Coccus of apple trees, ii. [231].
Cochin fowls, i. 227, 250, 252, 260-261;
occipital foramen of, figured, i. 261;
section of skull of, figured, i. 263;
cervical vertebra of, figured, i. 267.
Cochineal, persistence of, ii. [236];
preference of, for a particular cactus, ii. [275].
Cochlearia armoracia, ii. [170].
Cock, game, natural selection in, ii. [225];
spur of, grafted on the comb, ii. [296];