INDEX. 403 



Secondary granite, 186 



Series, new algebraic, 278 



Sewers, furnace for ventilating, 177 



Seybert H. analysis of Pyroxene from Sparta, N. J. 145 



Sheet Iron, soldering of, 379 



lead, Chinese process for making, 391 



Shepard C. U. Yenite and green feldspar, 251 



Slates Artificial, 191 



Society Geological, American, 358 



of Christian morals at Paris, 189 



for the encouragement of National Industry, Paris, 198, 



371 



industry, St. Gall, 381 



for promoting Elementary instruction, 199 



Soldering Sheet iron, 379 



Sphene, 53 ■ ! 



Steam engine, description ofPerki^new, 111 



, application of New principles to boilers of the old 



construction, 116, 332 



-, employment of potatoes in the boilers of, 193 



Steel, cutting of by soft iron, 342, 390 



Sterling Limestone, 52 



St. Gall, Society for the encouragement of industry &c. 381 



Stones of memorial and sacrifice, 153 



Strode T. on a silicious petrifaction from N C. 249 



Stromeyer's analyses, 368 



Sugar loaf mountain, 9 



Sulphate of Rhubarb, 385 



of Strcntian, 46 



Sulphur in granite, 56 



Sulphuretted Hydrogen, condensation of, 354 



Sulphurous acid, condensation of, 353 



Sunderland cave, 19 



Superior, copper of Lake, 43 



Switzerland, 381 



T. 



Talc, 55 



Taylor S. account of a rocking stone, 201 



, localities of minerals, 253 



Tertiary Formations of America, Essay on, 31 



Titanium metallic, 192 



Topaz Brazilian, remarks on, 364 



Torrey, Dr. J. Flora of N. and Middle States, 178 



Tourmaline, 55 



