448 



ON THE ORIGIN OF SPECIES 



Hermaphrodites crossing, 87. 

 Heron eating seed, 348. 

 Heron, Sir R., on peacocks, 81. 

 Hensinger on white animals not 



poisoned by certain plants, 11. 

 Hewitt, Mr., on sterility of first 



crosses, 237. 

 Himalaya, glaciers of, 335. 



plants of, 336. 



Hippeastrum, 225. 

 Holly-trees, sexes of, 84. 

 Hollyhock, varieties of, crossed, 



243. 

 Hooker, Dr., on trees of New 



Zealand, 91. 

 on acclimatisation of Hima- 

 layan trees, 127. 

 — — on flowers of umbelliferse, 



131. 



on glaciers of Himalaya, 335. 



on algae of New Zealand, 337. 



on vegetation at the base of 



the Himalaya, 340. 

 on plants of Tierra del Fuego, 



336. 339. 



Australian plants, 337, 



on 



359. 



— on relations of flora of South 

 America, 340. 



— on flora of the Antarctic 



lands, 342, 359. 

 — on the plants 

 pagos, 352, 357. 



of the Gala- 



Hooks on bamboos, 177. 



to seeds on islands, 352. 



Horner, Mr., on the antiquity of 



Egyptians, 17. 

 Horns, rudimentary, 408. 

 Horse, fossil, in La Plata, 286. 

 Horses destroyed by flies in La 



Plata, 67. 



striped, 148. 



proportions of, when young, 



400. 

 Horticulturists, selection applied 



by, 30. 

 Hnber on cells of bees, 207. 

 P., on reason blended with 



instinct, 187. 

 on habitual nature of in- 

 stincts, 187. 

 — — on slave-making ants, 197. 



on Melipona domestica, 202. 



Humble-bees, cells of, 202. 

 Hunter, J., on secondary sexual 



characters, 136. 



Hutton, Captain, on crossed geese 



227. 

 Huxley, Prof., on structure of 



hermaphrodites, 91. 

 on embryological succession, 



303. 



on homologous organs, 394. 



on the development of apbis, 



397. 

 Hybrids and mongrels compared, 



244. 

 Hybridism, 220. 

 Hydra, structure of, 171 



Ibla, 134. 



Icebergs transporting seeds, 326. 



Increase, rate of, 59. 



Individuals, numbers favourable 

 to selection, 92. 



many, whether simultane- 

 ously created, 319. 



Inheritance, laws of, 12. 



at corresponding ages, 13, 78. 



Insects, colour of, fitted for habi- 

 tations, 77. 



sea-side, colours of, 120. 



blind, in caves, 125. 



luminous, 174. 



neuter, 212. 



Instinct, 186. 



Instincts, domestic, 193. 



Intercrossing, advantages of, 88. 



Islands, oceanic, 349. 



Isolation favourable to selection, 

 95. 



Japan, productions of, 334. 



Java, plants of, 336. 



Jones, Mr. J. M., on the birds of 



Bermuda, 351. 

 Jussieu on classification, 375. 



Kentucky, caves of, 124. 

 Kerguelen-land, flora of, 342, 358. 

 Kidney -bean, acclimatisation of, 



129. 

 Kidneys of birds, 130. 

 Kirby on tarsi deficient in beetles, 



122. 

 Knight, Andrew, on cause of 



variation, 7. 

 Kolreuter on the barberry, 89. 



on sterility of hybrids, 221. 



on reciprocal crosses, 282. 



on crossed varieties of nica- 



tiana, 243. 



