— in sponges, ii, 363.
—, in an ore of zinc, xvi, 389.
—, cyanide of, a mode of obtaining, xiii, 181.
—, fluoride of, H. B. Leeson, xlix, 205.
— and phosphorus, heat from, xxvii, 200.
— and oxygen, new compound of, (hyperiodic acid) xxviii, 141.
Iolite, analyses of, xlvi, 383.
—, in Connecticut, xxii, 389.
—, in Massachusetts, xxxiii, 399.
—, decomposed varieties of, C. U. Shepard, xli, 354.