Part 4

Argentine, notice of, _C. Dewey_, vii, 248. ----, analysis of, _C. Dewey_, vi, 333. ----, locality of, in Massachusetts, viii, 34.

Argento-cyanate of silver, for fulminating silver, xviii, 335.

Argento-cyanic acid, xviii, 334.

Argillaceous slate, in western Massachusetts, viii, 18, 21, 29.

Argillite, of the Connecticut valley, account of, vi, 35.

Aristotle, notice of, _C. Fox_, xxxvi, 217.

Armature, see _Electro-magnet_, and _Magnet_.

Arragonite, analysis of, _M. Stromeyer_, vii, 368. ----, in Canada, viii, 70. ----, in New York, xxi, 326; xxviii, 172.^f ----, of New Jersey, _J. Finch_, xviii, 197.

Arragonite and calc spar, _Becquerel_, xxiii, 387.

Arsenic, on the detection of, _L. Feuchtwanger_, xix, 339.^f ----, application of Riench's test, _D. P. Gardner_, xliv, 240. ----, on the detection of, _J. L. Smith_, xl, 278; xlii, 75.^f ----, tests for, iii, 354; iv, 155; xliv, 213. ----, on the iodide of potassium a test for, _J. P. Emmet_, xviii, 58. ----, tobacco a remedy for, xxxi, 188. ----, oxide of iron an antidote for, xxviii, 135. ----, effect of, on vegetation, _Daubeny_, xxxi, 346.

Arsenical iron, in N. York, xxi, 326. ---- ----, (Danaite) in N. Hampshire, analysis of, _A. A. Hayes_, xxiv, 386. ---- ---- ----, identical with mispickel, xlvi, 384.^f

Arsenious acid and sulphuric, a new compound of, xli, 47.

Artesian wells, see _Wells_.

Artificial minerals, _A. Crosse_, xxxi, 374. ---- diamond, pretended, xvi, 394. ---- feldspar, xxviii, 396. ---- sulphate of lime with half an atom of water, _J. F. W. Johnston_, xxxv, 300. ---- minerals, produced by heat, x, 190. ---- oxyd of iron, about furnaces, xxxvi, 237. ---- mineral waters, _S. Morey_, iii, 94.

Asbestus, in Connecticut, i, 354. ----, in Maryland, xviii, 80. ----, in Massachusetts, i, 114; viii, 47. ----, in New Hampshire, vi, 245. ----, in N. York, i, 237; ix, 40, 252. ----, in Pennsylvania, x, 221. ----, in Vermont, v, 40; vi, 249. ----, in anthracite, i, 243, 244. ----, covering for firemen, xviii, 177; xx, 96.^f

Asclepias, on the fibre of, xxviii, 380.

Ashes, shower of, at Vesuvius, iii, 374. ----, volcanic, at sea, west of the Philippines, _P. Parker_, xl, 198. ----, of two pines, composition of, xxvi, 182. ----, spontaneous combustion in, _O. P. Hubbard_, xlii, 166. ----, combustibility of, _J. T. Plummer_, xlii, 167; xliii, 80. ----, various properties of, _J. T. Plummer_, xliii, 85.

Asia, geology of the Deccan, xxxiii, 274. ----, Caucasus range and Persia, geology of, mines, salt, naphtha springs, &c. of, xxxvii, 348. ----, Catacecaumene, xxxiii, 95; xxxviii, 207. ----, shores of Black sea, xxxii, 399. ----, volcanoes of the continent and islands, in a review of _Daubeny_, xiii, 290.

Asparagin, xx, 187.

Aspartic acid, xvii, 173.

Asparagus, aspartic acid from, xvii, 173.

Asphaltic mastic, xxxiv, 383.

Assafetida, sulphur in, xv, 185.

