INDEX. 



399 



INSTINCT. 



tion from, iii. 341 ; colour in, acquired 

 by sexual selection, iii. 137 ; flower- 

 frequenting, impulse given by, to the 

 development of the higher plants, iii. 

 248 ; musical organs of, iii. 97 ; 

 spread of European, in New Zea- 

 land, iii. 6 ; sucking, influence of, 

 on the development of the Dicoty- 

 ledons, iii. 285. 



Instinct, ii. 318, 305. 



Instincts, congenital habits, iii. 170; 

 difficulty of discussing, iii. 244. 



Institute of France, election as a 

 corresponding member of the Botan- 

 ical section of the, iii. 223. 



Intellectual powers, gradation of the, 

 ii. 211. 



Intelligence in Earthworms, iii. 243. 



Intermarriage of cousins, iii. 129, 130. 



Internode, uppermost, of branches of 

 Echinocystis lobata, twisting of the, 

 iii. 312, 313. 



Islands, distribution of species in, ii. 

 24, 25 ; mammals on, ii. 334, 335 ; 

 antiquity of, ii. 335 ; oceanic, 

 absence of secondary and palaeozoic 

 rocks from, ii. 76, 80 ; relationships 

 of species in, ii. 24, 25. 



Isle of Wight, visit to (in 1867), iii. 

 92. 



Isolation, effects of, iii. 157, 159, 161 ; 

 influence of, in modifying species, ii. 

 28, 29. 



JACKSON, B. Daydon, preparation of 

 the Kew-Index placed under the 

 charge of, iii. 353^ 



Janet's, ' Materialisme Contemporain,' 

 iii. 46. 



Japan and China, junction of, ii. 137. 



Jardiae, Sir Wm., criticisms of the 

 * Origin,' ii. 246. 



Jemmy Button, i. 251. 



Jenkin, Fleeming, review of the 

 'Origin, 'iii. 107, 108. 



Jenyns, Rev. Leonard, acquaintance 

 with, i. 54 ; his opinion of the theory 

 ii. '285, 287, 327%^; reminiscences 

 of insect-collecting in Cambridge- 

 shire, i. 364 note. 



, letters to : i. 181 ; with charac- 



KINGSLEY. 



ter of Henslow, i. 186, 188 ; on the 

 ' Origin of Species,' ii. 219, 263 ; on 

 the ' Naturalists' Pocket Almanack,' 

 i- 353 '> on the importance of small 

 facts in natural history, ii. 31 ; 

 on checks to increase of species, ii. 

 33 ; on his * Observations in Natural 

 History,' ii. 35 ; on power of work, 

 iii. 211. 

 Jones, Dr. Bence, treatment by, iii. 



355- 



'Journal of Researches,' i. 79, 80, 279, 

 282, 283 ; publication of the second 

 edition of the, i. 337 ; differences in 

 the two editions of the, with regard 

 to the theory of species, ii. 1-5 ; 

 German translation of the, i. 323 ; 

 pronounced unfit for publication, iii. 

 60. 



Juan Fernandez, ii. 94. 



Judd, Prof., on Mr. Darwin's inten- 

 tion to devote a certain sum to the 

 advancement of scientific interests, 

 iii. 352. 



Judd's ' Ancient Volcanoes of the 

 Highlands,' iii. 190. 



Jukes, Prof. Joseph B., ii. 293. 



KEELING ATOLL, insects on, ii. 30. 



Kerguelen Land, ii. 74, 93 ; Lignite- 

 plants of, iii. 247. 



Kerner's ' Flowers and their Unbidden 

 Guests,' Dr. Ogle's translation of, iii. 

 287. 



Kew Gardens, progress of, under the 

 Hookers, iii. 39 note', agitation to 

 open all day, iii. 331. 



Kew-Index of plant names, iii. 351 ; 

 endowment of, by Mr. Darwin, iii. 



35 2 - 

 Kew, Sir Joseph Hooker's troubles at, 



iii. 166. 

 Keyserling, Count, his opinion of the 



' Origin ,'ii. 261. 

 Kidney-beans, fertilisation of, iii. 259, 



260. 

 King, Dr., letter of thanks to, or 



information on Earthworms, iii. 



216. 

 Kingsley, Rev. Charles, letter from, on 



the ' Origin of Species,' ii. 287 ; on 



