—, —, ibid, alternating with granite rocks, v, 247.
—, —, passing above into a secondary fossiliferous limestone, v, 247.
—, effect of trap dikes on, xxix, 351.
—, hydraulic, of New York, xxxix, 96; xlvi, 29.
—, —, in the Appalachian chain, xxxvii, 381.
—, —, magnesian character of, xxxvii, 381.
—, polished, of Rochester, C. Dewey, xxxvii, 240.
—, siliceous, (argentine) in Massachusetts, v, 268.
Limonia acidissima, v, 295.
Lincoln, B., notice of a water spout, xiv, 171.f