Carburet of sulphur decomposed by weak electric action, xviii, 153. Carburetted hydrogen, combinations of, _M. Dumas_, xxiii, 377. ---- ----, in balls of carbonate of lime, xlii, 214. ---- ----, source of, in N. York state, xv, 236. ---- ----, from a mill-pond near West Town, Chester Co., Penn., xxxix, 200. Caricography, see under _Botany_. Carnelian, vegetable mailer in, xxiv, 200. ----, localities in Connecticut, i, 135. ----, in Massachusetts, i, 113, 115. Caroline Islands, account of, by a Russian expedition, xxviii, 114. _Carpenter, G. W._, experiments on the varieties of cinchona bark, ix, 363. ----, on common salt, and on the brine springs of the U. States, xv, 1. ----, on the use of Piperine, xiii, 326. ----, on rhubarb, xiv, 33. ----, on opium, xiii, 17. ----, on Peruvian bark, xvi, 28. ----, on a new preparation of Copaiva Balsam, xvi, 40. ----, the vesicating principle of Cantharides, xxi, 69. ----, some new medical preparations, xxii, 293. ----, inflaming of a quantity of alcohol in the store of, xxiii, 401. _Carpenter, W. M._, bituminization of wood in the recent era, xxxvi, 118.^f ----, fossil tooth in Louisiana, xlii, 390.^f ----, fossil teeth of mastodon and horse, in Louisiana, xxxiv, 201.^f ----, notices in Opelousas, Attakapas, &c., xxxv, 344. ----, hailstorm in Louisiana, xxvii, 171. ----, formation of fogs, xliv, 40. ----, meteorological register at Jackson, La., 1839-1841, xliv, 49. ----, methods used in obtaining the mean temperatures of places, and on the supposed difference between temperature of the air and of the earth, xliv, 50. Carpolithes Smithii, xlv, 402. Carrara marble, shown to be altered oolite, xxx, 176. _Carson, A. W._, on currents in water, xxix, 340.^f _Carver, S. D._, notice of a meteoric stone which fell in Maryland, Feb., 1825, ix, 351. Caryophyllia in marl, New Jersey, xvii, 288. Caspian sea, height of the Black sea above, xl, 320. Cassius, purple powder of, ii, 350; xx, 192; xxviii, 145; xlviii, 192. Casting, metallic, improvement in, vii, 190. Casts, plaster, method of coating, xxx, 171. _Caswell, A._, on zinc, as a covering for buildings, xxxi, 248. Catacecaumene, volcanic region of, xxxiii, 95. Catalytic action, _Mercer_ on, xliv, 351. Caterpillars, destruction of, iv, 392; xxvi, 189. ----, emigration of a colony of, _J. Skene_, ix, 284.^f Catlin, G., account of a journey to the Côteau des Prairies, and description of the red pipestone quarry and granitic bowlders there found, xxxviii, 138. Catlinite, or Indian pipestone, analysis of, _C. T. Jackson_, xxxv, 388; xxxvii, 393. Catskill mountains, account of, _H. E. Dwight_, ii, 11. ---- ----, scenery, geology, &c. of, _J. Pierce_, vi, 86. ---- ----, _D. W. Barton_, iv, 249.^f Cattle of Chillingham Park, xxxv, 316. Caustics by reflection, instruments for illustrating, _E. S. Snell_, xlix, 24.^f