— trough, Watkins's, xvi, 215.
Galvanism, anthracite a conductor of, v, 200.
—, charcoal fused by, v, 108, 361; viii, 147, 288; xxxviii, 190.
—, — —, L. Vanuxem's examination of, viii, 292.
—, on colors supposed to be transferred by, through animal substances, A. Jones, xxi, 316.
—, A. Crosse's experiments in, see [Crosse.]
—, crystallization of metals by, G. Bird, xxxiii, 267.
—, —, M. Becquerel, xvii, 383.
—, crystals and insects, A. Crosse, xxxv, 125.f
—, engravings copied by, von Kobell, xlviii, 221.f