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” 
PELE: 
406 3 {NDEX, 
Natural History, exchange of the objects of, 400 ane 
*¢ Naturalist’s Guide” by Wm. Swainson, 183 vies 
Nitric acid with sulpburetted hydrogen 
Northrop, B. F. discovers a fluid in roransed, 283 
Observations on the Comet of 1825—24, 315 
= Prof. on illuminating gas from Cotton Seed, 294 
—on os excessive use of Sulphur, 394° 
Opi lish, 
One R Mera of the Canadas, 66 
Palms, | Chevalier de Martius on the, 383 ] 
’ Essays, notice of, 190 a ; 
en, J.H. his new Air-Pump, 14 O75 
Percival, Dr. J. G. on the Geology ae mincealapy of Sicily, 202 
ou = Zoological characters of Formations. 
213 
anada,69 - 
Water Works, 1 93 
ciate y of Natural Sciences, 399 
ang and Coaytenre: their geological arrangement, 
e, Col. Trumbull’s of the Declaration of ndependence, 168 
Pier si iz. ag to the White Mountains, 17 
Pimelite, 
Plants of Reads Penn. 267 ‘ 
Platinum, Dana, on the Ignition of, 198 
Polishing of Granite, ra 
a 
Population of Paris, 3 
Potash pi Seclags of the sub-carbonate of, I8t 0 
go preparation of, 372 
Pwd of Balda, 2 
] 
} 
Pots es ob, Toeatites < Minerals, 233 
Po 
Precession of the Bcoier 132,139 es 4 
Quinby on Crank Motion, reply to, 279 ” & 
Reliquiae Diluvianae, Review of, 150, 317 
Remarks on Prof. Wallace’s new Algebraic Series 31. 
on the paper on the Precession of the KES, 13e 
a Ss ic Prof. Fisher’s paper on the Maxima and Minima of 
Functions, 133 i 
Renwick, Prof. description fa new Mi eval, 1 rs aM 
Review of Prof. peg = Reliqaine —_ Rane 1 50, si7 f ane 7 
; Revael ee 8 
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