Association, British, for the promotion of science, plan of, xxi, 373. ----, ----, notice of the meeting in 1832, xxiii, 179; 1833, xxv, 411; 1834, xxviii, 55; 1835, xxix, 347; 1836, xxxi, 332; 1837, xxxiii, 265; xxxiv, 1; 1838, xxxv, 275; 1839, xxxviii, 93; 1840, xl, 308; 1841, xli, 391; xlii, 147; 1842, xliii, 367; xliv, 158, 351; 1843, xlvi, 388; xlvii, 182. ----, ----, notice of Prof. _Whewell's_ address at 11th meeting, xli, 391. ----, ----, invitation from, to American men of science, xxxviii, 406. ----, scientific, or a Congress of Savans at Berlin, 1828, xvi, 386. ----, ----, in Germany, in 1830, xx, 175. ---- of American geologists in 1840, xxxix, 189; in 1841, xli, 158; 1842, xliii, 146; 1843, xlv, 135, 310; 1844, xlvii, 94; 1845, xlix, 219. ---- ---- ----, address before, by _E. Hitchcock_, xli, 232. ---- ---- ----, ibid, by _B. Silliman_, xliii, 217. ---- ---- ----, address before, by _H. D. Rogers_, xlvii, 137, 247. ---- ---- ----, constitution and by-laws of, xliii, 149. ---- ---- ----, publication of transactions of, xlv, 220.

Asteroid, see _Shooting star_.

Astronomy, state of, among the Zabians, _J. W. Draper_, xxviii, 203. ----, on the resistance in space to motion of heavenly bodies, xvii, 389. ----, ibid., _R. W. Haskins_, xxxiii, 1. ----, idea of ether in space, when introduced, xxxiii, 1. ----, theory of _Descartes_, xxxiii, 3.

Astronomical clock, Prof. _Bessel_, xliv, 160. ---- ----, on the stopping of, by _W. Howard_, viii, 277. ---- machine, for representing the motions of the earth and moon, _E. C. Leedom_, xlii, 338.^f ---- observatory, to be erected at Abo in Finland, iv, 386. ---- observations on Saturn, Jupiter and his satellites, by Prof. _Struve_, xiii, 172. ---- ---- at the Cape of Good Hope, _Herschel's_, xxxv, 283. ---- ---- and observatory, at Rome, _P. F. de Vico_, xliv, 373. ---- ---- at the observatory of Pulkova, xlvii, 88.

Atlantic steam navigation, _J. Smith_, xxxv, 160. ---- coast, gales of, see under _Winds_.

Atlas, white race of, xxxii, 400.

_Atlee, W. L._, on certain cavities in quartz, xxxv, 139.^f

Atmometer, a new, vi, 382.

Atmosphere, analysis of, _M. Brunner_, xxiii, 280.^f ----, composition of, xvii, 382. ----, on the carbonic acid of, from a memoir by _Saussure_, xvi, 214. ----, quantity of carbonic acid in, xx, 183. ----, carbonic acid in, _W. H. Watson_, xxviii, 71. ----, pressure of, v, 174; xxiv, 174. ----, compression of, in a mine of Bovey coal, xvii, 38. ----, annual movement in, xlii, 158. ----, extent of, _W. C. Redfield_, xxv, 123. ----, height of, at the equator, _J. P. Espy_, xxxix, 120. ----, general view of, _W. C. Redfield_, xxxiii, 50; average velocity of wind near the surface of the ocean, 52; temperature of elevation, 52. ----, effect of the rarefaction of, on its desiccation and refrigeration, xl, 44; formation of clouds a consequence of, 44. ----, luminous appearance in, iv, 341. ----, Prof. _Lloyd_ on the clearness of, at times, xxxiv, 7. ----, deductions with regard to the moon's influence on, xv, 174. ----, mercurial, iii, 386. ----, temperature of, see _Meteorology_ and _Temperature_. ----, during the coal period, _H. D. Rogers_, xlvii, 105. ----, of the planets, remarks on, xxv, 183.

Atmospheric air, on the dilatation of, _V. Regnault_, xliv, 63. ---- pressure, see _Barometer_. ---- tides, ix, 195. ---- dust, by _C. S. Rafinesque_, i, 397. ---- ----, reply to _C. S. Rafinesque_, ii, 134. ---- currents, see _winds_.

