—, analyses of lepidolite and a yellow, xxxvii, 361.
—, of Chester, Mass., crystallization of, viii, 250.f
—, use of, in chemical analyses, xxiv, 373.
—, black, a substitute for glass in spectacles, xviii, 374.
—, models of crystals made of, xxxviii, 187.
—, in Canada, viii, 67.
—, in Connecticut, i, 353;
–plumose, vi, 251.
—, in Massachusetts, i, 113; ii, 237; iv, 55 (green); vii, 255; viii, 41, 235;
–prismatic, v, 399; vii, 30, 255; viii, 41; xiv, 219;