Part 26

Obituary of Adam Afzelius, xxxiii, 211. ---- J. Aldini, xxvii, 405. ---- Duke of Atholl, xx, 307. ---- R. Bakewell, xlv, 403. ---- D. H. Barnes, xv, 401. ---- Mark Beaufoy, xxviii, 340. ---- John, Duke of Bedford, xl, 219. ---- Andrew Bell, xxiii, 370. ---- E. T. Bennet, xxxii, 215. ---- J. Bentham, xxiii, 370. ---- Sir Charles Blagden, ii, 344. ---- J. F. Blumenbach, xl, 219. ---- Bode, xv, 177. ---- E. Boethor, of Paris, v, 180. ---- C. Bonnycastle, xl, 375. ---- C. V. de Bonstetten, xxiii, 370, 371. ---- Camille Borghèse, xxiii, 370. ---- N. Bowditch, xxxiv, 220; xxxv, 1.^f ---- G. T. Bowen, xv, 403. ---- S. Breislak, xii, 192. ---- Henry Browne, xx, 307. ---- Archibald Bruce, i, 299.^f ---- Carreno, xliii, 215. ---- G. L. J. Carre, xxiii, 371. ---- Angelo Cesaris, xxiii, 370. ---- J. F. Champollion, xxiii, 371. ---- J. A. Chaptal, xxvi, 127. ---- Chenevix, xx, 305. ---- G. Chilton, xxxi, 421. ---- Chladni, xv, 177. ---- Sheldon Clark, xli, 217.^f ---- J. F. Coindet, xxvii, 404. ---- Condorcet, widow of, vii, 200. ---- Corvisart, of Paris, v, 179. ---- G. Crabbe, xxiii, 370. ---- Wm. Cristy, xl, 219. ---- Allan Cunningham, xl, 219. ---- R. Cunningham, xxxii, 215. ---- G. Cuvier, memoir of, xxiii, 303, 371. ---- Sir Humphrey Davy, xvii, 157^f; review of the labors of, 217. ---- B. Dearborn, xxxviii, 154. ---- A. P. De Candolle, xlii, 217; xliv, 217. ---- R. L. Desfontaines, life and writings of, xxvii, 201. ---- Alberic Deville, xxiii, 371. ---- Simeon Dewitt, xxvii, 395. ---- David Don, xliii, 214. ---- A. Doolittle, xxii, 183. ---- David Douglas, xxx, 196. ---- Auguste Duvau, xxiii, 371. ---- Amos Eaton, xliii, 215. ---- J. P. Emmet, xliii, 404. ---- J. Esmark, xl, 220. ---- Martin Field, xxvi, 204. ---- A. M. Fisher, v, 367.^f ---- Fourier, xx, 174. ---- J. Frauenhofen, xv, 177; xvi, 304. ---- Fresnel, xv, 177. ---- Fuss, xv, 177. ---- Evariste Gallois, xxiii, 371. ---- George Gibbs, xxv, 214. ---- Davies Gilbert, xl, 219. ---- C. Vidua le Gonzano, xxiii, 198. ---- John Gorham, xvi, 400. ---- Prof. Gouan, of France, v, 179. ---- Guillemin, xliii, 214. ---- Frederick Hall, xlv, 404. ---- R. Harlan, xlvi, 216. ---- R. J. Haüy, viii, 362. ---- Sigismund Hernbstadt, xxvi, 402. ---- Frederick Hoffman, xxxiii, 76. ---- Hosack, xxix, 395. ---- François Huber, xxiii, 117. ---- Baron Jacquin, xl, 219. ---- Patrick Keith, xl, 219. ---- George Knox, xv, 189. ---- Don Mariano Lagasca, xl, 219. ---- J. L. Lagrange, xxx, 64; xxxi, 97. ---- Marquis de la Place, xiii, 166; xxv, 1. ---- Lambert, xliii, 214. ---- P. A. Latreille, xxv, 431. ---- Thomas Lawrence, xx, 308. ---- L. Lederer, xliv, 216. ---- Leroux, xxiii, 371. ---- C. Linnæus, xxv, 151. ---- James H. Linsley, xlvi, 216. ---- Martin Lister, xxxvii, 136. ---- Littrow, xl, 220. ---- Wm. Maclure, xxxix, 212; xlvii, 1.^f ---- Sir J. Mackintosh, xxiii, 370. ---- Jared Mansfield, xviii, 208. ---- E. P. Mason, xl, 407; xliii, 381. ---- Wm. Meade, xxv, 215. ---- Prof. Meyen, xl, 219. ---- J. S. Miller, notice of, xx, 300. ---- S. L. Mitchill, xxvii, 149. ---- F. Mohs, xl, 220. ---- Boissel de Monville, xxiii, 371. ---- John Murray, ii, 355. ---- Næff, xxiii, 370. ---- J. N. Nicollet, xlv, 404; xlvii, 139. ---- H. W. M. Olbers, xxxix, 387. ---- B. Oriani, xxv, 186. ---- T. Ornie, xxiii, 370. ---- T. Pennant, xxxvii, 146. ---- Persoon, xxxii, 215. ---- H. Pestalozzi, xiii, 183. ---- William Phillips, xv, 160. ---- M. A. Pictet, x, 179. ---- S. D. Poisson, xl, 220. ---- J. Priestley, xxiv, 28. ---- J. Prince, xxxi, 201.^f ---- C. S. Rafinesque, xl, 221. ---- Ramond, xv, 177. ---- Reichenback, xv, 177. ---- Abel Remusat, xxiii, 371. ---- James Rennell, xx, 304. ---- Stephen Van Rensselaer, xxxvi, 156. ---- La Rochefoucald-Liancourt, xiii, 167. ---- Rodrigues, v, 193. ---- Count Rumford, xix, 28; xxxiii, 21. ---- Thomas Say, xxvii, 393. ---- Scarpa, xxv, 184. ---- L. D. de Schweinitz, xxvi, 218. ---- Schubert, xv, 177. ---- G. S. Serullas, xxiii, 371. ---- Charles Silvertop, xl, 220. ---- Nathan Smith, xvi, 211. ---- Wm. Smith, xl, 219. ---- Smithson, xx, 306. ---- L. Simond, xxxii, 371. ---- G. Spurzheim, xxiii, 356. ---- Sir John St. Aubyn, xl, 220. ---- M. F. de St. Fond, ii, 352. ---- Edward Thomas, xxii, 380. ---- Sir Benjamin Thomson (Count Rumford), xix, 28; xxxiii, 21. ---- John Trumbull, xlvi, 216. ---- Edward Turner, xxxii, 213. ---- Vaucher, xliii, 215. ---- Benjamin Vaughan, xxix, 395. ---- Vigors, xl, 219. ---- Vogel, xliii, 215. ---- Alexander Volta, xv, 67. ---- Eli Whitney, xxi, 201.^f ---- F. P. Wilmsen, xxii, 380. ---- Wollaston, xvi, 216; xvii, 159. ---- Thomas Young, xxii, 232. ---- F. X. Baron de Zach, xxiv, 194.

