C.

Cacoxenite, analysis of, xviii, 391. ----, in New York, xl, 76.

Cadmia in the Salisbury furnace, viii, 57. ----, in N. Jersey, of furnace origin, called ancramite, v, 235, 399; vi, 180. ----, in a furnace at Bennington, Vt., xii, 168.

Cadmium, sulphuret of, associated with prehnite, xii, 52.

Caffeine, viii, 381.

Calamine in Virginia, xliii, 169. ----, with the lead ore of the west, xii, 376. ----, in Michigan, xli, 185. ----, electric, in Michigan, xli, 185.

Calamites, vii, 180.

Calc spar, formation of, v, 405. ---- ----, and arragonite, _Becquerel_, on the different formation of, xxiii, 387. ---- ----, in Connecticut, vi, 246. ---- ----, Massachusetts, i, 115; vii, 255; viii, 32. ---- ----, New Jersey, ii, 194; xl, 69; xliv, 60. ---- ----, New York, iv, 45; ix, 251; xxv, 346; xl, 76. ---- ----, Nova Scotia, xxx, 347.^f ---- ----, Pennsylvania, x, 222. ---- ----, western states, iii, 67; vii, 47. ---- ----, of Rossie, N. Y., with figures of crystals, xlvi, 33.^f ---- tufa in Massachusetts, viii, 34. ---- ----, in New York, vii, 252. ---- ----, in Western States, vii, 47.

Calcium, atomic weight of, xlvii, 189. ----, obtained by _R. Hare_, xxxvii, 267; xxxviii, 115, 181, 189; xxxix, 362; xl, 293.^f

Calculating machine, Constants, _Babbage's_, xxviii, 64.

Calculi, chemical examination of, by _J. F. Dana_, iv, 149. ----, urinary, composition of, xvii, 190. ----, gouty, xlvii, 197. ----, in the ovary of a turtle, _J. E. Muse_, xxvii, 163.

Calculous affections, _E. D. Smith_, iii, 300. ---- ----, use of alkaline pastils in, xi, 388.

Calculus, higher, fundamental principle of, demonstrated by the method of indeterminates, xvii, 74. ----, differential, first principles of, _T. Strong_, xlv, 269.

California, climate of, _J. Ball_, xxviii, 15. ----, elevation of, during the tertiary epoch, _T. A. Conrad_, xxxv, 245.

Calligraphy, method of, by _M. Le Roy_, vii, 377.

Calomel, remarks on, xlvii, 193.

Caloric, a cause of galvanic currents, _J. P. Emmet_, xxv, 269. ----, the cause of all kinds of attractions, _S. L. Metcalf_, xxvii, 153. ----, see farther, _Heat_.

Calorificator, xxx, 168.

Calorimeter, new, _A. Ure_, xxxviii, 109.

Calorimotor, _R. Hare_, i, 413^f; v, 94. ----, magnetic effects of, v, 357. ----, remarks on _Dr. Hare's_, v, 364. ----, for galvano-ignition, _R. Hare_, xxxii, 284.^f ----, mode of increasing shocks, _C. G. Page_, xxxi, 137.^f

Calstronbarite, supposed new mineral, _C. U. Shepard_, xxxiv, 161. ----, not a mineral species, xliii, 366.

Cambrian system, _Sedgwick_, xxxvii, 220.

Cambridge, England, improvements in, xlvi, 403.

Cambridge course of mathematics, review of, v, 304.

Cameos, from shell, xxxii, 257.

_Campbell, A. W._, an electro-magnetic engine, xxxv, 343.^f

Camphor, crystallization of, _M. John_, xiii, 175. ----, odor of, destroyed temporarily by electric action, xix, 380.

Canada, maps of, in course of preparation, xvi, 380.

Canada, vegetable coloring materials in, xviii, 186. ----, cave containing bones at Lanark, ix, 354. ----, supposed volcano in, xxx, 238, 241. ----, highest mountain in Lower, xxx, 239. ----, geology and minerals of the vicinity of Kingston, xviii, 104. ----, transition rocks of the Cataraqui, _R. H. Bonnycastle_, xviii, 85; xx, 74^f; xxiv, 97^f; xxx, 233.^f ----, various fossils in, _J. Bigsby_, viii, 60. ----, geological survey of, ordered, xlviii, 404.

Canals, mathematical problems relating to contents of, _D. C. Lapham_, xxvii, 127.^f ----, navigable, _Girard_ on, iv, 102; vii, 286. ----, Amsterdam, v, 181. ----, in the U. States, extent of, _Prof. Henry_, xxxiii, 296. ----, method of conducting surveys of, in the state of New York, _E. F. Johnson_, xxiv, 19.^f ----, Erie, tolls on, x, 398. ----, of Ohio, xx, 416; xxv, 241. ----, Ohio and Pennsylvania, xxxi, 40. ----, of Pennsylvania, _E. Miller_, xxv, 85; xxvi, 108. ----, route of the Michigan and Illinois, _C. U. Shepard_, xxxiv, 138. ----, Louisville and Shippingsport, Ky., xiv, 65.^f

Canal, Welland, U. C., account of, _W. H. Merritt_, xiv, 159.^f ----, to connect Lake Superior with Lake Huron, xlvi, 213. ----, locks at Cincinnati, Ohio, plan of, _D. Lapham_, xxiv, 70.^f ----, navigation, mode of, vii, 190.

Cancer, fossil, in New Jersey, xvii, 287.

Cancers, cured by surgery, xii, 386.

Candle, motion of the melted grease in warming, _C. Fox_, xxxiii, 198.^f ----, ---- ----, note on, xl, 148.

Candlenut tree, of the Sandwich Islands, xxxiv, 209.

Cannel coal, see _Coal_.

Canova, statue of, by _Ceccarini_, iv, 197.

Cantharides, vesicating principle of, _G. W. Carpenter_, xxi, 69.

Cantharidin, in the potato fly, _J. F. Dana_, ii, 137.

Caoutchouc, electrical properties of, xx, 404. ----, _Mitchell's_ mode of working, xix, 195. ----, sheet, xvii, 399. ----, cloth coated with, xxxiii, 400. ----, rendered impermeable to gas, xlvii, 194. ----, mineral, vi, 370; xl, 215. ----, ----, in Connecticut, vi, 370.

Cape of Good Hope, geology, scenery, &c., _G. Champion_, xxix, 230. ---- ---- ----, fossils of, xlix, 213.

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_.

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

Caucasus range, geology and floods of, xxxvii, 348. ---- ----, basalt of, xxxvii, 348.

Caves in Tennessee, _J. H. Kain_, i, 428. ---- in Kentucky, nitre in, viii, 323. ---- of the Greenbrier, Virginia, xxix, 93. ---- in Maryland, containing saltpetre, xxvii, 33. ----, at Sunderland, Connecticut, vii, 19. ----, Ball's, Schoharie, notice of, xxvii, 368. ----, in the limestone of Western Massachusetts and Vermont, viii, 15. ----, Wier's, in Virginia, i, 59, 64. ----, at Malbay, L. C., v, 212.^f ----, freezing, in Russia, _R. I. Murchison_, xliv, 206. ----, ----, explanation of, _J. Herschel_, xliv, 206. ----, bone, at Kirkdale, Yorkshire, _W. Buckland_, viii, 158, 317. ----, ----, at Mendip Hills, _M. Long_, xxxv, 304. ----, ----, of Cefn, in Denbigshire, xxxi, 341. ----, ----, at Plymouth, England, ii, 144; xxxiii, 106. ----, ----, at Kuhloch, and elsewhere, in Germany, viii, 319, 321. ----, ----, in France, xxi, 56; xxiii, 388. ----, ----, in New Holland, xx, 380. ----, ----, bank of the Susquehannah, xxxix, 399. ----, ----, at Lanark, Upper Canada, ix, 354.

Cavolinite, xi, 259.^f

Celestine, analysis of, vii, 369. ----, of Lake Erie, ii, 241, (called heavy spar);--iii, 363; iv, 279. ---- ---- ----, analysis of, _G. T. Bowen_, iv, 324. ----, of Sicily, viii, 205.

Cellules, germination of, _M. Vogt_, xlv, 213.

Celtic antiquities of America, _J. Finch_, vii, 149.

Cement, fusible, _H. F. Löwitz_, xvii, 81.^f ----, Roman, ix, 192. ----, of Seyssel, xxxiv, 383. ----, for glass, &c., xxiii, 201. ----, for porcelain, &c., xviii, 145; xxi, 149. ----, for iron water pipes, xviii, 394. ----, as a covering of houses, ii, 220. ----, from shells and oil, xxx, 168. ----, from iron filings, xix, 190. ----, water, lime for, iii, 230. ----, ----, from Southington, Ct., xiii, 382. ----, of the Castle Rock, Quebec, _F. H. Baddeley_, xxviii, 367. ----, _Fuchs_ on, xxxii, 200.

