—, —, in Virginia, gray sulphur, analysis of the water of, C. U. Shepard, xxx, 100.
—, —, —, white sulphur, xxix, 94.
—, —, —, red sulphur, xxix, 96.
—, —, in Indiana, i, 133.
—, —, on the St. John, Florida, xxv, 170.
—, —, of Florida, xxxv, 51.
—, —, of Texas, xxxvii, 215.
—, sulphuric acid or sour, in New York state, xv, 238; xxxvi, 10.
[—, thermal,] K. von Nidda's classification of, xxxvi, 255.
—, —, of volcanic regions, G. Bischof, xxxvi, 254.