INDEX TO VOLUME XL. 



Abbot, J. H., new electro-magnetic in- 

 sti'umRnts, 104. 



note on pneumatic paradox, 144. 



Acta30n, two species of, described, 94. 



Adams. C. B., on the mollusca of Mid- 

 dlebury, Vt., 266, 408. 



Agriciillural survey of R. I., 182. 



Agriculture, chemistry of, by Liebig, 177. 



Alcohol, action of on alkalies, 216. 



American Philos. Soc, proceedings of, 

 27, 374. 



Ammonia, its existence in the atmos- 

 phere, 180. 



Analysis of alluvium of the Nile, 190. 

 soils, 189, 198. 



Anamilic and Latin Dictionary, notice 

 of, 43. 



Anlarciic continent, discovery of, 394. 



Anihraciic coals, analyses of, 373. 



Arsenic, how detected in the body, 278 

 how counteracted, 2D2. 



Ashes, volcanic, shower of, 198. 



Atomic theory, Daubeny's work on, 197. 



Aurora .'\ustralis, 398. 



Borealis, 204, 2C6. 



of May 29, 1840, 48, 337. 



B. 



Bache, A. D., observations of magnetic 

 dip, 374. 



magnetic intensity 

 in Europe, 30. 



Barium, extrication of, 293. 



Barometer, siplion, temperature of mer- 

 cury in, 2.51). 



Benedict, F N., on corrections of siphon 

 barometer, 250. 



Bergen, N. J., zeolites found at, 69. 



Beryl, new variety of, 401. 



Bibliographical notices, 165, 391. 



Blumenbach, J. F., death of, 219. 



Blunt, E., observations of solar eclipses, 

 29 



Bonnycastle, Chas , insufficiency of Tay 

 lor's theorem, 42. 



power of fluids in mo- 

 tion, 32. 



Boston Journal of Nat. Hist., 196. 



Soc. of Nat. Hist , proceedings of 

 386. 



Botanical herbaria of Europe, 1. 



Botany, Hooker's Journal of, 172. 



of north part of N. America, 173 



Bourne, A., on glass for optical instru 

 ments, 207. 



Bourne, W. O., on localities ofzeolites,69. 

 Bowman, J. E., on fossil infusoria, 174. 

 Boye on a perchloric ether, 50, 382. 

 Brewster, Sir D., on decomposilion of 

 glass, 324. 



hourly meteorological ob- 

 servations, 321 . 



rings of polarized light in 

 decomposed glass, 325. 



muscc8 volitantes, 333. 

 line of visible direction, 

 334. 



vision with the head in- 

 verted, 343. 

 British Association, proceedings of 10th 



meeting, 308. 

 Buccinum, new species of, described, 100. 



C. 



Calcium, extrication of, 293. 

 Cancellaria, new species of, described, 99. 

 Candles, burning, motion of particles in, 



148. 



Canker worm, parasite of, 211. 

 Chase. Capt., on volcanoes of Hawaii, 117. 

 Chemistry, organic, of Liebig, 177. 

 Chinese writing, nature of, 37. 

 Coal, anthracite, analyses of, 373. 



containing iodine, 217. 

 Cold-Bokkeveld meteorite, 199.^ 

 Colors, inability to distinguish, 54. 

 Columba migratoria, roosts of, 348. 

 Comet, Gaile's second, notice of, 40. 

 Comets, new, 207. 



tails of, remarks on, 59. 

 Compass, invention of, 242. 

 Conchology of Middlebury, Vt., 266. 

 Condensation of vapor, eflecls of, 44. 

 Conus, new species of, described, 103. 



D. 



Daguerreotype and its applications, 137. 



Daubeny on the atomic theory, noticed, 

 197. 



Dead sea, level of, 213. 



Deflagration of carburets, phosphurets or 

 cyanides, 303. 



Dip, magnetic, in the United States, 85, 

 149,374. 



Du Pasquier on iodine as a reagent for 

 hydrosulphuric acid, 123. 



Du Ponceau on Chinese system of wri- 

 ting, 37. 



E. 



Earthquakes, 204, 206, 376. 

 Eclipses, solar, observations of, 29. 



