COCK. 



INDEX. 



CORPORA. 



421 



Cock, game, killing a kite, ii. 44 ; 

 blind, fed by its companions, i. 77 ; 

 comb and wattles ot" the, ii. 98 ; 

 preference shown by the, for young 

 hens, ii. 121 ; game, transparent 

 zone in the hackles of a, ii. 136. 



Cock of the rock, ii. 100. 



Cockatoos, ii. 226, 228, 230 ; nest- 

 ling, ii. 109 ; black, immature plu- 

 mage of, ii. 188, 



CcELEXTERATA, absence of secondary 

 sexual characters in, i. 321. 



Coffee, fondness of monkeys for, i. 12. 



Cold, supposed effects of, i. 116; 

 power of supporting, by man, i. 

 237. 



COLEOPTERA, i. 366 ; stridulant or- 

 gans of, discussed, i. 381. 



CoLLiXGWOOD, C, on the pugnacity 

 of the butterflies of Borneo, i. 386; 

 on butterflies being attracted by a 

 dead specimen of the same species, 

 i. 400. 



Colombia, flattened heads of savages 



'. ot\ ii. 340. 



Colonists, success of the English as, 

 i. 179. 



Coloration, protective, in birds, ii. 

 223. 



Colour, supposed to be dependent on 

 light and heat, i. 115; correlation 

 of, with immunity from certain 

 poisons and parasites, i. 242 ; pur- 

 pose of, in lepidoptera, i. 399 ; re- 

 lation of, to sexual functions, in 

 fishes, ii. 14; difference of, in the 

 se,xes of snakes, ii. 29 ; sexual dif- 

 ferences of, in lizards, ii. 36 ; in- 

 fluence of, in the pairing of birds of 

 difterent species, ii. 115; relation 

 of, to nidification, ii. 167, 172 ; 

 sexual difl'erences of, in mammals, 

 ii. 286, 294; recognition of, by 

 quadrupeds, ii. 295 ; of children, 

 in different races of man, ii. 318 ; 

 of the skin in man, ii. 381. 



Colours, admii-ed alike by man and 

 animals, i. 64 ; bright, due to sexual 

 selection, i. 322 ; bright, among the 

 lower animals, i. 322, 323 ; bright, 

 protective to butterflies and moths, 

 i. 395 ; bright, in male flshes, ii. 

 7, 13; transmission of, in birds, ii. 

 159. 



COLQUiiOUN, example of reasoning in 



a retriever, i. 48. 

 Cohimba passerina, young of, ii. 188. 

 Colymhus glacialis, anomalous young 



of, ii. 211. 

 COMP), development of, in fowls, i. 



295. 

 Combs and wattles in male birds, ii. 



98. 

 Community, preservation of varia- 

 tions useful to the, by natural 



selection, i. 155. 

 COMPOSiTvE, gradation of species 



among the, i. 227. 

 COMTE, C, on the expression of the 



ideal of beauty by sculpture, ii. 



380. 

 Conditions of life, action of changed, 



upon man, i. 113; influence of, on 



plumage of birds, ii. 196. 

 Condor, eyes and comb of the, ii. 



129. 

 Conjugations, origin of, i. 61. 

 Conscience, i. 91, 104; absence of, 



in some criminals, i. 92. 

 Constitution, difference of, in dif- 

 ferent races of men, i. 216. 

 Consumption, liability of Cebiis Aza- 



rx to, i. 12 ; connexion between 



complexion and, i. 244. 

 Convergence, i. 230. . 

 Cooing of pigeons and doves, ii. 60. 

 Cook, Capt., on the nobles of the 



Sandwich Islands, ii. 356. 

 Cope, E. D., on the dinosauria, i. 



204 ; on the origin of genera, ii. 



215. 

 Cophutis ceylanica, sexual differences 



of, ii. 32, 36. 

 Copris, i. 370. 

 Copris Isidis, sexual differences of, i. 



369. 

 Copris lunaris, stridulation of, i. 380. 

 Corals, bright colours of, i. 322. 

 Coral-snakes, ii. 31. 

 Curdy his, sexual difference of colour 



in a species of, ii. 36. 

 Corfu, habits of the chaffinch in, i. 



307. 

 Cornelius, on the proportions of the 



sexes in Lucanus Cervus, i. 313. 

 Corpora Wolffiana, i. 207 ; agree- 

 ment of, with the kiduevs of flshes, 



i. 16. 



