EUC 
Etna, luminous flames at, xxxi, 169. 
, geological structure of, F. 
Ferrara, viii, 201. 
Ether in space, idea of, when in-| 
troduced, xxxiil, 1. 
heavenly bodies, xvii, 389. 
, examination of the the- 
, boracic, xlviii, 189. 
ing, S. Guthrie, xxi, 64. 
161. 
——,, hyponitrous, R. Hare, xxxv, 
329. 
, nitrous, new process for, R. 
Hare, ii, 326. 
, nitric, process for, R. Hare, 
xxxill, 241.f 
, enanthic, xxxil, 381. 
, perchloric, C. Hare and M. 
H. Boyé, xi, 50, 382; xlii, 638. 
, silicic, xlix, 192. 
, sulpho-cyanic, xvil, 377. 
, sulphuric, on the manufac- 
ture of, xxil, 199. 
, sulphurous, R. Hare, xxxi, 
275. 
x , and sulphate of ether- 
ine, R. Hare, xxxi, 275. 
, vaporization of, vi, 396. 
, action of, on sulphate of in- 
digo, xxiv, 371. 
, odor of wines due to a pecul- 
lar, Xxxil, 881 (cenanthic ether.) 
Ethers of the vegetable acids, meth- 
od of preparing, xlvil, 197. 
and benzoic compounds, for- 
mulas for, Wohler and Liedig, 
xxvi, 285. 
Etherine, sulphate of, R. Hare, 
XXKI, (2:79. 
, sulphate of, on the destruc- 
tive distillation of, C. Hare, xxxvi, 
76. 
Ethule, perchlorate of the oxide of, 
C. Hare and M. H. Boyé, xlii, 
63. 
Euchlorine, 
164. 
preparation of, vi, 
83 
, resistance to motion of} 
, chloric, new mode of obtain-| 
, hydriodic, M. Serullas, xviii, | 
‘Eupatorium huaco, xxiv, 279. 
Exe 
Eudiometer,; improved, R. Hare, 
ii, 312f; x, 67!; xii, 36f; xxxvii, 
383. 
, barometer gauge, R. Hare, 
wai, 280.f 
subsidiary, R. Hare, 
a7 
Eudiometry, theory of action of ni- 
ory of, R. W. Haskins, xxxiii, 1.) 
trous gas in, J. F. Dana, vii, 
338. 
, new mode, with nitric oxyd, 
and apparatus for, R. Hare, xv, 
262-27 1.f 
Europe, northern, rock formations 
of, xvii, 16. 
, physical geography of, G. F. 
Schouw, xxi, 127. 
, education in, see Education. 
[Eupyrchroite of Emmons, a phos- 
phate of lime, L. C. Beck, xl, 77; 
xvi, 32. 
Evaporation, mode of accelerating, 
1X, 203. 
by means of bladders, xv, 
392. 
of ice, xvi, 390. 
of spirits, 11, 376. 
Excavations of basins or pot-holes 
by water, in the Green Mts., Vt., 
Vi, 252. 
Exhilarating gas, effects of, in two 
cases, v, 194. 
Exley, T., specific gravities of ni- 
trogen, oxygen, chlorine, vapors 
of carbon, sulphur, arsenic, phos- 
phorus, xxxv, 298. 
Exogenites, vii, 179. 
Exogyra, see Zootocy, Mollus- 
ca. 
‘Expansion of solid bodies, instru- 
ment for, W. W. Mather, xxx, 
324.f 
Expedition, exploring, 
Cass, 1, 178. 
, U. States, under Lieut. 
Wilkes, U. S. N., officers of, 
xxxv, 192. 
under L. 
5 ——, progress of, 
XXXVI, 195 ; XXXVII, 189, 398; 
XXXVIll, 387; xxxix, 193. 
