—, allusion to discoveries electro-magnetism, v, 388.

Oerstedite, xxx, 179.

Ogden, H. W., on water-spouts, xxix, 254.

Ohio, notes on, i, 207, 311.

—, Medical College of, i, 311.

—, Belmont Co., scenery, geology, mineralogy, botany, &c., of, C. Atwater, i, 226.

—, winds of, C. Atwater, i, 276.

—, vegetable impressions in the coal strata of Zanesville, E. Granger, iii, 5.f

—, facts relating to certain parts of, S. P. Hildreth, x, 1;

–Washington Co., soil, &c., 2;