Capillary attraction, _T. Strong_, xviii, 70. ---- ----, influence of electricity on, _J. W. Draper_, xxvi, 399. ---- action of different solutions, xiv, 384. ---- ----, of fissures, viii, 377; ix, 193. ---- ----, a singular instance of the passage of mercury along a lead bar, _J. Henry_, xxxviii, 180. ---- tubes, electricity produced by ascent of fluids in, ix, 193. Capitol, at Washington, dimensions of, xvi, 168. Carbon, supposed crystallization of, _C. C. C. Cohen_, xx, 167. ----, combustibility of, increased by platina and copper, xviii, 147. ----, electro-magnetic property of, xviii, 175. ----, fused, see _Charcoal_. ----, on the supposed conversion of, into silicon, xli, 208; xlii, 193. ----, a compound body, _R. Rigg_, xlvii, 211. ----, battery, xxxix, 132. ----, ----, _B. Silliman, Jr._, xliii, 393; xliv, 180.^f Carbonates and calcareous marl, apparatus for analyzing, _W. B. Rogers_, xxvii, 299.^f ----, new means of analyzing, _W. B._ and _R. E. Rogers_, xlvi, 346.^f ----, alkaline, decomposition by the light of the sun, _J. W. Draper_, xlvi, 398. Carbonate of lime in calcareous substances, new instrument for estimating, _J. L. Smith_, xlv, 262.^f ---- ----, and arragonite, _Becquerel_, xxiii, 387. ----, of potash, free from silica, preparation of, xlix, 195. ----, of potash and soda, mixture of pure, xlix, 195. Carbondale coal mine, xviii, 319. Carbonic acid of the atmosphere, from a memoir by _Saussure_, xvi, 214. ---- ----, amount of, in the atmosphere, xx, 183. ---- ----, of wells, means of removing, xxxviii, 206. ---- ----, on the removal of, from wells, _O. P. Hubbard_, xlii, 165. ---- ----, decomposition of, _C. Despretz_, xx, 186. ---- ----, ----, by the light of the sun, _J. W. Draper_, xlvi, 398. ---- ----, disengaged by the roots of plants, xlv, 227. ---- ----, non-decomposition of, by plants, xxxiv, 44. ---- ----, condensation of, _M. Faraday_, vii, 354. ---- ----, liquid, properties of, _M. Thilorier_, xxxi, 402. ---- ----, solidification of, _M. Thilorier_, xxxi, 163, 404. ---- ----, ----, _J. Torrey_, xxxv, 374. ---- ----, liquefaction and solidification, and apparatus for, figured, _J. K. Mitchell_, xxxv, 346.^f ---- ----, apparatus for solidifying, _J. Johnston_, xxxviii, 297^f; xlii, 203. ---- ----, ----, ----, _R. Addams_, xxxv, 301. ---- ----, new instrument for solidifying, _E. N. Horsford_, xlix, 206.^f ---- ----, heat from solid, xlvi, 215. ---- oxyd, mode of preparing, xiii, 186. ---- ----, obtained free from carbonic acid, _J. D. Mitchell_, xxv, 344. ---- ----, free from carbonic acid, on _Prof. Mitchell's_ mode of preparing, _L. D. Gale_, xxvii, 129. ---- ----, method of separating carbonic acid from, _R. Hare_, xxiv, 252.^f ---- ----, disease attributed to, in a manufactory, vi, 199. Carbonicometer, by _R. Hare_, xii, 48.^f Carboniferous formation, see under _Coal_.