503 



Peale on Morlot's Resume and a Stone Saw, 



on Stone Implements, .... 



on the Eifects of Lightning, 

 on Geastrum Hygrometricum, . 

 on the Archaeological Cabinet of the A. P. S., 

 on Soundings in the Delaware Water Gap, 

 on Ancient Pottery in Illinois, 

 Powel on Asclepias Fibre, .... 



on Franklinite, .... 



Prettyman's communication, 



Price on the Right to Tax the Society, 



on Jury Trial, ..... 



on the Family Element in Government, 

 Reichenbach on Solar Spots, 

 Smith B., on Grave Creek Mound, . 

 Smith R. P., on County Maps, . 

 Smith R. S., on Lignite in Dutch Gap Canal, 

 Supreme Court Decision on Taxing the A. P. 

 Tafel on English Orthography, 

 Tilghman on Cannon Powder, . 

 " Torricelli" Magellanic Premium, 

 Trego on Sorghum Culture, 

 Wetherill on Ether Deterioration, 

 Wheatley on Phcenixville Fossils, 

 Whitney on the California Survey, 

 Wilcocks on the Solar System, . 

 Wood on the Effects of Lightning, 

 on Harrison's Boiler, 

 on the Growth of Olives in Spain, 

 on the AVaterworks of Madrid, 

 Zantedeschi on Photography, &c., 

 on Dew and Hoar-frost, . 

 VERBAL COMMUNICATIONS. 

 BIBLIOGRAPHY. Index of Royal Society's L 

 Catalogue of Dr. Le Conte's Deposit of hooks, . 

 Codex Sinaiticus Petropolitanus, 



MATHEMATICS. Problem of Linguistic Resemblances, 

 On Prime Right-angled Triangles and V2, 



ASTRONOMY. On the Nebular Hypothesis, 

 On the Solar System, ..... 



On Solar Spots, ...... 



METEOROLOGY. On the Storm of September 

 On the Aurora of July 23, 1862, 

 On the Effects of Lightning, .... 



On the Vortical Gales of January, 18G4, 



On Star-shower Charts, ..... 



On the Diurnal Variation, . . 283, 291, 345, 355, 367, 395, 405, 41 



GEOGRAPHY. On County Maps of the United States, 

 PHYSICS. On Engle's Model of Declination Curves, 

 On Cornelius's Electrophoros, ...... 



brary. 



12, 1862, 



26, 224, 401 



. 110 



. 275 



. 364 



. 451 



. 460 



. 88 



7 



. 38 



. 14 



. 209 



. 295 



. 234 



342, 344 



. 350 



4 



. 14 



25, 39, 59 



11, 12, 13, 119 



425, 461 



. 119 



. 171 



4 



. 182 



. 384 



63, 109 



127, 228 



. 288 



. 280 



. 372 



. 456 



. 329 



. 377 



. 404 



. 259 



. 415 



. 442 



. 384 



. 234 



. 59 



. 60 



;, 109, 110 



. 360 

 . 440 



;, 425, 427 

 350, 403 



277 



