PRU 
Prize given by the Royal Society to 
J. F. W. Herschel, for a paper 
on double stars, xxv, 412. 
respecting the ammoniacal 
azoturet of potassium, offered by 
the St. Petersburg Academy, 
xxv, 205. 
, the Montyon, presented, xxv, 
189. 
——, the De Lalande, given to 
E. Sabine, xii, 194. 
; , xxv, 190. 
of the Academy of Sciences, 
xiv, 880, 389; xxii, 194. 
Problems, diophantine, xxxi, 156. 
, dynamical, new solutions of, 
xxxvill, 106. 
Producta, see Zootocy, Mollusca. 
Profile mountain, New Hampshire, 
M. Field, xiv, 64!; xxxiv, 122. 
Pronouns, nature of, explained, 
XXXiv, 337. 
Proportions, definite, in Chemistry, 
D. Olmsted, xii, 1. 
Prospect Hill, East Haven, Ct., 
scenery of, vil, 3. 
Proteus of the North American 
Lakes, S. L. Mitchill, iv, 181; 
vii, 68.f 
, D. H. Barnes, xi, 285. 
Protococcus kermesinus, analogous 
to red particles in blood, xxxvi, 
206. 
Prout, W., analysis of starch sugar, 
KOK COO. 
Providence Franklin Society, xviii, 
195. 
— tornado, R. Hare, xliii, 137. 
, W. C. Redfield, xliii, 
203.f 
Prunnerite, new mineral species, 
exe, LOE 
Prussia, population of, ix, 184. 
, Universities of, xx, 388. 
Prussian travellers, vii, 195. 
Prussiate of potash, red, deoxida- 
tion of, C.F. Schénbein, xlix, 203. 
» manufacture of, at 
Glasgow, T. Thomson, xli, 49. 
Prussian blue, new mode of prepa- 
ring, vill, 380. 
209 
PSE 
Prussian blue, researches into the 
manufacture of, xv, 178. 
, formation and nature 
of, xvili, 332. 
,» manufacture of, 
Glasgow, xli, 50. 
Prussic acid, F'. Magendie on, ii, 
81. 
at 
——, memoir on, B. L. Oli- 
ver, ili, 182. 
? P) 
157. 
Orfila, xviii, 
, effect of muriatic and 
sulphuric acids on, xviii, 146. 
, extraordinary produc- 
tion of, A. A. Hayes, xviii, 
201. 
—— ——, preservation of, xvi, 
260. 
, apparatus for the evo- 
lution of, R. Hare, xxix, 244.f 
, impurities of, xix, 70. 
, cases in which admin- 
istered, 11, 187. 
, efficacy in asthma, vi, 
366. 
, action of, on a horse, 
xil, 385. 
, effects on vegetation, 
x, 190. 
, chlorine an antidote 
for; xvil, 174; xxi, 157. 
Pseudomorphine, a new vegetable 
extract, xxx, 179. 
‘Pseudomorphism, observations on, 
J. D. Dana, xlviii, 81, 397. 
Pseudomorphous minerals, account 
of, in a review of J. R. Blum’s 
treatise, xlvill, 66. 
(crystallized) steatite, in Mas- 
sachusetts, C. Dewey, iv, 274; 
v, 249; vi, 3335 vill, 51. 
steatite, having the form of 
quartz, scapolite and spinel, xxi, 
320. 
steatitic hornblende, analysis 
of, L. C. Beck, xlvi, 35. 
quartz, at Southampton lead 
mine, vi, 214; ix, 249. 
, in Pennsylvania, x, 
223. 
