Cenozoic age, [185].
Cicada killer, [143].
Circular nest of bird, [147].
City life in man, [256].
Clothing of birds, [101].
Coal plants, [174].
Cold-blooded animals, [99].
Color, concealing, Thayer, [115].
Concealing appearance, [105].
Cope and Lamarckianism, [244].