Census, earliest, of the U. States, xxxiii, 278.

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. ----, in New Jersey, v, 239; xliv, 58. ----, in New York, ix, 41. ----, in Nova Scotia, xxx, 349. ----, in Pennsylvania, xiv, 7. ----, supposed, from Maryland, near Baltimore, (Haydenite,) i, 307; xlvi, 379.^f

Chæropotamus, xxxvii, 231.

Chalcedony, stalactites of, New South Shetland, iv, 26. ----, localities of, in the U. States, i, 132, 134; ii, 197; iii, 71; vii, 49; viii, 64; x, 219, 224; xviii, 78.

Chalk, coralline animalcules in, xxxix, 205. ----, corals and entomostraca in, xxx, 382. ----, of France, viii, 216. ----, see farther, _Cretaceous_.

Chalybeate waters, action of cork on, viii, 390. ---- ----, artificial mode of making, viii, 105; xi, 392.

Chameleon, change of color, xxviii, 79.

_Champion, G._, geology, scenery, &c., of the Cape of Good Hope, xxix, 230.

_Channing, W. F._, observations on photographic processes, xliii, 73.

_Chapin, A. B._, junction of trap and sandstone, at Wallingford, Ct., xxvii, 104.^f

_Chaptal, J. A._, biography of, xxvi, 127.

Charcoal, remarks on, xii, 389. ----, manufacture of, xxi, 156. ----, a cheap mode of manufacturing, xxvi, 188. ----, decoloring action of, xvi, 393. ----, bitterness of some substances removed by, xxi, 374. ----, report on Dumont's prepared, xxiii, 346.^f ----, animal, effect of, in preventing the putrefaction of stagnant water, x, 189. ----, ----, action of, _R. Warrington_, xlix, 393. ----, fusion of, _B. Silliman_, v, 108, 361; vi, 341, 349, 378; viii, 147; x, 109, 119. ----, ----, _J. Griscom_, v, 364. ----, ----, _R. Hare_, viii, 288; x, 111, 118; xxxviii, 190. ----, ----, _L. Vanuxem_, viii, 292; x, 102.

Charlatanism, or selling pharmaceutical preparations under false denominations, in Paris, xviii, 401.

Charring wood, new mode of, by _I. Doolittle_, xvii, 395.^f ---- ---- at low temperatures, xx, 189.

Chart, magnetic, of the U. States, _E. Loomis_, xxxiv, 290^f; xxxix, 41.^f

Chathamite, xlvii, 350; xlviii, 175, 179.

_Chauvenet, W._, solution of a problem in sailing, xlvi, 79.

Cheirotherium, footprints of, in England, xxxvi, 394, 397; xxxvii, 223.

Chemical attraction, modified by quantity of matter, _E. Mitchell_, xvi, 234. ---- classification, _O. W. Gibbs_, xlix, 384. ---- equivalents, Wollaston's scale of, xvi, 371. ---- ----, scale of, improved, by _L. C. Beck_ and _J. Henry_, xiv, 202. ---- ----, circular scale of, _J. Finch_, xviii, 196. ---- examination of some morbid animal products, _J. F. Dana_, iv, 149. ---- ----, of the odorous fluid of the skunk, iv, 391. ---- force of the indigo-tithonic rays, instrument for measuring, _J. W. Draper_, xlvi, 217.^f ---- manipulation, washing bottle in, xxxi, 292.^f ---- nomenclature, _Berzelius_ on, xxii, 248. ---- ----, _R. Hare_, xxvii, 63; xlix, 249. ---- science, state of, in 1826, _D. Olmsted_, xi, 349; xii, 1. ---- symbols, _Whewell's_, xxi, 369. ---- theory, and a notice of Gorham's Chemistry, iii, 330.

Chemistry, _Dumas's_ theory of substitution in, xxxviii, 114. ----, remarks on Berzelius's treatise, _R. Hare_, xxvii, 61. ----, Gorham's, notice of, iii, 330.

Cheese, potato, xviii, 395; xxiii, 202.

Chené, and the oil it affords, ii, 264.

Chert and siliceous petrifactions, Antigua, _S. Hovey_, xxxv, 79.

_Chevallier, A._, on the uses of chlorides and chlorine, xxiii, 129.

_Chevet, F._, experiments on bichloruret of sulphur, and certain carburets of hydrogen, xlii, 71.

Chiastolite, analysis of, xxviii, 395. ----, in Massachusetts, vii, 51. ----, in Vermont and New Hampshire, v, 40.

Chile, _Bartero_ on some of the plants of, translated by _W. S. W. Ruschenberger_, xix, 63, 299; xx, 248; xxiii, 78, 250. ----, on the rise of the coast of, xxviii, 236; xxx, 110.

_Chilton, G._, improved raingauge, vii, 326.^f ----, analyses of the principal brine springs of New York, vii, 345. ----, analysis of the Clinton mineral water, xviii, 346.

Chiltonite, a variety of prehnite, xlvi, 32.

Chimneys, moveable hood for, xxx, 170.^f

China, on the language of, _Du Ponceau_, xxxviii, 398.

Chinese collection, _Dunn_, xxxv, 391. ----, fire, composition and properties of, _J. Cutbush_, vii, 118. ----, dictionary, by _Morrison_, iii, 377. ----, epicures, tongues of ducks eaten by, xxxi, 193. ----, frontier, notice of, xvii, 32. ----, metallic alloy called _packfong_, composition of, xv, 396. ----, paper, xiii, 171. ----, process for making sheet lead, vii, 391. ----, tea hills, excursion to, xxxi, 194.

Chios, college of, iii, 381.

_Chipman, N._, on moving stones in lakes and ponds, xiv, 303.

Chitteningo fossil tree, v, 251; xviii, 354.

Chlorate of potash, economical process for, _A. A. Hayes_, xvii, 408. ---- ----, as made by _S. Guthrie_, xxi, 92.

Chloric ether, new mode of preparing, _S. Guthrie_, xxi, 64; xxii, 105. ---- ----, properties and medical effects of, xxi, 405. ---- ----, preparation of, _A. A. Hayes_, xxii, 163.

Chlorine, theory of, ii, 362. ----, controversy regarding the nature of, xvii, 230. ----, _Davy's_ views respecting, xvii 230. ----, atomic weight of, xlvii, 188. ----, allotropism of, as connected with the theory of substitution, _J. W. Draper_, xlix, 346.^f ----, an antidote to prussic acid xxi, 157. ----, explosive reaction of, with hydrogen, _R. Hare_, xxix, 243.^f ----, ---- ----, ----, iii, 341. ----, a remedy in phthisis, xviii, 161. ----, remedy against the dangers of inspiration of, xiii, 393. ----, solubility in water, xlvii, 191. ----, relations of, with hydrogen _J. W. Draper_, xlix, 355.^f ----, and chlorides, remarks on, xiv, 382. ---- ----, uses of, _A. Chevallier_, xxiii, 129. ----, new compound of, with phosphorus and sulphur, by _M. Serullas_, xix, 382.

Chlorides, alkaline, a means of disinfection, xi, 197; xiii, 169. ----, efficacy of, xviii, 159. ----, and chlorine, uses of, _A. Chevallier_, xxiii, 129. ----, experiment to determine the nature of, xxi, 368.

Chloride of lime, xv, 391; xvi, 387. ---- ----, or chlorine, test of the strength of, xvii, 170. ---- ----, manufacture of, at Glasgow, _T. Thomson_, xli, 48. ---- ----, manufacture of, _G. W. Carpenter_, xvi, 177. ---- ----, use of, in bleaching, in making paper, xix, 166. ---- ----, estimation of the bleaching power of, xxii, 354. ---- ----, disinfecting powers of, xix, 177. ---- ----, disinfection at the Morgue at Paris, xxi, 149. ---- ----, used in psora, xvi, 395. ---- ----, use of, in the navy, xix, 164. ---- ----, action of, on alcohol, _E. Soubeiran_, xxiii, 134. ---- of silver, discolored, experiments on, xxi, 369. ---- ----, 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. ----, in Vermont, iv, 276; vi, 228. ----, remarks on, xlvii, 342. ----, slate of Connecticut and Vermont, vi, 27. ----, ----, in New Jersey, v, 29.

Chlorobenzoyle, xxvi, 270, 277.

Chlorohydric acid, experiments by _Macaire_ and _de la Rive_ with reference to, xi, 393. ---- ----, mode of preparing pure, from the muriatic acid of commerce, _R. Hare_, xxxix, 371. ---- ----, fumigations with, at Plattsburgh in 1819, viii, 200. ----, see _Hydrochloric_.

