Butterflies, mimicry in. --sexual characters in.

Cannon and Davenport, experiments on Daphniae by.

Cesnola, experiments on Mantis by.

Chambers, R., "The Vestiges of Creation" by.

Colour, E.B. Poulton on The Value in the Struggle for life of. --influence and temperature on changes in. --in relation to Sexual Selection.

Colours, incidental. --warning.

Correlation of organisms, Darwin's idea of the.

Cunningham and Marchand, on the brain.