Central forces, T. Strong, xvi, 293; xvii, 69, 329; xviii, 67; xix, 46; xx, 65, 291; xxi, 66, 334; xxii, 132, 343; xxiv, 40.
Cerium, atomic weight of, xlvii, 190.
—, and didymium, method of separating the oxides of, xlvi, 206.
Cetine, a new carburetted hydrogen, xxx, 180.
Ceylon, mineralogy of, vi, 192.
—, notices of, viii, 186.
Chabazite, analysis of, C. Cramer, xxx, 366.
—, localities of, in Canada, viii, 65.
—, in Connecticut, xxxv, 179.
—, in Massachusetts, i, 114, 134; vi, 224; vii, 254; viii, 45.