Atomic weights of bodies, _Dr. Thomson_ engaged in determining, iii, 396. ---- ----, _Turner's_ opinions respecting, xxviii, 70. ---- ----, observations on, Prout's hypothesis of, _J. J. Berzelius_, xlviii, 369. ---- ----, not multiples of that of hydrogen, xlvii, 187. ---- ---- of lead, sulphur, nitrogen and carbon, _Clark_, xxxviii, 119. ---- ---- of hydrogen, chlorine, potassium, calcium, glucinum, silver, uranium, cerium and lanthanum, xlvii, 188. ---- ---- of elements, _Marchand_ and _Erdmann_, --oxygen, hydrogen, carbon, nitrogen, calcium, chlorine, silver, lead, xliv, 215; of copper, mercury and sulphur, xlviii, 402. ---- theory, account of, by _J. Finch_, xiv, 24.

Atom, idea of, _J. D. Whelpley_, xlviii, 352. ----, _R. Hare_, on the views of Faraday, xlviii, 247. ----, nature of the crystalline, _J. D. Dana_, xxx, 275.^f

Attraction in liquids, inquiries into the principles of, xvii, 86.^f ----, chemical, modified by quantity of matter, _E. Mitchell_, xvi, 234. ----, magnetic, see _Magnetic_.

_Atwater, C._, prairies and barrens of the west, i, 116. ----, geology, mineralogy, botany, &c. of Belmont Co., Ohio, i, 226. ----, prevailing winds of Ohio and the west, i, 276. ----, on the geology, climate and diseases, &c. of Ohio, xi, 224.

_Audubon_, work on the birds of N. America, xvi, 353. ----, ---- ----, notice of, xlii, 130.

Augite, of Willsboro, New York, analysis of, _H. Seybert_, v, 113. ----, analysis of, _H. Seybert_, vii, 145. ----, in Connecticut, ii, 238; vi, 225; viii, 258; xii, 169. ----, in Maryland, xviii, 79. ----, in Massachusetts, i, 436; vii, 52; viii, 47; ix, 43; xii, 157. ----, in New Jersey, v, 243, 246; vi, 250. ----, in New York, viii, 88; ix, 244, 250; xix, 224; xxv, 347. ----, in Pennsylvania, viii, 239; xiv, 13, 17.

_Augur, H._, an American sculptor, notice of, ix, 173.

Aurora Australis, Pacific, S. lat., 58°, seen by _Capt. Cook_, Feb., 1773, xviii, 75.