Observatory, a new Astronomical, at Berne, in Switzerland, vii, 374. ----, letter on, from _Encke_ to _A. D. Bache_, xxxviii, 184. ----, at Cape of Good Hope, xxxviii, 95. ----, near Glasgow, xl, 344. ----, at Geneva, xxiii, 390. ----, at Rome, xliv, 373. ----, at Pulkova, astronomical operations at, xlvii, 88. ----, at St. Petersburg, a new, xxviii, 200. ----, at Havana, xlii, 153. ----, remarks on certain, (Cambridge, Brussels, Calton Hill at Edinburgh,) xxviii, 67, 69. ----, United States, Cambridge, xlv, 224. ----, ----, at Girard College, authorized, xxxviii, 398. ----, ----, in Philadelphia, in Rittenhouse Square, xl, 375. ----, ----, of Hudson, Ohio, Western Reserve College, _E. Loomis_, xxxix, 361. ----, ----, of Yale College, latitude and longitude of, xxxiv, 309. ----, instruments proper for a small, xxxviii, 185. ----, magnetical, at Dublin, xxxiv, 3. ----, ----, establishment of, recommended by the British Association, xxxviii, 108.

_O'Brien, L._, on a case of transpiration, xxxix, 400.

Obsidian, West Indies, i, 237. ----, used for cutting instruments by the Mexicans, xvi, 161.^f

Occultation of Aldebaran, July, 1830, xix, 170.

