INDEX. 



403 



Electrotome and electrepeter described, 

 112. 



Employment of Uviilaria perfoliata, 270. 



Encke's comet observed, 388. 



Encrinite, fossil, by J. G. Anthony, 359. 



Engine, electro-magnetic, 343. 



with reciprocating ar- 

 mature, 263. 



Erdmann and Schweigger's Journal, ex- 

 tract from, 356. 



Espy, his theory of storms tested, 208. 



Ether, on a new one by Dr. Hare, 329. 



Excursion, geological, 309. 



Exley, Mr. Thos., on specific gravity of 

 gases, 298. 



on chemical combinations, 302. 



Experiments in magnetic electricity, 252. 



E.xploring expedition to the South Seas. 

 192. 



Extreme heat at Cumberland, Md., 190. 



Falco Islandicus, 310. 



Ferns, vascular system of, by Prof. Bai- 



ley, 113. 

 Feuchtvvanger's treatise on gems, 189. 

 Fish with four eyes, 309. 



British, 309. 

 Fires in London, 316. 

 Flora of North America, 180. 

 Florida, East, notices of, 47. 

 Fluor spar, new phenomenon of color in, 



295. 

 Forbes, notice of subterranean heat and 



of a brine spring emitting carbonic 



acid, 293. 

 Fossil animals collected by Mr. Darwin, 



196. 

 Fossils, as characteristic of strata, 237. 

 Fossil fish in red sandstone of New Jer- 

 sey, 192. 



Encrinite, 359. 

 Infusoria, 118, 311,371. 

 shells and bones at Savannah, 380. 

 teeth, by Prof Owen, 307. 

 Fox, a mineral vein obtained by him by 



galvanism, 308. 

 Fresh-water fish of Europe, by Agassiz, 



400. 

 Frozen ground of Siberia, 305. 



G. 



Galactin, Dr. Thomson on, 303. 



Gale, Dr. L. D., on fossil fish in red sand- 

 stone of New Jersey, 192. 



Galvanometers, circular, 259. 



Gamboge, resin of, 304. 



Gases in the blood, experiments on by 

 M. Magnus, 198. 



Gaseous compounds formed by the ele- 

 ments of water, 328. 



Gases condensed by Dr. Torrey, 374. 



Gaylord, Mr. W., his note on the me- 

 teoric shower of Nov. 1838, 370. 



Gems, treatise on, 189. 



Geography and geology of British Asso- 

 ciation, 304. 

 Geology, American, notes on by T. A. 

 Conrad, 237. 



of Antigua, 75. 



Elements of, by Lyell, Ameri- 

 can edition announced, 385. 



new edition of Bakewell, 385. 

 of St Croix, 64. 

 of Florida, 60. 

 of North America, 307. 

 of Maine, 387. 



and topography of western New 

 York, 86. 



Mantell, wonders of, 384. 

 science of, from Glasgow trea- 

 tises, 387. 

 Geological excursion, 309. 

 surveys, 384. 



specimens sent from the In- 

 dian Archipelago, 381. 

 Gibbs, Geo., notice of false aurora, 381. 

 Glover, on rete mucosum and pigmen- 



tum nigrum, 313. 

 Gold, T. S., new locality of Crichtonite, 



179. 

 Godfrey, his grave discovered, 389. 

 Gold, easy mode of cupelling for, 321. 

 Goniometer, portable reflective, 303. 

 Graves on a general geometric method, 



296. 

 Graves of Godfrey and Chas. Thomson 



discovered, 339. 

 Gray, Asa, notice of Flora of North 



America, 180. 

 Gray, J. E., angular lines on certain 

 moUusca, 310 



on the boring of the Phola- 

 des, 312. 



on a British shell, 309. 

 Greenhow, on mercury in neuralgia, 



313. 

 Griffith, account of geological map of 

 Ireland, 306. 



H. 



Halley's comet, remarkable phenome- 

 non of, 285. 

 Handyside, Dr., on Sternoptixineas, 312. 

 Hancock, J., Falco Islandicus, 310. 

 Hare, Dr. Robt., on a new ether and 

 gaseous compounds formed with the 

 elements of water, 329. 



calcium obtained by him, 391. 

 fusion of platina in mass, 328. 

 refutation of Maugham's 

 charge, 331. 

 Harris, Mr. Snow, meteorological obser- 

 vations made at Plymouth, 297. 

 Hayes, Geo. E , on diluvial cun'ents,191. 

 on the geology and topogra- 

 phy of western New York, 86. 

 Helix, double, for inducing magnetism, 

 261. 