Chloro-hydrogen blowpipe, xvii, 211.

Chlorophæite, iv, 245. ----, at Turner's Falls, Mass., x, 393.

Chlorophyl, production of, by yellow light, _D. P. Gardner_, xlvi, 1.^f

Chlorophyllite, _C. T. Jackson_, xli, 161. ----, description and analysis of, xlvi, 377. ----, a decomposed variety of iolite, _C. U. Shepard_, xli, 357.

Chlorovinic and chlorovinous acids, _A. A. Hayes_, xxii, 141.

Cholera, _Mackintosh_ on, xxxiv, 49. ----, miscellaneous notices respecting, xxv, 174.

Cholesterine, action of potash on, _J. L. Smith_, xliv, 60.

Chondrodite, account of, v, 203, (called yellow mineral); v, 245. ----, crystal of, _J. D. Dana_, xlvi, 381.^f ---- in New York, v, 30; viii, 92; ix, 244; xix, 223; xxi, 325.^f ---- in New Jersey, v, 30, 245; vi, 250. ---- in Pennsylvania, viii, 239; xiv, 17.

Christianite (anorthite), xi, 261.^f

Chromate of potash, to test the purity of, _S. Zuber_, xxiv, 372. ---- ----, (bichromate,) manufacture of, at Glasgow, xli, 50.

Chromatype, _R. Hunt_, xlvi, 396.

Chromic iron of Maryland, analysis of, _H. Seybert_, iv, 321. ---- ---- from Cuba, analysis of, _J. C. Booth_, xxxviii, 243. ---- ----, remarks on, xxvii, 18, 20. ---- ---- in Massachusetts, ii, 374. ---- ---- in Delaware, iv, 53. ---- ---- in Maryland, xxiv, 349, 355^f; xxvii, 18, 20.

Chromium, _Vauquelin's_ process for obtaining, xxi, 375. ----, on the combinations of, _A. A. Hayes_, xiv, 136. ---- oxide, crystals of, xxviii, 396. ----, sulphate of oxide, _M. E. Kopp_, xlviii, 189.

Chronometers, remarks on, xxix, 297. ----, _Dent's_ improvements, xliv, 161. ----, errors of, _E. J. Dent_, xlv, 83.^f ----, sea and land rates of, _Parkinson_ and _Frodsham_, xxvi, 121. ----, rate varied by the density of the medium containing, x, 185. ----, purification of olive oil for, xx, 166. ----, new compensation-balance for, _E. J. Dent_, xlv, 83.^f ----, glass balance for, xxxii, 330.^f

Chrysoberyl of Haddam, analysis of, _H. Seybert_, viii, 105. ----, in Connecticut, ii, 142, 240; iv, 52. ----, in New York, iv, 37.

Chrysoprase, viii, 234; xvii, 353.

_Churchill, S._, notice of a double fish, xxvi, 116.^f

Chyometer, mode of determining specific gravities with, xi, 126.^f

Cicada septendecim, or seventeen year locust, habits of, xiii, 224. ---- ----, account, of, _S. P. Hildreth_, xviii, 47.^f ---- ----, remarks on, _D. Thomas_, xxi, 188.

Cinchona, on the different kinds of bark confounded with, _De Candolle_, xvii, 388. ----, bark, experiments on, _G. W. Carpenter_, ix, 363.

Cinchovatine, xlvii, 196.

Cinnabar in Michigan, i, 433; ii, 170; xxxvii, 185.

Cinnamon stone of Ceylon, analysis of, xiv, 204.

Cipher, new diplomatic, iv, 377.

Circulation of the blood, regulation of, _T. J. Aikin_, xxviii, 79. ---- in plants, xix, 393. ---- ----, _E. Emmons_, xxvi, 99.

_Cist, Z._, mines of anthracite about Wilkesbarre, Pa., iv, 1.

_Cist, J._, on the Melolontha or May bug, viii, 269.^f

Cisterns for water, mode of constructing, xxv, 301.

Citric acid from gooseberries, xvi, 385.

Citricic acid, _S. Baup_, xxxiv, 206.

Civilization, connection of, with mental aberration, xxii, 379.

Clam, eatable, of N. Y., facts regarding, x, 287.

_Clark, D. A._, singular appearances of snow and hail, ii, 132.

_Clark, S._, on the infinite divisibility of a finite quantity of matter, ix, 356. ----, notice of, xli, 217.^f

_Clarke, E. M._, magnetic electrical rotating machines by, xxxiii, 213.^f ----, electrepeter by, xxxiii, 224.^f

_Clary, R. E._, parhelia seen at Green Bay, xxviii, 304.^f

Classification, chemical, remarks on, _O. W. Gibbs_, xlix, 384. ----, ----, _R. Hare_, xxvii, 63; xxxii, 260. ----, mineral, remarks on, _J. D. Dana_, xlvi, 374. ---- of clouds, _E. Loomis_, xli, 325.

Clay of Pownal, Vt., xii, 298. ----, pipe, in New Jersey, ii, 198. ----, potter's, in Massachusetts, i, 344. ----, for sculptors, xxiv, 200.

Cleaveland's Mineralogy, review of, i, 35, 308. ---- ----, second edition announced, ii, 375.

Cleavelandite, (Kieselspath,) a variety of albite, vii, 370, 390.

_Clemson, T. G._, analysis of a titanic iron ore from near Baltimore, xvii, 42. ----, analysis of American spathic iron and bronzite, xxiv, 170. ----, notice of piperin, xviii, 352. ----, method of making sulphuric acid, xx, 347.^f ----, physical geography, industry, &c. of the Hartz, xix, 105.^f

Climate, connection with atmospheric and oceanic currents, _W. C. Redfield_, xxv, 133. ----, liable to change permanently or not, _S. Forry_, xlvii, 226. ----, effect of clearing land on, _S. Forry_, xlvii, 237. ----, effect of, on distribution of plants in the United States, _S. Forry_, xlvi, 221. ----, on a change of, _Bishop Heber_, xx, 130. ---- of the earth, _Lyell's_ views on the changes undergone, xx, 377. ---- antediluvian, _L. C. Beck_, xlv, 144. ---- of the post pleiocene period in the U. States, _H. D. Rogers_, xlvii, 257. ---- ibid, _A. Binney_, xlvii, 259. ---- of North America, _E. Mitchell_, xix, 283. ---- of North America, _Daubeny_ on, xxxv, 288. ---- of U. States, remarks on the amelioration of, by _D. Thomas_, xix, 361. ---- of the U. States, _S. Forry_, xlvii, 18,^f 221. ---- west of Alleganies milder than east, _S. Forry_, xlvii, 230. ---- of Florida, xxxv, 63. ---- of the Kenawha valley, _S. P. Hildreth_, xxix, 89. ---- of Ohio, xi, 224, 231. ---- and productions of Washington Co., Ohio, _S. P. Hildreth_, xii, 206. ---- of Columbia, South America, with general meteorological observations, _R. Wright_, xxxvii, 1. ---- ----, effect on human life, xxxvii, 12. ---- of the south of France, v, 173. ---- of Palestine, xxxi, 183. ----, productions, &c., of Singapore, xliv, 151. ---- of the province of Deccan, Bombay, xxxiii, 275. ----, see farther under _Meteorology_.

Clinkstone, remarks on the composition of, xix, 380.

Clock, an improved, xiii, 182. ----, affected by the state of the atmosphere, xiv, 375. ----, astronomical, _Prof. Bessel_, xliv, 160. ----, ----, on the stopping of, _W. Howard_, viii, 277. ----, see _Chronometer_.

Cloth of amianthus or asbestus, xviii, 401. ----, cotton, printing of, in Manchester, England, xxiii, 220. ----, ----, singeing, in the manufacture of, xxiii, 217. ----, made of glass, xxxix, 386. ----, incombustible, v, 188; viii, 390. ----, woollen, remarks on the manufacture of, xxiii, 218.

Clouds, fogs and rain, account of, _W. C. Redfield_, xxxiii, 54. ----, how sustained, _Stevelly_, xxxviii, 105. ----, formation of, _Stevelly_, xxxviii, 105. ----, application of the law of definite proportions to the stratification of, xliv, 172. ----, register of, at Nantucket, Mass., xlix, 406. ----, ----, at Hudson, Ohio, _E. Loomis_, xli, 323; xlix, 280. ----, classification of, _E. Loomis_, xli, 325.

Clypeaster, in the blue marls of N. Jersey, xvii, 287.

