—, on the detection of, J. L. Smith, xl, 278; xlii, 75.f

—, tests for, iii, 354; iv, 155; xliv, 213.

—, on the iodide of potassium a test for, J. P. Emmet, xviii, 58.

—, tobacco a remedy for, xxxi, 188.

—, oxide of iron an antidote for, xxviii, 135.

—, effect of, on vegetation, Daubeny, xxxi, 346.

Arsenical iron, in N. York, xxi, 326.

— —, (Danaite) in N. Hampshire, analysis of, A. A. Hayes, xxiv, 386.

— — —, identical with mispickel, xlvi, 384.f

Arsenious acid and sulphuric, a new compound of, xli, 47.