J^' 



498 lisBEx, 



Rolled Stones, 28 



Rome, Clergy and Population of, 186 



St. Lawrence, Mineralog'y of the shores of, 39S 

 Salisbury Moving Rocks, 136, 144, 239 

 Saratoga Lake, Dr. Steele's Notice of, 1 

 Sculpture, American, 173 



Sicily, Prof. Ferrara on the Earthquakes of, 216 

 Silicium obtained from Silex, 377 



Skene, James, Esq. on the Emigration of Caterpillars, 284 

 Snake-Hill and Saratoga Lake, Notice of, 1 

 Soap, 189 



Society, Linnasan, of Paris, 154 — Belfast Natural History, 381 — Ame- 

 rican Geological, 387 

 Spiral of Archimedes, Mr. Quinby on the, 316 

 Spodumene, 20 

 Steam-Boats, 184 

 Steam-Engines, 203 



— Perkins's, 206 



Steel tempered, the action of Iron in motion on, 324 



Steele, Dr. J. H. on Snake-Hill and Saratoga Lake, 1— Oolitic Forma-" 



tion of Saratoga County, 16 

 Sulphur, its use in Rheumatism, 169 

 Sulphurous Acid, Liquefied, 195 

 Swallows, destroying Caterpillars, 20O 

 Syphon, 198 



Tests for Copper and Iron, 201 



Tides, Atmospheric, 195 



Torrey, Prof, on West-Point Minerals, 402 



Trigonometer, Mr. BoUes's, 401 



Twining, A. C. his New Method of Resolving Certain Equations, 86 



University of Warsaw, 186 



Urocerus, an Insect, Mr. Foggo on, 288 



Van Rensselaer, Dr. J. on Lightning-Rods, 331 

 his Geological Lectures, 397 



Wallace, Prof, his Reply to B. on Algebraic Series, 98 Remarks on 



this Reply, 293 

 Wallestein, M. his Meteorological Tables, 394 

 Walmstedt, Prof, on Prehnite and Olivine, 378 

 Washington City, Meteorological Tables kept at, 394 

 Watch-makers' Oil, 202 

 Water, Compressibility of, 189 

 Water- Wheel, Overshot, Mr. Quinby on the, 304 

 Water- Wheels, on their Acceleration in Night and in Winter, IIM 

 Weather, Cold, on Lake Superior, 395 



= Hot, 395 



Wood, J. on the Moving of Rocks by Ice, 144 



Zircon, 45 



Zirconium obtained from Zircon, 377 



Zurich, Societies in, ,184 



