—, in Massachusetts, white, iv, 40; viii, 14; xxii, 28.
—, —, clouded, viii, 14.
—, —, dove colored, viii, 14.
—, —, elastic, of Lanesboro' and West Stockbridge, viii, 15.
—, —, — and flexible, of Berkshire, Co., ix, 241.
—, —, tortuous layers of, viii, 28.
— in Vermont, xxxv, 390.
— in Connecticut, ii, 141, 165, 219, 222.
— —, verd antique in Connecticut, ii, 165.
— in New York, at Hudson, transition, vi, 371.