404 INDEX. 



Plane surfaces, not separable by blowing, 395 



Pluviometrical observations, 29 



Polar fogs, 379 



Porcelain, American, 198 



Premiums awarded by the French academy, 380 



Prizes of the academy of sciences, 389 



Profile mountain of New Hampshire, 64 



Q 



Quartz, gelatinous, 391 

 Quinine, sulphate of, 399 



R 

 Ramond, on the vegetation of the Pyrenees, 377 

 Rensselaer, J. Van, on the fossil tooth of an elephant, 31 

 Revere, J. on the crude, sodas, 41 

 Review of Prof. Daubeny's work on volcanos, concluded from 



Vol. XIII, p. 310, 70 

 Rewards of science, 389 

 Rhubarb, different varieties of, 33 

 Rhubarbarine, cathartic effects of, 33 

 Rochefoucauld, le Duke de la, 392 

 Rural economy, 390 



S 

 Sapphire in the emery of Naxos, 205 

 Shells found near Marietta, 276 

 Shepard, C. U. on native iron, 1 83 

 Silex, solubility of, 385 



Silliman, B. D. notice of an aurora borealis, by, 91 

 Soapstone, its uses, 476 

 Soda and Lime, chlorides of, 251 

 Southern review, 199 

 Springs, freshwater, on their cause, 174 

 Steatite, notice of, 376 

 Steam engine, by Lieut. Long, 169 

 Sulphate of Quinine, 390 



T 

 Tappan, B. on the boulders of primitive rocks, 291 

 Tourmalines, analysis of, 384 

 ■ of Chesterfield, for sale, 400 



V 

 Vanuxem, Prof, on the pressure of water at great depths, 194 

 Vision, on a peculiarity in, 264 



W 

 Water Spout, 171 



Water, pressure of, at great depths, 194 

 Welland canal, 159 



West Chester, geology and mineralogy of, 15 

 Wright, E. a theory of fluxions by, 330 



