—, in argillaceous minerals, xv, 182.
—, in the rust of iron, ix, 191.
—, in native oxide of iron, xxi, 155.
—, disengaged from growing plants, x, 190.
—, decomposition of salts of, at the ordinary temperature, H. B. Jones, xlix, 392.
—, bitungstate of, W. W. Mather, xxvii, 264.
—, commercial carbonate of, M. Scanlan, xxxv, 297.
—, preparation of nitrate of, R. Hare, v, 346.
Ammonia and Magnesia, carbonate of, xlix, 200.
Ammonia and Zinc, carbonate of, xlix, 200.