—, Dead, level of, xl, 213; xlii, 214.
—, —, analysis of the waters of, xiii, 395; xlviii, 10.
—, —, account of, J. D. Sherwood, xlviii, 1.
Sea-serpent, remarks concerning, J. Bigelow, ii, 147.
—, xi, 196.
—, on the existence of, xii, 375.
—, xxviii, 372.
Sea-serpentism, history of, S. L. Mitchill, xv, 351.
Seal, T., on beryl, iv, 39.
Sealing wax, method of making, xxi, 150.