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Show 4.82 INDEX Cope, Dr. E. D., 011 uou-adaptive characters, 131 on fundamental laws o! growth, 420 on bathmism or growth-force, 421 on use producing structural change, 422 on law of centrifugal growth, 422 on origin of the feet of ungulates, 423 on action of animal intelligence, 425 Correlations in pigeons, horses, etc., 140 Corvus frugilegus, 2 corone, 2 Coursers, figures of secondary quills, 224 Cowslip, two forms of, 157 Crab, sexual diversity of colour of, 269 Cretaceous period, dicotyledons of, 400 Crisp, Dr., on variations of gall bladder and alimentary canal, 69 Crosses, a cau e of variation, 99 reciprocal, 155 Cross-fertilisation, modes of securing, 310 ditrerence in, 155 Crossing and changed conditions, parallelism of, 166 Cruciferre, variations of structure in, 80 Cuckoo, eggs of, 216 Cuckoos mimiek hawks, 263 Cultivated plants, origin of useful, 97 Curculionidre mimicked by various insects (figs.), 260 Curves of variation, 64 D DaNA, Professor, on the permanence of continents, 342 Danaidre little attacked by mites, 235 mimicry of, 246 Darwin, change of opinion etl'ected by, 8 the Newton of Nat ural History, 9 his view of his own work, 10 on the euemie. of plants, 16 on fir-trees destroyed by cattle, 17 on change of plants and animals caused by planting, 18 on abRence of wild cattle iu Paraguay, 19 on cats and red clover, 20 on variety of plants in old turf, 35 on the beneficent action of the struggle for exi tence, 40 on variability of wild geraniums, 79 on variability of common specie , 80 his non-recognition of extreme variability of wild species, 82 on races of domestic pigeon, 90 on constitutional variation in plants, 95 on unconsciouR selection, 96 on a case of divergence, 105 on advantage of diversification of structure in inhabitants of one region, 110 on species of plants in turf, 110 on isolation, 119 on origin of mammary glands, 129 011 eyes of flatfish, 129 on origin of the eye, 130 on useless characters, 131 011 use of ears and tails, 136 on disappearance of sport , 140 on tendency to vary in one direction, 141 on rare perpetuation of spor ts, 142 on .utility of specific characters, 142 (note) on importance of biological environment, 148 on variable fertility of plants, 155 on fertile hybrids among plants, 164 INDEX 483 Darwin, on correlation of sterility and colour, 169 on selecli ve association, 172 on infertility and natural selection, 17 4 on cause of infertility of hybrids, 185 on white tail of rabhit, 218 on conspicuous caterpillars, 236 oa Rexual selection in insects, 274 ou decorative plumage of male birds, 285 on development of ocelli, 290 on value of cross-fertilisation, 309 on liluits to utility of inter-crossing, 326 on flowers due to insects, 332 on oceanic islands, 342 ou effects of disuse in domestic animal , 415, 435 on direct action of environment, 419 on unintelligibility of theory of retan1ation aml acceleration, 4.21 (note) on origin of man's moral nature, 461 Mr. George, on intermaniages of Briti h aristocracy, 326 Darwinian theory, statement of, 10 not opposed to spiritual nature of man, 478 Dawkins, Professor Boyd, on development of deer's horns, 389 on recent origin of man, 456 Dawson, Sir W., on determination of fossil plants by leaves, 398 (note) Death of wild animals usually painless, 38 De Candolle, definition of species, 1 on dilliculty of naturalising plants, 15 on war between plants, 16 on origin of useful cultivated plants, 97 Deer's horns, development of, 389 Degeneration, 121 Delbceuf's law of variation, 141 Dendrreca coronata, variation of wing-feathers of, 51 Denmark, struggle between trees in, 20 Denudation, evidences of, 379 Desert animals, colour of, 192 Deserts, efrect of goats and camels in destroying vegetation in, 17 Development and display of accessory plumes, 293 Diadema anomala, 271 misi ppus, great diversity of sexes in, 271 Diaphora mendica mimics Spilosoma menthrasti, 249 Difficulties in the facts of fertilisation of flowers, 325 Dimorphism and trimorphistn, 156 Dippers, probable origin of, 116 Disease and markings, 290 Diseases common to man and animals, 449 Display of decorative plumage, 287 Distribution of organisms should be explained by theory of descent, 338 conditions which have determined the, 341 of marsupials, 350 of tapir., 352 Disuse, effects of, 'among wild animals, 415 no proof that the effects of, are inl1erited, 417 Divergence of character, 105-109 leads to maximum of forms of life in each area, 109 Diversity of fauna and flora with geographical proximity, 339 Dixon, Mr. 8., cl1anged habits of chaffinch in New Zealand, 76 Dogs, origin of, 88 varieti es of, 89 Dolichonyx oryzivorus, diagram show-ing variations of, 55 Domestic animals, varieties of, 88 Draba verna, varietieR of, 77 Dress of men not determined by female choice, 286 Dust from Krakatoa, size of particles of, 363 E EASTERN butterflies, variation of, 4.5 Eaton, Rev. A. E., on Kerguelen insects, 106 |
