INDEX. 
Nicklés, J. eathenpohabtibe of, 266; obitu-} 
ary 360" prea hn of the air of Paris, 
268 ; diffusion o germs, researches eae a 
spontaneous generation 8 ae 
synthesis, 48g ; mite per Pra O73. 
serimetre, 273; pseu morphism baa 
ae morphosis, m8: inundations, 
75; bibliography, 1 
Nitrogen, etd proetss fi fore mg! ae 
and acidimetric process, 
Wobars. test plate and ae St Saous, 
Sullivant and Wormley, 12. 
0. 
Obituary, 151, 266, 303, 461. 
cean, motion s of, 
Ontical p phantioaeis of “Silver Spring” in 
la, 
ve wae studies, Dove's, O. NV. Rood, 109. 
, vu. M., review “of Wetherill on the 
ween process for manufactu vine- 
gar, 
Orthoscopi ic so pag Tolles, 112. 
one resolution from or re, 64. 
n, David Dale, obituary of, 153. 
Paleontology, contributions of James 
469 
PHYSI 
Mingling colors gees by absorption 
r interference 
Motions of fiuids niet solids noe to 
the earth’s surface, W. Ferr 
yee 8 test plate yt strize of / a 
jullivant and T. G. Wormley, 12, 
Optical phenomena of “Silver Sprin ” 
Marion Co., Florida, J. LeC 
Philosophical. apparatus, Ritchie’s ilins- 
trated catalogue, 
ae of physics, 2d ed. ,B. Silliman, 
Quasi-v vision of moving blood-eorpuscles 
in the retina of the human eye, L. Reu- 
Regel lation, W. Gibbs, 414. 
Recherches sur | eatinient méchanique 
de la chaleur, G. A. Hirn, 155. 
Stereoscope eppuled to distinguish cop- 
ies from facsimiles, 0. WV. Hood, 110. 
Subjective optical phenomena, "0. N. 
Tolles’ "orthoscopic eye-piece, 112. 
Vision through colored media, S. New- 
com 
Wenham’s ‘improved binocular micro- 
scope, 110. 
Picramic acid, formation of, MM. C. Lea, 
primeval faun 
Paris, insalubrity of the air of, 268. 
Payer, Jean Baptiste, notice of, 267, 462. 
Philadetphia Acad. Nat. Sci. Proceedings 
Ha Hi, bee 
a, &¢., James Hall, 220, 
Phill ‘ohn, life on the earth, its o 
and (eso review, A. Gray ae | 
Puysics.— 
Aurora viewed as an electric discharge, 
B. V. Marsh, 311. 
Binocular vision influence upon estima- 
tion of distance, 0. V. Rood, 109. 
Chemical physics, 149. 
Color of blood-globules, 417. 
Declination of magnetic needle influ- 
enced by the moon, discussion of ob- 
servations at Girard College, 1840- 
Declinome ter observations at Girard 
College, 1840 to 1845, in 
sol re ailiceal raviath nual 
inequality, A. D. Bache, 
Lag 0. 
. Rood, 1 
Dove’s theory - lustre, 0. 1 "Rood, 339, 
" Electric _ t, O. N. Rood, 1 
Ful a or lightnin 
Paes e 
— of a jet of coal gas, C. Sond- 
ay in spectrum oe hyponitric 
Gibbs, 415. 
es, 302. 
uence of musical coors on_ the} 
\Picrie acid a test for c posh, M. C. Lea, 75. 
|| Pictet -, quaternian period, relation to 
| Pp t epoc 
[rospuon acid in igneous rocks, James 
Schiel, 353. 
: Planets, new, 463. 
‘Platinum metals, researches on, W. Gibbs, 
Potsdam formation, tracks in, 17. 
iy oe fauna and Point Levi fossils, 
Primordial fauna and taconic system, J. 
Barrande, 212. 
||Problems from 
orthographic projections 
pe descriptive geometry, S. £. 
arren, 
Decredings of Societies, 156, 308, 445. 
Pseudomorphism and pseudomorphosis, 
2738. 
Q. 
Quaternian period in ee to the pres- 
ent epoch, F J. Pictet. 
R. 
feorsneensid Ae C. F., Handbuch der Mine- 
Ravenel 2 . int fungi Caroliniani exsicea- 
i 
Light, 1 Toss of, by glass shades, 288. _|| Reuben, L., -corpuscles seen moving 
a of vision with the microscope, see|| in the retina, 325. : 
ts - ed catalogue of philo- 
Meteorites, in G county,|| sophical apparatus 
Fn vn Smith, 81. er, F. A Hy die il silu urische fauna des west- 
mer cal j 1 kept at Marietta,|| lichen 
rm hio, og 1 a by Pi 252. Aad B, cathe eof f elongated fo form and 
, Stereographs b, of pebblesin New- 
hand, 0. 
wi 