Aurora Borealis, seen in Brit. America, _Capt. Parry_, xiv, 96; xvi, 148. ---- ---- ----, _Capt. Franklin_, 1820, xxxiv, 289. ---- ---- ----, Sept., 1827, xiv, 105.^f ---- ---- in Canada, Kingston, and elsewhere, _R. H. Bonnycastle_, Dec. 11, 1835, xxx, 131.^f ---- ---- ---- at Toronto, May 8, 1836, _R. H. Bonnycastle_, xxxii, 393.^f ---- ---- ---- at Toronto, May, 1840, xl, 337. ---- ---- in Denmark, Sept. 1827, xiv, 107. ---- ---- in Faroe and Shetland, viii, 392. ---- ---- in France, Sept., 1827, xiv, 107. ---- ---- ----, Aug., 1827, xv, 199. ---- ---- ----, Feb. 18, 1837, xxxii, 396. ---- ---- ----, Jan. 7, 1831, xx, 396. ---- ---- ----, April 1837, xxxiv, 285. ---- ---- ----, Oct., 1836, xxxiv, 288. ---- ---- ----, Aug. 19, 1726, xxix, 388. ---- ---- in Great Britain, in 1814, 1816 and 1819, xiv, 96. ---- ---- ----, Aug., 1827, xiv, 95. ---- ---- ----, Gosport, Sept., 1827, xiv, 108. ---- ---- ----, Feb. 18, 1837, London, xxxii, 396. ---- ---- ----, Nov. 1837, xxxiv, 283. ---- ---- ----, from Huxham's Auroral Register, 1728-1748, _E. C. Herrick_, xxxiii, 297. ---- ---- ----, May, June, July, Aug., 1837, Prof. _Christie_, xxxiii, 300. ---- ---- ----, September 1839, xxxviii, 264. ---- ---- ----, May, 1840, xl, 338. ---- ---- in Prussia, _M. Feld_, February, 1835, xxxiv, 285. ---- ---- Oswer Zornea, December, 1736, _J. Bowdoin_, xviii, 74. ---- ---- in the U. States, 1741-1757, _J. Winthrop_, xl, 204, 205, 206. ---- ---- ----, November, 1789, Hingham, Mass., _H. Ware_, xxxiv, 204. ---- ---- ----, Aug., 1827, _B. D. Silliman_, xiv, 91. ---- ---- ----, ibid, _L. D. Gale_, xv, 199. ---- ---- ----, March, 1781, xiv, 96. ---- ---- ----, Sept., 1827, _J. Bowdoin_, xviii, 72. ---- ---- ----, 1827-1833, at Wilmington, Delaware, _H. Gibbons_, xxxiii, 299. ---- ---- ----, Sept., 1829, _L. Feuchtwanger_, xviii, 393. ---- ---- ----, July, 1830, _M. Field_, (Fayetteville, Vt.,) xx, 262. ---- ---- ----, March, 1831, _M. Field_, (Fayetteville, Vt.,) xx, 263.^f ---- ---- ----, April, 1831, Albany, _J. Henry_, xxii, 143. ---- ---- ----, May and July, 1833, _A. D. Bache_, xxvii, 113.^f ---- ---- ----, 1832-1834, N. Jersey, _J. F. Jenkins_, xxvi, 395, 396. ---- ---- ----, Nov., 1835, _D. Olmsted_, xxix, 388. ---- ---- ----, ibid, _A. C. Twining_, xxxii, 227. ---- ---- ----, April, 1836, Emmetsburg, Va., _J. McCaffrey_, xxxi, 85. ---- ---- ----, July, 1837, _E. C. Herrick_, xxxiii, 144. ---- ---- ----, ibid, Rochester, N. Y., _C. Dewey_, xxxiii, 143. ---- ---- ----, Jan., 1837, _D. Olmsted_, xxxii, 176. ---- ---- ----, Nov., 1837, _D. Olmsted_, xxxiii, 393. ---- ---- ----, ibid, _F. A. P. Barnard_, xxxiv, 267. ---- ---- ----, July and August, 1837, Burlington, Vt., _J. Dean_, xxxiii, 212. ---- ---- ----, Feb., 1837, New Haven, xxxii, 396. ---- ---- ----, September, 1839, xxxvii, 375. ---- ---- ----, ibid, Rochester, _C. Dewey_, xxxviii, 146. ---- ---- ----, ibid, _E. C. Herrick_, xxxviii, 260. ---- ---- ----, ibid, Middlebury, Vermont, _A. C. Twining_, xxxviii, 376. ---- ---- ----, ibid, Princeton, N. J., _Prof. Alexander_, xxxix, 364. ---- ---- ----, May, 1840, _A. D. Bache_, xl, 48. ---- ---- ----, Nov., 