404 INDEX. 
Galvanic Deflagrator, Prof. Hare’s Improved Formis ef the, 99 
Gas, I!luminating, from Cotton Seed, 294 : 
Gas-Lights, 181 
Geodes, Formation of crystals in, 282 
Geographical Society at Paris, 384 
Geography, Woodbridge and Willard’s, 397 
Geological Nomenclature of Phillips and Conybeare, 261 
Geological Society, American, 187, 392 
- Survey on the Grand Canal, 195, 358 ne 
Geology and Mineralogy of the Western part of Massachusetts, 
&c. by Prof. Dewey, 1—his additional remarks on the same 
subject, 240 
ee 
of Sicily, by Prof. Ferrara, 201 
of Easton, Penn. by J. Finch, 236 
of Salisbury, Conn. by C. A. Lee, 252 
Gibbs, Col. remarks on the Malleable Iron, 224 
Gibbsite, 52 
Glass, Capt. A., Journal of his tour, 220 
Glass, Ductility of, 392 
Glauconie Crayeuse, 217 
Granite, Polishing of, 185 
, Singular position of, 4 
Granitic Veins and Beds, in Chester, Mass., 250 
Griscom, Prof. Extracts and Translations, 181, 362 
Proposals for a new Journal, 191 
a 
— 
Hall, Prof. ‘‘ Catalogue of Minerals,’’ 193 
Hare, Prof. improved forms of the Galvanic Deflagrator, 99— 
Single Leaf Electrometer, 103—Combustion of Iron by a 
Jet of Sulphur in Vapour, 104—mode of impregnating water 
with iron, 105—Electro-Magnetic and Galvanic Exper- 
iments, 145—on Prof. Vanuxem’s paper, 288 
Hatiy, Biographical Notice of, 362 
Heat produced by friction, 276 
Horticultural Society, New-York State, 398 
Howard, Prof W. on the Stopping of Astronomical Clocks, 277 
Hydrate of Iron, Analysis of, 298 
Hydrogen Gas, a volatile oil from, 374 
, respiration of, 375 
Tce Houses, Natural, 254 
Instruction Monitorial, 185 
Johnson, Judge, letter to the Editor, 223 
Journals, French Periodical, 385 
Journal, Prof. Griscom’s proposals for a new, 191 
, Médical de La Gironde, 388 
