I.

Ice, artificial preparation of, xviii, 145. ----, evaporation of, xvi, 390. ----, formation of, in still water, iii, 179. ----, ----, at the bottom of rivers, _H. W. Sheffey_, xxxvi, 186. ----, ----, ibid, _T. Stratton_, xl, 407. ----, ----, sparks given out during, xxvi, 178. ---- in a well, xxxvi, 184. ---- of the sea, characters of, and remarks on, v, 131. ----, Greenland, i, 101. ---- of the Alps, _J. D. Forbes_, xlvi, 173; --veined structure and motion consequence of its viscous condition, xlvi, 174, 175.

Icebergs, remarks on, v, 131. ----, formation of, _C. Wilkes_, xlvii, 114. ----, _J. P. Couthouy_, xliii, 154. ----, character of, and facts concerning, _J. L. Hayes_, xlv, 316. ---- and currents of the North Atlantic, _W. C. Redfield_, xlviii, 373.^f ---- in low latitudes, xxii, 200. ----, theory of drift, see _Drift_.

Ice houses, natural, iv, 174. ---- ----, ----, in Salisbury, Ct., viii, 254. ---- ----, ----, near Williamstown, Mass., iv, 331; v, 398. ---- ----, ----, of St. Ouen, xii, 184.

Ice mountain of Hampshire Co., Va., _C. B. Hayden_, xlv, 78.^f ---- ---- in Vermont, _S. P. Lathrop_, xlvi, 331. ---- water, drinking of, xv, 194.

Iceland, notice of, xvii, 15. ----, geysers, springs, &c. of, _E. Robert_, xxxi, 167; xxxii, 196. ----, ----, remarks on, _G. Bischof_, xxxvi, 255.

Ichnolithology, see _Footprints_.

Ichthyolites, see _Fish_.

Ichthyosaurus, largest, found by _Mary Anning_, xxviii, 369. ----, in U. States, xxvii, 353. ---- at Strensham, England, xxxviii, 126.

Ichthyosauri, _T. Hawkins_, xxvii, 413.

Iconography, xxxiii, 184.

_Ideler, J. L._, views of, on meteorites, shooting stars and Auroras, xxviii, 288.

Idocrase, analysis of, _T. Richardson_, xxxviii, 120. ----, of Skye, xxviii, 395. ----, American, first detected, _W. Meade_, vii, 50. ----, crystal, from Amherst, N. H., xlvi, 381.^f ----, in Connecticut, ix, 44. ----, in Massachusetts, viii, 44; x, 11. ----, in N. York, xvii, 145; xxi, 327; xlvi, 35. ----, in Rhode Island, viii, 230.

Idria quicksilver mines, xxix, 219.

Igneous action, as indicated by certain minerals in New York, _L. C. Beck_, xlvi, 333. ---- origin of some trap rocks, _B. Silliman_, xvii, 119. ---- ---- ibid, _T. Cooper_, iv, 205. ---- theory of the earth, remarks on, _W. Maclure_, xvi, 351. ---- ---- ----, as connected with the secular variation of the magnetic needle, _J. H. Lathrop_, xxxviii, 68. ---- ---- ----, applications of, ibid, xxxix, 90.

Ignis fatuus, observations on, _J. Mitchell_, xvi, 246.

Iguanodon, bones of, in Mantell's Museum, xxiii, 165. ----, discovery of, xxvii, 355.^f ----, Maidstone, xxvii, 420.

Ilicine, in fevers, xxii, 349.

Ilex laurifolia, v, 289.

Illinois, geology of Upper, _C. U. Shepard_, xxxiv, 134.^f ----, ----, ibid, coal formation, xxxiv, 142.^f ----, Lake shore near Chicago, xxxiv, 134. ----, route, expense, &c., of the Michigan and Illinois canal, xxxiv, 138. ----, mineral and brine springs, xxxiv, 157.

Ilmenite, (Crichtonite,) localities of, in Connecticut, xii, 161, 170; xxxv, 179; xliii, 364.^f ----, in Pennsylvania, xiv, 6, 7. ----, in Rhode Island, xxxv, 180.

Impression in marble near Philadelphia, notice of, _J. B. Browne_, xix, 361.^f

Incas, dominion of, xxxviii, 365.

Inclined planes, on, _J. Thomson_, xxiii, 107.

Indelible coloring, xxiv, 373. ----, ink, see _Ink_.

India, culture of cotton in, attempted, xl, 40.

India rubber carpets, xxvi, 191.

