INDEX TO YOLUME XXXIX. 



Abbot, J. H., theory of the pneumatic 



paradox, 296. 



Samuel, obituary notice of, 318 

 Acad. Nat. Sci. of Philad. notice of their 



Journal, 395. 

 Accra, elements of the language of, 255. 

 Adams, C. B., descriptions of new shells 



373. 

 Africa, South, plants of, 173. 

 Agassiz, L. notice of his fresh-water 



fishes of Europe, 390. 

 Alexander, S., on Aurora Borealis of 



Sept. 3, 1839,364. 

 Alger, Francis, notice of minerals from 



New Holland, 157. 

 American Philos. Society, proceedings 



cf, 361. 

 Antiaris toxicaria, its juice analyzed 



206. 

 Apophyllite from New Holland, 158. 

 Arnott and Hooker's Botany of Beech 



ey's Voyage, 172. 

 Association, American Statistical, 395. 

 of American geologists, 189. 

 Astronomical Observations, 361, 367. 

 Audubon's birds of America, review of, 



343. 

 Auroral belt of May 29, 1840, 194, 383. 

 Aurora Borealis of Sept. 3, 1839, 364. 



B. 



Barium, extraction of, 362. 



Barratt, Joseph, table of closing and 

 opening of Conn, river, 88. 



Barton, M. H., proposed reform of Eng- 

 lish orthography, 197. 



Bell's British Reptiles, noticed, 185. 



Berres, on engraving from Daguerreo- 

 types, 385. 



Birds of America by Audubon, review 

 of, 343. 



Bone Cavern, 399. 



Boston Soc. of Nat. Hist., proceedings 

 of, 182, 373. 



Botanical works noticed, 168. 



Bourne, A., donation of shells to Yale 

 College cabinet, 195. 



Bradford Coal field, examination of, 137. 



Bunker's Hill, Trumbull's painting of the 

 battle of, 219. 



Burgoyne's surrender, Trumbull's paint- 

 ing of, 234. 



Burksville, petroleum oil well at, 195. 



Byssus of the Naiades, 166. 



C. 



Calcium, extrication of, 362. 

 Carburetted hydrogen discharged from a 



pond, 200, 399. 

 Caricography, 50. 

 Central forces, 262. 

 Chalk powdered, coralline animalcules 



in, 205. 

 Chemistry, elements of by Alonzo Gray, 



" J. Johnston, 



193, 391. 



Coal, anthracite, analyses of, 139. 



Coal field of Carbon Creek, Pa., exam- 

 ination of, 137. 



Combe, Geo., notice of his lectures on 

 .phrenology, 65. 



Comstock, J. J., account of a meteor, 

 382. 



Connecticut river, table of time of open- 

 ing and closing, 88. 



Conrad, T. A., on new fossil shells, 387. 



Cornwallis, surrender of, painted by 

 Trumbull, 238. 



D. 



Daguerreotypes, engravings taken from, 



385. 

 DeCandolle's Prodromus noticed, 168. 

 Declaration of Independence, Trumbull's 



painting of, 226. 

 Dewey, Chester, on Caricography, 50. 

 Dip, magnetic, in the U. S.,47, 319. 

 Divisibility infinite, of matter, 55. 

 Dwight, Pres., sketch of, 244. 



E. 



Earth, igneous theory of applied, 90. 



Earthquake in Connecticut, 335. 



East Haddam, subterranean noises at, 

 336. 



Eaton, Amos, on equivalence of Ameri- 

 can and European strata, 149. 



Edwardsite, its identity with Monazite, 

 249. 



Ehrenberg on diffusion of coralline ani- 

 malcules, 205. 



Electricity, Faraday's letter to Hare, con- 

 cerning, 108. 



in machinery, 134. 



Endlicher's Genera Plantarum noticed, 

 170. 



English orthography, proposed reforms 

 of, 197. 



Entomological cabinet for sale, 211. 