Ocean, natural history of, v, 128. ----, color of, vi, 198; xxix, 237. ----, ----, cause of, xvii, 170; xxvi, 65.^f ----, depth of, v, 130; xl, 407. ----, ----, not determined from the echo, xxxviii, 160. ----, temperature in different parts v, 129; xxv, 130. ----, ---- and saltness of, at different depths, xxiii, 10. ----, ---- at great depths, xvii, 295. ----, ---- ibid, _Foster's_ observations, xvii, 299. ----, ---- ibid, _Irving's_ observations, xvii, 299. ----, ---- ibid, _Scoresby_ and _Buchan_, xlv, 139, 140. ----, ----, between New York and Rio, 1834, xxix, 237. ----, saltness of, _H. Humphreys_ xlix, 208. ----, ----, remarks on, v, 131. ----, ----, at different depths xxiii, 10. ----, pressure of, at great depths, xiv, 194. ----, deep soundings in, by the French ship Venus, xl, 407. ----, phosphorescence of, v, 133; xvii, 209; xviii, 166, 187; xxxvi, 208. ----, supposed effects of, on the features of western New York, during its elevation, xxxv, 86. ----, see _Sea water_.

Oceanic currents, v, 132. ---- ----, of the Atlantic, iv, 390. ---- ----, of the Gulf Stream, v, 133, 353. ---- ----, general remarks on, _W. C. Redfield_, xxv, 130; --circuit currents of the Atlantic and Pacific, 130, 131; cold polar currents flowing beneath the tropical, and carrying icebergs into the Gulf Stream, 131; their influence on climate, 133. ---- ----, tidal, course of, in the Atlantic, _W. C. Redfield_, xxviii, 313. ---- ----, Gulf Stream, relation of, to an opposite current on the North American coast, _W. C. Redfield_, xxxii, 349. ---- ----, Gulf Stream, icebergs carried into, by the deeper polar current, _W. C. Redfield_, xxxii, 351, 352; --lower temperature on shoals and shores due to the submarine current, 353. ---- ----, prevailing, and observations on tides, _W. C. Redfield_, xlv, 293. ---- ----, on ancient polar, _W. C. Redfield_, xliii, 152. ---- ----, effects of polar, _W. C. Redfield_, xlv, 326. ---- ----, of the north Atlantic and the drift ice, with a map, _W. C. Redfield_, xlviii, 373. ---- ----, Gulf Stream, existence of, determined by _B. Franklin_, xlvii, 162. ---- ----, ---- ----, remarks on, _M. F. Maury_ xlvii, 161; --warmth of, 162; course, color, 164; relation of amount of waters to waters of Mississippi, 165; causes of, 165; evidence from bottles thrown overboard, 167; temperature of, 175; cold northern currents, 177; Japan currents, 181. ---- ----, tidal, see farther under _Tides_.

Ochres, in Connecticut, v, 36. ----, in Vermont, iii, 58; iv, 43.

Odessa, notice of, vi, 386.

Odontograph, xxxv, 319.

Odors affected by electricity, xv, 394.

Odor, like Benzoin, from a man's arm, xxii, 368. ---- of wines due to œnanthic ether, xxxii, 381.

Œnanthic ether, xxxii, 381. ---- acid, xxxii, 382.

_Œrsted, H. C._, on water-spouts xxxvii, 250.^f ----, on tornadoes, xxxviii, 82. ----, allusion to discoveries electro-magnetism, v, 388.

Oerstedite, xxx, 179. _Ogden, H. W._, on water-spouts, xxix, 254.

