Schaeffer, G. C., on the meteors of August, 1837, and November, 1832, xxxiii, 133.
—, meteor of August, 1840, xxxix, 332.
Schaeffer, F. C., peat of Dutchess Co., N. Y., i, 139.
—, localities of minerals, i, 236.
Schænus effusus, northern limit of, H. B. Croom, xxvi, 315.
Scheerer, on aventurine feldspar, xlix, 394.
—, on polycrase and malacrone, xlix, 394.
Schenck, transit of Mercury, May, 1832, xlix, 148.
Schimpfer, theory of boulders quoted and questioned, xxxvi, 331, 332.