INDEX. ABERRANT groups, 373. Abyssinia, plants of, 326. Acclimatisation, 127. Affinities of extinct species, 287. of organic beings, 358. Agassiz on Amblyopsis, 127. on groups of species suddenly ap- on embryological succession, 295. on embryological characters, 364. Algae of New Zealand, 327. Amblyopsis, blind fish, 127. Artichoke, Jerusalem, 129. Asclepias, pollen of, 173. Asses, striped, 147. Ateuchus, 123. Audubon on habits of frigate-bird, 166 Australia, animals of, 108, dogs of, 192. extinct animals of, 296. Azara on flies destroying cattle, 70. Babington, Mr., on British plants, 49. America, North, productions allied to Balancement of growth, 133. those of Europe, 323. boulders and glaciers of, 325. South, no modern formations on Ammonites, sudden extinction of, 281. Ancylus, 336. Animals, not domesticated from being domestic, descended from several acclimatisation of, 129. of Australia, 108. Bamboo with hooks, 176. Barrande, M., on Silurian colonies, 274. on affinities of ancient species, 288. Bear, catching water-insects, 165. queen, killing rivals, 180. with thicker fur in cold climates, 122. Bees fertilising flowers, 71. blind, in caves, 125. hive, not sucking the red clover: Birds of Madeira, Bermuda, and Gala- | Classification, 360. pagos, 340. song of males, 84. transporting seeds, 315. waders, 337. wingless, 123, 163. with traces of embryonic teeth, 391. Bizcacha, 305. affinities of, 373. Bladder for swimming in fish, 170. Blyth, Mr., on distinctness of Indian cat- on striped Hemionus, 147. Borrow, Mr., on the Spanish pointer, 38. Brent, Mr., on house-tumblers, 191. on hawks killing pigeons, 315. Bronn on duration of specific forms, 257. Cabbage, varieties of, crossed, 93. Canary-birds, sterility of hybrids, 223. Cape of Good Hope, plants of, 102, 326. Cats, with blue eyes, deaf, 18. variation in habits of, 80. curling tail when going to spring, 179. destroyed by flies in La Plata, 70. Cave, inhabitants of, blind, 125. Cephalopoda, development of, 384. Cetacea, teeth and hair, 131. Ceylon, plants of, 326. Chalk formation, 282. Characters, divergence of, 103. sexual, variable, 141. adaptive or analogical, 371. Charlock, 74. Checks to increase, 66. mutual, 69. Chickens, instinctive tameness of, 192. Chthamalus, cretacean species of, 266. domestic products, 42. to natural selection, 95. Cirripedes capable of crossing, 95. their ovigerous frena, 172. larvae of, 383. Clift, Mr., on the succession of types, 295. adaptation of, to organisms, 127. Collections, palæontological, poor, 252. in relation to attacks by flies, 177. Colymbetes, 336. Compensation of growth, 134. Compositæ, outer and inner florets of, 131. Conclusion, general, 416. Coot, 166. on crustaceans of New Zealand, 327. De Candolle on struggle for existence, 61. on general affinities, 374. Alph, on low plants, widely dis- on widely-ranging plants being va on naturalisation, 107. on winged seeds, 133. on Alpine species suddenly becom. on distribution of plants with large on vegetation of Australia, 330. Degradation of coast rocks, 248. of oldest rocks, 269. Development of ancient forms, 293. Division, physiological, of labour, 107. domestic instincts of, 190. proportions of, when young, 386. as bearing on natural selection, 102. Eye, structure of, 167. correction for aberration, 180. Eyes reduced in moles, 125. Fabre, M., on parasitic sphex, 195. Falconer, Dr., on naturalisation of plants on fossil crocodile, 274. on elephants and mastodons, 292. Faunas, marine, 304. Fear, instinctive, in birds, 189. Feet of birds, young molluscs adhering to, 336. of crossed varieties, 236. Fir-trees destroyed by cattle, 69. Fish, flying, 163. teleostean, sudden appearance of, 267. fresh-water, distribution of, 335. Fishes, ganoid, now confined to fresh