INDEX 



Aberrant groups, 387. 



AbvKsinin, plants of, 3-18. 



Acclimatization, 111. 



Atloxa, 12i). 



Affinities of extinct species, 307. 



of organic beings, 3S6. 

 Agassiz, on Amblj'opsis, 113. 



on groups of species suddenly ap- 

 peiiriiiLT, 2'M. 



on enibry<il()L'ical succession, 316. 



on the (ilaci;il period, 837. 



ou cnibrvological characters, 378. 



on the lalep't tertiary forms, 2S2. 



ou parallelism of embryological de- 

 velopment and geological bucccs- 

 sion, 534. 

 AIotj of Kew Zealand. 3-1.5. 

 Alligators, males. fii:li!iii'_', 91. 

 Alternate ji^eneralions, '.','.)[. 

 Amblyopsis. blind lish, 1 13. 

 America, North, productions allied to 

 tliose of Europe, 340. 



North, bowlders and glaciers of, .343. 



South, no modern formations ou west 

 coast, 275. 

 Ammcmites, sudden extinction of, .302. 

 Anagallis, sterility of, 235. 

 Analogy of variations, 100. 

 Ancylus, a")3. 

 Andaman Islands inhabited by a toad, 



aj8. 

 Animals, not domesticated from being 



variable, 30. 

 Animals, domestic, descended from sev- 

 eral stocks, .32. 



domestic, acclimatization of, 11-4. 



of Australia, 113. 



with thicker fur in cold climates, 133. 



blind, in caves. 111. 



extinct, of Australia, 310. 

 Anoinma, 229. 



Antarctic islands, ancient flora of, 303. 

 Ants atlondiiiL: aphides, 201. 



sluve-TiKikiiii: instinct. 212. 



neuter, strnctiire of, 22ti. 

 Aidiides, attended by ants, 203. 

 Aphis, development'of, 898. 

 Apteryx, 170. 

 Anil) horses, 41. 

 Arulo-C'aspian Sea, 317. 



Archeopteryx, 288. 



Archiac, M. de, ou the succession of spe- 

 cies, 3(M. 

 Artichoke, Jerusalem. 110. 

 Ascension, plants of, :i55. 

 Asclepias, pollen of, 185. 

 Asparagus, 3.32. 

 Aspicarpa. .377. 

 Asses, striped, 101. 



improved by selection, 49. 

 Atenchus, 140. 



Aucanitaine, ou land-shells, 301. 

 Audubon, on habits of friL'ate-bird. 178. 



on variation in birds'-nests, 204. 



on heron eating seeds, 351. 

 Australia, animals of, 113. 



dogs of, 207. 



extinct animals of, 310. 



European plants in, 345. 



glaciers of, 342. 

 Azara, on flies destroying cattle, 78. 

 Azores, flora of, 335. 



Babington, Mr., on British plants, 57. 

 Baer, Von, standard of Iliirnness, 122. 



comparison of bee and fish, 314. 



embryonic similarity of the vertcbra- 

 ta, 395. 

 Balancement of growth, 149. 

 Barbeny, flowers of, 100. 

 BarrandV, !M., on Silurian colonies, 296. 



on the succession of species, 205. 



on parallelism of paleozoic forma- 

 tions, .307. 



on afflnities of ancient species, 308. 

 Barriers, importance of, .323. 

 Bates, Mr., on mimetic butterflies, 884. 

 Batrachians on islands, 3.5S. 

 Bats, how structure acquired, 174. 



distribution of, 3,")4. 

 Bear, catching water-insects. 176. 

 Beauty, how acquired, 194, 422. 

 Bee, sting of, 197. 



queen, killing riv.nls, 197. 



Australian, extermination of, 81. 

 Bees fertilizing flowers, 7'.). 



hiye, not sucking the red-clover, 97. 



Ligurian, 9S. 



hive, cell-making instinct, 216. 



variation in habits, 201. 



