Crassatella Lyellii.
Cruickshanks, Mr., on elevation near Lima.
Crystals of feldspar, gradual formation of, at Port Desire.
Cumbre, Pass of, in Cordillera.
Cuming, Mr., on habits of the Mesodesma. —on range of living shells on west coast.
Dana, Mr., on foliated rocks. —on amygdaloids.
Darwin, Mount.
D’Aubuisson, on concretions. —on foliated rocks. Decay, gradual, of upraised shells.
Decomposition of granite rocks.
De la Beche, Sir H., his theoretical researches in geology. —on the action of salt on calcareous rocks. —on bent cleavage-laminae.