electric organs of, 172. ganoid, living in fresh water, 281. of compositæ and umbelliferæ, 131. on abrupt range of shells in depth. on poorness of palæontological col- on continuous succession of genera, on continental extensiors, 311. Geoffroy on correlation, 131. on variable parts being often mon- Geographical distribution, 302. Geology, future progress of, 421. Giraffe, tail of, 174. Gmelin on distribution, 318. Godwin-Austen, Mr., on the Malay Archi- Goethe on compensation of growth, 133. Gould, Dr. A., on land-shells, 345. Mr., on colours of birds, 121. on birds of the Galapagos, 347. on distribution of genera of birds, Hearne on habits of bears, 165. Heath, changes in vegetation, 70. Heer, O., on plants of Madeira, 100. Helix pomatia, 346. Helosciadium, 313. Hemionus, striped, 147. Herbert, W., on struggle for existence, 61. on sterility of hybrids, 220. Hermaphrodites crossing, 91. Heusinger on white animals not poisoned Hewitt, Mr., on sterility of first crosses, 233. Himalaya, glaciers of, 324. plants of, 326. Hippeastrum, 221. Holly-trees, sexes of, 88. Hollyhock, varieties of, crossed, 239. Hooker, Dr., on trees of New Zealand, 94. Hooker, Dr., on acclimatisation of Hima on flowers of umbelliferæ, 132. on vegetation at the base of the on plants of Tierra del Fuego, 326, on Australian plants, 327, 347. on relations of flora of South Amer- on flora of the Antarctic lands, 341, on the plants of the Galapagos, 341, 347. Hooks on bamboos, 176. to seeds on islands, 342. Horner, Mr., on the antiquity of Egyp- Horns, rudimentary, 394. Horse, fossil, in La Plata, 278. Horses destroyed by flies in La Flata, 70. proportions of, when young, 386. P., on reason blended with instinct, on habitual nature of instincts, 186. on Melipona domestica, 200. Humble-bees, cells of, 200. Hunter, J., on secondary sexual charac- ters, 136. Hutton, Captain, on crossed geese, 224. on embryological succession, 295. on the development of aphis, 384. Hydra, structure of, 170. neuter, 209. Instinct, 185. Instincts, domestic, 190. Isolation favourable to selection, 97. Jussieu on classification, 363. Kentucky, caves of, 125. Kerguelen-land, flora of, 331, 347. Kirby on tarsi deficient in beetles, 123. on sterility of hybrids, 218. on crossed varieties of nicotiana, 239. Lamarck on adaptive characters, 371. of Madeira, naturalised, 350. Languages, classification of, 367. Larvæ, 382. Laurel, nectar secreted by the leaves, 88. Laws of variation, 120. Leech, varieties of, 73. Matthiola, reciprocal crosses of, 228. Melipona domestica, 200. Metamorphism of oldest rocks, 269. Leguminosæ, nectar secreted by glands, 88. Mice destroying bees, 72. Lepidosiren, 100, 288. Life, struggle for, 60. Linnæus, aphorism of, 360. Lingula, Silurian, 268. Lion, mane of, 84. young of, striped, 382, Lobelia fulgens, 71, 92. Lobelia, sterility of crosses, 221. Lowness of structure connected with va- Lowness, related to wide distribution, 353. on resemblance of child to parent, Lund and Clausen on fossils of Brazil, 296. on modern changes of the earth, 90. on strata beneath Silurian system, on the imperfection of the geological on the appearance of species, 273. on tertiary formations of Europe and on parallelism of tertiary formations, on transport of seeds by icebergs, on great alternations of climate, 332. on land-shells of Madeira, 350. Macleay on analogical characters, 371. beetles of, wingless, 124. Moles, blind, 125. Mongrels, fertility and sterility of, 236. Mons, Van, on the origin of fruit-trees, 32. Mozart, musical powers of, 186. Müller, Dr. F., on Alpine Australian Murchison, Sir R., on the formations of on azoic formations, 268. Nails, rudimentary, 393. Natural history, future progress of, 419. system, 360. Naturalisation of forms distinct from the |