188 INDEX. 



Stars, catalogue of, in the comet of Encke, xix. 119. A falling 

 star seen at mid-day, 369. Observations on the apparent dis- 

 tance and position of four hundred and sixty double and triple, 

 XX. 297. See Fixed Stars, 



Statistics of America, x. 203 



Statuary marble quarries, notice of newly discovered, in Tus- 

 cany, xii. 19a 



Stavesacre, new vegetable alkali found in, viii. 154 



Steam, action of, on solution of silver and gold, xvi. 162 



Steam-boats, extended use of, vi. 136 



' list of, employed on the river Mississippi, viii. 152. 



List of those now building, 153. Account of the progress of 

 steam-navigation in Great Britain, 240. List of, now plying 

 on the river Clyde, 241 



Steam-engines, observations on the explosions of, iii. 195 



■' — of England, remarks on the power of, xii. 404 



■ indicator for, description of, xiii. 91 



—— — '— method of securing, xviii. 3S5 



. of Glasgow, number and horse-power of, xix. 328 



Steam-pits for forcing plants, notice of, viii. 340 



Steam-plough, remarks on the practicability of, vii. 54 



Steel, properties of, v. 298 



• (Indian), analysis of, vii. 288 



Persian mode of making, viii. 160 



■ experiments on the alloys of, with a view to its improve- 

 ment, ix. 319. xii. 173, 316. xiv. 377 



— — goods, process for preserving, xiii. 424 



on the magnetism of, and iron, by percussion, xiv. 376. 



xvii. 254 



cutting of, by soft iron, xvi. 155 



experiments on the elasticity and strength of hard and 



soft, xvii. 267. xix. 104 



' action of iron in motion upon, xviii. 160. Menstruum for 



etching steel plates, .^75. Mode of preparing damasked steel, 

 386 



explanation of the cutting of, by iron, xx. 383 ; and ii;on, 