Indian attacks on Wheeling, xxxi, 3. ---- axe of hornblende rock, xliii, 31.^f ---- cemetery, Ohio, _S. P. Hildreth_, xxxi, 69. ---- corn, origin of, xix, 186. ---- ----, oil of, xliii, 403. ---- mounds of the West, xxii, 124. ---- ----, crania, &c., _Dr. Warren_, xxxiv, 47. ---- ----, and earthworks in the form of animal effigies, _R. C. Taylor_, xxxiv, 88.^f ---- ----, and other remains in Iowa and Wisconsin, _S. Taylor_, xliv, 21.^f ---- ----, _Col. Whittlesey_, xxxiv, 361. ---- ----, and relics, near Natchez, _C. G. Forshey_, xl, 376. ---- ----, in Louisiana, _C. G. Forshey_, xlix, 38.^f ---- ----, in Indiana, _J. T. Plummer_, xliv, 313. ---- mummies and remains in the caves of Tennessee, xxii, 124. ---- remains, skeleton, &c., xxxiv, 47. ---- races of America, characteristics of, _S. G. Morton_, xxxviii, 347; xlvii, 408. ---- ----, ancient Peruvian, xxxviii, 360.^f ---- ----, Araucanian, xxxviii, 368.^f ---- ----, Huron, xxxviii, 368.^f ---- ----, remarks on, _R. C. Taylor_, xxxiv, 88. ---- sepulchre and remains, xxxi, 8.^f ---- summer, remarks on, xviii, 66. ---- ----, remarks on, _L. Foot_, xxx, 8. ---- ----, essay on, xxvii, 140. ---- utensil, ancient, _W. R. Johnson_, xxiii, 65.^f ---- words in the English language, _J. W. Gibbs_, xli, 28. ---- ----, names of beasts, birds and insects, origin of, _J. W. Gibbs_, xli, 39.

Indians, Esquimaux, remarks on, xvi, 145. ----, Seminole, ix, 132. ----, adventure of Lewis Wetzel among, xxxi, 14. ----, murder of Logan's family by, xxxi, 11.

Indiana, sketch of the geology and mineralogy of, _W. B. Stilson_, i, 131. ----, ibid, cave near Corydon, containing Epsom salts, i, 133. ----, geological report on, by _D. D. Owen_, noticed, xxxiv, 193; xl, 133. ----, suburban geology of Richmond, _J. T. Plummer_, xliv, 281.^f ----, pisolitic rocks, _J. T. Plummer_, xliv, 283.^f ----, phosphate of iron, _J. T. Plummer_, xliv, 287. ----, fossil including fossil fuci, _J. T. Plummer_, xliv, 290.^f ----, ancient wood and stumps of trees, _J. T. Plummer_, xliv, 302. ----, boulders in, _J. T. Plummer_, xliv, 303. ----, magnesia in the water of, _J. T. Plummer_, xliv, 307. ----, soil of, _J. T. Plummer_, xl, 198; xliv, 310. ----, mounds of, _J. T. Plummer_, xliv, 313.

Indigo, _J. Dalton's_ mode of testing the value of, ix, 385. ----, analysis of, xviii, 241. ----, mode of assaying, _S. L. Dana_, xlii, 320. ----, on the manufacture of, in the U. States, _W. Partridge_, xviii, 237.

Induction, electrical, see _Electrical_.

Inertia, remarks on, _Z._, xiv, 50.

Infinites, on, _I. Orr_, v, 326.

Infusoria, _Turpin_, on siliceous, xxxii, 400. ----, _C. G. Ehrenherg's_ discoveries in relation to fossil and recent, xxxiii, 111; xxxv, 371^f; xxxvii, 116. ----, ----, in volcanic rocks, xlix, 397. ----, ----, in argillaceous formation, at Berlin, xlii, 388. ----, ----, conclusions on, xxxviii, 405; xlvii, 208. ----, _C. G. Ehrenberg_, on American, xliii, 393; xlvi, 297. ----, ----, near Richmond, Virginia, xlvi, 300. ----, ----, Maryland and Virginia, xlviii, 201. ----, ----, near West Point, New York, xlvi, 302; xxxix, 191. ----, _J. W. Bailey_, in peat earth, West Point, xxxv, 118.^f ----, ----, from Oregon, Bermudas, Virginia and Maryland, catalogue of, xlviii, 321.^f ----, ----, Connecticut, New Haven harbor, xlviii, 337.^f ----, ----, S. Carolina, Charleston harbor, xlviii, 338.^f ----, ----, Virginia, xli, 214; xlv, 313; xlvi, 137^f; xlviii, 330.^f ----, ----, Nova Scotia, xlviii, 339. ----, ----, with bones of Mastodon, xlviii, 339. ----, ----, of the family Baccillaria, xli, 284^f; xlii, 88^f; xliii, 321^f;--localities, xliii, 328, 329. ----, _E. Hitchcock_, remarks on the discoveries of, xli, 258. ----, _W. B. Rogers_, stratum of, near Richmond, Virginia, xlv, 313; xlvi, 141.

Infusorial vegetable remains in England, _J. E. Bowman_, xl, 174.