Coal, analyses of, _W. R. Johnson_, xxxviii, 382; xxxix, 139; xlix, 169. ----, ----, of Maryland, _Ducatel_ and _Alexander_, xxvii, 31. ----, ----, of Virginia, Chesterfield, _B. Silliman_ and _O. P. Hubbard_, xlii, 369. ----, ----, of Pennsylvania, Tioga Co., _W. Meade_, xiii, 32. ----, ----, indicating iodine, _M. Bussy_, xl, 217. ----, passage of anthracite into bituminous, _M. C. Lea_, xl, 370. ----, cannel, xviii, 376; xxix, 39; xxxi, 79. ----, economical uses of anthracite, x, 331; xi, 78. ----, ---- ---- ---- in smelting iron, xxxiii, 266. ----, ---- ---- ---- in blacksmith's shops, _G. Jones_, xviii, 303. ----, ---- ---- ---- when first used in blacksmithing, xviii, 307. ----, in the arts, heating power of, _W. R. Johnson_, xlvii, 126; xlix, 166. ----, ----, consumption of, in steam engines, xxix, 351. ----, ----, comparative value of American, for steam navigation, _W. R. Johnson_, xlix, 310. ----, ----, amount consumed at Pittsburg, xxix, 79. ----, ----, comparative character of European and American anthracites, _W. Meade_, xii, 75. ----, fossils, vegetable, _A. Brongniart_, iv, 266^f; analysis of the works of _Ad. Brongniart_ on, vii, 178. ---- ----, ----, _H. Witham_, xviii, 110.^f ---- ----, ----, in England, iii, 389. ---- ----, ----, at Wilkesbarre, Pa., ix, 165. ---- ----, upright trees, Nova Scotia, _C. Lyell_, xlv, 353. ---- ----, Ohio valley, _S. P. Hildreth_, xxix, 1, 151.^f ---- ----, marine shells, England, xxv, 199. ---- ----, freshwater shells, Lancashire, England, xxxiv, 26. ----, origin of, xii, 87; xviii, 321. ----, ----, anthracite, xxiv, 172. ----, ----, bituminous, xvii, 397. ----, period, probable constitution of the atmosphere during, _H. D. Rogers_, xlvii, 105. ----, peat converted into, xxxiv, 395. ----, specific gravities and combustible qualities of Ohio coals, _S. P. Hildreth_, xxix, 147.

_Coal Mines and Formations, characters and localities of._

Coal in Alabama, bituminous, xxvi, 190. ---- on Arkansas river, iii, 41. ---- in Connecticut, i, 239; iii, 248; v, 44^f; xxxiii, 163. ---- in Cuba, _J. H. Blake_, xlii, 388. ---- in England, remarks on the strata, xxxiii, 79. ---- ----, _Prestwich's_ observations on the alternation of marine and freshwater beds, xxxiii, 80. ---- ----, _Murchison_ on dislocations in beds, xxxiii, 84. ---- ----, _Prof. Phillips_ on the carboniferous limestone of Yorkshire, xxxiii, 84. ---- ----, marine shells in deposits, xxv, 199. ---- ----, mines of Dudley, visit to, xxxvii, 390. ---- in Illinois, _C. U. Shepard_, xxxiv, 142.^f ---- ----, _D. D. Owen_, xlv, 151. ---- ----, Kentucky, _S. P. Hildreth_, xxix, 140. ---- in Maine, formation of, _C. T. Jackson_, xxxvi, 149. ---- in Maryland, _J. T. Ducatel_ and _J. H. Alexander_, xxvii, 29. ---- ----, chemical analysis of, ibid, xxvii, 31. ---- in Massachusetts, _E. Hitchcock_, xxii, 41; xxxvi, 377. ---- ----, anthracite, in Wrentham, xxiii, 405. ---- ----, ----, of Mansfield, _C. T. Jackson_, xxxiv, 395. ---- ----, ----, in mica schist, probable age of, _C. Lyell_, xlvii, 214. ---- at Mt. Lebanon, Syria, beds of, xxviii, 32. ---- in Negropont, Grecian Archipelago, xxxi, 176. ---- in New York, in the Catskills, vi, 95. ---- ----, Washington Co., _A. Eaton_, xvi, 299. ---- ----, connection of, with coal beds of Pennsylvania, xix, 21. ---- in Nova Scotia, bituminous, xv, 149. ---- ----, the coal formation, _C. Lyell_, xlv, 356. ---- ----, upright trees in strata, _C. Lyell_, xlv, 353. ---- in Ohio, i, 227, 239. ---- ----, observations on, _S. P. Hildreth_, xiii, 38. ---- ----, deposits of the Ohio valley, xxix, 1, 123. ---- ----, of the falls of the Cuyahoga, xxxi, 47.^f ---- ----, of Newcastle, xxxi, 63. ---- ----, of Coshocton, xxxi, 69. ---- ----, bituminous, near Waterford and Zanesville, xxv, 220, 229. ---- ----, extent of beds in, xxxiv, 348, 357. ---- ----, Zanesville, vegetable impressions in, _E. Granger_, iii, 5.^f ---- ----, cannel, xviii, 376. ---- ----, ----, in Licking Co., xxxi, 79. ---- ----, ----, in Guernsey Co., xxix, 39. ---- of Panama isthmus, xliii, 207. ---- in Pennsylvania, beds of, remarks on, _S. W. Pomeroy_, xxi, 342. ---- ----, ----, the equivalent of those of Europe, _A. Eaton_, xxiii, 399. ---- ----, ----, in southern, with analyses, _M. C. Lea_, xl, 370. ---- ----, model of the southern field of, _R. C. Taylor_, xli, 80.^f ---- ----, on the general character, limits and relations of the beds, _J. Hall_, xlii, 52. ---- ----, on the anthracite, xi, 91. ---- ----, ----, _J. Pierce_, xii, 55. ---- ----, ----, of the Belmont mines, Penn., xii, 301. ---- ----, ----, mine of Carbondale, xviii, 319. ---- ----, ---- ----, of Mauch Chunk, _B. Silliman_, xix, 12.^f ---- ----, beds of, ibid, notice of, xx, 163. ---- in Pennsylvania; mines of Wyoming valley, _Z. Cist_, iv, 1.^f ---- ----, ----, of Wyoming, on the rocks accompanying, vii, 260. ---- ----, ----, of Wyoming and Lackawanna valleys, account of, _B. Silliman_, xviii, 308.^f ---- ----, on Tioga river, analysis and description of, _W. Meade_, xiii, 32. ---- ----, in the Monongahela valley, _S. P. Hildreth_, xxix, 58.^f ---- ----, Carbon Creek deposit, some account of, _W. R. Johnson_, xxxix, 137. ---- ----, ibid, analysis of coal from, xxxix, 139. ---- ----, bituminous, xii, 69. ---- ----, ----, _S. P. Hildreth_, xxix, 77. ---- ----, Lehigh company, xxiv, 173. ---- in Rhode Island, anthracite, on the uses and characters of, _B. Silliman_, xi, 78. ---- ----, _C. T. Jackson_, xl, 187. ---- in Tennessee, xxix, 141; xxx, 391. ---- in Virginia, beds of, _J. Grammer,_ i, 125. ---- ----, bituminous, remarks on, _J. Pierce_, xi, 54. ---- ----, mines near Richmond, statistical and geological account of, _A. S. Wooldridge_, xliii, 1. ---- ----, bituminous, of Chesterfield Co., analysis of, _B. Silliman_ and _O. P. Hubbard_, xlii, 369. ---- ----, Kenawha valley, xxix, 108^f, 109.^f ---- ----, Wheeling, _S. P. Hildreth_, xxix, 80.^f ---- ----, porous anthracite or natural coke, _W. B. Rogers_, xliii, 175. ---- in eastern Virginia, of the lower oolite epoch, _W. B. Rogers_, xliii, 175. ---- of the Western states, characters, limits, &c. of the beds, _J. Hall_, xlii, 52. ---- mines, explosions in American, xxxvii, 387. ---- ----, accident in the Bovey, in consequence of the compression of the air, xvii, 38. ---- ----, burning of, at New Sauchie, xix, 386. ---- ----, fire damp, at Newcastle, chemical examination of, _E. Turner_, xxxvii, 201.

Coast survey, U. States, xlix, 229.

Coat of mail, found in Vermont, xiii, 199.

_Coates, B. H._, on the Uvularia perfoliata, as a remedy for poisoned wounds, xxxv, 270.

