INDEX. 



ABERRANT. 



AZORES. 



Aberrant groups, ii. 227. 



Abyssinia, plants of, ii. 167. 



Acclimatisation, i. 173. 



Adoxa, i. 270 



Affinities of extinct species, ii. 106. 



of organic beiugs, ii. 225. 



Agassiz, on Amblyopsis, i. 173. 

 , on groups of species suddenly 



appearing, ii. 88. 



, on propbetic forms, ii. 107. 



, on embryological succession, 



ii. 120. 



, on tbe Glacial period, ii. 151. 



, on embryological characters, 



ii. 210. 

 , on the latest tertiary forms, 



ii. 71. 

 , on parallelism of embryologi- 

 cal development and geological 



succession, ii. 254. 



, Alex., on pedicellarise, i. 297. 



Algse of New Zealand, ii. 164. 

 Alligators, males, fighting, i. 108. 

 Alternate generations, ii. 239. 

 Amblyopsis, blind fish, i. 173. 

 America, North, productions allied 



to those of Europe, ii. 156. 

 , , boulders and glaciers of, 



ii. 159. 

 , South, no modern formations 



on west coast, ii. 61. 

 Ammonites, sudden extinction of, 



ii. 99. 

 Anagallis, sterility of, ii. 4. 

 Analogy of variations, i. 197. 

 Ancylus, ii. 174. 

 Andaman Islands inhabited by a 



toad, ii. 182. 

 Animals, not domesticated from 



being variable, i. 19. 

 , domestic, descended from seve- 

 ral stocks, i, 21. 

 ■ , , acclimatisation o£ i. 



175. 



Animals of Australia, i. 140. 

 ■ with thicker fur in cold cli- 

 mates, i. 166. 



, blind, in caves, i. 172. 



extinct, of Australia, ii. 121. 



Anomma, i. 361. 



Antarctic islands, ancient flora of, 

 ii. 190. 



Antechinus, ii. 219. 



Ants attending aphides, i. 323. 



, slave-making instinct, i. 



336. 



, neuters, structure of, i. 359. 



Apes, not having acquired intel- 

 lectual powers, i. 282. 



Aphides, attended by ants, i. 323 



Aphis, development of, ii. 245. 



Apteryx, i. 218. 



Arab horses, i. 40. 



Aralo-Caspian Sea, ii. 121. 



Archeoptervx, ii. 80. 



Archiac, M. de, on the succession of 

 species, ii. 103. 



Artichoke, Jerusalem, i. 176. 



Ascension, plants of, ii. 178. • 



Asclepias, pollen of, i. 236. 



Asparagus, ii. 143. 



Aspicarpa, ii. 209. 



Asses, striped, i. 198. 



, improved by selection, i. 48. 



Ateuchus, i. 168. 



Aucapitaine, on land-shells, ii. 

 187. 



Audubon, on habits of frigate-bird, 

 i. 222. 



, on variation in birds' nests, i. 



324. 



■ , on heron eating seeds, ii. 176. 



Australia, animals of, i. 140. 



, dogs of, i. 328. 



■ , extinct animals of, ii. 121. 



, European plants in, ii. 163. 



, glaciers of, ii. 159. 



Azara, on flies destroying cattle, i 

 89. 



Azores, flora of, ii. 149. 