Injection, venous, improved instrument for, xxiii, 114.^f

Ink, antediluvian, _J. T. Plummer_, xliv, 287. ----, black writing, improvement in, _J. Bostoch_, xx, 195. ----, receipt for, xxx, 169. ----, made with chesnut bark, ix, 202. ----, India, substitute for, xxvi, 189. ----, indelible, xxiii, 201. ----, ----, composition of, _Traill_, xxxvi, 209. ----, ----, _H. Braconnot's_, xvii, 172, 371. ----, ----, stain from, discharged by corrosive sublimate, xxvi, 392. ----, sympathetic, xviii, 148.

Inking machine, Wood's, xxiii, 103.^f

Insanity, _B. W. Dwight's_ cases of, i, 431. ----, connection of civilization with, xxii, 379.

Insects, circulation in, xxx, 186. ----, miscellaneous observations on, _J. T. Plummer_, xl, 146. ----, a means of protecting trees from, x, 204. ----, method of destroying, xxxiii, 273. ----, on the preservation of, _T. Roger_, xix, 213. ----, produced, as supposed, by galvanism, _A. Crosse_, xxxii, 374^f; xxxv, 125.^f ----, ibid, _W. H. Weekes_, xliii, 395. ----, not produced by galvanism, xxxiii, 272; xlix, 227.

Inspiration of inflammable gas, xiv, 370.

Institute, Albany, transactions of, noticed, xvii, 208, 415; xix, 173, 360. ----, Mechanic's, New York, notice of proceedings, xxxi, 415. ----, National, a society established at Washington, xli, 203.

Interest, new mode of computing, _G. R. Perkins_, xlvii, 51.

Interference of light, new case of, _Powell_, xxxviii, 107. ---- ----, apparatus for experiments on, _E. S. Snell_, xlix, 26.^f

Iodate of soda, iodate of magnesia, and a borate, &c., Tarapaca, _A. A. Hayes_, xxxviii, 410; xxxix, 378; xliv, 6.

Iodic acid, crystallization of, xx, 185. ----, action of, with morphine, xx, 184. ---- ----, combinations of, with vegetable alkalies, xix, 371. ---- ----, preparation of, xxviii, 136.

Iodide of azote, preparation of, _Serullas_, xviii, 154. ---- of calcium and potassium, xvii, 177. ---- of lead, decomposition of, xv, 188.

Iodine, iii, 386. ----, acidification of, by nitric acid, xxi, 376. ----, atomic weight of, _J. J. Berzelius_, xix, 383. ----, crystallization of, xvii, 168. ----, ----, _W. W. Mather_, xviii, 84.^f ----, action of, on the protochloride of mercury, xvi, 395. ----, a reagent for hydrosulphuric acid, _A. du Pasquier_, xl, 123. ----, used as a dye, xv, 394. ----, medical uses of, iii, 386; vi, 383. ----, ---- ---- of tincture of, xx, 196. ----, ---- ----, ibid, in a report by _Dumeril_ and _Magendie_, xx, 386. ----, ---- ----, in Anguina pectoris, xx, 411. ----, ---- ----, in causing disappearance of the breasts, xi, 395. ----, ---- ----, in gout and Anguina pectoris, xvi, 176. ----, ---- ----, as a cure for the goitre and scrofula, v, 387. ----, occurrence of, in coal, _Bussy_, xl, 217. ---- and bromine in mineral waters, remarks on, _C. Daubeny_, xxi, 366. ---- in a mineral spring in Italy, vii, 387. ---- in the Saratoga mineral water, xvi, 217; _J. H. Steel_, xvi, 242. ---- in the Kenawha waters, xviii, 260. ---- and bromine in the salt springs of Athens, Ohio, _W. W. Mather_, xlix, 211. ---- in plants and mosses, xlv, 227. ---- in sponges, ii, 363. ----, in an ore of zinc, xvi, 389. ----, cyanide of, a mode of obtaining, xiii, 181. ----, fluoride of, _H. B. Leeson_, xlix, 205. ---- and phosphorus, heat from, xxvii, 200. ---- and oxygen, new compound of, (hyperiodic acid) xxviii, 141.

Iolite, analyses of, xlvi, 383. ----, in Connecticut, xxii, 389. ----, in Massachusetts, xxxiii, 399. ----, decomposed varieties of, _C. U. Shepard_, xli, 354.

Iowa, mounds of various imitative shapes in, _S. Taylor_, xliv, 21.^f

Ipecacuana, analysis of, xvii, 385.

Ireland, geographical distribution of plants in, xxxi, 367.

Iridium, method of obtaining, from the platinum residue, _F. Wöhler_, xxvi, 371. ----, means of obtaining pure, _Fremy_, xlviii, 185.

Iris, affords a good test liquor, v, 408.

