Granite, artificial, xxiv, 205. ----, durability of, as compared with marble, xv, 168. ---- of Northern America, xvii, 1, _et seq._ ----, in Canada, origin of, _R. H. Bonnycastle_, xxx, 246. ---- intermixed with a fossiliferous limestone at Cataraqui, xviii, 104. ---- in Nova Scotia, xv, 206. ---- in New Hampshire, veins of, _O. P. Hubbard_, xxxiv, 123.^f ----, ----, porphyritic, vi, 10. ----, in Massachusetts, viii, 4; xxii, 14. ----, ----, graphic, i, 138; vi, 16; vii, 22.^f ----, ----, porphyritic, viii, 4. ----, ----, pseudomorphous, vi, 17; vii, 22.^f ----, ----, veins of, _E. Hitchcock_, vi, 13. ----, ----, ----, _C. Dewey_, viii, 4. ----, ----, ----, _E. Emmons_, viii, 250.^f ----, ----, ----, in mica slate, viii, 5.^f; xxvii, 344. ----, ----, ----, in granite, _A. Nash_, xii, 261.^f ----, ----, ----, in syenite, vi, 14.^f ---- in the Connecticut valley, vi, 1, _et seq._ ---- in Connecticut, graphic, ii, 204, 240. ---- in Pennsylvania, viii, 237. ---- in Vermont, at Bellows Falls, Vt., vi, 11. ---- quarry at Port Deposit and elsewhere, Maryland, xxvii, 19, 20. ---- in Italy, secondary, vii, 186. ---- at Christiana, Norway, xxxiv, 204. ----, views of _C. Lyell_ on, xxxiii, 116. ---- sometimes metamorphic, _J. D. Dana_, xlv, 108. ----, means of polishing, viii, 185. ----, polishing of, in India, iv, 246. Granitogeny, a poem, v, 283. _Grant, H. A._, a week among the glaciers, xlvi, 281. Graphic granite in Massachusetts, i, 138; vi, 16; vii, 22.^f ---- ---- in Connecticut, ii, 204, 240. Graphite, conversion of cannon balls into, iv, 178. ---- in coal-gas retorts, vii, 380. ----, formed by pressure, xlix, 227. ----, fusion of, by galvanism, vi, 341. ---- of Sturbridge, Mass., xviii, 377. ---- of Worcester, Mass., probable age of, _C. Lyell_, xlvii, 214. ---- of Wake, N. Carolina, notice of, _D. Olmsted_, xiv, 243. ----, mode of working mine of, at Borrowdale, xxxi, 177. ---- of Ticonderoga, vi, 178. ---- at Mount Dunderberg, N. Y., v, 29. ----, for chronometers instead of oil, xviii, 179. ---- in Maine, x, 17. ---- in New Hampshire, ii, 241; vi, 245. ---- in Massachusetts, vi, 248; viii, 54; x, 18; xviii, 377; xxii, 47. ---- in Connecticut, i, 239, 354; ii, 238; viii, 259; xxxiii, 164. ---- in New York, i, 237; iv, 48; v, 29; vi, 178; ix, 41; xix, 224; xl, 75. ---- in New Jersey, v, 246. ---- in Pennsylvania, x, 220; xiv, 10, 14. ---- in Maryland, xviii, 80. ---- in the Carolinas, iv, 53; v, 263, 264, 407; xiv, 243. ---- in Canada, viii, 74. ---- battery, _B. Silliman, Jr._, xliii, 393; xliv, 180.^f Graptolites, remarks on, xlvii, 370.^f Grasshopper's leg a substitute for frogs in galvanic experiments, _J. W. Bailey_, xxxi, 292.^f Grasses, the importance of, to man, _W. Darlington_, xli, 365. Gratiola micrantha, v, 287. ---- missouriana, x, 258. Gravel, singular deposit near Troy, _A. Eaton_, v, 22.