—, —, of Tarapaca, mode of refining, xliv, 7.
Nitre, origin of, xxviii, 292.
—, native, i, 146.
—, —, in caves of Kentucky and elsewhere, viii, 323.
—, —, in Africa, i, 147.
[Nitric acid,] on fuming, Mitscherlich, xx, 185.
— —, remarks on its solvent power on metals, Millon, xlvii, 191.
— —, J. Liebig's new test for, xvii, 176.
— —, ibid, J. W. Bailey, xxxii, 85.
— —, effect on sulphuretted hydrogen, viii, 375.