Iris Duerinckii, xlv, 176. ---- lacustris, iv, 57.

Iriscope, _Reade's_ experiments with, xl, 334.

Iron, action of, on ammonia, xviii, 146. ----, action of air and water on, _Mallet_, xliv, 355. ----, steel and cast iron, remarks on, xxxviii, 121. ----, method of bronzing, xxx, 173. ----, ---- of browning, ix, 168. ----, cementation of, by carburetted hydrogen, xxviii, 362. ----, cold short, method of purifying, xxx, 173. ----, chlorine in, _C. U. Shepard_, xliii, 359. ----, corrosion of, by salt water, xxxiii, 286. ---- when cutting, action of, in motion, on tempered steel, ix, 324; x, 127; xi, 384. ----, deoxidation of the salts of the peroxide of, _C. F. Schönbein_, xlix, 203. ----, experiments on two varieties made from the magnetic ores of Essex Co., N. Y., _W. R. Johnson_, xxxvi, 94.^f ----, manufacture of, by use of anthracite, xxxiii, 266. ----, ----, with the hot blast, xxix, 356. ----, ----, with the hot blast, _T. Clark_, xxxi, 180. ----, ----, by the hot and cold blast, comparative strength of, _Fairburn_, xxxiii, 292. ----, ----, ibid, comparative composition of, _T. Thomson_, xxxiv, 21. ----, ----, gas obtained by water applied in, _J. S. Dawes_, xxxv, 303. ----, oxides of, separation of, _J. Liebig_, xxiii, 379. ----, ----, effect of, on soil, xli, 159. ---- for railways, _D. Mushet_, xxxiv, 15. ----, separation of, from manganese, xiii, 173. ----, method of silvering, xxx, 169. ----, on the different states of, xiii, 159. ----, state of, in soils, _R. Phillips, Jr._, xlix, 394. ----, use of, for stereotyping, xxvi, 192. ----, sulphur in bar, xxviii, 71. ----, sulphuret of, formation of, xxxi, 74. ---- boat, iii, 371. ---- bridge in Prussia, xii, 197. ---- cement, xxx, 171. ---- conduit pipes, vi, 173. ---- furnaces, number in England and Scotland, xvi, 395. ---- mountain of Missouri, iii, 63. ---- ---- ibid, _J. T. Hodge_, xliii, 58. ---- spikes, experiments on the adhesion of, _W. R. Johnson_, xxxii, 34.^f ---- trade of Great Britain, amount of, xx, 176. ---- ---- of Wales, xx, 182. ---- works of Sweden, amount of exports from, in 1828, xviii, 173. ---- ---- of Glasgow, xli, 48. ---- ---- of Russia, improvements in, xxx, 181. ---- ---- of McIntyre, Essex Co., N. Y., _W. C. Redfield_, xxxiii, 303. ---- ----, statistics of, in the U. States, xxii, 179. ---- ----, ----, in Connecticut, _C. U. Shepard_, xxxiii, 157. ---- ----, ----, in Maryland, (1834,) xxvii, 15. ----, meteoric, see _Meteoric_. ----, native, see _Meteoric_. ---- from Bedford Co., Pa., supposed native, chemical examination of, xiv, 183. ---- ores, reduction of, _W. W. Mather_, xxi, 212. ---- ----, ----, in Connecticut, ii, 207.