1841, Marietta, Ohio, _S. P. Hildreth_, xlii, 346. ---- ---- ----, April, 1842, _E. C. Herrick_, xliii, 213. ---- ---- ----, May and Aug., 1844, New Haven, _E. C. Herrick_, xlviii, 319. ---- ---- in summer, Aug., 1827, xiv, 91; xv, 199. ---- ---- ----, Prof. Christie on, xxxiii, 300. ---- ---- ----, _E. C. Herrick's_ citations from Huxham's Auroral Register, xxxiii, 297. ---- ---- ----, ibid, from H. Gibbons's register, 1827-1833, xxxiii, 299. ---- ---- ----, from J. Winthrop's register, June, 1746, xl, 206. ---- ---- ----, Aug. 19, 1726, xxix, 388. ---- ---- ----, May, 1840, xl, 48, 338. ---- ---- ----, July, 1830, _M. Field_, xx, 262. ---- ---- ----, July, 1837, xxxiii, 143, 144, 212. ---- ---- ----, August, 1844, _E. C. Herrick_, xlviii, 319. ---- ---- corona, position of, in several auroras, _A. C. Twining_, xxxii, 227. ---- ---- ----, ----, _Prof. Alexander_, September, 1839, xxxix, 364. ---- ---- ----, ----, _D. Olmsted_, Jan., 1837, xxxii, 177. ---- ---- ----, ----, ibid, Nov., 1835, xxix, 389. ---- ---- ----, ----, _E. C. Herrick_, Sept., 1839, xxxviii, 260. ---- ---- ----, ----, _C. Dewey_, Sept., 1839, xxxviii, 147. ---- ----, needle agitated by, _M. Arago_, xiv, 107; xxxiv, 286. ---- ----, ---- ----, remarks on, xix, 246. ---- ----, ---- ----, Aug., 1827, _L. D. Gale_, xv, 199. ---- ----, ---- ----, Apr., 1831, _J. Henry_, xxii, 143. ---- ----, ---- ----, May and July, 1833, _A. D. Bache_, xxvii, 113. ---- ----, ---- ----, Feb., 1835, _M. Gauss_, xxxiv, 285. ---- ----, ---- ----, Nov., 1835, xxix, 390. ---- ----, ---- ----, April, 1836, _J. McCaffrey_, xxxi, 85. ---- ----, ---- ----, Jan., 1837, xxxii, 179. ---- ----, ---- ----, July, 1837, _E. C. Herrick_, xxxiii, 146. ---- ----, ---- ----, Nov., 1837, _A. B. Haile_, xxxiv, 270. ---- ----, ---- ----, Sept., 1839, _E. C. Herrick_, xxxviii, 261. ---- ----, ---- ----, May, 1840, Canada, xl, 337. ---- ----, wide extent of some, _E. C. Herrick_, xxxiii, 300. ---- ----, remarks on the number in Europe, xxviii, 58. ---- ----, remarks on the nature of, by the Ex-King of Sweden, v, 178. ---- ----, ----, ibid, _Thienemann_, x, 187. ---- ----, ----, ibid, xiv, 97; xvi, 290; xix, 235. ---- ----, ----, ibid, _Hansteen's_ views, xiv, 109. ---- ----, ----, ibid, _Ideler's_ views, xxviii, 289. ---- ----, ----, ibid, _J. Ross_, xxix, 348. ---- ----, ----, ibid, _B. F. Joslin_, attributing it to crystallized vapor, xxx, 390; xxxv, 145. ---- ----, ----, ibid, _F. A. P. Barnard_, xxxiv, 284. ---- ----, ----, ibid, _D. Olmsted_, xxxii, 180. ---- ----, ----, _Mr. Rowall's_ theory of, xli, 41. ---- ----, height of, _M. Mairan_, xxxiv, 288. ---- ----, ----, _M. Farquharson_, xxxiv, 288. ---- ----, ----, _D. Olmsted_, xxxiv, 286. ---- ----, ----, _M. Wartmann_, xxxiv, 288. ---- ----, ----, _M. Dalton_, xxxiv, 288. ---- ----, ----, _Dr. Richardson_ of Capt. Franklin's Expedition, xxxiv, 289. ---- ----, noises of, an illusion, _Capt. Scoresby_, xxviii, 58. ---- ----, ----, ibid, _D. Olmsted_, xxxiv, 289. ---- ----, periodical, _D. Olmsted_, xxxii, 177. ---- ----, no polarization by light of, _J. Henry_, xxxix, 366. ---- ----, work by _Mairan_, alluded to, xxix, 388; xxxii, 177.