Cobalt, modes of detecting, _Prof. J. F. Dana_, viii, 301. ----, spontaneous combustion of, xv, 188. ---- and nickel, _Döbereiner's_ mode of separating, v, 188. ---- and nickel ores, of Chatham, Ct., analyses of, _A. A. Hayes_, xxi, 195. ----, [iron,] arsenical, of N. H., _J. F. Dana_, viii, 301. ----, oxide of, near Silver Bluff, S. Carolina, _J. L. Smith_, xlvii, 131; xlviii, 103. ---- ores, analyses of two, _Wöhler_, xxxvi, 332. ---- ----, localities of, in Connecticut, vi, 209, 235; xxi, 195. ---- ----, in Maryland, iv, 283. ---- ----, in Missouri, xii, 378. ---- ----, in N. Hampshire, viii, 198, 301.

Coca of Peru, iii, 397.

Coccolite in N. York, v, 269; vii, 57; ix, 40, 250; xix, 224. ---- in Canada, viii, 70.

Coffee, consumption of, in Europe, iv, 392. ----, the Astragalus balticus in Sweden, a substitute for, v, 180. ---- tree, leaves of, used for tea, xlix, 401.

_Coffin, J. H._, secular acceleration of the moon's mean motion, xlvii, 324.^f

Cog-wheels, on the forms of, _E. W. Blake_, vii, 86.^f

Cohesion, experiments with soap bubbles on attraction of, _J. Henry_, xlviii, 216.

Coins, remarks on, and descriptions of some ancient, xxvii, 74. ---- and medals, character and composition of, _J. W. Draper_, xxix, 157.

Coir fibre, used for ropes, xxi, 33.

Coke, natural, of Virginia, _W. B. Rogers_, xliii, 175.

Cold, effects of, ii, 177. ----, artificial, produced by mixed metals, xiii, 171. ----, ----, a freezing mixture for, xii, 195. ----, extraordinary seasons of, _N. Webster_, xxviii, 183. ---- at New Haven in 1766, 1767, xxviii, 183. ---- at Hartford in 1780, xxviii, 186. ----, extreme, at Plattsburgh, N. Y., iii, 366; xi, 195. ---- in Maine, 1817, mercury frozen by, xxxi, 161. ---- on Lake Superior, ix, 395. ---- of the winter of 1825-6, x, 399. ---- of January, 1835, xxviii, 177. ---- winter of 1837, 1838, in England, _J. Lindley_, xxix, 18.

_Colden, Cadwallader_, correspondence with _Gronovius, Linnæus, &c._, xliv, 85.

Collapse of a reservoir, _R. Hare_, xxxiii, 242.^f

_Collins, Z._, herbarium of, xxiii, 398.

_Collinson, P._, letters from, to _C. Colden_, xliv, 112.

Colombia, features of, _R. Wright_, xxxvii, 2. ----, river Orinoco, rise of, xxxvii, 2. ----, climate and seasons of, xxxvii, 2. ----, mists above 12000 feet, xxxvii, 3. ----, llamas and horses of, xxxvii, 14. ----, vegetation and productions of, xxxvii, 15.

Colophane, a tree affording an aromatic oil, ix, 386.

Colophonite, of Willsboro', N. Y., _H. Seybert_, v, 117.

Color of air and deep waters, and some other analogous fugitive colors, _Count Xavier de Maistre_, xxvi, 65.^f ---- of opaline glass, xxvi, 66. ---- of leaves in autumn, _Macaire Prinsep's_ views respecting, xvi, 215. ---- of the Raphael Tapestries, effect of light and air in restoring, xxxvii, 244. ---- of the sea, due in part to iodine and bromine, xvii, 170. ---- of wood of certain trees, change of, xviii, 404. ----, blue, from buck-wheat, xxii, 384. ----, carmine, produced on ivory by red lead on the under side, xxvi, 74. ----, increase of, when objects are seen with the head inverted, _D. Brewster_, xl, 343. ----, inability to distinguish, xl, 54.

Coloring matter for dyeing, experiments on, _M. Persoz_, xxiv, 380. ---- ---- of the Lichen rocella, xviii, 151. ---- materials for confectioners, xxii, 381.

Columbic acid, _A. A. Hayes_, xlvi, 166.

Columbite, investigations on, _Rose_, xlix, 228. ---- from New Hampshire, large crystal of, _C. U. Shepard_, xvii, 357.^f ----, stanniferous, discovered in Massachusetts by _C. U. Shepard_, xvi, 220.^f ----, a large crystal of, from Middlelown, Conn., _J. Johnston_, xxx, 387.^f ----, localities of, in Connecticut, iv, 52; vi, 236; xxx, 387; xxxiii, 162. ----, in Mass., xvi, 220.^f ----, in New Hampshire, xvii, 357. ----, Torrelite of _Thomson_ identical with, _J. D. Dana_, xxxii, 149.^f

Combustion, facts relating to, xxviii, 70. ----, observations on, _S. Morey_, xxv, 146. ---- of chlorine by olefiant gas, x, 365. ---- of coal strata, products of, viii, 382. ---- with spongy platina discovered, vii, 387. ----, spontaneous, iii, 383; v, 201; xxii, 161; xxvii, 178. ----, ----, of various substances described, _J. Mease_, xxxiii, 147. ---- of ashes, xlii, 165.^f

Comet of 1819, ii, 374. ---- of 1822, notice of, ix, 199, 367. ---- of 1823, 1824, observations on, viii, 315. ----, Olbers's elements of, xiii, 189. ----, Biela's, notice of, xxiii, 390. ----, ----, elements of, 1832, xxiv, 346; xxv, 191; xxviii, 398. ----, ----, supposed possibility of collision with Encke's, xxiv, 346. ---- of July, 1832, _J. J. Littrow_, xxiv, 348. ----, discov'd Ap. 8, 1834, xxvi, 402. ----, Halley's, 1835, xxix, 155. ----, ----, _E. Loomis_, xxx, 209. ----, ----, remarkable phenomena of, xxxv, 285. ----, Encke's, remarks on, xxiv, 346; xxxiii, 15; xxxv, 388. ----, ----, notice of, xxxvii, 191. ----, Dec., 1839, Galle's first, notice of, xxxviii, 378; xl, 207. ----, Jan., 1840, Galle's second, notice of, xl, 40, 207. ----, March, 1840, Galle's third, notice of, xl, 207. ----, October, 1840, the third of 1840, Bremicker's, xl, 207. ----, of October, 1842, discovered by _M. Laugier_, xliv, 211. ----, great, of 1843, xliv, 412; xlv, 188^f, 229. ----, great, of 1843, elements of, _S. C. Walker_ and _E. O. Kendall_, xlv, 188.^f ----, second of 1843, xlv, 230. ----, third of 1843, xlvi, 210. ----, De Vico's, xlviii, 219,[F] 402. ----, ----, first seen in the U. States by _H. L. Smith_, xlvii, 419. ----, southern, of December, 1844, observations on, xlviii, 402; xlix, 220. ----, D'Arrest's, Dec. 28, 1844, xlviii, 403. ----, Mauvais's, xlix, 220. ----, second of 1845, xlix, 220. ----, third of 1845, xlix, 220. ----, on the observations of, _P. J. Rodriguez_, xvi, 94.^f ----, nature of, _W. A. Norton_, xlvi, 104. ----, on the tails of, x, 395; xxxiii, 5, 11. ----, ----, _W. Mitchell_, xxxviii, 35; xl, 59. ----, ----, of Halley's, _B. F. Joslin_, xxxi, 142, 324. ----, ----, formation of, _W. A. Norton_, xlvi, 104.^f ----, possible collision of two, _J. J. Littrow_, xxiv, 346. ----, medal for discovery of, by the King of Denmark, xxiii, 391.

_Commun, J. du_, on the causes of fresh water springs, xiv, 174.^f ----, hypothesis on volcanoes and earthquakes, xv, 12.^f ----, ---- ----, objections to, xv, 25. ----, ---- ----, strictures on, xvi, 51.

Compass, mariner's, on the invention of, _A. Humboldt_, xl, 242. ----, microscopic, _J. Locke_, xxiii, 237.^f ----, surveyor's, improvements in, by _T. Kendall_, xix, 337.^f ----, pivots, on the use of native alloy for, xli, 67.

[Footnote F: At this place, erroneously called _Faye's_ comet.]

Complaisánts, on board a vessel in the Mediterranean, xvi, 171.

Compression of water, xiii, 189.

Comptonite, a new species, iv, 28.

_Conant, M._, a new magnetic instrument, xlix, 301.^f

Conchology, see ZOOLOGY, _Mollusca_.