_Localities._

Iron ores, in Greece, xxxii, 175. ---- ---- in Canada, viii, 75, 76. ---- ---- in Nova Scotia, xv, 157, 159, 201, 210, 213. ---- ---- in United States. ---- ----, in New England, western, viii, 30. ---- ----, ----, in Maine, _C. T. Jackson_, xxxvi, 147, 150. ---- ----, ----, in New Hampshire, at Franconia, viii, 180. ---- ----, ----, ibid, _C. U. Shepard_, xviii, 134, 289. ---- ----, ----, in Massachusetts, southern, and northern Connecticut, (bog) x, 14. ---- ----, ----, ibid, notice of some, xxxvi, 378. ---- ----, ----, general account of, _E. Hitchcock_, xxii, 50. ---- ----, ----, ibid, of Hawley, vi, 208. ---- ----, ----, ibid, of Kent, Richmond, &c., v, 20. ---- ----, ----, of New Braintree, vi, 209. ---- ----, ----, in New England, in Vermont, _F. Hall_, iii, 57; iv, 23. ---- ----, ----, ibid, at Bennington, _C. Dewey_, v, 249. ---- ----, ----, ibid, at Plymouth, (spathic) ix, 22. ---- ----, ----, ibid, ibid, _T. G. Clemson_, xxiv, 170. ---- ----, ----, in Rhode Island, xl, 185. ---- ----, ----, in Connecticut, _C. U. Shepard_, xxxiii, 152. ---- ----, ----, ibid, at New Milford, (spathic) vi, 209; xix, 311.^f ---- ----, ----, in Kent, hematite, ii, 216; vi, 209. ---- ----, ----, in Salisbury, ii, 212; vi, 208; xix, 322. ---- ----, ----, in New York, xlvi, 25. ---- ----, ----, ibid, of Clinton group of rocks, (argillaceous) xlviii, 301. ---- ----, ----, ibid, of Columbia and Dutchess Cos., xxxvi, 21. ---- ----, ----, ibid, of Crown Point, iv, 48. ---- ----, ----, ibid, of Essex Co., xxxvi, 26; xl, 81. ---- ----, ----, ibid, at Hillsdale and Amenia, viii, 243. ---- ----, ----, ibid, in Orange Co., xvii, 203. ---- ----, ----, ibid, in Jefferson and St. Lawrence Cos., xl, 81. ---- ----, ----, ibid, in Scoharie Co., xxviii, 176. ---- ----, ----, ibid, in St. Lawrence Co., _J. Finch_, xix, 220. ---- ----, ----, in New Jersey, at Franklin, v, 243. ---- ----, ----, ibid, at Pompton Plains, v, 28. ---- ----, ----, ibid, in Morris Co., v, 28. ---- ----, ----, in Pennsylvania, analyses of, _W. R. Johnson_, xxxviii, 383; xxxix, 142. ---- ----, ----, in Maryland, _Ducatel_ and _Alexander_, xxvii, 7, 13, 32. ---- ----, ----, near Baltimore, titanic, _T. G. Clemson_, xvii, 42. ---- ----, ----, in Ohio valley and Ohio, _S. P. Hildreth_, xxix, 129^f, 137; xxxi, 61, 68. ---- ----, ----, in Michigan, xxxiv, 192. ---- ----, ----, in Illinois, _C. U. Shepard_, xxxiv, 159. ---- ----, ----, in Missouri and the West, iii, 26, 63; xliii, 67. ---- ----, ----, in North Carolina, v, 417; xiv, 235; xli, 183, 348. ---- ----, ----, in Alabama, xlviii, 399. ----, arsenical, in New Hampshire, xxiv, 386; xlvi, 384. ----, ----, in Connecticut, vi, 232. ----, ----, in New York, xxi, 326. ----, bog, in Maine, x, 18. ----, ----, in Massachusetts, i, 343; ix, 43; x, 14; xxii, 55. ----, ----, in Connecticut, x, 14; xxxiii, 156, 160. ----, ----, in New York, v, 270; xxviii, 176. ----, ----, in New Jersey, _H. Seybert_, with an analysis, viii, 298. ----, ----, in Pennsylvania, iv, 4; xiv, 5. ----, ----, in Maryland, xxvii, 7. ----, ----, in North Carolina, xiv, 235. ----, ----, in Michigan, xxxiv, 192. ----, ----, in Canada, viii, 76. ----, argillaceous, in Massachusetts, iv, 285; xxii, 55. ----, ----, in New York, xlviii, 301. ----, ----, in Ohio, xvi, 156. ----, ----, in Maryland, xxvii, 32. ----, ----, in Delaware, xiv, 11. ----, ----, in Canada, viii, 76. ----, carbonate of, or spathic, in New Hampshire, vi, 245. ----, ----, in Vermont, Plymouth, ix, 22; xxiv, 170, (with analysis.) ----, ----, in