Glass, manufacture of, iii, 370. ----, ----, _H. N. Fenn_, xvi, 112.^f ---- from burning hay, xix, 395; xxiv, 174. ----, blowing of, xxiv, 380. ----, cloth of, xxxix, 386. ----, ductility of, viii, 392. ----, on the decomposition of, _D. Brewster_, xl, 324. ----, decay of an object-, xxviii, 69. ---- decomposed, rings of polarized light produced in specimens of, _D. Brewster_, xl. 325. ----, dividing of, by friction, _R. Hare_, xiii, 7.^f ----, _Guinand's_ flint, ix, 380. ----, opaline, cause of color of, xxvi, 66. ---- for optical purposes, manufacture of, _A. Bourne_, xl, 207. ----, porosity of, vii, 192. ----, spectacle, xxvii, 80. ----, silvering of, according to _Drayton's_ method, xlix, 198. ---- beads, manufactory of, at Venice, xxvii, 78. ---- houses, improved mode of drying wood for, xvii, 163. ---- vessels, method of cutting, xxiv, 206. ---- or porcelain vessels, a crust formed on, removed by muriatic acid, xxvi, 188.
Glasses, lamp, to prevent the cracking of, xxi, 165.
Gmelinite or hydrolite, _A. Connell_, xxxv, 195.
Gnathodon, _T. A. Conrad_, xxxviii, 92.^f
Gneiss of the Connecticut valley, vi, 18.^f ---- quarries of Connecticut, _C. U. Shepard_, xxxiii, 170. ---- in western Massachusetts, viii, 5.^f ----, glandulous, vi, 20.
Goat, Cashmere Angora, remarks on, xxv, 208.
_Göbel's_ observations on formic acid, xxviii, 127.
_Göthe, F. W._, honors to, from the king of Bavaria, ix, 184; xv, 171.
Gold coinage in the United States, xx, 403. ----, amount deposited at the mint of the U. States, xx, 404. ----, an alloy imitating, x, 384; xiv, 371. ----, alembic for distilling amalgam of, _M. F. Maury_, xxxiii, 66.^f ----, new cyanide of, xlviii, 191. ----, fulminating, ii, 350; xlviii, 192. ----, medical uses of, xvi, 385. ----, method of refining, xvii, 177. ----, mosaic, xiii, 174. ---- oxides, purple of Cassius, ii, 350; xx, 192; xxviii, 145; xlviii, 192. ----, native, in Canada, _F. H. Baddely_, xxviii, 112. ----, ----, at New Fane, Vt., xii, 177; xxii, 63. ----, ----, in Maryland, xvii, 202. ----, ----, in Virginia, in talcose slate, _H. H. Hayden_, xx, 164. ----, ----, ----, account of mines and region, _B. Silliman_, xxxii, 98. ----, ----, ----, Moss and Busby's mines, _B. Silliman_, xxxii, 99. ----, ----, ----, Culpeper mine, _B. Silliman_, xxxii, 117, 185. ----, ----, ----, Louisa county mines, _B. Silliman_, xxxii, 126. ----, ----, ----, Fauquier and Culpeper Co. mines, _B. Silliman_, xxxii, 127. ----, ----, ----, large masses of, _B. Silliman_, xxxii, 101. ----, ----, ----, experiments on different varieties of rock containing, _B. Silliman_, xxxii, 105. ----, ----, ----, U. States mine near Fredericksburg, _M. F. Maury_, xxxii, 325. ----, ----, ----, ----, ibid, mode of working and yield, xxxii, 183. ----, ----, in Carolina, miscellaneous notices of, iii, 3; xvi, 360; xvii, 400; xlviii, 398. ----, ----, ----, large masses of, ix, 9. ----, ----, ----, _D. Olmsted_, on the mines of, ix, 5; xiv, 237. ----, ----, ----, remarks on mines of, _C. E. Rothe_, xiii, 201.^f ----, ----, ----, miscellaneous notices of the geology of the region of, _E. Mitchell_, xvi, 1.^f ----, ----, ----, on the nature of deposits, _F. L. Smith_, xxxii, 130. ----, native, of the Carolinas, in talcose slate, _A. Eaton_, xviii, 50. ----, ----, in Georgia, mines of, _W. Phillips_, xxiv, 1.^f ----, ----, ----, ----, washing for, xxiv, 14.^f ----, ----, ----, remarks on, xxxiv, 397. ----, ----, ----, analysis of, _W. W. Mather_, xxvii, 255. ----, ----, ----, western North Carolina and eastern Tennessee, geological account of districts, _J. Peck_, with a map, xxiii, 1.^f ----, ----, region of the U. States, xxvii, 348. ----, ----, yield of branch mines of U. States, xxvii, 350. ----, ----, of Mexico, in a rock equivalent to that containing the gold of the Carolinas, _A. Eaton_, xx, 124. ----, ----, mines of Brazil, yield of, xx, 403. ----, ----, in France, xl, 216. ----, ----, in Russia, annual yield, xvii, 406; xx, 402; xxi, 372. ----, ----, ----, in the Ural, deposit, ix, 183; xxviii, 395; xlvi, 211. ----, ----, ----, mines of Tobolsk, xvii, 25. ----, ----, a mass of twenty-five lbs., from the Russian mines, xii, 384. ----, ----, large mass of, found in N. Carolina, ix, 9. ----, ----, large masses of, in Virginia, _B. Silliman_, xxxii, 101. ----, ----, table showing the amount yielded by mines, xx, 401. ----, ----, containing rhodium, from Mexico, xi, 298. ---- coins, wear and tear of, throughout the world, xx, 402. ---- coinage, in the United States, amount of, xx, 403. ---- leaf, the blue color of transmitted light, _Dupasquier_, xlix, 391. ---- ----, adhering through electrical attraction, v, 198.