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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.