Colias edusa and hyale.
Collingwood, C., on the pugnacity of the butterflies of Borneo; on butterflies being attracted by a dead specimen of the same species.
Colobus, absence of the thumb.
Colombia, flattened heads of savages of.
Colonists, success of the English as.
Coloration, protective, in birds.
Colour, supposed to be dependent on light and heat; correlation of, with immunity from certain poisons and parasites; purpose of, in lepidoptera; relation of, to sexual functions, in fishes; difference of, in the sexes of snakes; sexual differences of, in lizards; influence of, in the pairing of birds of different species; relation of, to nidification; sexual differences of, in mammals; recognition of, by quadrupeds; of children, in different races of man; of the skin in man.
Colours, admired alike by man and animals; bright, due to sexual selection; bright, among the lower animals; bright, protective to butterflies and moths; bright, in male fishes; transmission of, in birds.
Colquhoun, example of reasoning in a retriever.
Columba passerina, young of.