INDEX ABBOTT, Dr. C. C., instability of on American water - thrushes Mr., drawings of caterpillars and their food plants, 203 Acclimatisation, 94 Achatinellidæ, Gulick on variations Acquired characters, non-heredity of, 440 Acræidæ, mimicry of, 247 Adolias dirtea, sexual diversity of, Ægeriidæ, mimicry by, 240 on North American weeds, 15. Albatross, courtship of great, 287 on degradation of wind-fertilised on insects and flowers, 332 Mr. J. A., on the variability Allen, Mr. J. A., on colour as in- Alluring coloration, 210 intelligence, supposed action of, characteristics of man, 454 usually die painless deaths, 38 most allied to man, 450 Argyll, Duke of, on goose reared by Artemia salina and A. milhausenii, Asclepias curassavica, spread of, 28 Australia, spread of the Cape-weed fossil and recent mammals of, Azara, on cause of horses and cattle 19 Azores, flora of, supports aerial trans- B BAKER, Mr. J. G., on rarity of spiny Ball, Mr., on cause of late appearance Barber, Mrs., on variable colouring of on protective colours of African Barbs, 91 Barriers, importance of, in questions Bates, Mr. H. W., on varieties of on inedibility of Heliconidæ, on a conspicuous caterpillar, on mimicry, 240, 243, 249 Beddard, Mr. F. E., variations of on plumes of bird of paradise, Beech trees, aggressive in Denmark, Beetle and wasp (figs.), 259 Silesia, 404 Beginnings of important organs, 128 Belt's frog, 266 Birds, rate of increase of, 25 how destroyed, 26 variation among, 49 variation of markings of, 52 diagram showing variation of tarsus and toes, 60 use of structural peculiarities eggs, coloration of, 212 and butterflies, white in tropical sometimes seize inedible butter- mimicry among, 263 Birds, sexual coloration of, 275 choice of female not known to no proof of æsthetic tastes in, and insects at sea, 357 of oceanic islands, 358 carrying seeds on their feet, ancestral forms of, 407 Boyd Dawkins, on development of on origin of man, 456 Brazil, supposed proof of glaciation Brewer, Professor W. H., on want of Bromelia, animals inhabiting leaves of, 118 Bronn, Professor, on supposed useless- Butler, Mr. A. G., on inedibility of Butterflies, varieties of, 44 small, of Isle of Man, 106 recognition by, 226 inedibility of some, 234 Carriers, 91 Caterpillars, resemblance of, to their Cattle, how they prevent the growth increase of, in St. Domingo, Chambers, Robert, on origin of species, Chance rarely determines survival, Change of conditions, utility of, 326 transferred from useless to use- Charaxes psaphon persecuted by a Chile, numerous red tubular flowers Chimpanzee, figure of, 454 of forests on the pampas, 23 Clover, white, spread of, in New Co-adaptation of parts by variation, Coccinella mimicked by grasshopper, Collingwood, Mr., on butterflies re- Coloration, alluring, 210 a theory of animal, 288 Colour correlated with sterility, 169 in nature, the problem to be constancy, in animals indicates and environment, 190 produced by surrounding ob- adaptations, local, 199 of wild animals not quite sym- metrical, 217 (note) as influenced by locality or development in butterflies, 274 of flowers, 308 change of, in flowers when fertil- in nature, concluding remarks of flowers growing together con- Complexity of flowers due to alternate Composite, a, widely dispersed with- Confinement, affecting fertility, 154 possible connections between, Continuity does not prove identity of Cope, Dr. E. D., on non-adaptive on fundamental laws of growth, on bathmism or growth-force, on use producing structural on law of centrifugal growth, on origin of the feet of ungu- on action of animal intelligence, Corvus frugilegus, 2 corone, 2 Coursers, figures of secondary quills, Cowslip, two forms of, 157 Crab, sexual diversity of colour of, Cretaceous period, dicotyledons of, 400 Crisp, Dr., on variations of gall Crosses, a cause of variation, 99 reciprocal, 155 Cross-fertilisation, modes of securing, difference in, 155 Crossing and changed conditions, Cruciferæ, variations of structure in, Cuckoo, eggs of, 216 Cuckoos mimick hawks, 263 Curculionidæ mimicked by various D DANA, Professor, on the permanence Danaidæ little attacked by mites, 235 Darwin, change of opinion effected the Newton of Natural History, 9 his view of his own work, 10 on change of plants and animals on absence of wild cattle in on cats and red clover, 20 on variety of plants in old turf, on the beneficent action of the on variability of common species, his non-recognition of extreme on constitutional variation in on unconscious selection, 96 of structure in inhabitants of on species of plants in turf, 110 on origin of mammary glands, Darwin, on correlation of sterility and colour, 169 on selective association, 172 on cause of infertility of hybrids, on white tail of rabbit, 218 on conspicuous caterpillars, 236 on decorative plumage of male on development of ocelli, 290 on flowers due to insects, 332 on effects of disuse in domestic animals, 415, 435 on direct action of environment, on unintelligibility of theory of on origin of man's moral nature, Mr. George, on intermarriages De Candolle, definition of species, 1 on war between plants, 16 on origin of useful cultivated Deer's horns, development of, 389 Delbœuf's law of variation, 141 Dendræca coronata, variation of wing- feathers of, 51 Denmark, struggle between trees in, 20 Denudation, evidences of, 379 Diadema anomala, 271 misippus, great diversity of sexes Diaphora mendica mimics Spilosoma Difficulties in the facts of fertilisation Dimorphism and trimorphism, 156 Diseases common to man and animals, Display of decorative plumage, 287 conditions which have deter- Disuse, effects of, among wild animals, no proof that the effects of, are Divergence of character, 105-109 leads to maximum of forms of Dogs, origin of, 88 varieties of, 89 Dolichonyx oryzivorus, diagram show- ing variations of, 55 Domestic animals, varieties of, 88 Draba verna, varieties of, 77 Dress of men not determined by Dust from Krakatoa, size of particles E EASTERN butterflies, variation of, 45 sects, 106 |