—, separation of, from manganese, xiii, 173.
—, method of silvering, xxx, 169.
—, on the different states of, xiii, 159.
—, state of, in soils, R. Phillips, Jr., xlix, 394.
—, use of, for stereotyping, xxvi, 192.
—, sulphur in bar, xxviii, 71.
—, sulphuret of, formation of, xxxi, 74.
— boat, iii, 371.
— bridge in Prussia, xii, 197.
— cement, xxx, 171.