Concretious, calcareous, in limestone, in Indiana, _J. T. Plummer_, xliv, 283.^f

Condensation of gases, abstract of _Faraday's_ experiments on, vii, 352. ---- of sulphuretted hydrogen, vii, 352. ---- of carbonic acid, vii, 354. ---- of euchlorine, vii, 355. ---- of nitrous oxide, vii, 355. ---- of cyanogen, vii, 356. ---- of ammonia, vii, 357. ---- of muriatic acid, vii, 357. ---- of chlorine, vii, 357. ---- of gases, _J. Torrey's_ experiments on carbonic, sulphurous and chloro-chromic acids, xxxv, 374; xxxvi, 394.^f ---- ----, _J. K. Mitchell_, xxxv, 346.^f ---- ----, _Thilorier_, xxxi, 163, 402, 404.

Conduction of water, _W. W. Mather_, xiii, 368.^f ---- ----, as shown by Murray's experiments, _C. Dewey_, xxviii, 151; xxxi, 246.

Confectionary, poisonous, xviii, 157.

Conglomerate mica slate, in Massachusetts, viii, 244. ----, Potomac marble, xxvi, 221^f; xxvii, 22.

Conic sections, new instrument for drawing the curves of, xv, 368.^f ---- ----, _Prof. Benedict_, xxxi, 258.^f ---- ----, problem in, _Prof. Davies_, vi, 280.^f

Conite, a new mineral species, ii, 354.

Connecticut, on coal in, i, 239; iii, 248; v, 44^f; xxxiii, 163. ----, geology of N. Haven and Litchfield Cos., _B. Silliman_, ii, 201. ----, geology of Salisbury, _C. A. Lee_, viii, 252. ----, geology of; trap and sandstone in junction at Wallingford, _A. B. Chapin_, xxvii, 104.^f ----, ----, trap rocks, _B. Silliman_, xvii, 119. ----, ----, section from Killingly to Haddam, _W. W. Mather_, xxi, 94.^f ----, ----, report on, by _C. U. Shepard_, noticed, xxxiii, 151. ----, ----, survey of, authorized, xxviii, 381. ----, ores of, see _under names of the Metals_. ---- valley, rocks of, vii, 25. ---- ----, water courses and geology of, with account of terraces, ancient lakes, &c., xxii, 205.^f ---- ----, geological account of, _E. Hitchcock_, vi, 1^f, 201; vii, 1.^f ---- ----, vertebral remains in sandstone of, _E. Hitchcock_, xxix, 330. ---- ----, fossil footprints in, _E. Hitchcock_, xxix, 307^f; xxxi, 174; xxxii, 174; xli, 165; xlvii, 113, 292^f, 390; xlviii, 61. ---- ----, ----, ----, _J. Deane_, xlv, 178; xlvi, 73^f; xlvii, 381, 399; xlviii, 158^f; xlix, 79^f, 213.^f ---- ----, ----, ----, _C. Lyell_ on, xlv, 394. ---- ----, ----, ----, _W. C. Redfield_, xxxiii, 201. ---- Reserve, Ohio, notice of, xxxi, 21.

_Conrad, T. A._, notes on American geology, xxxv, 237. ----, on characteristic fossils, xxxv, 237, 246. ----, temperature of different geological epochs, xxxv, 239. ----, cause of the features of the U. States, xxxv, 244. ----, on the tertiary fossils of America, xxiii, 204, 339. ----, description of tertiary shells, in a paper by _J. T. Hodge_, xli, 344.^f ----, on the tertiary of the Atlantic coast, xxviii, 104, 280.^f ----, new fresh water shells of Alabama, Tennessee, &c., xxv, 338.^f ----, on the features of the transition or Silurian system, xxxv, 243. ----, on the condition and character of organic life in the transition epoch, xxxvi, 12. ----, characteristic fossils of the N. York rocks, xxxvi, 14. ----, on the Silurian strata, and the characteristic fossils, xxxviii, 86. ----, subdivision of the Silurian system in N. York, xlii, 229. ----, Calymene senaria, xlii, 230.

Conservatory at Boston, destruction of, by fire, xlvi, 214.

Continents, mean height above the sea, _Humboldt_, xlix, 397.

_Conwell, C. C._, chemical experiments on tobacco, xvii, 369. ----, on the passage of light through small apertures, xx, 350.

_Conybeare_ and _Phillips_, outlines of the geology of England and Wales, vii, 203.

Cooking apparatus of Lemare, vi, 399.

Cooling of the earth, a dynamical cause in geology, _W. W. Mather_, xlix, 288.

_Cooley, D._, floral calendar, ii, 254.

_Cooper_, report on the fossil bones of Big Bone Lick, xx, 370.

_Cooper, T._, on the tests for arsenic, iv, 155. ----, disclaimer of, with regard to a fossil described by _A. Eaton_, xx, 413. ----, on volcanoes and volcanic substances, iv, 205.

Cooper's rotative piston, xvi, 313.^f

Copaiva balsam, a new preparation of, by _G. W. Carpenter_, xvi, 40.

Copal, notice of, xliv, 212. ----, solution of, aided by camphor, xiii, 174. ---- varnish, _Berzelius_, xvii, 175.

_Copernicus_, monument to, at Warsaw, iv, 387.

Coprolites, in Connecticut valley, _E. Hitchcock_, xlvii, 113, 308.^f ---- of birds, analysis of, _S. L. Dana_, xlviii, 46.

Copper, atomic weight of, xlviii, 402. ----, amount produced in Great Britain and Ireland, for the year ending June 30, 1822, viii, 390. ----, determination of, in a binoxide salt, xlvii, 193. ----, partial reduction of the binoxide of, by heat, xlviii, 184. ----, hydride of, _A. Wurtz_, xlviii, 185. ----, silvering of, xxiii, 386. ----, metallic, galvanic formation of, in a mineral vein, xxxiv, 44. ----, protoxide of, xxii, 353. ----, white, artificial, viii, 380. ----, _Witting's_ test for, ix, 201. ----, tendency of iron to protect, when exposed to sea-water, xxv, 203.^f ----, foliaceous, of Vesuvius, xi, 267. ---- and potash, sulphate of, xx, 195. ----, native, in Connecticut, i, 55; vi, 230; xxxiii, 160. ----, ----, connection with trap in Connecticut and Michigan, xlvii, 132. ----, ----, in drift, Massachusetts, _E. Hitchcock_, xlv, 331. ----, ----, in N. Jersey, Summerville mine, v, 401; xxxvi, 107. ----, ----, ----, _L. C. Beck_, xlv, 331. ----, ----, of Michigan, _D. Houghton_, xli, 185; xlv, 331, 332. ----, ----, mass of, from Lake Superior, _H. R. Schoolcraft_, iii, 201.^f ----, ----, ----, presented to Yale College, xxvii, 381. ----, ----, and silver, of Lake Superior, _C. T. Jackson_, xlix, 81. ----, ----, in Missouri, iii, 71. ----, ----, in the trap and amygdaloidal minerals of Nova Scotia, xv, 134; xxx, 350. ----, ----, and ores of, in northern American, at the copper mountains, xvii, 8. ----, carbonate of, in Connecticut vi, 206. ----, ----, in Massachusetts, i, 115; vi, 207. ----, ----, in Michigan, xli, 185. ----, ----, in Pennsylvania, i, 236; viii, 239. ----, crenate of, analysis, _C. T. Jackson_, xxxvii, 398. ----, oxides of, in Connecticut, vi, 206. ----, ----, in Michigan, xli, 185. ----, ----, in Pennsylvania, viii, 239. ----, sulphurets of, in Canada, viii, 47, 75. ----, ----, in Connecticut, i, 316; vi, 206, 231; xxxiii, 160. ----, ----, in Massachusetts, i, 115, 136, 437; vi, 207; x, 215; xxii, 61. ----, ----, in Maryland, xviii, 80; xxvii, 20, 23. ----, ----, in Michigan, xli, 185. ----, ----, in New York, viii, 249. ----, ----, in New Jersey, ii, 192, 198; v, 268. ----, ----, in North Carolina, xli, 183, 348. (See also under _Copper mines_.) ----, phosphate of, in New Jersey, v, 401. ----, silicate, in Michigan, xli, 185. ----, siliceous hydrate in New Jersey, _G. T. Bowen_, viii, 118. ---- mines or ores in Massachusetts, account of, vi, 207; xxii, 61. ---- ----, at Strafford, Vt., xxi, 383. ---- ----, in Connecticut, at Cheshire, vi, 206;--_C. U. Shepard_, xxxiii, 160. ---- ----, ----, at Bristol, vi, 231. ---- ----, in Maryland, xxvii, 22. ---- ----, in N. Jersey, Schuyler's, v, 239. ---- ----, ----, at Summerville, v, 401. ---- ----, ores and the minerals of the vicinity of New Brunswick, N. Jersey, _L. C. Beck_, xxxvi, 107. ---- ----, on Lake Superior, _H. R. Schoolcraft_, vii, 43. ---- ----, ibid, _D. Ruggles_, xlix, 64.^f ---- ----, ibid, _C. T. Jackson_, xlix, 81. ---- ----, ibid, _D. Houghton_, xli, 183. ---- ----, of Wisconsin and Missouri, J. T. Hodge, xliii, 381. ---- ----, Nova Scotia, xv, 152. ---- ----, of the Hartz, xix, 113. ---- ----, at Ekatherinenburg, xvii, 25. ---- ----, Rio Tinto, Spain, yield of, xxviii, 144. ---- mountains, Northern America, xvii, 8. ---- ores, on the roasting of, xxix, 374;--in Sweden, xxviii, 145. ---- sheathing of ships, on the corrosion of, _H. Davy_, ix, 207. ---- ----, causes of the destructibility of, _Prideaux_, xlii, 322.

