410 
Electro-magnetism, experiments in, 118. 
—_—______—_—_ pamphlet on, 193. 
Electrotome, new form of, 378. 
Elemente der technischen Chemie, 204. 
Elevation and subsidence, proofs of mod 
ern, 97. 
———— temperature of, 52. 
Encrinite, tufa, &c. 405. 
English lexicography, contributions to, 
324. 
Eremite, crystallographic examination 
of, 70. 
Essex County, N. Y., visits to the moun- 
tains of, 301. 
Ether, nitric, process for, 241. 
Excitement, electrical, extraordinary 
case of, 394. 
F. 
Feet, impressions of, in rocks, 398. 
_Ferussac, Baron, biographical notice of, 
78. 
Figures of crystals, on the drawing of, 30. 
Fire bricks and hearth stones for fur- 
naces, 202. 
Flora Cestrica, 183. 
Fogs, clouds and rain, 54. 
Fossil plants, 270. 
remains of the Toxodon, &c. 208. 
Fox, Charles, on the motion of melted 
grease in a candle while burning, 198. 
R. W.., questions relative to mine- 
ral veins, 135. 
Furnaces, fire bricks for, 202. 
G. 
Galvanic influence, crystallization of 
metals by, 267. 
Galvanometer, thermoscopic, 365. 
astatic, 376. 
Gaylord, Willis, on the influence of the 
great lakes on our autumnal sunsets, 
- 335. 
Geological Society of London, Mr. Ly- 
ell’s address to, 76. 
= survey of the state of Connec- 
ticut, notice of, 151. 
Geology, foreign, 95. 
Lyell’s, 182. 
——__—— of the British Isles, 79. 
———— of the desert between Suez and 
Cairo, 288. 
Gibbs, J. W., contributions to English 
lexicography, 324. ! 
Gold, alembic for distilling amalgam of, 
66. 
Gravel, boulders, &c. 287. 
Grease, melted, motion of, ina candle 
while burning, 198. 
Greece, mineral resources of, 207. 
Green, Jacob, description of a new Tri- 
lobite, 406. 
—— — remarks on the genus Par- 
adoxides of Brongniart, and on p 
serving the genus Triarthrus, 341. 
INDEX. 
Hw. 
Hail, 55. 
Hall, F., notice of oriental minerals, 249. 
—— James, descriptions of two species 
of Trilobites, belonging to the genus 
Paradoxides, 139. 
Hare, Robert, description of an air pump 
of a new construction, 237. 
—— letter from, to Dr. Dalton, 
195. 
on sundry improvements 
in apparatus, or manipulation, 244. 
on the cause of the collapse 
of a reservoir, 242. 
———_—__— processfor nitric ether, 241. 
Haskins, R. W., on the theory of a re- 
sisting medium, 1. 
Herrick, E. C., on an annual meteoric 
shower in August, with remarks on 
shooting stars im general, 354—sup- 
plementary facts on meteoric showers 
in August, 401. 
—————— on the aurora borealis of 
July 1, 1837, 144. 
—_—_———— on the occurrence of the 
aurora borealis in summer, 297. 
on the shooting stars of 
August 9th and 10th, 1837, and on the 
probability of the annual occurrence 
of a meteoric shower in August, 176. 
Hoffmann, Prof. Frederick, biographical 
notice of, 76. 
Holland, observations in, 228. 
Hosford, Willard, on an extraordinary 
case of electrical excitement, 394. 
Hudson river, exploring visits to the 
sources of, 301. 
Hurricane in Ohio, Oct. 20, 1837, 368. 
Fushams Auroral Register, abstract of, 
98. 
Hydro-pneumatic cistern, 246. 
I. 
Ichnolites, newly discovered, 201. 
Iconography and general! species of re- 
cent shells, 184. 
Impressions in sandstone, 271. 
———— of feet in rocks, 398. 
Insects, method of destroying, 273. 
not produced by galvanism, 272. 
Instruments, mathematical, philosophi- 
cal and chemical, 408. 
Interruptor or electrotome, new form of, 
378. 
Iolite, new locality of, 399. 
Iron, 266. 
—— cast, properties of, 292. 
— corroding of, by salt water, 286. 
in Connecticut, 155. 
—— meteoric, 257. 
if 
Johnston, John, sketch of the early his- 
tory of Count Rumford, 21, 
