— —, action of, on hydrocyanic acid, xviii, 146.
— —, —, with oil of hemlock, xxxvii, 246.
— — and arsenious acids, a new compound of, xli, 47.
—, —, produced by the Aix waters, xix, 176.
—, —, native, xv, 238.
—, —, in the Rio Vinagro, x, 191.
[Sulphurous acid gas,] a mode of obtaining, xxviii, 360.
— — decomposed by iodine in alcohol, xi, 392.
— —, reaction of the essential oils with, xxxi, 281.
— —, a mode of liquefying, ix, 195.