INDEX. 



405 



Motion of a system of bodies, by Prof. 

 Strong, 44. 



N. 



Navigation of Cape Horn, 54. 

 Naiades, sexual characters of, 117. 



O. 



Obituary of Gen. Martin Field, 204. 



Rev. Lewis D. De Schwein- 



itz, 218. 



Olmsted, Prof. D. on Meteors of Nov. 13, 

 1853, 132. 



Osmium, method of obtaining, from plati- 

 num residue, 371. 



Ozokerite, 388. 



P. 



Page, C. G. on new electrical instru- 

 ment, 110. 



Paper, materials for, 193. 

 Parasite tree, 106. 



Parkinson & Frodsham, sea and land rates 

 of their chronometers, 121. 



Parrot, M. on temperature of the earth, 

 10. 



Pelokonite, 386. 



Penn , internal improvements of, 108. 



Physical discovery to correct the magnet- 

 ic needle, 90. 



Platinum in France, 389. 



— , method of obtaining osmium 

 and iridium from residue of, 371. 

 — , price of, 210. 



Plumbacalcite, 386. 



Porcelain and earthenware, 233. 



Prairies of Alabama, 93. 



Pyrargillite, 387. 



R. 



Razors, action of heat upon, 189. 

 Rock blasting by gal v. ignition, 3^ 



Raz 



Koc- MJ 



Rogers, Prof. W. B on analysis of shells, 



361. 



— — * w 



Rotating armatures, 205. 



S. 



Sarracenia, 316. , 



Schley, Geo. on steam as a conductor of 

 electricity, 206. 



Schweinitz, Rev. Lewis D. De, obituary 

 of, 218. 



Scientific publications, recent, in the U. 



S., 208, 397. 

 Septa ria very large, 217. 

 Shells, analysis of, 361. 



, some new ones on the coast of 



New England, 366. 

 Sbepard, C. U , school of Nat History, 



215. 

 Skins, method of preserving, 188. 

 Solar system, elements of the, 229. 

 Sparks in the freezing of water by ether, 



179. 



Spring birds, on the time of their appear- 

 ance at Williamstown, in Massachu- 

 setts, in 1831, 32, 33, 208. 



Steam as a conductor of electricity, 206. 



Stereotype metallographic printing, 192. 



Strong, Prof. T., on the motion of a sys- 

 tem of bodies, 44. 



, parallelogram of forces, 304. 



Sulphuric acid, its manufacture, 207. 



T. 



Tapir, fossil jaws of the, 218. 

 Tempetature of the earth, 10. 

 Tenantite, analysis of, 386. 

 Test-paper of purple cabbage, 210. 

 Thermo-electricity, Prof. Emmet, on, 311. 

 Thomas, M. D. on chrysomela vitivora and 

 corydalis formosa and canadensis, 112, 



114. 



Tinned lead pipes, 210, 400. 



Tolefree, Robert, Jr. on the voice and its 



modifications, 76. 

 Totten, Jos. S., on some new shells of 



the New England coast, 366. 

 Twining, Alex. C, on the meteors of Nov. 



13th, 1833, 320. 



V. 



Vanadiate of lead, 386. 

 Vegetables, circulation in, 99. 

 Voltaic Induction, 23. 

 Voice and its modifications, 76. 



Waters deep, color of 9 65. 

 Wolchoushoit, 387. 

 Worthite, 387. 



I 



X. 



Xanthite, 383. 



