ad 
ne yay. 
458 
Shepherd, F., geysers of Jang ye xii, 153. 
Shooting stars, Aug., 1848 and 1849, xi, 133. 
of Au gust, 1850, xi, 130, 293. 
tearred for, in Nov., and Dec. 
1850, xi, 131. 
seen in ful] daylight June, 1850, xi, 
brilliant one, Sept. 1850, xi, 131. 
of Aug, 9, 10, 1852 , E. C. Herrick, 
xiv, 430. 
: in Aug., 1852, at Paris, C. Gravier, 
of August, 1852, xv, 136. 
ved August, gi xvi, 288, 431. 
erved at ouse, xv, 290. 
20 yeah 1855, xx, 280. 
— Exploring Expediti ion, of 1853-5, 
Sieboid and Stannius, Comparative Anato- 
, of, tran: “% ted by W. 1. Burnett, no- 
Gel xvii 
eh. on our wri of the of gereest and hori- 
E 
traction, xv, 413, x 
Silica and slumine, NT tied Ol. ka ae 
Hunt, xiii, 370, 371. 
Silicates, classification of, Chapman, xiv, 
Siliciication, a xvii, 119. 
ape m, xx, 1 
in Algeria xix, 108. 
coloring, through food of silk worms, 
gilding of, xvii, 418. 
Silkworm, n ew, renee into France, xix, 
zi, 
ghee "by galvanic peas xi, 
condition of Vesuvius, 
oe Cane and Li st Tiber Resahs xii, 
. lake near Tivoli, xii, 258. 
ogical oteecvelag of Vesuvius, 
Gillard’s light, xii, 26 
notes from corr: 
INDEX, VOLS. XI,-—xxX. 
aro fag on Electro-metallurgy, noticed, xiii, 
[smi J. L., comparison of microscopes, Xi, 
y,x 
remark os hn Pisbigite, Mh tod a 
thermal waters of Asia Minor, xii, 10, — 
on Inverted Microscope, xiv, 233. 
microme gee ag? measuring angles with 
microscope, x 
Ei re sai aL ainemalel in analysis, 
__itermining alkalies in minerals, xv, 
234, xvi, 53. 
analyeie 7 mmsgnees opal, xv, 435. 
Ay Amer- 
ican minerals, xv, 207, xvi, 4 
auateoatias of American elders xviii, 
dit, Xx oe 
Thalia, 
1, 95, 
roca ney a  borositanate, xvi, 293, re 
certain actions of nitric and oxa 
nei, xvi, 3 
a new meteorite from Tennessee, 
xvii, 131. 
widens of Owenite and Thuringite, 
13], . 
ap eG, xix, 153, 322, . 
and vanadate of lead in Pa, 4 
Smith, 8. ; Elements of Gane xi, 147. 
geod a nd Watson an hiatorieal lite- 
uriosities Ber pag? xii, 
saeitien ph a *Contnibutions, to 
Knowledge, noticed, xi, 303, 447, Seg “4 
Reports, noticed, xii, 303, xiii, es 
registry if periodical pheno omens, 
proposed by, xii 
Mebicleical instruments made 
by, xiii, 
letter of L. sect on, 
article on, xx, % 
— E.S., on a rainbow by light pe 
rom water, xviii, 18. 
en red, in Switzerland, Ehrenberg, 4 
limit of perpetual, of Himalays, xi, 244. 
ibid, of Alps, xix, 290. 
A het height of of, in different regions, 
Snow-water, analysis of, xiv, 263. 
New Jersey works, xiii, 4 Soap, observations on, xiv, 31. : 
Principles of Chemistry by, noticed, xv, fhoaiiien: see Ameri Philosophical of 
Philadelphia ; Boston, of Natural History; 
Copper Mines of Bristol, Ct., xx, 361. ‘avendish; Cornwall Polytechmes 7. 
— introductory chapter of Murchison’s,|| logical, of France ; Geological, of for 
i, 394. Faleontologic ; yi Z 
: evee of, J. D. Whitney, xix, 371. the Acclimution of Ant 
Silurian System of Bohe: emia, Barrande, xiii, Sodium, manufacture et x, 258. dis 
117. ae mposition o gg ‘rs extracted 
Lake Superior Region, xv ii, fertile, by water, xvi, 273. 
gio of Scioto Valley, D. A. Wells, xiv, 1+ 
Silver used by _penige Indians, Solar eclipse, see Sun 
minating power gi sponee oe aes 260. | Soleil’s Eseen , Xv, 175. 
Sinsteden, on magn cula lescopes, XV1, ™"- 100, 
264. ote slation, shoughts on, T. S. ‘eae 
wers, : ysical phy, xvi, 
Small S oanree Hitchcock, siy, 73. ‘Sound, velocities of, in different substance, 
e. 
xvi, 77, xvii, 287, xx, 139. 
xv, 
relations of architecture to, XV, 215. 
