Frogs on islands, ii. 182. in United States, i. 104. varieties of, acclimatised in Fur, thicker in cold climates, i. 166. G. Galapagos Archipelago, birds of, productions of, ii. 188, 190. Game, increase of, checked by ver- Gärtner, on sterility of hybrids, ii. -, on reciprocal crosses, ii. 15. on crossed maize and verbas- on comparison of hybrids and Geese, fertility when crossed, ii. 9, 10. upland, i. 222. Geikie, Mr., on subaerial denuda- Genealogy, important in classifica- on homologous organs, ii. 233. -, or correlation, in monstrosi- on correlation, i. 179. on variable parts being often -, imperfection of the record, ii. Giraffe, tail of, i. 245. structure of, i. 276. Glacial period, ii. 151. Glacial period, affecting the North Goethe, on compensation of growth, Gooseberry, grafts of, ii. 19. Mr., on colours of birds, i. 165. Gourds, crossed, ii. 38. Graba, on the Uria lacrymas, i. 113. Gray, Dr. Asa, on the variability of -, on man not causing variabil- on sexes of the holly, i. 116. on naturalised plants in the on æstivation, i. 272. on Alpine plants, ii. 151. Dr. J. E., on striped mule, i. 199. Habit, effect of, under nature, i. 168. i. 219. Harcourt, Mr. E. V., on the birds of Hartung, M., on boulders in the Hearne, on habits of bears, i. 220. Hector, Dr., on glaciers of New Zea- Heer, Oswald, on ancient cultivated on plants of Madeira, i. 130. resisting salt water, ii. 187. -, on sterility of hybrids, ii. 6. Hildebrand, Prof., on the self-ste- Himalaya, glaciers of, ii. 159. plants of, ii. 162. Hippeastrum, ii. 7. Hofmeister, Prof., on the move- on acclimatisation of Hima- on flowers of umbelliferæ, i. on the position of ovules, i. 268. Horns, rudimentary, ii. 261. -, proportions of, when young, Horses destroyed by flies in Para- striped, i. 199. Huber, on cells of bees, i. 349. P., on reason blended with on habitual nature of instincts, on slave-making ants, i. 336. on the Molothrus, i. 334. Hutton, Captain, on crossed geese, Huxley, Prof., on structure of her- on the affinities of the Sirenia, on forms connecting birds and at corresponding ages, i. 15, Insects, colour of, fitted for their sea-side, colours of, i. 165. their resemblance to certain objects, i. 283. neuter, i. 359. Instinct, i. 319. not varying simultaneously Instincts, domestic, i. 325. resisting salt water, ii. 187. on homologies, ii. 237. Laurel, nectar secreted by the leaves, Intercrossing, advantages of, i. 149, Laurentian formation, ii. 84. ii. 27. Islands, oceanic, ii. 177. Laws of variation, i. 164. Isolation favourable to selection, i. Leguminosa, nectar secreted by 127. J. Japan, productions of, ii. 158. Jones, Mr. J. M., on the birds of Jourdain, M., on the eye-spots of Jukes, Prof., on subaerial denuda- Jussieu, on classification, ii. 209. K. Kentucky, caves of, i. 172. Kerguelen-land, flora of, ii. 169, 189. glands, i. 114. Leibnitz' attack on Newton, ii. 294. limbs in a nascent condition, Lewes, Mr. G. H., on species not -, on many forms of life having young of, striped, ii. 241. sterility of crosses, ii. 7. Lockwood, Mr., on the ova of the Lowe, Rev. R. T., on locusts visiting 196. connected with related to wide distribution, ii. Lubbock, Sir J., on the nerves of on secondary sexual charac- on a diving hymenopterous on affinities, ii. 73. on metamorphoses, ii. 239, 242. on modern changes of the on terrestrial animals not hav- 281. on Barrande's colonies, ii. 90. on parallelism of tertiary for- -, on transport of seeds by ice- on great alterations of climate, on the distribution of fresh- on land-shells of Madeira, ii. Lyell and Dawson, on fossilized trees 32. M. Macleay, on analogical characters, Macrauchenia, ii. 107. Madeira, plants of, i. 130. beetles of, wingless, i. 169. mammals of, ii. 185. ii. 209. Maurandia, i. 307. Means of dispersal, ii. 140. Metamorphism of oldest rocks, ii. 85. acclimatisation of, i. 175. Miller, Prof., on the cells of bees, i. Mirabilis, crosses of, ii. 15. Mistletoe, complex relations of, i. 3. and hybrids compared, ii. 39. Monachanthus, ii. 216. Mons, Van, on the origin of fruit- Monstrosities, i. 51. Naturalisation of forms distinct Moquin-Tandon, on sea-side plants, Naudin, on analogous variations in i. 166. Morphology, ii. 231. Morren, on the leaves of Oxalis, i. Moths, hybrid, ii. 9. Mozart, musical powers of, i. 321. Müller, Adolf, on the instincts of the Müller, Dr. Ferdinand, on Alpine on the lancelet, i. 154. on air-breathing crustaceans, -, on climbing plants, i. 307. on embryology in relation to on the metamorphoses of crus- Murchison, Sir R., on the forma- on azoic formations, ii. 84. on extinction, ii. 94. gourds, i. 195. on hybrid gourds, ii. 38. Nautilus, Silurian, ii. 83. naturalised products of, ii. 119. number of plants of, ii. 178. Newton, Sir I., attacked for irre- Prof., on earth attached to a 14. Nitsche, Dr., on the Polyzoa, i. 301. Nodules, phosphatic, in azoic rocks, 0. Murie, Dr., on the modification of Oaks, variability of, i. 62. the skull in old age, i. 233. Onites, appelles, i. 168. |