Massachusetts, v, 269; ix, 54; xxii, 50. ----, ----, in Connecticut, ii, 226; vi, 209; xix, 311^f, (New Milford); xxxiii, 160. ----, chromic, in Vermont, xxviii, 383. ----, ----, in Massachusetts, vi; 248; viii, 56; xxiv, 397. ----, ----, in Connecticut, vi, 233. ----, ----, in New York, ix, 243. ----, ----, in Pennsylvania, viii, 239; ix, 45; xiv, 7, 10. ----, ----, in Maryland, xxvii, 18. ----, hematite or brown, in Vermont, iii, 57; iv, 23; v, 249. ----, ----, in Massachusetts, iv, 285; v, 269; viii, 55; xxii, 54. ----, ----, in R. Island, iv, 285. ----, ----, in Connecticut, ii, 209, 212, 216; vi, 208; viii, 260; xix, 322; xxxiii, 156. ----, ----, in New York, i, 144; iv, 47. ----, ----, in Pennsylvania, i, 236; xiv, 14. ----, magnetic, igneous origin indicated by jointed structure, xli, 173. ----, ----, connection with trap dikes, _E. Emmons_, xl, 81. ----, ----, at Mount Etna, xxx, 186. ----, ----, in New Hampshire, xviii, 130. ----, ----, in Vermont, iii, 76; vi, 232. ----, ----, in Massachusetts, i, 115, 344; v, 269; vi, 208; vii, 255; viii, 55; ix, 43; x, 13, 18; xxii, 52. ----, ----, in Rhode Island, (native magnet) iv, 285; v, 402. ----, ----, in Connecticut, v, 41; viii, 259; xxxiii, 155; xlvi, 365,^f (distorted crystal.) ----, ----, in New York, iv, 48; v, 28; ix, 41, 252; xxv, 350; xl, 81. ----, ----, in Pennsylvania, viii, 238; x, 219; xiv, 10, 18. ----, ----, in Maryland, xviii, 81. ----, ----, in Canada, viii, 75. ----, micaceous, in Vermont, iii, 76; vi, 208, 233. ----, ----, in Massachusetts, i, 115; iv, 53; vi, 27, 207, 233, 248; xxii, 53. ----, ----, in Rhode Island, viii, 231, 232. ----, ----, in New York, xxv, 350. ----, ----, in Pennsylvania, iv, 4; viii, 238. ----, ----, in Virginia, iii, 232. ----, phosphate of, Cornwall, analysis of, vii, 369. ---- pyrites, cause of decomposition of, xix, 387. ---- ----, specific gravity of, xix, 388. ---- ----, occurrence of, in fossiliferous rocks, xxxi, 74. ---- ----, in New Hampshire, xviii, 129, 131. ---- ----, in Vermont, i, 115; vi, 245. ---- ----, in Massachusetts, viii, 54; x, 18; xxii, 51. ---- ----, in Rhode Island, viii, 199. ---- ----, in Connecticut, i, 49; v, 44; vii, 56; x, 13; xxxiii, 160. ---- ----, in New York, v, 12, xix, 224; xxv, 350; xxviii, 172^f; xlvi, 36.^f ---- ----, in Pennsylvania, iv, 4; viii, 239; x, 222; xiv, 5, 6, 8, 13. ---- ----, in Ohio, xvi, 156. ---- ----, in New Jersey, v, 28. ---- ----, in Maryland, xviii, 80. ---- pyrites, in North and South Carolina, iii, 3; v, 262; xli, 183. ---- ----, in Alabama, xxiv, 9. ---- ----, in Canada, viii, 75. ---- ----, in Nova Scotia, xv, 213. ---- sand, in Massachusetts, i, 115. ---- ----, in Connecticut, vi, 232. ---- ----, in Canada, viii, 75. ----, silicate of, Bodenmais, xviii, 164. ----, specular, association of, in Jefferson and St. Lawrence Cos., _E. Emmons_, xl, 81. ----, ----, of volcanic origin, theory of formation of, _G. Bischof_, xxxvi, 237. ----, ----, ibid, _Mitscherlich_, xxxvi, 237. ----, ----, in Canada, viii, 76. ----, ----, in Maine, x, 17. ----, ----, in Massachusetts, i, 115, 438. ----, ----, in New Hampshire, xviii, 131. ----, ----, in New York, iv, 250; xxi, 329; xl, 81. ----, ----, in Pennsylvania, iv, 4; xiv, 9. ----, ----, in Rhode Island, ix, 46. ----, sulphate of, in Massachusetts, i, 115; viii, 56. ----, ----, in Connecticut, v, 36; viii, 260; x, 13. ----, ----, in New York, iv, 250; xv, 243. ----, ----, in New Jersey, v, 265. ----, titanic, near Baltimore, Maryland, _T. G. Clemson_, xvii, 42.

