Cnossos (Crete), [92], [94], [95], [101], [108], [127], [429]
Coal, [26]
Coal swamps, the age of, [21] et seq.
Coinage, [114], [176], [201], [319]
Coke, [322]
Collectivists, [375]
Colonies, [394] et seq., [407]
Columbus, Christopher, [300-01] et seq., [335], [433]
Communism (and Communists), [374-75], [417]
Comnenus, Alexius. (See Alexius)