INDEX. 



ABBOT, F. E., letter to, i. 275. 



Academy of Natural Sciences (Phila- 

 delphia) elects Darwin a member, 

 ii. 100. 



Agassiz, Alexander, letter to, ii. 421. 



Agassiz, Louis, Darwin's estimate 

 of, i. 403 ; letters to, ii. II, 281, 

 361 ; his attitude toward the ' Ori- 

 gin of Species,' 63, 64 note, 80, 

 103, 123, 152; reviews the 'Ori- 

 gin of Species,' 123. 



Aggregation, studied by Darwin, ii. 

 518. 



'Almanack, The Naturalists' Pock- 

 et,' mentioned, i. 321. 



Andes, Darwin crosses the, i. 231. 



'Annals and Magazine of Natural 

 History,' mentioned, ii. 78. 



Anticipation of Darwin's views, ii. 

 40-42, 95, 103, 113, 225, 289. 



Ants, observations on, i. 485 ; ii. 

 158, 369- 



Appleton, D., & Co., publish ' Ori- 

 gin of Species ' in America, ii. 65. 



Argyll, Duke of, criticises the ' Ori- 

 gin of Species,' ii. 216 ; Darwin's 

 comments on his criticisms, 216- 

 218 ; Darwin on his ' Reign of 

 Law,' 244, 248 ; reviews the ' Fer- 

 tilisation of Orchids,' 449. 



Aristotle, Darwin's estimate of, ii. 

 427. 



Arrangement of leaves on the stems 

 of plants, ii. 234-236. 



'Athenaeum,' Darwin on its review 

 of the ' Origin of Species,' ii. 19, 

 24 ; reports British Association 

 discussion, 113 ; Darwin's letters 

 to, in his own defence, 204, 206 ; 

 criticises Darwin, 206, 



Australia, development of animals 



in, ii. 132. 



Australian flora, i. 500, 527. 

 Austrian expedition, i. 451. 

 Autobiography, i. 25-86; extracts 



from, 277, 287, 314. 

 Aveling, Dr., on Darwin's religious 



views, i. 286 note. 



Bain, Alexander, letter to, ii. 350. 



Balfour, Francis M., Darwin's esti- 

 mate of, ii. 426. 



Baly medal presented to Darwin, ii. 

 401. 



Bar, K. E. von, agrees with Dar- 

 win, ii. 122. 



Bastian, H. C., Darwin on his ' Be- 

 ginnings of Life,' ii. 346-348. 



Bates, H. W., Darwin on his insect 

 fauna of the Amazon valley, ii. 

 154; letters to, 170, 173, 183; 

 Darwin on his mimetic variations 

 of butterflies, 183-185. 



Bats, ii. 128. 



Beagle, voyage of, i. 49-57 ; Darwin 

 offered an appointment to the, 

 165 ; her equipments, 188 ; object 

 of her voyage, 191 ; her crew, 194. 



Beetles, collecting, i, 496. 



Behrens, W., letter to, ii. 456. 



Bell, T., describes Darwin's rep- 

 tiles, i. 246. 



Bell-stone of Shrewsbury men- 

 tioned, i. 36. 



Belt, Thomas, Darwin on his ' Natu- 

 ralist in Nicaragua,' ii. 365. 



Bemmelen, A. van, letter to, ii. 403. 



Bentham, George, his silence on 

 natural selection, ii. 86 ; letter to 

 Francis Darwin on his adoption 



