Part 7

_Brewster, D._, on the distribution of the coloring matter and the optical properties of the Brazilian topaz, vii, 364. ----, a new fluid in minerals, vii, 186. ----, new structure in the diamond, xxxiv, 37. ----, monochromatic lamp, vii, 363. ----, double refraction resulting from pressure, xxi, 296. ----, cause of double refraction in crystals, xxi, 299. ----, on the polarization of light by reflection, xxii, 277.^f ----, on the action of second surfaces of transparent plates upon light, xxiii, 28.^f ----, laws of the polarization of light by refraction, xxiii, 225.^f ----, a new properly of light, xxxiv, 20. ----, a new kind of polarity in homogeneous light, xxxv, 292. ----, new discoveries with the spectrum, xliv, 163, 164. ----, dichroism of some palladio-chlorides, xliv, 165. ----, on the cause of muscæ volitantes, xl, 333. ----, on the decomposition of glass, and on the polarization of decomposed glass, xl, 324, 325. ----, on the line of visible direction, along the axis of vision, xl, 334. ----, cause of increase of color when objects are seen with the head inverted, xl, 343. ----, action of gaseous and other media on the solar spectrum, xlii, 157.

_Brewster's_ (_Gilbert_) frame for spinning wool, notice of, x, 130.

Brewsterite, xx, 198.

Bricks of the ancients, xxvi, 234. ---- made near Jamaica, N. Y., xxxvi, 21. ---- made by a press, vi, 396. ----, use of anthracite in the making of, _W. Meade_, xviii, 118. ----, fire, made at Bennington, Vt., xxxii, 195; xxxiii, 202.

Bridge-building, _Town's_ new mode of, iii, 158^f; xxxviii, 276.^f

Bridge, description of, _G. W. Long_, xviii, 123.^f ----, chain, in progress, over the Menai, an arm of the Irish sea, vi, 384.

Brines, see _Salt_ and _Springs_.

_Bringier, L._, geology, mineralogy, aboriginal inhabitants, &c. of the regions of the Mississippi, iii, 15.

Bromine, discovery of, by _M. Balard_, xii, 198. ----, nature of, xiii, 398. ----, new compounds of, xiv, 386. ----, preparation of, xviii, 154. ----, and iodine, atomic weight of, _Berzelius_, xix, 383. ----, hydrate of, xx, 194. ----, combinations of, _C. Löwig_, xviii, 153. ----, and iodine in mineral waters, remarks on, _Prof. Daubeny_, xxi, 366. ----, and iodine in the Baltic, xix, 382. ----, in the Salina brines and Saratoga waters, xviii, 142. ----, in the Kenawha waters, xviii, 260. ----, in the Hingham salt works, Mass., xx, 161. ----, and iodine in the salt springs at Athens, Ohio, _W. W. Mather_, xlix, 211.

_Brongniart, Al._, miscellaneous geological and mineralogical observations, iii, 216. ----, on the art of pottery and vitrification, new work of, xxxi, 134. ----, on organized remains, notice of, i, 71; iv, 396. ----, seven classes of rocks, xxxix, 149. ----, zoological characters of rocks, and the application of these characters to determining some strata of the chalk era, viii, 213.

_Brongniart, Ad._, on the nature of the vegetables of the earth at different epochs of its formation, xxxiv, 315.

Bronzing iron and gun barrels, method of, xxx, 173.

Bronzite, analysis of, (Seybertite,) _T. G. Clemson_, xxiv, 171. ----, locality of, in New York, xvi, 185; xxi, 327.

Brookite, xviii, 392.

_Brown, S._, substance accompanying the native nitre of Kentucky, i, 146.

_Brown_, production of silicon from paracyanogen, xli, 208.

_Brown's_ active molecules, xvii, 390.

Brown spar in Massachusetts, viii, 235; in New York, ii, 237.

_Browne, J. B._, impression in marble, xix, 361.^f

_Bruce, Archibald_, biographical notice of, i, 299.^f

Brucite, see _Chondrodite_.

Bubbles, blown in melted rosin, ii, 179.

_Buckland, Prof._, Bridgewater Treatise of, noticed, _C. Lyell_, xxxiii, 112. ----, instructions for conducting geological investigations and collecting specimens, iii, 249. ----, on the vitality of toads enclosed in stone or wood, xxiii, 272.

_Buckley, S. B._, botanical labors of, xlii, 12. ----, new species of plants, xlv, 170. ----, skeleton of a Zygodon, xliv, 409.

_Buel, J._, excrementitious matter thrown off by plants, xxviii, 267.

Buhrstone in Indiana, i, 132. ----, in Missouri, iii, 28. ----, of Ohio, xxix, 142; xxv 233.

Building stone, expansion and contraction of, by variations of temperature, _W. H. C. Bartlett_, xxii, 136.^f ----, ---- in western New York, xxxvi, 45.

_Burden's_ boat, introduced into France, xxx, 174.

_Burgess, A._, a notice of bees, xxii, 164.

_Burnett, G. T._, on the functions of vegetable life, xxi, 153.

Burning well, Ohio, xlix, 406.

Burns, a tried cure, xxvi, 188.

_Burritt, E. H._, on the elements of the solar system, xxvi, 129.

Bustamite, xviii, 392.

Butter, depuration of, xxiv, 200. ----, preservation of, xviii, 145. ----, volatile acids of, _J. U. Lezch_, xlix, 202.

Butterflies, emigration of, xiv, 387.

Butyric acid from fibrin, xlviii, 186. ----, ether, action of ammonia on, xlviii, 191.

_Byrne, O._, mode of determining heights, xliv, 12.^f

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.