---- marmolite, _T. Nuttall_, iv, 17, 19. ---- Masonite, _C. T. Jackson_, xl, 186; xlviii, 218. ---- melanite of Franklin furnace, N. _J., H. Seybert_, viii, 300. ---- Menardite, xii, 386. ---- meteoric iron of Canaan, Ct., _C. U. Shepard_, xii, 155. ---- ---- ---- from Claiborne, Alabama, _C. T. Jackson_, xxxiv, 332; xlviii, 145. ---- ---- ---- ibid, _A. A. Hayes_, xlviii, 147. ---- ---- ---- of Oswego, N. Y., _C. U. Shepard_, xl, 366. ---- ---- ---- from Guilford Co., N. Carolina, _C. U. Shepard_, xl, 369. ---- ---- ---- from Buncombe Co., N. Carolina, xxxvi, 81. ---- ---- ---- from Maryland, Feb. 1825, _G. Chilton_, x, 131. ---- ---- ---- from Virginia, _C. U. Shepard_, xvi, 191. ---- ---- ---- from Tennessee, of 1827, xvii, 326. ---- ---- ---- from Tennessee, _G. Troost_, xxxviii, 250. ---- ---- ---- from Tennessee, _C. U. Shepard_, xliii, 354. ---- ---- ---- from Texas, _C. U. Shepard_, xvi, 217. ---- meteorite of Juvenas, France, 1821, vi, 397. ---- ---- South African Cold Bokkeveld, xxxvii, 190. ---- ---- France, Chateau Renard, xlii, 403. ---- ---- of U. States, in Maine, August, 1823, ix, 400. ---- ---- ----, in Connecticut, Weston, i, 273. ---- mica yellow and lepidolite, xxxvii, 361. ---- microlite, _C. U. Shepard_, xxxii, 338; xliii, 119. ---- ----, _A. A. Hayes_, xliii, 33; xlvi, 158. ---- mineral waters, see Analysis of _waters_, below. ---- molybdena, _H. Seybert_, iv, 320. ---- mud, New Haven harbor, _B. Silliman, Jr._, xlviii, 337. ---- Murchisonite, xv, 386. ---- needle ore, xxviii, 395. ---- nephrite, _G. T. Bowen_, v, 346. ---- olefiant gas, _R. Hare_, xv, 270. ---- olivine, ix, 379; xiii, 184. ---- organic compounds, determination of nitrogen in, xlv, 267. ---- Oxahverite, xv, 387. ---- pennine, xlvii, 216. ---- Pickeringite, _A. A. Hayes_, xlvi, 360. ---- picropharmacolite, vii, 368. ---- platina of Russia, _J. Berzelius_, xviii, 162. ---- polymignite, xviii, 392. ---- pollen, _M. Prinsep_, xviii, 402. ---- pyrargillite, _M. Nordenskiöld_, xxvi, 387. ---- pyrochlore, xviii, 392. ---- ----, _M. Wöhler_, xliii, 35. ---- ----, _A. A. Hayes_, xlvi, 163. ---- pyromorphite, _C. Kersten_, xxii, 307. ---- pyrophyllite, xviii, 392. ---- pyroxene, Franklin Iron works, _H. Seybert_, v, 113; vii, 145. ---- Rensselaerite, xl, 77. ---- rhodium gold, of Mexico, xi, 298. ---- sea water, near Brighton, xxxviii, 12. ---- seleniuret of lead, xviii, 391. ---- ---- ---- and mercury, xviii, 391. ---- serpentine marble, Vt., _C. T. Jackson_, xxxviii, 198. ---- Seybertite, _T. G. Clemson_, xxiv, 171. ---- shells, _W. B. Rogers_, xxvi, 361. ---- Sillimanite, _G. T. Bowen_, viii, 113. ---- Sillimanite, xlvi, 382; xlviii, 219. ---- ----, _T. Thomson_, xlix, 396. ---- Sismondine, _M. Delesse_, xlvii, 217. ---- soda alum of Milo, _C. U. Shepard_, xvi, 203. ---- spathic iron, _T. G. Clemson_, xxiv, 170. ---- spodumene, Sweden, vii, 371. ---- steatitic pseudomorphs, _L. C.