Auroral cloud of Dec., 1835, _A. C. Twining_, height and position of, xxxii, 217.

Auroral arch of Aug., 1836, _A. C. Twining_, height and position of, xxxii, 220. ---- ---- of May, 1836, height of, _A. C. Twining_, xxxii, 224. ---- ----, in Vermont, Sept., 1838, _J. Dean_, xxxv, 380. ---- belt of May, 1840, _E. C. Herrick_, xxxix, 194, 383.

Aurum Millium, a new metal, ii, 363.

Auscultation, iii, 375.

Australia, minerals of, _F. Alger_, xxxix, 157.^f

Australian Boomerang, or Kilee notice of, xxxvi, 164.^f

Autumnal coloration of leaves, _Macaire Prinsep's_ view of, xvi, 215.

Automolite, locality in Connecticut, xii, 156. ----, ---- New Jersey, v, 402.

Aventurine feldspar, _M. Scheerer_, xlix, 394.

_Avogadro_, elastic force of the vapor of mercury, xxiv, 286.

Axinite in Canada, viii, 62.

Azote, see Nitrogen.

B.

_Babbage, C._, on the decline of science in England, xx, 164. ----, fees of admission to learned societies of Britain, xx, 165. ----, list of men of science who have held offices under governments, xx, 172. ----, number of members of some societies, xx, 173. ----, calculating machine and constants of, xxviii, 64. ----, analytical engine of, xlvi, 205.

Babel, tower of, xxxvii, 352.

_Bache, A. D._, safety apparatus for steamboats, xx, 317.^f ----, disturbance of the needle during the aurora borealis, xxvii, 113.^f ----, on the meteors of Nov. 13, 1833 and 1834, xxix, 383. ----, influence of color on radiation, xxx, 16. ----, radiation and absorption of heat, specific heat, and apparatus for illustrating, xxviii, 320.^f ----, corresponding magnetic observations by, along with _Prof. Lloyd_ of Dublin, xli, 210. ----, effect of deflected current of air, on the results with a rain gauge, xxxv, 287. ----, appointed to the coast survey, xlvi, 213.

_Bachman, J._, on the migration of the birds of North America, xxx, 81.

_Bacon, Lord_, some notice of, _C. Fox_, xxxvi, 220.

_Baddely, F. H._, on the red color of the flame from strontian, xviii, 261. ----, a new instrument for taking specific gravities, xviii, 263.^f ----, on the sulphate of strontian of Kingston, U. C., and on the geology of the vicinity, xviii, 104. ----, buoyancy of boulders at great depths, xxviii, 111. ----, gold in Lower Canada, xxviii, 112. ----, water limerock of Quebec, xxviii, 113. ----, cement of the Castle Rock, Quebec, xxviii, 367.

_Baily's_ method of determining longitude, notice of, _E. Hitchcock_, ix, 107.

_Bailey, J. W._, grasshoppers' legs, a substitute for frogs in galvanic experiments, xxxi, 292. ----, washing-bottles, forms of, xxxi, 292.^f ----, on the common blowpipe, xxxii, 319.^f ----, excursion to Mt. Katahdin, Me., xxxii, 20.^f ----, list of some plants in Maine, xxxii, 23. ----, new test for nitric acid, xxxii, 85.^f ----, locality of hyalite, xxxii, 87. ----, effect of a current of air on flame, xxxii, 88.^f ----, on the vascular system of ferns, xxxv, 113.^f ----, monstrous flower of Orchis spectabilis, xxxv, 117.^f ----, on yellow showers of pollen, xlii, 195.^f ----, on a curious fungus, Craterium pyriforme, xlii, 195. ----, on the crystals in the tissues of plants, xlv, 149; xlviii, 17.^f ----, fossil polythalamia from the upper Mississippi and Missouri, xli, 400.^f ----, ---- ----, in the U. States, xlviii, 340.^f ----, on fossil infusoria, in peat earth, West Point, N. Y., xxxv, 118.^f ----, infusoria of the family Bacillaria, xli, 284^f; xlii, 88^f; xliii, 321^f; localities, xliii, 328, 329.^f ----, ---- from Oregon, the Bermudas, Virginia and Maryland, with an extended catalogue, xlviii, 321.^f ----, ---- of New Haven harbor, xlviii, 337.^f ----, ---- of Charleston harbor, xlviii, 338.^f ----, ---- of N. Scotia, xlviii, 339. ----, ---- with bones of Mastodon, xlviii, 339. ----, ---- from Virginia, xlv, 313; xlvi, 137,^f 300; xlviii, 330. ----, ---- from Maryland, xlvi, 137^f; xlviii, 330.

