¢ 
» Paris, (Dr. John ent on sandstone, 234. 
Zz Fr ¥ in ie 
* ry we 
Index. 447 
Perit, (Mr. Pelatiah) 85. 
Perkins, (Dr. Benjamin) 37. 
———— 49. 
a ain tator, 154. 
Picture of Independence, 20 
Pierce, (James, Esq.) 0 n magnesia, 54, 142—on Staten Island, 148, 
Aageet of Cherokee country, 2 
Plumbago, 239. 
Pole, north, attempts to discover the, 101. 
omeroy, 1, ) his certificate, 87. 
Porcelain and porcelain clays, 57. 
orter, (Dr. J.) on a = ga at ‘Plainfield, 254, 
Potato, Prof. Ives on, 2 
Po ett fulminating, 16 
Prairies and barrens of rie west, 116, 331. 
Prehnite, 50, 135. 
Pyrites, magnetical, 49. 
Pyroxene, red, 244. ‘ 
Q. 
Quartz, 53, 237, 238, 241, 340, 345. 
R. 
y (solar) connexion with magnet 
Ratanague (C. 8., Esq.) on Tereeenens | mustela vulpina, 88—on 
per-head, 84—on sponges, 149—on Xanthium maculatum, 151—Exogos 
sum, 155—on Diplocea barbata, 253—on discoveries in the West, 311—o 
genus Floerkea, 373—on oct, &e., 377—on Myosurus shortii, $19_—ut- 
Rain, red, tat 
Refraction, (polar) effects on magnetism;-90-—~ 
Respira ation of oxyg' 5 95. 
R os Mineralogy, 35. 
Reynolds (Dr » on m a 266. 
ae (Blue) is geo ogy, 2 
% ae n Java, i a cave, 320. 
Rock pai 
Roc ? prone Ek of East Tennessee, 61—Of Indiana, 131—Secondary, 215. 
Poatbillia, 355. 
we 
s. 
a old red, 212—of the Capitol, Washington, 215,—of Cornwall, 
En 
Fiat Soe effect 3 on a 389—391—on animals, 394. 
Salts of Sacoaber 
pub Mr. Tho — on Herpe etology, 256—on meg &e., 381. 
Schaeffer, (Rev. F. C.) = a 139—localities, 236, 
eldon (Wm.) on tanning, &c., 
Silver, mints ee fom 169. 
Sines and Cosines, formu [24. 
Slate, ar, gillaceous, 62, 67, 7 
Smith (Professor E. D. ) on  aheviel &c., 93. 
