456 
Sandstone, reptile remains and fossil ova in 
278. 
“oa red, 2 
ng Di 
kine at white objects, 
armont, optical properties of isomorphous 
ah) eneiat 
Shells of sa England, work on, by W. 
timpson, noticed, 150. 
es ~ asa CU. 2 Sone of North Carolina, 
magnetite and Jenkinsite, 392, 
Silica ad alumina, isomorphism of, 7’. S. 
Silliman, B., Jr., an excursion on Et tna, 178. 
zinc coxyd as a pigment and notice of 
ersey works, 430, 
Silurian System of Bohemia, Barrande, 1 
Ss oe y; on Etec beings, 
Smithson Institution, meteorological in- 
struments made by, 288. 
oa: 0 ifth Report on, no- 
snow, Peg in Switzerland, Ehrenberg on, 
Spencer, new object-glass made by, .A. S. 
Johnson, 31, 
le nests che: on his improvements in micro- 
scopic object-glasses, 290. 
Spermatology, relatos to doctrine of vital 
force, W. rnett, 281. 
Stalacties on organic matter in, D. A. Wells, 
pg JE. Fedo feign ie 
m, by on ‘Aan of New 
See Jand, a, noticed, roa 
pack 
v iectiblae pivekees in 
Sulotig nitrogen, Fordos ind 6 Gélis, 114. 
St, ota investigations connected with 
extraordinary spots on, 442. 
fw 
Be G., The Indications of the Creator, 
Taylor, R. c: obituary of, 144, 
list of Rinolrs of 1a. 
Telographi ates communications, a nas on, 
Telerpeton Elginense, 278, 
Telluret of Ethyl, Mallet, 113, 
‘Temperature, influence of extreme cold on 
trees, I “s 
cold of January Lice in Alaba 
a ence of, bet en earth ¢ end ely tan 
bove it, Rozet, 4 
Teseheaashee d. ‘f. ic of eumanite, 117. 
n stigmaria, 2 265. 
alium, a new earth, D. D. Owen, 420. 
Thompson, Wm., obituary notice of, 443, 
Thompson, Z., Meteorological observyations| 
the accidental colors from 
4 
INDEX. 
Tracy, C. M., Halos and Parhelia, 433. 
Trees, freezing of sap in 
arge, in Western ‘New York, S. B. 
Buckley 
riftix A of, in cold weather, 201. 
Tungsten, age of, “Wahler, 113. 
and e of soda, preparation of, 
Wri rig 
Tyrol, caves in, 267. 
a 
Uranus, perturbations of 300. 
Urine, phosphoric acid in, 224. 
V. 
—— by the parlor fire, W. Hosking, 
bber 
Vermont, metorlaiel ago gag at Bur- 
. Thompson, 
Vesuvius, pied on is my 131. 
Vital ee W.T. Burnett o = 281. 
Volcano, pomcrine s, n seen eruption of, 131. 
na Loa, eription of, in 1851, 299, 
395. 
W. 
on white precipitate, 1 
Walferdn on the anda 269. 
uts on a Lake, 270, 
wae S. on Ventilatio 
ve D. a. on the Scheie of manga- 
e, 9. 
oe 
3 
n organic — in stalactites, 11. 
a the origin ratification, 13. 
Wertheim, new variet xi of pe taper 260. 
on double refraction fro m compression 
of lisa crystals, 411. 
Whewe .. Lecture by, on the Great Ex- 
hibitio n, 352. 
be con prvcpinte: Wagner, 113. 
Wohler, on the choaplaret of tungsten, 113. 
Woodbury. p. P, on the Pendulum Experi- 
men 
foe nt aie “ P., Manual of Mollusca by, 
noticed, 449 
Wright, preparation of tungsten and tungs- 
tate of soda, 112, 
Z. 
Zinc oxyd, a furnace product in New Jersey, 
417. 
a pigment, and hotice of New 
sinc aan Ba 
Z “tee ie, p hetichery in pt, 
b he Fo reparations, on making, H. Goad- 
ry, 1 
notes the genus a goer Infu- 
soria the larval mae of Entozoa, and on 
Cume, L. phat 
Crustacea, J. ”D. Dana, 1 
two new insects, J. oe 
Le, 121, 123, 124. 
land 336. 
tilian remains, G. A Mantel, 
e at Burlington, Varmots, 350. 
Zosiogy of British Seas, zones of species in 
depth, Forbes, 124, 
fir 