Ohio, notes on, i, 207, 311. ----, Medical College of, i, 311. ----, Belmont Co., scenery, geology, mineralogy, botany, &c., of, _C. Atwater_, i, 226. ----, winds of, _C. Atwater_, i, 276. ----, vegetable impressions in the coal strata of Zanesville, _E. Granger_, iii, 5.^f ----, facts relating to certain parts of, _S. P. Hildreth_, x, 1; --Washington Co., soil, &c., 2; caverns on the Little Hockhocking, 3; limestone and coal, salt borings, 4; gas from springs, 5; petroleum, 5; iron ore, 7; ochres, pyrites, 8. ----, notes on, in reply to inquiries by C. Atwater, _S. P. Hildreth_, x, 152; --Marietta, size, manufactures, &c., 152; county of Washington, statistics, 153; settlement of different places of Ohio, 153, 154, 155; attacks of Indians, 154; escape of R. J. Meigs, 157; Indian Mounds, &c., 160. ----, ibid, _S. P. Hildreth_, xi, 231; --on the plants of, climate, &c., 231; epidemic disorders, influenza, &c., 233; diseases of cattle, 234; crimes, suicide, 235; education, 235; population of Marietta, 236; sect of Halcyons, 236; antiquities, 237; meteors, 237; storm of May 28, 1809, 238. ----, on the geology, climate, diseases, &c., of, _C. Atwater_, xi, 224. ----, Washington Co., climate and productions of, _S. P. Hildreth_, xii, 206. ----, coal and diluvial strata of, _S. P. Hildreth_, xiii, 38. ----, people of, _C. Atwater_, xiii, 200. ----, miscellaneous notices of rocks and minerals of, _S. P. Hildreth_, xvi, 154. ----, canals, xx, 416. ----, boulders of, _D._ and _I. A. Lapham_, xxii, 300. ----, saliferous rock formation of, _S. P. Hildreth_, xxiv, 46. ----, ten days in, xxv, 217; --Marietta, notice of, 217; Waterford, 221; Morgan Co., 227; Zanesville, 228; Putnam, 230; Muskingum Co., 230; Perry Co., 232; Flint ridge, 233; buhrstone, 233; Tumuli, 234; Somerset, 236; Rushville and Rush Creek, 236; Lancaster, 237; Pickaway Co., 238; Circleville ancient works, 238; Scioto aqueduct, 240; Williamsport, 247; the Barrens, 248; Westport, 249; Chilicothe, 251; Pickaway plains, 255. ----, channels of streams far below the general level, deeply seated, xxv, 223. ----, on the bituminous coal deposits of the Ohio valley, _S. P. Hildreth_, xxix, 1^f; --general topography, 7; Muskingum valley, 9^f; Putnam Hill strata, 30^f; cannel coal, 39; calcareous breccia, 43; Hockhocking valley, 46; buhrstone, 142. ----, miscellaneous notices of, _S. P. Hildreth_, xxxi, 1; --steamboats, 1; Sun-fish creek, 2; grave creek, bituminous coal, Wheeling and Indian attacks, 3; Wellsburg, Steubenville, 6; Judge Tappan's cabinet, 7; ancient Indian sculpture, 8^f; Mingoes, Logan, Henry Jolly, 10; Mr. Slack's spring garden, 14; Lewis Wetzel, 14; Brady and Brady's Hill, 20, 21; Connecticut Reserve, 21, 34; Poland, Dr. Kirtland's collection of shells, 22; Mahoning valley, tertiary deposits, 24^f; coal deposits, 27; natural mounds, fossil plants, 28^f; massasauga, rattle snakes, 32; gypsum of Canfield, 34; ponds of Portage Co., 35; Lymnæa stagnalis and Helices, &c., 35.^f ----, miscellaneous notices of, _S. P. Hildreth_, xxxi, 1; --Portage Co., 37; Ohio and Pennsylvania canal, 40; Brady's Pond, 42; Falls of the Cuyuhoga, 45^f; travertine, 50; marl beds, 55; mastodon bones at Massillon, 56; Fort Lawrence, 57; village of Zoar, 59; and great ferruginous deposits, 61; Newcastle, coal, 63; Gnadenhutten, 64; Rev. J. Heckewelder, 66; Coshocton Co., 69; narrows of Licking, 70; rock strata, 71; trilobites, 72^f; Delaware sulphur springs, 73; sulphuret of iron, 74; Zanesville, 75^f; cannel coal, 79; cabinet of the Atheneum at Zanesville, 79; fossil bones of ovis, &c., 80.^f ----, Geological Reports of, noticed, xxxii, 190; xxxiv, 196, 347^f; xl, 126. ----, ibid, with extracts, xxxiv, 347; --extent of coal in, 348, 357; degradation on Lake Erie, 349; buhrstone of, 352, 353; iron ore deposits, 357; fossil elephant of Salt Creek, 358, 362.^f ----, Indian mounds and relics, _C. Whittlesey_, xxxiv, 361. ----, hurricane in, Oct. 20, 1837, _E. Loomis_, xxxiii, 368.^f ----, prairies of, xxxiii, 230. ----, cannel coal in, xviii, 376; xxix, 39; xxxi, 79. ----, buhrstone in, xxv, 233; xxix, 142; xxxiv, 353. ----, mastodon remains in, ii, 245^f; xxv, 256; xxx, 394; xxxi, 56; xxxvi, 189.^f ----, heights of various points in,_ C. Whittlesey_, xlv, 12. ----, meteorological observations in, see under _Meteorology_.

