Cereal, edible grain.
Champlain Epoch, a name derived from the beds on the borders of Lake Champlain. The beds are subsequent in origin to the glacial epoch.
Chert, an impure variety of flint.
Clavicle, the collar-bone.
Conglomerate, rock made of pebbles cemented together.
Coronoid, the process of the ulna and lower jaw.
Cosmogony, the science of the origin of the world or universe.
Cranium, the skull.
Crannoges, small islets in the lakes of Ireland and Scotland, used by the ancients as places of habitation.
Crucible, a vessel capable of enduring great heat, and used for melting ores, metals, etc.