—, of gneiss and granite on the Côteau des Prairies, G. Catlin, xxxviii, 142.
—, of the Canadian lakes and valley of the St. Lawrence, C. Lyell, xlvi, 314.
—, the origin of, remarks on, P. Dobson, x, 217.
—, Murchison's citation of Dobson's views on, xliii, 200.
—, transported by ice, in the polar current, W. C. Redfield, xxxii, 351.
—, on the supposed transportation of, J. E. DeKay, xiii, 348.
—, buoyancy of, at great depths, xxviii, 111.
—, gravel, &c., remarks on, Sedgwick, xxxiii, 287.
—, or erratic blocks, theory of, B. Struder, xxxvi, 326.
—, glacial theory of Agassiz, xlii, 352.f