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COCK.
INDEX.
COSMETORNIS
635
- Cock, blind, fed by its companions, 103; game, killing a kite, 363; comb and Wattles of the, 403; preference shewn by the, for young hens, 420; game, transparent zone in the hackles of a, 430
- Cock of the rock, 405.
- Cockatoos, 491, 492, 493; nestling, 411; black, immature plumage of, 467.
- Cœlenterata, absence of secondary sexual characters in, 260.
- Coffee, fondness of monkeys for, 7.
- Cold, supposed effects of, 32; power of supporting, by man, 182.
- Coleoptera, 294; stridulation of, 284; stridulant organs of, discussed, 303.
- Colias edusa and hyale, 319.
- Collingwood, C., on the pugnacity of the butterflies of Borneo, 307; on butterflies being attracted by a dead specimen of the same species, 317.
- Colobus, absence of the thumb, 51.
- Colombia, flattened heads of savages of, 575.
- Colonists, success of the English as, 142.
- Coloration, protective, in birds, 489.
- Colour, supposed to be dependent on light and heat, 32; correlation of, with immunity from certain poisons and parasites, 193; purpose of, in lepidoptera, 316; relation of, to sexual functions, in fishes, 343; difference of, in the sexes of snakes, 351; sexual differences of, in lizards, 357; influence of, in the pairing of birds of different species, 415; relation of, to nidification, 453, 456; sexual differences of, in mammals, 533, 540; recognition of, by quadrupeds, 540; of children in different races of man, 537; of the skin in man, 604.
- Colours, admired alike by man and animals, 93; bright, due to sexual selection, 261; bright, among the lower animals, 261, 262; bright, protective to butterflies and moths, 313; bright, in male fishes, 335, 340; transmission of, in birds, 448.
- Colquhoun, example of reasoning in a retriever, 78.
- Columba passerina, young of, 467.
- Colymbus glacialis, anomalous young of, 482.
- Comb, development of, in fowls, 239.
- Combs and wattles in male birds, 403.
- Community, preservation of variations useful to the, by natural selection, 62.
- Compositæ, gradation of species among the, 175.
- Comte, C., on the expression of the ideal of beauty by sculpture, 581.
- Conditions of life, action of changed, upon man, 30; influence of, on plumage of birds, 472.
- Condor, eyes and comb of the, 472.
- Conjugations, origin of 91.
- Conscience, 114, 126; absence of, in some criminals, 116.
- Constitution, difference of, in different races of men, 168.
- Consumption, liability of Cebus Azaræ to, 7; connexion between complexion and, 194.
- Convergence of characters, 177.
- Cooing of pigeons and doves, 374.
- Cook, Capt., on the nobles of the Sandwich Islands, 586.
- Cope, E. D., on the Dinosauria, 158.
- Cophotis celyanica, sexual differences of, 354, 357.
- Cupris, 295.
- Isidis, sexual differences of, 296
- lunaris, stridulation of, 303.
- Corals, bright colours of, 260.
- Coral-snakes, 353.
- Cordylus, sexual difference of colour in a species of. 357.
- Corfu, habits of the Chaffinch in, 248.
- Cornelius, on the proportions of the sexes in Lucanus Cervus, 253.
- Corpora Wolffiana, 161; agreement of, with the kidneys of fishes, 11.
- Correlated variation, 43.
- Correlation, influence of, in the production of races, 197.
- Corse, on the mode of fighting of the elephant, 514.
- Corvus corone, 408.
- graculus, red beak of, 491.
- pica, nuptial assembly of, 406.
- Corydalis cornutus, large jaws of the male, 275.
- Cosmetornis, 462.