INDEX, 407 



J. 



Jones, G. on use of anthracite in blacksmiths' shops, 303 



L. 



Lackawanna valley, anthracite of, 308 Lepidolite of Paris, (Me.) 296 

 Lichen rocella, coloring matter of, 151 



Light, apparatus for its instantaneous production, 148 Light, on deflection of, 176 

 Lightning rods, mode of adjusting, 361 Lignite, carbonization of, 871 

 Localities of minerals, 78 Long, Lieut, description of a frame bridge by, 123 

 Lyceum of Nat. History of New York, 193 



Mac Culloch, Dr. J. on remittent diseases, 838 

 Magnetic influence of the solar beam, 181 



violet rays, 171 Magnetic needle, variation of, 380 



Magnetism, effects of in chemical combinations, 385 



Mansfield, Col. obituary of, 208 Marine ventilator, a new one, 75 



Mather, Lieut, on the crystalline form of iodine, 84 



localities of minerals by, 360 



on the crystalline form of Xanthite, 359 



Meade, Dr. William, on anthracite in making bricks, 118 



■ , on mica for spectacle glasses, 874 



Medals, Thomson's scientific ones, 198 Mercury, sesqui-sulphate of, 364 



Metallic decompositions, 403 Meteorite of Georgia, 388 



Meteorite of Tennessee, 378, 200 Meteorological remarks, 367 



Meteorological tables, 366 Milk, preservation of, 152 



Mineral, analysis of a new one, 167 Mineralogical journey, 126 and 289 



Minerals in the Ural Mountains, 163 Minerals, localities of, 78 



not described in common works on mineralogy, 391 



Morton, Dr. S. G. on the ferruginous sand formation of N. J. 243 



Mulberry tree, culture of in the U. S. 278 



Muse, Dr. J. on animalcules in snow, 56 Myology, elements of, 203 



N. 



Natural Sciences, Helvetic Society of, 170 New York, History of, 206 

 Nitrate of silver, reduction of, 400 Nitrogen, office of in the air, 52 

 North American Medical and Surgical Journal, 203 



Ohio, cannel coal in, 376 Oil in oleaginous plants, 150 



Olmsted, Prof, on hail storms, 1 Olmsted, Prof, on adjusting lightning rods, 362 

 Optical surgery, 179 Organic remains of ferruginous sand formation, 243 

 Osseous remains of Bigbone Lick, 139 Obituary, 208, 390 



P. 



Partridge, Wm. on indigo, 237 Paris minerals, 293 



Pascalis, Dr. on culture of silk in U. S. 278 Percussion powder, 156 



Peruvian geography and geognosy, 182 Phosphorescence of sea water, 166, 187 



Phosphorus, inflammation of, in vacuo, 147, 177 Piperin, preparation of, 352 



Phosphuretted hydrogen, eflect of in metallic decompositions, 403 



Platiua, analysis of, 162 Flatina, spongy, 398 



researches respecting, 151 in the Uralian mountains, 190 



Plumbago, instead of oil in watches, 179 



of Sturbridge, (Mass.) 377 Poisonous confectionary, 157 



Pollen, analysis of, 402 Porcelain clay, 199, 384 



Porter, J. on American Antiquarian Society, 136 Potatoe cheese, 385 



Premiums for useful invcniions in agriculture, 382 



Providence Franklin Society, 195 Prussian blue, 332 Public monuments, 229 



R. 



Rectification of the ellipse, 38 Reliquiae diluvianae, 393 



Rensselaer School flotilla, 200 



