—, experiments on two varieties made from the magnetic ores of Essex Co., N. Y., W. R. Johnson, xxxvi, 94.f

—, manufacture of, by use of anthracite, xxxiii, 266.

—, —, with the hot blast, xxix, 356.

—, —, with the hot blast, T. Clark, xxxi, 180.

—, —, by the hot and cold blast, comparative strength of, Fairburn, xxxiii, 292.

—, —, ibid, comparative composition of, T. Thomson, xxxiv, 21.

—, —, gas obtained by water applied in, J. S. Dawes, xxxv, 303.

—, oxides of, separation of, J. Liebig, xxiii, 379.

—, —, effect of, on soil, xli, 159.

— for railways, D. Mushet, xxxiv, 15.