Coloe Palus, in connection with double canals, [257], [258], [263].

Color, [74], [148];

of Mare Erythraeum, [122].

Confervæ, in almost boiling geysers, [349], [358].

Cretaceous era of the earth, [136], [143], [151], [152].

Crystals, conditions of formation, [357].

Dana, [131], [139], [140].

Dark Regions, [122-125];

thought to be seas, [110], [111];

named in accordance, [110], [113];