424 



INDEX. 



R. 



Rail roads in Austria, 174. 



Railway, how cleared from snow, 166- 



Redfield, W. C, on storms of the Atlantic 



coast, 17. 



Reflecting' goniometer, remarks on, 158. 

 Rennel, Maj. J., notice of, 304. 

 Renwick, Prof., review of his work on 



steam engines, 322. 

 Rocks, new arrangement of, 182. 

 Royal Society of London, notice of, 172. 

 Rumker, C.,on currents in the ocean, 180. 

 Ruschenberger, Dr., on the botany of 



Chile, 248. 

 Russian Universities, 176. 



s. 



St. Petersburgh Academy of Sciences, 389 

 Salicine, 384. 



Salt springs of Moutiers, 219. 

 Sargasso weeds, 181. 

 Schoolcraft, H. R., notice of his discourse, 

 166. 



letter on the tide of 



Lake Superior, 213. 



Scratches on greywacke, 124. 

 Sea salt containing arsenic, 193. 

 SeruUas, on iodic acid and morphine, 184. 

 Shepard, C. U., extracts from foreign Jour- 

 nals by, 197. 



experiments with Henry's 



magnet, 201. 



Shooting stars, 153. 



Siberian elm, notice of, 377. 



Silliman, Prof, Elements of Chemistry 



by, 96. 

 Silver, chloride of, 193. 

 Smithson, Mr., notice of, 306. 

 Societies, literary and scientific of Canada, 



172 

 Solar halos, 297. 

 Specification of an improvement in steam 



boilers, 10. 

 Statistics of New York, 147. 

 Steam, on the rapid production of, 308. 

 Steam boat, description of an economical 



one, 14. 

 Steam boats, means of safety in, 1. 



safety apparatus for, 317. 



proposal to build, 163. 



Steam boilers, fuel for, 133. 



Steam engine, premium for a safe one, 178. 



treatise on, 322. 



Stewart, Rev. C, on Sandwich Islands,229. 

 Storms of the Atlantic coast, 17. 



remarks upon, by Prof. Mitchell,361 . 



Strong, Prof., on Central forces, 65, 291. 

 Sullivan,J.L. description of a steam boat,14. 

 improvement in steam boil- 



ers, 10. 



Sugar from starch, 195. 



on safety of steam boats, I. 



Sulphuric acid, smoking, 347. 



crystaline compounds in, 



384. 



Sulphate of copper in bread, 269. 

 potash and copper, 195. 



T. 



Taste, the seat of, 180. 



Tempering of metallic wires and springs, 

 393. 



Ten Eyck, Dr., account of a large elec- 

 tro-magnet, 201. 



Thenard's System of Chemistry, notice 

 of, 94. 



Thomas, E., on the achromatic micro- 

 scope, 265. 



Thompson, Wm. A., account of marks on 

 graywacke, 124. 



Thomson, Dr., on light and heat, 93. 



Thunder storms in Switzerland, 178. 

 France, 395. 



Tides of the North American lakes, 205, 

 Topaz of the White Mountains, 410. 

 Transition rocks of the Cataraqui, 74. 

 Trap, and rocks altered by it, 170. 

 Tullia Pycndnthemoides, anew plant, 343. 

 Turner's Elements of Chemistry, 88. 



u. 



Ure's Dictionary, 93. 

 Ure, Dr., on the composition of gunpow- 

 der, 190. 



V. 



Vanadium, a new metal, 386. 



Van Rensselaer, Gen., note on Eaton's 



survey, 419. 

 Vaporization, limits to, 189. 

 Volcanic region of Hawaii, 228. 

 Kirauea, 229. 



Volcano in New Zealand, 381. 

 Voltaic electricity, 177. 



w. 



Water, on the decomposition of by atmos- 

 pheric electricity, 179. 



Water, decomposition of, 186. 



Webster's Manual of Chemistry, 89. 



Wells, bored for water, 392. 



Wheeler, A. D,, solution of a problem by, 

 295. 



Whiting, H. Maj., on the tides of the N. 

 A. Lakes, 205. 



Wilder, C, on analytical geometry, 285. 



Wires, covering for, 409. 



Wirtemberg, kingdom of, 176. 



Wolves, stock destroyed by them in Rus- 

 sia, 177. 



Wood, charring of at low temperatures, 

 189. 



z. 



Zeolite, recent formation of, 382. 



