Salt, _J. Van Rensselaer_ on, vii, 360. ----, a mode of obtaining large crystals of, xvi, 397. ----, a remedy for animal poisons, xxi, 158. ----, gas in the cavities of, producing decrepitation, xix, 198. ---- storms, influence of, on vegetation, _J. B. Beck_, i, 388. ----, ibid, on animals, i, 394. ----, quantity of, in sea-water, _C. Daubeny_, xxxvi, 188. ----, marine, arsenic detected in, xx, 193. ---- infusoria, xli, 193. ---- beds, origin of, _L. Vanuxem,_ xii, 88. ---- manufactured by evaporation on faggots, x, 180. ---- in Asia, Tabriz, Lake Oroomiah, and of the great desert of Arabia, xxxvii, 350. ---- in Europe, annual yield of mines, iii, 371. ---- ----, in Russia, xvii, 19, 20. ---- ----, ----, steppe south of Orenburg, _R. I. Murchison_, xliv, 205. ---- ----, mines of Ischil, xxix, 225. ---- ----, in France, impurities of, xix, 178. ---- ----, mines in Cheshire, England, xxiii, 219. ---- in South America, on the plains of Tarapaca, _J. H. Blake_, xliv, 2. ---- ----, New Grenada, works of Zipaquera, _J. H. Gibbon_, xxxii, 89. ---- in North America, U. States, springs and deposits, _G. W. Carpenter_, xv, 1. ---- ----, New York, rocks and springs of, xv, 5, 6, 214; xxxvi, 2; xxxix, 103. ---- ----, ----, works of Onondaga lake, xlii, 228. ---- ----, ----, works of Salina and Syracuse, xv, 6; xix, 141. ---- ----, ----, manufacture of, xxxvi, 2. ---- ----, Pennsylvania, valley of the Kiskiminitas and Conemaugh, _S. P. Hildreth_, xxix, 71. ---- ----, Ohio, region of, _S. P. Hildreth_, xxiv, 46. ---- ----, ----, of the Muskingum valley, _S. P. Hildreth_, xxiv, 50; xxix, 26. ---- ----, ----, of Sundy Creek, xxix, 48. ---- ----, ----, mode of making the salt in the Ohio valley, xxiv, 54. ---- ----, ----, history of manufacture of, _S. P. Hildreth_, xxix, 117. ---- ----, in Virginia, and salt formation, xli, 214. ---- ----, ----, Kenawha valleys, _S. P. Hildreth_, xxiv, 51; xxix, 84, 113. ---- ----, ----, of the Holston, _C. B. Hayden_, xliv, 173. ---- ----, in Michigan, xxxiv, 192. ---- ----, in Kentucky, xxix, 140. ---- ----, in Texas, springs of, xxxvii, 213. ----, see farther _Springs, salt_. ----, theory of, xxix, 115. ---- marshes of the Mediterranean, red color of, due to a crustaceous animal, xli, 193. ---- radical theory, criticism on, _R. Hare_, xlv, 52, 247. ---- ----, ----, criticism on, _W. Gibbs_, xlvi, 52. ---- ----, ----, _R. Kane_, xlvi, 57.