— —, on the change of color of, xx, 193.

— of soda, Labarraque's method of using, xix, 365.

— of soda, lime, &c., on the nature of, L. C. Beck, xiv, 251.

— of sulphur, xxiii, 382.

Chlorite, in Connecticut, i, 354; vi, 228; viii, 259; xxxiii, 165.

—, in Massachusetts, i, 113; iv, 42; vi, 228, 248; viii, 52.

—, in New York, ix, 44.

—, in New Jersey, v, 239.

—, in Pennsylvania, iv, 54; viii, 238; x, 222.

—, in Rhode Island, viii, 228, 232.