—, 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.