Copperas manufactured at Stratford, Vt., viii, 180; xxi, 383. ---- ---- from pyrites in Morris Co., N. J., v, 28.

Coralline agates in the West Indies, i, 141.

Corallines in chalk, xxxiii, 111; xxxix, 205.

Corals, opinion of _Quoy_ and _Gaymard_ on the depth at which they grow, xv, 357. ----, on the temperature limiting the distribution of, _J. D. Dana_, xlv, 130. ----, distribution of, indicates the areas of subsidence in the Pacific, _J. D. Dana_, xlv, 131.^f ----, fossil, see ZOOLOGY _Radiata_.

Coral islands, area of subsidence during the formation of Pacific, _J. D. Dana_, xlv, 131.^f ---- limestone in Ceylon, vi, 194. ---- shores of Florida, xxxv, 60. ---- limestone raised, in Dominica and other West Indian islands, iv, 218. ---- and shell rock of St. Croix, xxxv, 71. ---- reefs, formation of, _B. Hall_, xiv, 207.

_Corda, A. J. C._, on the impregnation of plants, xxxi, 317.^f

Cordage, on the vegetable materials used for, _J. Mease_, xxi, 27. ----, material for, from the Rose of Sharon, xxviii, 371. ----, from Manilla hemp, xli, 200.^f ----, and nets, strengthened by a solution of glue with oak bark, xxvi, 186.

_Cornelius, E._, geology, mineralogy, &c., of part of Virginia, Tennessee, Alabama, and Mississippi, i, 214, 317.^f ----, singular position of a granite rock, ii, 200.^f

_Cornuti's_ plants of Canada, ix, 265.

Corpo Santo, instances of, xvi, 171.

Corrosive sublimate, antidote of, iii, 374. ---- ----, detection of, xvii, 181; xxiii, 207. ---- ----, decomposition of, by vegetable substances, xvii, 385. ---- ----, solubility in ether, xvi, 399.

Corundum, in Connecticut, vi, 219. ----, in New Jersey, xiii, 380; xxi, 319. ----, in North Carolina, iii, 4, 229.

Cosmogony of Moses, xxv, 26. ----, Mosaic, critical interpretation of _barah_ and _asah_, _N. Webster_, xxxv, 375.

_Costa, E. M. da._, notice of, _C. Fox_, xxxvii, 155.

Cotarnine, xlix, 205.

Côteau des Prairies, _G. Catlin_, xxxviii, 138. ----, red clay or Catlinite of, _C. T. Jackson_, xxxv, 388; xxxvii, 393.

Cotton, use of, in dressing wounds, xxi, 159. ----, cloth, see _Cloth_. ----, gin, invention of, by _E. Whitney_, xxi, 209. ----, seed, illuminating gas from, _D. Olmsted_, viii, 294; x, 362. ----, plant, importance of cultivating it, iv, 86. ----, ----, remarks on the cultivation of, with reference to growing it in India, xxxviii, 131. ----, stuffs, singeing by the gas flame, x, 359. ----, trade, commencement of, in the United States, xxi, 252. ----, case of treatment by, xxiii, 198.

_Couthouy, J. P._, remarks on icebergs, xliii, 154. ----, remarks on the distribution of corals, as determined by temperature, xlvii, 123. ----, on a charge made by _J. D. Dana_, xlv, 378; xlvii, 122.

Couzeranite, description and analysis of, xvii, 183.

Cow tree of Venezuela, xix, 370.

Cowry, money, xxxii, 250.

Crag of Norfolk and Suffolk, fossil vertebrated animals of, xxxi, 339.

Craigleith quarry fossil tree, xxviii, 390.

_Cram, T. J._, length of a degree, oblateness of the earth and planets, reduction of latitude, xxxi, 222.^f

Cramp, cure for, xxx, 169.

Crania, new work on American, proposed, _S. G. Morton_, xxxii, 207. ----, ibid, review of, xxxviii, 341. ----, American, characteristics of, xlvii, 408. ----, Ægyptiaca, _S. G. Morton_, notice of, xlvii, 205. ----, ancient Egyptian, _S. G. Morton_, xlviii, 268. ----, internal capacity in different races of men, _S. G. Morton_, xxxviii, 373.

Crank motion, _A. B. Quinby_, vii, 316^f; ix, 317; xi, 338^f; xii, 124^f, 344^f; xiii, 73, 356. ---- ----, remarks in reply to _Mr. Quinby_, viii, 279; xii, 338^f; xiii, 75, 350. ---- ----, _I. Doolittle_, xii, 367; xiv, 60.^f

Crayons, red, manufacture of, xvii 187.

Crenate of copper, native, _C. T. Jackson_, xxxvii, 398.

Crenic acid, and apocrenic acid, in water, _Berzelius_, xxviii, 121.

Creosote, _M. Liebig_, xxviii, 131.

Cretaceous (ferruginous sand) fossils, U. States, _S. G. Morton_, xvii, 274, 290; xviii, 243, 250^f; xxiii, 288^f; xxiv, 128^f; xlviii, 267. ---- formation of the U. States, a division in, _S. G. Morton_, xxviii, 277. ---- ----, review of _Morton's_ Synopsis of the fossils of, xxvii, 377. ---- ---- of the U. States, _E. Hitchcock_, xli, 246, 265. ---- ---- in South America, xli, 265. ---- ---- in America, extent of, _C. G. Ehrenberg_, xlvi, 307. ---- ---- of the Upper Missouri, Nicollet, xli, 180; xlv, 153. ---- strata of New Jersey, _C. Lyell_, xlvii, 213. ---- ---- of New Jersey, (green-sand) foraminifera in, xli, 213. ---- ---- of New Jersey, fossil crocodile in, S. G. Morton, xlviii, 265.^f ---- formation in N. Jersey, list of fossils in, _S. G. Morton_, xlviii, 267. ---- period in United States, _H. D. Rogers_, xlvii, 251.

Crichtonite in Connecticut, xxxv, 179. ----, (variety Washingtonite) in Connecticut, _C. U. Shepard_, xliii, 364.^f ----, in Rhode Island, xxxv, 180.

Crinoidea, general remarks on the characters and geological position of, _J. Hall_, xlv, 349. ----, see farther, ZOOLOGY, _Radiata_.

Crocodile, fossil, in New Jersey, xvii, 289; xxvii, 353; xlviii, 265.^f

_Croom, H. B._, plants from Florida, xxv, 74. ----, botanical communications, including botany of Middle Florida, xxvi, 313. ----, new localities of plants at the South, with notes and descriptions, xxviii, 165. ----, organic remains in the marl pits of North Carolina, xxvii, 168.

Crotalus reliquus, _A. Eaton_, xx, 122.^f

_Crosse_, some account of galvanic apparatus of, xxxii, 372; xxxv, 125.^f ----, supposed production of animal life, xxxii, 374^f; xxxiii, 272. ----, production of crystals and certain insects, xxxv, 125.^f ----, Acari of, xxxii, 374^f; xxxv, 125^f; xlix, 227. ----, ----, experiments of _W. H. Weekes_ in the production of, xliii, 395.

Crucible, improved, viii, 389. ----, for glass houses, on the manufacture of, xvi, 112. ----, for fusion, xxiii, 384.

Crustaceans in Palæozoic rocks, _J. Phillips_, xlii, 326. ----, see farther under ZOOLOGY, _Articulata_.

