Seite - 546 - in The Origin of Species

546 INDEX Instinct, 262. '. , not varying simultaneously with structure, 290. Instincts, domestic, 267. Intercrossing, advantages of, no, 318. Islands, oceanic, 431. Isolation favourable to selection, 116. J Japan, productions of, 417. Java, plants of, 420. Jones, Mr. J. M., on the birds of Bermuda, 433. Jourdain, M., on the eye-spots of star-fishes, 191. Jukes, Prof., on subaerial denuda- tion, 336. _ Jussieu, on classification, 455. K Kentucky, caves of, 150. Kerguelen-land, flora of, 425, 441. Kidney-bean, acclimatisation of, 153. Kidneys of birds, 156. Kirby, on tarsi deficient in beetles, 148. Knight, Andrew, on cause of varia- tion, 25. Kolreuter, on Intercrossing, 109. • , on the barberry, in. ; on sterility of hybrids, 299, 300. , on reciprocal crosses, 308. -— —, on crossed varieties of nico- tiana, 326. on crossing male and her- maphrodite flowers, 490. Lamarck, on adaptive characters, 462. Lancelet, 137. , eyes of, 193. Landois, on_ the development of the wings of insects, ig6. Land-shells, distribution of, 438. , of Madeira, naturalised, 443. , resisting salt water, 439. Languages, classification of, 459. Lankester, Mr. E. Ray, on Longev- ity, 229. , on homologies, 477. Lapse, great, of time, 335. Larvx, 480. Laurel, nectar secreted by the leaves, 106. Laurentian formation, 360. Laws of variation, 145. Leech, varieties of, 89. Leguminosae, nectar secreted by glands, 106. Leibnitz' attack on Newton, 520. Lepidosiren, 118, 380. Lepidosiren, limbs in a nascent con- dition, 492. Lewes, Mr. G. H., on species not having changed in Egypt, 220. , on the Salamandra atra, 4pi. -, on many forms of life having been at first evolved, 524. Life, struggle for, 78. Lingula, Silurian, 359. Linnasus, aphorism of, 452. Lion, mane of, 102. , young of, striped, 480. Lobelia fulgens, 87, 111. , sterility of crosses, 302. Lockwood, Mr., on the ova of the Hippocampus, 244. Locusts transporting seeds, 408. Logan, Sir W., on Laurentian for- mation, 360. Lowe, Rev. R. T., on locusts visit- ing Madeira, 408. Lowness of structure connected with variability, 160. ; related to wide distribution, 446. Lubbock, Sir J., on the nerves of coccus, 60. , on secondary sexual charac- ters, 167. on a diving hymenopterous insect, 189. -— , on aftinities, 352. -, on metamorphoses, 480. Lucas, Dr. P., on inheritance, 30. — , on resemblance of child to parent, 329. Lund and Clausen, on fossils of Brazil. 38S. Lyell, Sir C., on the struggle for existence, 77. , on modern changes of the earth, 109. Sir C., on terrestrial animals not having been developed on islands, 233. on a carboniferous land-shell, 341. on strata beneath Silurian system, 360. on the imperfection of the geo- logical record, 363. -, on the appearance of species, 363. -, on Barrande's colonies, 364. , on tertiary formations of Europe and North America, 373. -, on parallelism of tertiary for- mations, 377. , on transport of seeds by ice- bergs, 410. -, on great alterations of climate. 426. , on the distribution of fresh- water shells, 429. -, on land-shells of Madeira, 443. Lyell and Dawson, on fossilized trees in Nova Scotia, 349. Lythrum salicaria, trimorphic, 321.