— —, fossil footprints in, E. Hitchcock, xxix, 307f; xxxi, 174; xxxii, 174; xli, 165; xlvii, 113, 292f, 390; xlviii, 61.

— —, —, —, J. Deane, xlv, 178; xlvi, 73f; xlvii, 381, 399; xlviii, 158f; xlix, 79f, 213.f

— —, —, —, C. Lyell on, xlv, 394.

— —, —, —, W. C. Redfield, xxxiii, 201.

— Reserve, Ohio, notice of, xxxi, 21.

Conrad, T. A., notes on American geology, xxxv, 237.

—, on characteristic fossils, xxxv, 237, 246.

—, temperature of different geological epochs, xxxv, 239.

—, cause of the features of the U. States, xxxv, 244.

—, on the tertiary fossils of America, xxiii, 204, 339.