_Baird, W. M._ and _S. F._, list of birds found near Carlisle, Penn., xlvi, 261. ----, two new species of Tyrannula, xlvi, 273.

_Baker, G._, vibrations of a mercurial pendulum, xlviii, 156.

Baking, a machine for accelerating fermentation of flour, ix, 198.

Balance, application of the principle of, to milking, churning, &c., _H. Strait_, xxvii, 92.^f

Balance beam, Patten's, ix, 92.^f

_Balande's_ collections of objects in natural history in Africa, iv, 373.

_Baldwin, Wm._, two new species of Rottböllia, i, 355.

_Ball, J._, remarks upon the geology and features of the country west of the Rocky Mountains, xxviii, 1.

Ball's cave, Schoharie, notice of, xxvii, 368.

Balloon with rarefied air, xii, 372. ----, effect of solar heat in raising, _J. Rae_, xxxiii, 196. ----, principles of aerial navigation, _H. Strait_, xxv, 15.^f ----, a means of making meteorological observations, xlii, 150. ----, observations during an ascent of, by _Eugene Robertson_, xii, 166, 325.

_Banks, J._, herbarium of, xl, 9.

Bare Hills, Maryland, _H. H. Hayden_, xxiv, 349.^f

Barium, extrication of, _R. Hare_, xxxvii, 267; xxxviii, 115; xxxix, 362. ----, method of preparing the deutoxide of, xvi, 395.

Bark, Peruvian, experiments on, by _G. W. Carpenter_, ix, 363.

Barlow, P., instruments for illustrating the effects of electro-magnetism, v, 396.^f

_Barnard, F. A. P._, aurora borealis of Nov. 14, 1837, xxxiv, 267. ----, improvement in the Daguerrotype process, xli, 352.

_Barnes, D. H._, geological section of the Canaan Mt., N. Y., v, 8. ----, on some doubtful reptiles of North America, xiii, 66. ----, notice respecting magnetic polarity, xiii, 70. ----, ----, reply to, xiv, 121. ----, on the genera Unio and Alasmodonta, vi, 167,^f 258.^f ----, new species of Chiton, vii, 69.^f

Barometer, construction of, in America, _J. Green_, xxvii, 292. ----, new construction of, _J. L. Riddell_, xxvii, 223.^f ----, improvement of, _C. F. Durant_, xxvii, 97.^f ----, new form of, _J. H. Alexander_, xlv, 233.^f ----, new self-registering, xlix, 400. ----, effect of sound on, xxx, 377. ----, directions regarding, by _E. Mitchell_, xx, 364.^f ----, siphon, in determining the temperature of the mercury in, by observation, xl, 250.^f ----, water, constructed in London, xxiv, 198. ----, remarks on, _W. C. Redfield_, xxv, 129. ----, use of, at sea, _W. C. Redfield_, xxv, 198. ----, changes in the column, as connected with the progress of a storm, _W. C. Redfield_, xx, 45; xxv, 117; xxxi, 127; xxxiii, 262. ----, variations of, _W. C. Redfield_, xxxiii, 262. ----, ----, semi-diurnal, xxxiii, 263. ----, ----, from accumulation of atmospheric pressure owing to obstacles in the course of winds, xxxiii, 264. ----, oscillation of an extensive region in the higher or temperate latitudes, xxxiii, 264. ----, changes during a storm, _E. Loomis_, xl, 34. ----, ----, ibid, _J. P. Espy_, xxxix, 123. ----, ----, ibid, _M. Dové_, xliv, 315. ----, ----, remarks on, _W. S. W. Ruschenberger_, xxxiii, 345. ----, cause of the daily fluctuations of, _Espy_, xli, 42. ----, at the equator indicating time by its oscillations, ix, 195. ----, a substitute for, in measuring heights, _J. Robison_, xxxv, 294. ----, tube, filled with mercury without using an air pump, _Stevelly_, xxxviii, 109. ----, _Hudson's_ series of investigations with, xxiv, 393.