Irradiation, notice of _B. F. Joslin's_ memoir on, xxvii, 389.

Ischil, salt mines of, xxix, 225.

Islands, floating, _A. Pettengill_, xii, 122. ----, sudden formation of, from volcanic action, _G. Bischof_, xxxvi, 267. ----, volcanic, near Sicily, thrown up, xxi, 399.^f

Isomeric compounds, xix, 383. ---- bodies, _J. J. Berzelius_ on, xxvi, 178.

Isomerism, remarks on, xxviii, 356.

Isomorphism, _H. Kopp's_ views on, xlvi, 369. ----, exceptions to the law of, xxxv, 302.

Isopyre, analysis of, xv, 388.

Italy, see _Vesuvius_ and _Volcano_.

_Ives, A. W._, chemical examination of hop, ii, 302.

_Ives, Eli_, on a species of Limosella, i, 74. ----, on the amount of nutritious matter afforded by an acre of land cultivated with potatoes or wheat, i, 297. ----, new species of Asclepias, i, 252.^f ----, on spring pasture, iii, 355.

Ivory paper, iii, 370. ----, vegetable, xlix, 400.

J.

_Jackson, C. T._, analysis of mineral waters from the Azores, xxxi, 94, 96. ----, ---- of the serpentine marble of Vermont, xxxviii, 198. ----, ---- of meteoric iron from Claiborne, Alabama, xxxiv, 332; xlviii, 145. ----, ---- of Catlinite, xxxv, 388; xxxvii, 393. ----, composition of some kinds of grains, xlv, 339. ----, on the copper and silver of Kewenaw Point, Lake Superior, xlix, 81. ----, remarks on drift, xlv, 320. ----, geology and mineralogy of a part of Nova Scotia, xiv, 305^f; xv, 132^f, 201. ----, on certain portions of the geology of Maine, xxxiv, 69. ----, geological reports on Maine, noticed, xxxii, 193; xxxv, 387; xxxvi, 143; xxxvii, 376. ----, ---- ---- on N. Hampshire, xli, 383; xlviii, 393; xlix, 27. ----, on the geology of Maine and the public lands, review of, xxxvi, 143. ----, on geological specimens and surveys, xxx, 203. ----, notice of some metamorphic rocks in New Hampshire, xlv, 145. ----, organic matters in soils, xlv, 337.

_Jacobi_, on electro-magnetism as a moving power, xl, 339.

_Jameson's_ Mineralogy, announced, ii, 167.

_Jarman, T._, on gas lights, iii, 170.

Jasper in Canada, viii, 64. ---- in Connecticut, v, 36. ---- in Massachusetts, i, 113, 343. ---- in Mississippi valley, iii, 71. ---- in New Jersey, ii, 197. ---- in North Carolina, v, 261.

Jaundice, use of phosphoric acid in, iv, 162.

Java, native sulphur of, i, 58. ----, sulphuric acid of, i, 58.

Jeffersonite, analysis of, v, 402. ----, identity of, with pyroxene, _H. Seybert_, vii, 145.

_Jenyns, L._, notice of the works of, xxxvii, 165.

Jewelry, composition of the powder used in giving the fine color to gold, xii, 188.

_Johnson, E. F._, canal surveys in the state of New York, xxiv, 19.^f ----, on the height of the mountains of New York, xxxvii, 84. ----, on the present mode of conducting land surveys in the U. States, xix, 131. ----, on the epicycloid, xxi, 280.^f

_Johnson, S. L._, ascent of Mt. Etna, xxvi, 1.

_Johnson, W. R._, economy of fuel, in its domestic applications, xxiii, 318.^f ----, electricity, experiments in, xxv, 57. ----, heating power of various coals, xlix, 166, 310. ----, heat and vapor, inquiries respecting, xxi, 304. ----, method of determining and calculating the specific heats of certain solids, xxvii, 267. ----, huaco a remedy for hydrophobia, xxiv, 279, 388. ----, confirmatory notice of the medical virtues of guaco, xxvii, 171. ----, iron from the Adirondack iron works, experiments on two varieties, xxxvi, 94.^f ----, iron ore and coal of Pennsylvania, analyses of, xxxviii, 382. ----, on the coal field of Carbon creek, xxxix, 137. ----, iron spikes, experiments on the adhesion of, in different kinds of timber, xxxii, 34.^f ----, rotascope, description of, xxi, 265.^f ----, rotation of liquids of different specific gravities, placed upon each other, xxvii, 84.^f ----, on the rapid production of steam in contact with metals highly heated, xix, 292; xx, 308, 418. ----, action between water and hot iron, xxi, 71.^f ----, description of a steam pyrometer, xxii, 96.^f ----, the strength of cylindrical steam boilers, xxiii, 68. ----, notice of an ancient American utensil, xxiii, 65.^f

_Johnston, J._, improved air pump, xxxiv, 86.^f ----, apparatus for solidifying carbonic acid, xxxviii, 297^f; xlii, 203. ----, new crystals of beryl, from Middlelown, xl, 401.^f ----, on a large crystal of columbite from Middletown, Ct., xxx, 387.^f ----, sketch of the early history of Count Rumford, xxxiii, 21. ----, on shrinkage marks in sandstone, xlv, 315.

_Johnston, J. F. W._, blank form for statistical information on chemical education, xxxi, 414. ----, work by, on agriculture, noticed, xlii, 187.

Joints in rocks, _W. W. Mather_, xli, 172.

_Jones, A._, steamboats protected from lightning, xxii, 106. ----, on hail storms, xxiii, 35.^f

_Jones, G._, on the use of anthracite in blacksmith shops, xviii, 303. ----, remarks on prairies, xxxiii, 226. ----, Naval Sketches, citation from, xvi, 168, 320.^f ----, excursion to Cairo, &c., xxxi, 412.

_Jones, W. G._, description of a new compensating pendulum, xxxviii, 274.^f

_Joslin, B. F._, on the atmospheric origin of the Aurora, xxx, 390; xxxv, 145. ----, polarity of crystals indicated by rotation, while forming, as seen under solar microscope, xxxv, 150. ----, on the tails of Halley's comet, xxxi, 142, 324. ----, electro-magnetic apparatus, xxi, 86.^f ----, on the causes of the earth's magnetism, xix, 398. ----, memoir on irradiation noticed, xxvii, 389.

