, in Coccidium, 



141, 142. 



,, ,, ,, in ferns and 

 mosses, 141, 

 142. 

 in Spirogyra, 



142. 



sexes, 125127. 

 ,, sphere, 71. 

 Aucuba, male and female plants, 



111. 



Aurelia, meristic variation in, 149. 

 Australia, fauna and flora of, 250, 



328, 329, 331. 

 Australian climate, adaptation to, 



280. 



automatism, 19. 

 Avebury, Lord, 281. 

 average adaptation, 184. 

 axial filament, of spermatozoon, 140. 

 Axoniderma mirabile, Fig. 168. 



B. 



BABIRTJSA, tusks, 406, Fig. 185. 

 baboons, Buffon on, 367, 368. 

 Bacillus saccobranchi, 66, Fig. 27. 

 Bacteria, 217, 218, Fig. 83. 



,, alleged spontaneous genera- 

 tion, 215. 



,, origin, 219. 



,, structure, 66, Fig. 27. 

 Badhamia, Fig. 29. 

 Bakewell, 387. 



liahvna mysticetus, 245, Fig. 101. 

 Balsenidse, teeth, 260. 

 barnacles, degeneration, 401. 

 barriers to migration, 320. 

 basal cell, 48. 

 bast, 65. 



Bates, II. W., 346. 

 Batesian mimicry, 346. 

 Bateson, W., 195, 205, 207, 208. 

 bats, 301. 

 ,, dispersal, 323. 

 ,, wings, 236, 243, Fig. 99. 

 battle, Charles Darwin on law of, 388. 

 ,, Erasmus Darwin on law of, 373. 

 beech, evergreen, 329. 



beech, seedling, 281, Fig. 133. 

 bees, alleged spontaneous genera- 

 tion, 214, 215, 343. 

 ,, as pollen carriers, 354, 355, &c. 

 ,, parthenogenesis, 144. 

 ,, proboscis, 354, Fig. 179. 

 beetles, mutation in, 159. 

 Behring Strait, former land connec- 

 tion, 309. 

 ,, ,, former mild climate 



328. 



Bell, 340. 



Biff en, E. H., 205. 

 binomial nomenclature, 226. 

 biogenesis, 216. 

 biogenetic law, 265. 

 Biology, origin of name, 373. 



,, science of, 1. 

 Biophoridse, 219. 

 biophors, 22, 66, 168, 219. 

 birds, compared with reptiles, 305. 

 dispersal, 323, 324. 

 egg, 140, Fig. 70. 

 evolution, 306, 307. 

 geological range, 284. 

 limbs, 235. 

 origin, 299, 300. 

 wing, 243, 244, Fig. 99. 

 blackberries, white, 204. 

 blastoccel, 47. 

 blastoderm, 270. 

 blastogenic characters, 176. 



,, ,, inheritance, 



169. 

 ,, ,, origin, 159, 



160. 



,, variations, 149, 157 160. 



blastomeres, 45, 79. 

 blastopore, 47, 265, 269. 

 blastosphere, 45, 265. 

 blastostyles, 120. 

 blastula, 45, 265. 



,, interpretation, 279. 



of Amphioxus, 45, 47, 



Fig. 13. 



of frog, 268, Fig. 119. 

 of Hydra, 118, Fig. 59. 

 blind worm, 250, Fig. 105. 

 blood, 51, Fig. 15. 

 blue Andalnsian fowls, 200, 201. 

 boa constrictor, dispersal, 325. 

 Bodo, life-history, 85-87, Fig. 38. 

 body cavity, 48, 124. 

 body wall, 124. 

 Bombus terrestris, robbing clover, 



355, 356. 

 bone, 57. 



