—, nitrate of, reduced by remaining in a pasteboard box, xviii, 400.
—, —, pure, not blackened by sun's rays, xxxv, 298.
—, native, at Huntington, Conn., vi, 230.
—, —, in New Jersey, v, 401.
—, —, of Davidson Co., N. C., xli, 183, 349.
—, —, in Michigan, Lake Superior, xli, 185; xlix, 81.
— of Lane's mine, analysis of, W. W. Mather, xxvii, 256.
—, in the Southampton lead mines, Mass., xxii, 63.
—, fruitless search for, in Ohio, xxv, 224.
— ores, reduction of, W. W. Mather, xxiv, 218.