Journals of Science, remark on British and American, xxvi, 174.

Journey, scientific, by _Seiber_, in Abyssinia, announced, iv, 383.

Juncus cylindricus, xlii, 83. ---- Greenei, xlv, 37.

Juniperus repens, iv, 69.

Jussieua tenuifolia, v, 294.

Justicia lætivirens, xlv, 176.

K.

Kaatskill mountains, see _Catskill_.

_Kain, J. H._, on the mineralogy and geology of part of Virginia and Tennessee, i, 60. ----, mounds and caves in Tennessee, i, 428. ----, hurricane at Shelbyville, Tenn., June, 1830, xxxi, 252.

Kakodyl, _Bunsen_, xli, 51; xlii, 324.

Kalmia cuneata, xxvi, 314.

Kamschatka, notice of, xvii, 30.

Kaolin, bed of, in Chester Co., Penn., xiv, 7. ----, in Maryland, xxvii, 19. ----, in New Jersey, ii, 368. ----, in North Carolina, v, 6.

_Karsten_, experiments by, on the formation of "images of Möser," xlv, 228.

Katahdin mountain, excursion to, _J. W. Bailey_, xxxii, 20.^f ----, height of, xxxii, 31.

_Keely, G. W._, on the resistance of fluids, xxviii, 318.^f

_Kelley, E. G._, geological features of Hawaii, xl, 117.^f

_Kellogg, E._, on the passage of lightning, ix, 84.

Kenawha gas, J. A. Lewis, xlix, 209. ---- river and valley, _S. P. Hildreth_, xxix, 83, 87. ----, climate of, xxix, 89. ---- brines, xviii, 260; xxiv, 51, 66; xxix, 84, 113.

_Kendall, E. O._, on the comet of 1843, xlv, 188.^f

_Kendall, T._, Halo at New Lebanon, a notice of, vii, 337.^f ----, improvements in the surveyor's compass, xix, 337.^f

_Kent, E. N._, new process for preparing gallic acid, xlvi, 78.

Kentucky, fossil bones at Big Bone Lick, xviii, 139. ----, ---- ibid, report on, by Messrs. Cooper, Smith and De Kay, xx, 370. ----, geology of the region near Louisville and Shippingsport canal, _I. A. Lapham_, xiv, 65.^f ----, caves in, containing nitre, viii, 323. ----, marbles of, iii, 234.

Kerolite, xviii, 391. ---- of Westchester, N. Y., analysis of, xlvi, 34.

Kilauea, Hawaii, notice of volcano of, xi, 1, 362; xvi, 345. ----, ----, ibid, _C. S. Stewart_, xx, 228. ----, ----, ibid, _J. Goodrich_, xxv, 199. ----, ----, ibid, _E. G. Kelley_, xl, 117.^f

_King, A. T._, footprints in Westmoreland Co., Pa., xlviii, 217, 343^f; xlix, 216.^f ----, on a halo, xl, 25.^f

_King, H._, on the geology of the valley of the Mississippi, xlvii, 12 8.

Kinic acid, detection of, _J. Stenhouse_, xlix, 391.

Kirkdale caverns, bones of, &c., examined by _W. Buckland_, viii, 158, 317.

_Kirtland, J. P_., on the sexual characters of the Naiades, xxvi, 117.^f ----, habits of the Naiades, xxxix, 164.^f ----, miscellaneous notices in Ornithology, xl, 19. ----, notice of, xxxi, 22.

Kite, for electro-meteorological observations, xxxii, 304.^f ----, for communicating with stranded vessels, x, 184.

_Kobell, F. von_, on galvanography, xlviii, 221.^f

Kobresia filiformis, xxix, 253.^f ---- globularis, xxix, 253.^f

_Kœnig's_ transparent paintings, ii, 348.

_Kopp, H._, on isomorphism, xlvi, 369.

_Kuhlmann_, on the use of sulphate of copper, alum, &c. in the making of bread, xx, 269.

Kunker, a tufaceous deposit in India, _Newbold_, xlix, 398.

Kurile Islands, xvii, 32.

Kyanite, analysis by _C. H. Rockwell_, xlvi, 383. ----, compared crystallographically with Sillimanite, _C. U. Shepard_, xii, 159.^f ----, in Connecticut, i, 352; ii, 238; vi, 219; vii, 253; xviii, 361. ----, in Massachusetts, i, 114; vi, 219; vii, 255; ix, 252; xiv, 216. ----, in New Hampshire, v, 40. ----, in New York, vi, 364. ----, in Pennsylvania, v, 41; ix, 246; x, 220, 222; xiv, 8, 12, 14, 18. ----, in Rhode Island, v, 403. ----, in Vermont, vi, 219, 245, 249.