—, action of air and water on, Mallet, xliv, 355.
—, steel and cast iron, remarks on, xxxviii, 121.
—, method of bronzing, xxx, 173.
—, — of browning, ix, 168.
—, cementation of, by carburetted hydrogen, xxviii, 362.
—, cold short, method of purifying, xxx, 173.
—, chlorine in, C. U. Shepard, xliii, 359.
—, corrosion of, by salt water, xxxiii, 286.
— when cutting, action of, in motion, on tempered steel, ix, 324; x, 127; xi, 384.
—, deoxidation of the salts of the peroxide of, C. F. Schönbein, xlix, 203.