282 



ITTDEX. 



Perchlorate of oxide of methule, Mr 

 Hare on, 202, 205. 



Phosphorescence, Henry on, 46. 



Photogenic drawings, Mr. Carey Lea on, 

 56. 



Photography, Dr. Goddard on, 144. 



Plants, new, Nuttall on, 119. 



Platinum, Dr. Hare on, 202, 205. 



Porter, Hon. J. M., thanks to, 268. 



Powers, Mr. P., on expansion of func- 

 tion, &c, 40, 74 — integration of ir- 

 rational functions, 218. 



Proceedings, price fixed of copies, 4. 



Quetelet, M., on simultaneous observa- 

 tions of natural phenomena, 235 — 

 letter from, 266. 



Quebec, Literary and Historical Soci- 

 ety of, a correspondent, 243. 



Rain gauge, self-registering, 164. 



Redfield on storms, 6, 10 — Dr. Hare on. 

 141, 225. 



Reid, Mr. J. C, on shooting stars, 267. 



Reports. See Committees. 



Rhodium, fusible, 182, 187. 



Rogers, Prof., on geology of Mass. &c, 

 3 — on earthquake, 258, 267 — on co- 

 met, 276. 



Rogers, Prof. William B., the geology 

 of the west of Ohio, &c, 120, 125, 

 137. 



Rumker, on new comet, 7 — observa- 

 tions on comet of 1840, 75 — on 



Encke's comet in 1838, 99 — other 

 astronomical observations, 103. 



Russia, Admiral Schiskow on public 

 instruction in, 88. 



Sabine, Major, on magnetic observa- 

 tions, 6, 144. 



Schiskow, Admiral, on public instruc- 

 tion in Russia, 88 — transmission of 

 work, 93. 



Siamese twins, Prof. Tucker on, 15, 22. 



Steam boiler thermometer, Dr. Patter- 

 son on, 40. 



Stevens, Dr. William B., use of library, 

 &c, 58. 



Storms, Prof. Bache on, 56 — Prof. Loo- 

 mis on, 182 — Redfield on, 6, 10 — 

 Dr. Hare on, 141, 147, 225— Espy 

 on, 128. 



Survey, Mass. See Borden. 



Tucker, Prof., on Siamese twins, 15, 22. 

 Transit instrument, Controllers to de- 

 posit, 38. 

 Tetracaulodon, Dr. Hays on, 105. 



Vaughan, John, Esq., resolutions upon 

 death of, 131, 133, 162. 



Walker on periodical meteors, 6, 18 — 



on comet of 1843, 272. 

 Walker and Kendall on Encke's comet, 



186— oncometof 1843, 267, 270, 275. 

 Washington, magnetic observatory at, 



180. 



