—, formed from beat leaves, xv, 180.
Sampson, W., notice of a cetaceous animal, xxiii, 301.f
San Lorenzo, Peru, fossils from, xxxviii, 201.
Sand, blown from shore, viii, 392.
—, rate of flowing, and angle of a heap of, xix, 190.
—, pressure of, xix, 190.
—, of Lake George, iv, 46.
—, white siliceous, of Staten Island, xxxvi, 21.
—, lightning tubes in, xx, 396.
Sand hills, iii, 27.