—, new cyanide of, xlviii, 191.
—, fulminating, ii, 350; xlviii, 192.
—, medical uses of, xvi, 385.
—, method of refining, xvii, 177.
—, mosaic, xiii, 174.
— oxides, purple of Cassius, ii, 350; xx, 192; xxviii, 145; xlviii, 192.
—, native, in Canada, F. H. Baddely, xxviii, 112.
—, —, at New Fane, Vt., xii, 177; xxii, 63.
—, —, in Maryland, xvii, 202.
—, —, in Virginia, in talcose slate, H. H. Hayden, xx, 164.