Zool 
elon: New York, 
Murchison, R. L, on Tuscany, 199. 
N. 
Naphthionic acid, 111. 
Nemalite 
_ eel C. Girard o 
New aia iodan Se es E. G. Squier, 
mining, unce, 4, 
d, 112. 
Nittprisrids, 1 
of soda,a oe t for Sulphur, Bailey, 351. 
Notornis, discovery of a living, 102. 
Nallipor res, 362. 
0. 
a Obituary of Audubon, 295 
7 4 4 oe mbel, 143. 
i. W. B. Gost, 443. 
Dr. Linck 
cit 444, 
Wm 
Schieeich 295. 
Observatory of Altona, D. Petersen appoint-| 
ed to, 442. 
Enanthic acid, 2 
Olmsied. Snide 181, 
Organie nthat hy ‘eets of, 256. 
Orthite, 228. 
Owen, on fossil serpents and the serpent of 
the Bible , 281. 
Oxalate of iron, 231. 
a; 
P age,C.G., strength of — — 2,6. 
— required to rais galvanic cur- 
rentt its maximum, wes . aah an in 
lectrome figures with joeneerg light, 89. 
sparks of se pet curren 
galvanic cu nln, "conduction 
and distri baton gr 192 
on ma ic telegraphs, 287 
on pian churns, 296. 
for insolation, 2 299. 
nue 258. 
emain 
ohaege = lane , Te 
d its cil cts, Brande, 4 
eles 3 de gros cal surv eye rol 442, 
"Perley, boulders e, 425. 
INDEX. 
E. G. Squier, Photog: 
Mo’ aster ns,Himalaya, limitof ae snow Pictorial atlas of fossi 
Piahigie C. Gira rd o 
455 
, S. G., value of word species in Phonon allotropic suntoe.* of, eg 
Iodine, compounds of, 25 
es, ae i. 
remain 
enic glasse 
y. GA. 
ll, notice 
Piria, action of sulphate ate of ammonia, 111, 
Pitehsto 
ne porphyry, analysis of, C. T’. Jack- 
a 41. 
Sones S17, 
f, 394. 
Plants, in lasoon of Tele “te yi “on chem- 
cal changes in 
l gen " on the pip gt ids, 113. 
isone, of bromine in examining for, 
ba 
BES 5 
S 
Pol arization, colored figures of objects with, 
Polycra atony = 
Pol vesignis, 2 
Polythalamia in w Florida, 
ray. W., fishes of the Winn siiesaime. 
Principe of of zoology by Agassiz and Gould 
otic 
gene Hb aca &c., on engraving bi 
Problem b ypu Deva Shastri 
Prout, H. A., ah ae i oH 
Purifeation of ame 291, 
Purpurin, 
Pyrochlore, 229, - 
Quartz crystals, large, New Hampshire 
Quetelet, shooting star 7 August, 1850, a. 
Quicksilver beds of Spa' n, 266. 
R. 
Radicals, or, nic, theory of, 256. 
Rai. iney’s im a pie Abacus, ‘noticed, 448. 
Red antimony, 28 
Red Sea d’ Mediteranean, relative level 
ol, 
Reefs of coral, J. D. Dana, 357. 
esta prasserhs of bailding stones, 8 
Ri mployment of h ydrogen in in analysis, 
Rocks of coral reefs, 363. 
ack: Spain 
Rondelet strength of ee stones, 10. 
aes presse ation fi xydation of pro- 
ulphate of iron, 
gle, 38. 
- 
ot 
ee i 
ecg 
" 