Oils, depuration of, xxiv, 200. ----, action of, on oxygen gas, xxiii, 190. ----, bleaching, xlvii, 196. ----, proportion of, in different oleaginous plants, xviii, 150. ---- of balsam copaiva, xxviii, 384.

Oil of cajeput, xxviii, 384. ---- of the Chené, ii, 264. ---- of cinnamon, xxviii, 385, ---- of the Croton tiglium, xiv, 369. ---- from grape seed, ii, 348. ---- of Indian corn, xliii, 403. ----, inflammable, xii, 388. ---- of juniper, xxviii, 385. ----, olive, impurities in, xix, 76. ----, ----, purification of, for chronometers, xx, 166. ---- from the spirit of wine of potatoes, _J. Dumas_, xxviii, 386. ----, essential, of potatoes, xxxii, 382. ---- of Ricinus communis, impurities in, xix, 77. ---- of roses, on the preparation and analysis of, _R. Blanchet_, xxviii, 383. ---- of turpentine, see _Turpentine_. ---- of sweet almonds, impurities in, xix, 76. ---- of the tutui or candlenut tree of the Sandwich Islands, xxxiv, 209. ---- of wine, destructive distillation of, xxxvi, 76. ---- from white fish, xxxv, 391. ----, essential, adulteration of, with alcohol, xix, 77; xlvii, 197. ----, ----, action of, with sulphurous acid, _R. Hare_, xxxi, 281. ----, watchmaker's, best, ix, 202.

Oil-casks, rendered impermeable by glauber salt, xxx, 173.

Oilstone, of Ohio, xvi, 374. ----, of Georgia, xvi, 185. ----, of Lake Memphremagog, v, 41, 406. ----, of North Carolina, v, 262; xiv, 238.

_Olbers, H. W. M._, obituary of, xxxix, 387.

Old man of the Mountain, xiv, 64.^f

Olea Americana, northern limit of, _H. B. Croom_, xxvi, 315.

Oligostachyum, iv, 58.

_Oliver, B. L._, on prussic acid, iii, 182. ----, letter to, on Otaheite, _J. A. Maerenhaut_, xxix, 283. ----, on the use of iodine in gout, xvi, 176.

Olivine from near Naples, _L. P. Walmstedt_ on, ix, 378. ---- and chrysolite, comparative analyses of, xiii, 184.

_Olmsted, D._, red sandstone of North Carolina, ii, 175. ----, geological survey of North Carolina, in contemplation, v, 202. ----, rocks and minerals of North Carolina, v, 257. ----, on the gold mines of North Carolina, ix, 5. ----, Report on the Geology of North Carolina, noticed, xiv, 230. ----, report on the state of chemical science in 1826, xi, 349; xii, 1.^f ----, on the materiality of heat, xi, 356; xii, 359. ----, notice of illuminating gas, from cotton seed, viii, 294; x, 363. ----, on the excessive use of sulphur, viii, 394. ----, meteorological report, for 1827, xiv, 176. ----, ---- ----, for 1828, xvi, 70. ----, on the phenomena and causes of hail storms, xviii, 1.^f ----, on adjusting lightning rods, xviii, 362. ----, reply to A. T. Christie on hail-storms, xx, 373. ----, on the New Haven tornado, July, 1839, xxxvii, 340.^f ----, on the nature and cause of the meteors of Nov. 13, 1833, xxv, 363; xxvi, 132.^f ----, cause of the meteors of November, xxix, 376; xxx, 370.^f ----, meteors of November, 1836, xxxi, 286. ----, ---- ----, 1837, xxxiii, 379.^f ----, ---- ----, 1838, xxxv, 368. ----, ---- ----, 1839, xl, 202. ----, ---- of different periods, xxvi, 132. ----, on the Aurora Borealis, xxix, 388; xxxii, 176. ----, on the Zodiacal light, xxvii, 416; xxix, 379. ----, on the eclipse of the sun, of Sept. 1838, xxxv, 174. ----, report of observations on the transit of Mercury, May, 1845, xlix, 142. ----, new experiments on the solar spectrum, xlviii, 137. ----, a paralytic affection cured by a stroke of lightning, iii, 100. ----, memoir of Eli Whitney, xxi, 201.^f ----, Natural Philosophy of, noticed, xxiii, 351; xxv, 214; xxxiv, 219. ----, Introduction to Astronomy by, noticed, xxxvi, 203. ----, Life and Writings of E. P. Mason, by, noticed, xl, 407; xliii, 381.

