404 INDEX. 



p 



Peruvian bark, experiments upon, 28 



Pettengill's stellarota, 363 



Phillips, Wm. cabinet of, 379 



Phosphoric acid, precipitation of albumen by, 396 



Pigeons, mode of decoying, 373 



Pigment for the pallet, 174 



Platina, large masses of, 389 



Pluranium, a new metal, 384 



Polar expeditions, history of, 124 



Potash, detected by nickel, 387 



Proto-sulphuret of iron in Virginia aerolite, 207 



Psora, use ot chloride of lime in, 395 



Pump by steam, 181 



Q 

 Quantity of matter, effect of on affinity, 234 



K 

 Renwick, Prof, translation from the Astronomical Journal of Hamburgh, 225 

 Repeating theodohte, 252 Report upon Audubon's ornithology, 363 

 Resuscitation from drowning, 250 

 Revere, J. Dr. on sheathing for ships, 180 



Review of Sketches of Naval Life, 320 Rock formations in America, 254 



Rodriguez, P. J. on the observations of comets, 94 

 Rotative Piston, 313 Ruthenium, a new metal, 384 



S 

 Saratoga powders, 369 



iodine in the mineral waters of, 242 



Shepard, Charles U. Mr. analysis of meteoric iron, 217 



discovery of columbite in Massachusetts by, 220 



examination of Virginia aerolite, 191 



— soda alum, 203 



Ships, fastenings and sheathings for, 180 



Shooting stars, 20 Silica and potash, new compounds of, 397 



Sillimauite, zircon in, 207 Smith, Dr. obituary of, 211 



Soda alum of Milo, 203 Sound, swiftness of, 390 



Specific gravity, as used in mineralogy, 260 Spider, gossamer, 399 



Stanniferous columbite in Massachusetts, 220 Steam pump, 181 



Steel, J. H. Dr. on the Saratoga waters, 242 



on the High Rock Spring, 341 



Strong, Theodore, Prof, solution of a problem in fluxions by, 283 

 Sulphuric acid, action of on alcohol, 267 

 Swainson's new zoological illustrations, 378 



T 

 Telescopes, 301 Theodolite, Hassler's repeating, 252 



Tin in Massachusetts, 188 Travels, new book of, 168 



Trumbull, Col. on the national pictures, 163 



U 

 United States, plan for the survey of its coast, 225, 



V 

 Vanuxem, L. Prof, on American rock formations, 254 

 Variation of the magnetic needle, 60 Vegetable chemistry, 376 



Virginia aerolite, examination of, 191 



W 

 Water, maximum density of, 265 Wilder's algebraic solution, 271 



Wollaston, Dr. obituary of, 216 



scale of chemical equivalents, 371 



Wright, on the theory of fluxions, 53 



Zach, Baron de, 209 Zinc containing iodine, 389 



