INDEX. 



335 



Peltier, M., his description of a tornado 



animadverted on by Dr. Hare, 122. 

 Penn, Wm., original document of, 181. 



fac simile of original grants and 



deeds to, 261. 



Percival, Dr. Robert, death of, announ- 

 ced, 117. 



Photographic representations of plants 

 and shells, 171, 177. 



Physick, Dr., necrological notice of, 13. 



Pisa, scientific meeting at, Oct. 1839, 108. 



Plants, new genera and species of, by 

 Mr. Nuttall, 282, 284. 



Platinum, chloride of, nitric oxide and 

 hydrochloric acid, new compound of, 

 145. 



fused, mass of, exhibited by Dr. 



Hare, 14. 



fused, large mass of, 42. 



new compound of, discovered, 94. 



pure, freed from iridium, exhibited 



by Dr. Hare, 14. 



Prisons, Reports of, printed by order of 

 the House of Commons, directed to be 

 purchased, 167. 



Pollok, Mr., death of, announced, 98. 



Potash and soda, change effected in, by 

 the limited application of heat, &c, 

 251,270. 



Potassium, improved process for obtain- 

 ing, by Dr. Hare, 65. 



in the globular form, specimen of, 



166. 



Pressures, accumulative and instanta- 

 neous, the distinction between, 191. 



Prinsep, Mr., of Calcutta, death of, an- 

 nounced, 267. 



Proceedings of the Society, publication 

 of an abstract of the, recommended, 18. 



resolutions in regard to the distri- 

 bution of the, 69. 



rules regarding the distribution of 



the, 207. 



Publication committee report the pub- 

 lication of part 2, vol. 4, of the Trans- 

 actions, 192. 



report the completion of the 



6th vol. of the Transactions, 151. 



announce a new part of the 



Transactions, 267. 



report the publication of the 



first part of the 7th vol. of the Trans- 

 actions, 273. 



Raguet, Mr., announces the death of 

 Don Jose Bonifacio de Andrada e Sil- 

 va, 61. 



reads an obituary notice of Cheva- 

 lier Lorick, 61. 



Rain-gauge, Osier's, Mr. Walker on, 3. 

 Rask, Prof, of Copenhagen, obituary 



notice of, 104. 

 Respirator, Jeffreys, described by Dr. 



Mitchell, 4. 



Riddle, Lieut., on the magnetic declina- 

 tion, &c, at Toronto, on the February 

 magnetic term day, 293. 



Rock-blasting, by the aid of galvanic ig- 

 nition, 199. 



Rogers, Professors W. B. and Henry D., 

 contributions to the geology of the ter- 

 tiary formations of Virginia, 69, 80, 88. 



Prof. H. D., on the development 



of electricity under combustion, 324. 



on perchloric ether, 311. 



and Mr. Boye, discover a new com- 

 pound of platinum, 94, 145. 



Rumker, Mr,, astronomical observations 

 in reference to Galle's comets, 235, 

 247, 275. 



results of observations of Galle's 



first comet, and occultations observed 

 in April, May, June, and August, 

 1840, 301. 



Sabine, Major, on contemporaneous mag- 

 netic and meteorological observations, 

 169, 242. 



progress of magnetic observations, 



313. 



Saxton, Mr., electricity of a jet of steam, 

 321. 



exhibits copies of medals by gal- 

 vanism, 171, 181. 



invents a mode of using thin sheets 



of lead by the blind in writing, &c. 98. 



Sea, depth of the, determination of the, 

 by the echo, 39. 



Seybert, Mr. H., presents a specimen of 

 the Daguerreotype, 166. 



Shell, new, Melania Cincinhatiensis, de- 

 scribed by Mr. Lea, 66. 



Shells, fresh water and land, Mr. Lea 

 on, 2, 3, 282, 285. 



Shooting stars. See meteors. 



Silicon, new mode of procuring, 175. 



Silk culture in India, 214. 



Sioux, language of the, 289. 



Smith, Mr. H. L., and Mr. E. P. Mason, 

 observations on nebulae, with a four- 

 teen feet reflector, 199 — reported on, 

 206. 



Smithsonian legacy, proposed National 

 Museum connected with the, 111. 



Societies, list of, to receive the proceed- 

 ings, 218, 234. 



Society, American Philosophical, history 

 of the, 233, 234. 



Geographical of Paris, announces 



the intention of forming a Museum, 

 and solicits contributions, 138. 



Pathological, formation of, announ- 

 ced, 139. 



Royal, letter from the secretary of 



the, in relation to magnetic observa- 

 tions, 111. 



Royal, circular relating to the 



Term observations, 169. 