Ontario valley, geological features of, xi, 213.^f ---- lake, level of, xxxiii, 122; xlv, 16. ---- ----, temperature of, xxxiii, 403; xxxvii, 242. ---- ----, ridge of, xxxvi, 40. ---- ----, evidences of changes of level about, xxxv, 104; xxxvi, 41; xlvi, 315. ---- ----, small lakes running into, xxxvi, 42. ---- ----, shore of, and height of water in, xxxvi, 43.

Onyx, in Missouri, iii, 71.

Oolitic formation in America, xl, 41. ---- ---- in New York, Orange Co., xix, 398. ---- ---- ----, in Saratoga Co., _J. H. Steele_, ix, 16.^f ---- ---- in Ohio, xlii, 233. ---- fossils, remarks on, xxxiii, 107.

Oology, notice of _W. Hewitson's_ work on, xxxvii, 166.

Opal at Vienna, a large, xii, 384. ---- from the graphite mine of Pfaffenreith, one-third water, xv, 390.

Opelousas, geological notice of xxxv, 344.

Ophisaurus ventralis, i, 262.

Opiamon, xlix, 205.

Opianic acid, xlvii, 196; xlix, 205.

Opiano-sulphurous acid, xlix, 205.

Opium, constitution of, xxviii, 359. ----, mode of detecting minute quantities of, _R. Hare_, xii, 290. ----, observations and experiments on, _G. W. Carpenter_, xiii, 17. ----, English, viii, 389; x, 194. ----, paramorphine in, xxiv, 374. ----, thebaine in, xxx, 379.

Opossum, remains in the Stonesfield slate, xxvii, 412; xxxvii, 228.

Optics, notice of _D. Brewster's_ Treatise on, xxiv, 389.

Optical amusements, xvi, 398. ---- experiment, exhibiting the blood vessels of the eye, xxi, 166. ---- deception, instrument for exhibiting a certain, _E. S. Snell_, xxvii, 310. ---- instruments, xix, 390. ---- properties of saccharine juice, _Biot_, xxiv, 379. ---- structure of minerals, notice of, ix, 384. ---- surgery, xviii, 179. ---- trap, v, 200.

Orang Outang, account of, xv, 161.

Orange County of New York, natural history of, _J. Van Rensselaer_, xiii, 224. ----, mineral notices of, _C. U. Shepard_, xxi, 321.^f ----, ---- ----, _J. Fowler_, ix, 242.

Orangeries, v, 190.

Orchis tribe, synonymy of some species of, _A. Gray_, xxxviii, 306. ---- spectabilis, monstrous flower of, _J. W. Bailey_, xxxv, 117.^f

_Ordinaire, J. J._, method of teaching Latin used by, v, 182; vii, 383. ----, on public instruction, vii, 199, 383.

Oregon, fossil bones from, _H. C. Perkins_, xlii, 136.^f ----, fossil bones from, orycterotherium, &c., _R. Harlan_, xliv, 79. ----, geological and miscellaneous remarks on, _J. Ball_, xxviii, 1. ----, climate of, and a meteorological register kept at Fort Vancouver, 1832, 1833, J. Ball, xxviii, 8.

Orenburg, salt steppe of, xliv, 205.

Orford brown tourmaline, xxxiv, 204.

Organic remains, see _Fossil_.

_Oriani, B._, death of, xxv, 186.

Orientals, style of, v, 181.

Oriental minerals, _F. Hall_, xxxiii, 249.

Ornithichnites, see _Footprints_.

Ornithological terms, improved, xxi, 162.

Ornithology, work on, by _T. Nuttall_, noticed, xx, 154; xxii, 178; xxv, 424. ----, see farther under _Zoology_.