Cryophorus, _Wollaston's_, vii, 140. ----, improved, _R. Hare_, xxxiii, 244.^f

Crystals, compound, formation of, _J. D. Dana_, xxx, 275.^f ----, drawing of figures of, _J. D. Dana_, xxxiii, 30.^f ----, models, of mica, xxxviii, 187. ----, a new fluid in, vii, 186. ----, two new fluids in, xii, 214.^f ----, naphtha in, _C. Dewey_, i, 345. ----, pseudomorphous, see _Pseudomorphous_. ----, cause of double refraction in, xxi, 299. ----, with rounded angles and bent, in New York, deductions from, _L. C. Beck_, xlvi, 333. ---- in plants, discovered by _Turpin_, xix, 177; xx, 382. ---- ----, of oxalate of lime, _Turpin_, xxi, 372. ---- ----, _J. W. Bailey_, xlv, 149; xlviii, 17.^f ---- in geodes, facts tending to illustrate the formation of, viii, 282. ---- ----, ibid, _J. D. Dana_, xlix, 52. ----, rotation of, while forming, indicating polarity, as seen under the solar microscope, _B. F. Joslin_, xxxv, 150. ---- of Andalusite from Westford, Mass., xlvi, 381.^f ---- of apatite, bent and rounded, xlv, 143; xlvi, 365.^f ---- of anatase, xlvii, 215.^f ---- of Beaumontite, xlvi, 234.^f ---- of beryl, from Haddam, viii, 395; xl, 401^f; xlvi, 381.^f ---- ----, from Monroe, Ct., bent, xlvi, 366.^f ---- of calc spar, from Rossie, N. Y., _J. D. Dana_, xlvi, 33.^f ---- of chondrodite, xlvi, 381.^f ---- of Christianite, (anorthite,) xi, 261.^f ---- of chromic oxide, xxviii, 396. ---- of Columbite, xvi, 220^f; xvii, 357^f; xxx, 387.^f ---- of Danaite, xlvi, 384.^f ---- of datholite, of Roaring Brook, _J. D. Dana_, xlvi, 380.^f ---- of epidote, from Haddam, Ct., xlvi, 381.^f ---- ----, from Franconia, _C. U. Shepard_, xviii, 129.^f ---- of eremite, _C. U. Shepard_, xxxii, 341. ---- ----, _J. D. Dana_, xxxiii, 70^f; xlv, 402.^f ---- of galena, Rossie, xlvi, 366.^f ---- of Haydenite, xlvi, 379.^f ---- of Heulandite, of Paterson and Bound Brook, N. J., _L. C. Beck_, xliv, 59.^f ---- of Humboldtilite, xi, 251.^f ---- of idocrase, from Amherst, N. H., xlvi, 381.^f ---- of iodic acid, xx, 185. ---- of iodine, xvii, 168; xviii, 84.^f ---- of iron, magnetic, distorted, _J. D. Dana_, xlvi, 365.^f ---- of Lederite, _C. U. Shepard_, xxxix, 357.^f ---- ----, _J. D. Dana_, xlvi, 36^f; xlviii, 180. ---- of ferro-silicate of manganese, from Rhode Island, _C. U. Shepard_, xvii, 142.^f ---- of microlite, _C. U. Shepard_, xxvii, 361. ---- of pyrites, Rossie, _J. D. Dana_, xlvi, 36.^f ---- of quartz, bent, xlvi, 366.^f ---- ----, soft, from Carara, Italy, v, 394. ---- ----, distorted, xlvi, 365.^f ---- ----, containing globules of water, from Elba, iv, 27. ---- ----, ibid, in U. States, ii, 14; ix, 246. ---- ----, containing naphtha, _C. Dewey_, i, 345. ---- of serpentine, of Warwick, N. Y., ix, 242. ---- of Sillimanite, xlvi, 382.^f ---- of snow, ii, 337^f; iii, 367.^f ---- of staurotide, macle, _C. T. Jackson_, xlvi, 368.^f ---- of topaz, distribution of coloring matter in, and optical properties of, vii, 364. ---- of zircon, tesselated, _J. D. Dana_, xlvi, 36.^f

Crystalline forms, two, presented by the same substance, viii, 378; xlvi, 370. ----, substances from the juice of plants, xi, 391.

Crystallization, tendency to, in matter, xix, 381. ----, on the influence of air on, _M. Graham_, xvii, 373. ---- effected by the action of weak electric forces, _M. Becquerel_, xvii, 383; xxviii, 291. ---- ---- ibid, _G. Bird_, xxxiii, 267. ---- ---- ----, _A. Crosse_, xxxv, 125.^f ----, an instance of instantaneous, _J. Green_, iii, 93. ---- of snow, _J. Green_, ii, 337.^f ----, curved, of gypsum, Mammoth Cave, Ky., _J. Locke_, xlii, 206.^f ---- the cause of the schistose structure and cleavage of some rocks, _J. D. Dana_, xlv, 105. ---- of carbonate of potash, viii, 181. ---- of the carburets, _S. Brown_, xxxviii, 118. ---- of oil of sassafras, remarkable, _A. A. Hayes_, xx, 128. ---- of water, light from, xxvi, 178.

Cuba, coal mines in, _J. H. Blake_, xlii, 388. ----, fossils of, supposed to be oolitic, _J. Lea_, xl, 41. ----, meteorological observations in, _J. H. Blake_, xlii, 292.

Culmites, vii, 180.

Cummingtonite, named and described, _C. Dewey_, viii, 59. ----, locality in Massachusetts, viii, 233; ix, 43, 54.

_Cunningham, R._, obituary notice of, xxxii, 215.

Cupellation, new method of, _W. W. Mather_, xxxv, 321. ----, a mode of, _G. Engelmann_, xlii, 394.

Currents in water, remarks on the causes of, _A. W. Carson_, xxix, 340.^f ---- ----, a fact relating to, _C. Rumker_, xx, 180. ---- ----, evidences of them over the surface of the earth, xi, 100. ----, oceanic, v, 132. ----, ----, and temperature, xxv, 130. ----, ----, from the north polar regions in the Atlantic, _Wm. C. Redfield_, xxxii, 349; xlviii, 373.^f ----, ----, ibid, ice boulders and pebbles, transported by, xxxii, 351; xlviii, 373.^f ----, ----, ibid, influence of, on the Gulf Stream, _W. C. Redfield_, xlviii, 381. ----, ----, Gulf Stream, its limits and relation to the north polar current, _W. C. Redfield_, xxxii, 349; xlviii, 381. ----, ----, of the Atlantic, iv, 390. ----, ----, ----, _W. C. Redfield_, xlv, 295. ----, ----, ----, causes of, and influence in producing the sedimentary rocks of the United States, _W. W. Mather_, xlix, 1. ----, of the Southern and Pacific oceans, xlv, 299. ----, atmospheric, see _Winds_.

_Curtis, M. A._, new and rare plants of N. Carolina, xliv, 80. ----, botanical labors of, xlii, 12.

Curves for arches, method of describing, _J. Thomson_, xxiv, 73.^f ----, of conic sections, instruments for drawing, xv, 368.^f ----, of tri-section, _W. Allen_, iv, 343.^f

Cuscutineæ, monograph of North American, _G. Engelmann_, xliii, 333^f; xlv, 73.^f

_Cutbush, J._, on the formation of cyanogen, vi, 149. ----, on the composition and properties of the Chinese fire, and on the so-called brilliant fires, vii, 118. ----, an improvement in the electrical lamp, ii, 332. ----, on the Greek fire, vi, 302.

_Cuvier, G._, essay of, on the theory of the earth, noticed, i, 68. ----, on the freshwater formations of Paris and Rome, vi, 381. ----, memoir of, by _A. De Candolle_, xxiii, 303. ----, statue of, at Montbeliard, xxx, 184.

Cuyahoga, falls of, xxxi, 45.^f

Cyanhydric acid (or prussic,) _Magendie_ on, ii, 81. ---- ----, memoir on, by _B. L. Oliver_, iii, 182. ---- ----, ----, by _M. Orfila_, xviii, 157. ---- ----, apparatus for the evolution of, _R. Hare_, xxix, 244.^f ---- ----, extraordinary production of, _A. A. Hayes_, xviii, 201. ---- ----, preservation of, xvi, 260. ---- ----, effect of muriatic and sulphuric acids on, xviii, 146. ---- ----, cases in which administered, iii, 187. ---- ----, efficacy in asthma, vi, 366. ---- ----, effects of, on a horse, xii, 385. ---- ----, effects of, on vegetation, x, 190. ---- ----, chlorine an antidote for, xvii, 174; xxi, 157.

Cyanic acid, xvi, 258.

Cyanide of gold, a new, xlviii, 191. ----, of potassium, xviii, 329. ----, ----, preparation of, _Liebig_, xlvi, 202.

Cyanobenzoyle, xxvi, 273.

Cyanogen, formation of, _Dr. Cutbush_, vi, 149. ----, perchloride of, xvi, 257. ----, compounds of, _W. H. Ellet_, xviii, 329. ----, sulphuret of, xix, 378. ----, remarks on, xlvii, 192.

Cyathocrinites pyriformis, xlviii, 314.^f