_Orr, I._, on the process of memory, xxiii, 278. ----, on the formation of the universe, vi, 128.^f ----, on infinites, v, 326. ----, mathematical propositions by, xxiv, 395.

Orthite, ix, 376.

Orthocerata, see ZOOLOGY, _Mollusca_.

Orthography, English, proposals for improving, xxxix, 197.

Orycterotherium, xlii, 136^f, 392; xliv, 69^f; xlv, 210. ---- Missouriense, xliv, 69^f; xlv, 210. ---- Origonense, xlii, 136^f; xliv, 79.

_Osborn, M. W._ and _N. S._, on a vibrating dam, xliv, 366.

_Osler, F._, on indications of his anemometer, xxxviii, 103.

Osmelite, xv, 388.

Osmium, atomic weight and compounds of, _E. Fremy_, xlix, 199. ----, method of obtaining, from the platinum residue, _F. Wöhler_, xxvi, 371. ----, means of obtaining pure, _E. Fremy_, xlviii, 185.

Ossification of the vitreous humor, xvii, 186.

Ostræa edulis, remarks on, xxxii, 241. ----, see farther under ZOOLOGY, _Mollusca_.

Ostrich toes, xxxv, 312.

Otaheite, letter on, by _J. A. Maerenhaut_, xxix, 283. ----, contents of _J. A. Maerenhaut's_ work on, xxix, 290.

_Otto_, on the separation of zinc from manganese, xlvii, 194.

Oval arches, tracing of, _E. Miller_, xxii, 303.^f

_Owen, D. D._, on fossil palm trees in Indiana, xlv, 336. ----, on geological coloring and symbols, xlv, 351. ----, on geological paintings and illustrations, xlv, 136. ----, geology of the Western States, xliv, 365; xlv, 151, 163. ----, report on Indiana, notice of, xxxiv, 193; xl, 133. ----, on human footprints in limestone, xliii, 14.^f ----, review of New York Geological Reports, xlvi, 143; xlvii, 354^f; xlviii, 296.^f ----, meteorological notices in Indiana, xxix, 294.

_Owen, Richard, Wollaston_ medal, presented to, xxxv, 197. ----, on the fossil bones collected by C. Darwin, xxxv, 196. ----, structure of fossil teeth, xxxv, 307. ----, on the Megatherium, xxxvii, 371. ----, on R. Harlan's notice of new fossil mammalia, xliv, 341. ----, reply of _R. Harlan_ to, xlv, 208. ----, on the Dinornis, and the Connecticut valley fossil footprints, xlv, 185; xlviii, 194. ----, on the bird's nests of New Holland, xlviii, 61. ----, Report on the Fossil Mammalia of Great Britain, xlvii, 186.

_Owen, Robert_, establishment at New Harmony, x, 165; xi, 188. ----, Plans of Education, &c., ix, 161, 383.

Owhyhee, see _Sandwich Islands_--also under _Geology_ and _Volcanoes_.

Oxahverite, xv, 387, [Apophyllite.]

Oxalates, experiments on certain, xiii, 188.

Oxalate of lime, crystallized in plants, xxi, 372.

Oxalic acid, _Gay Lussac_, xxvii, 400. ---- ether, new product from, _Malaguti_, xl, 215. ---- ---- and chlorine, compound of, xl, 215.

Oxygen, absorption of, by water, ii, 349. ----, abstraction of, from the atmosphere, xii, 91. ----, specific gravity of, xxxv, 298. ----, delicate test of, in a gaseous mixture, xvi, 397. ----, a means of resuscitating from drowning, xvi, 250. ----, respiration of, i, 95. ----, action of oils upon, xxiii, 190.

Oxygenized water, iii, 369.

Oxy-hydrogen blowpipe, see under _Blowpipe_. ---- - ---- illumination in light-houses, xxviii, 355.

Oxyria reniformis, xlv, 29.

Oysters, ancient and modern history of, xxxii, 211. ----, fishery of, xxxii, 245. ----, habits of, xxxii, 244. ----, uses, xxxii, 246.

Ozocerite, new mineral species, xxvi, 388.

Ozone, the cause of the electro-chemical odor, _C. F. Schönbein_, xli, 44. ----, nature and properties of, _F. de Moleyns_, xiii, 318. ----, notice of, xlix, 195.

P.

Pachuca silver mines, xxiv, 231.