---- ----, remarks on its solvent power on metals, _Millon_,
xlvii, 191.
---- ----, _J. Liebig's_ new test for, xvii, 176.
---- ----, ibid, _J. W. Bailey_, xxxii, 85.
---- ----, effect on sulphuretted hydrogen, viii, 375.
---- ----, action of, on certain metals, xxxiii, 286.
---- ----, action of, on iodine, xxi, 376.
---- ----, fumes, use of, in pulmonary diseases, xxxvi, 191.
---- ----, eyes of insects reddened by, xxx, 196.
---- ----, and phosphorus, explosion from, xvi, 366.
---- ether, process for, _R. Hare_, xxxiii, 241.^f
Nitrification, theory of, xiv, 385.
Nitrogen, abstracted from the atmosphere by organization, geological
proofs of, _L. Vanuxem_, xii, 84.
----, different modes of obtaining, xxviii, 360.
----, apparatus for procuring, _R. Hare_, xiv, 356^f; xxviii, 263.^f
----, mode of preparing, xlix, 195.
----, specific gravity of, xxxv, 298.
----, on the office of, in respiration, _L. C. Beck_, xviii, 52.
----, reduction of metals by, xix, 371.
---- in animal substances, researches relative to, _Macaire_ and
_Marcet_, xxiii, 384.
---- ---- ibid, on the determination of, xxviii, 134.
---- ---- ibid, _Bunsen's_ method of estimating, xli, 53.
---- ---- ibid, new method of determining, _Varrentrapp_ and _Will_,
xlii, 253^f; xlv, 267.
----, combines with iron and copper, xxiv, 374.
----, phosphuret of, xxviii, 140.
----, combined with boron and silicon, forming combinations analogous
to cyanogen, xlvii, 192.
----, chloride of, properties of, _G. S. Serullas_, xviii, 155.
----, new compounds of, (Mellon, Melam, &c.) _J. Liebig_, xxix, 371.
----, gas at Hoosic, N. Y., xv, 234.
----, formation of, in warm springs, _C. Daubeny_, xx, 383.
----, springs in New York, analysis of, xxxvi, 7.
---- ----, see _Springs_.
Nitroline, analysis of, xlix, 204.
Nitrous atmosphere of Tirhoot, xx, 199.
---- ether, new process for, _R. Hare_, ii, 326.^f
---- gas, theory of the action of, in eudiometry, _J. F. Dana_,
vii, 338.
---- oxide, effects of, v, 194.
---- ----, condensation of, vii, 355.
---- ----, method of obtaining, _R. Hare_, xvi, 295, 297.^f
----, ----, properties and composition of, xvi, 298.
_Nobili, L._, new thermo-electric piles of, xxviii, 397.
---- and _Melloni_, new experiments on heat, xxiii, 185.
_Noggerath_, on compression of air, xvii, 38.
Nomenclature of minerals, i, 45.
----, chemical, _J. J. Berzelius on_, xxii, 248;--(letter) xxxii, 262.
----, ----, _R. Hare_ on, xxvii, 63; xxxii, 259; xlix, 249.
----, ----, _W. Whewell_ on, xxi, 369.
---- of numbers from ten to twenty, xlvi, 215.
---- of the stars, revision of, under the direction of the
British Association, xxxviii, 94; xl, 310; xlii, 147; xliv, 158.
----, zoological, _A. A. Gould_, xlv, 1.
----, ----, remarks on, _S. S. Haldeman_, xlvi, 18.
---- of the Palæozoic strata of the Appalachian basin, xlvii, 154.
_Nooney, J._, on the astronomical operations at Pulkova Observatory,
xlvii, 88.
Nooth's apparatus, a substitute for, _R. Hare_, i, 410.^f
_North, E._, on fuel, xi, 66.
North America, Report on the Zoology of, xxxi, 343, 356, 376.
North American Medical and Surgical Journal, xviii, 203.
North Carolina, basalt, basaltic dikes ("natural walls") and
petrifactions of, _J. Beckwith_, v, 1.
----, natural walls of Rowan, xiv, 242.
----, mining district of western part, _J. Peck_, xxiii, 1.^f
----, origin and character of the low country, _E. Mitchell_, xiii, 336.
----, red sandstone of, _D. Olmsted_, ii, 175.
----, rocks and minerals of, _D. Olmsted_, v, 257.
----, geological survey of, in contemplation, v, 202;--_D. Olmsted's_
Report on the Geology of, noticed, xiv, 230.
----, _J. Dickson_ on the mineralogy and geology of, iii, 1.
----, _T. D. Porter_, ibid, iii, 227.
----, gold, miscellaneous notices of, iii, 3; xvi, 360; xvii, 400;
xlviii, 398.
----, ----, large mass of, ix, 9.
----, ---- mines of, _D. Olmsted_, ix, 5; xiv, 237.
----, ----, on the mines of, _C. E. Rothe_, xiii, 201.^f
----, ----, on the region of, _E. Mitchell_, xvi, 1.^f
----, remarks on, _J. Peck_, xxiii, 1.^f
----, ----, on the nature of the deposits of, _F. L. Smith_, xxxii, 130.
----, ----, talcose slate, the rock of, _A. Eaton_, xviii, 50.
----, heights of several mountains in, with remarks on their features,
(Table Mountain, Roan, Black, Grandfather, Yeates's Knob, Pilot,)
_E. Mitchell_, xxxv, 377.
----, temperature of wells and springs, xxxv, 379.
North magnetic pole, revolution of, around the north pole of the earth,
xxix, 352.
North pole and northwest passage, i, 101.
Northern Antiquaries, Society of, xlii, 214.
Northern lights, see _Aurora Borealis_.
Northwest passage, and Greenland ice, i, 101.
---- ----, _I. Lea_, x, 138.
_Northrop, B. F._, fluid in hornstone, vii, 283.
_Norton, W. A._, Treatise on Astronomy by, noticed, xxxvi, 197.
----, on the tails of comets, xlvi, 104.^f
_Norton, J. P._, analysis of Sillimanite, xlvi, 382.
Notices of books, see _Works_.
Nova Scotia, short notice of the minerals of, xii, 176.
----, mineralogy of, _F. Alger_, xii, 227.
----, geology and mineralogy of, _C. T. Jackson_ and _F. Alger_,
xiv, 305, with a map; xv, 132^f, 201; xxii, 167.
----, fossils in the iron ore of, xv, 201.
----, scientific excursions to, from Williams College, with an account
of the minerals and geology of, xxx, 330.^f
----, fossils and fossil wood of, xxx, 339.^f
----, grindstones, xv, 148; xxx, 338.
----, coal, bituminous, xv, 149.
----, fossil trees, upright in the coal strata of, xlv, 353.
----, gas, from the coal mine of, xxx, 184.
----, coal and gypsiferous formation of, xlv, 356.
Novaculite, or whetstone of North Carolina, v, 262; xiv, 238.
---- in Georgia, xvi, 185.
---- in Ohio, xvi, 374.
---- of Lake Memphremagog, Canada, v, 41, 406.
Nucula, see under ZOOLOGY, _Mollusca_.
_Nugent_, geology of some West India Islands, i, 140.
_Nulty, E._, on formulæ for comets, xxxviii, 160.
Number _five_, the most favorite of nature, xvi, 172.
Numbers, interesting properties of, _G. R. Perkins_, xl, 112.
----, analysis of square, _A. D. Wheeler_, xxv, 87.
Numerical faculties, theory of, vii, 285.
Nutation, new determination of, _Peters_, xlvii, 90.
Nutmeg, in Singapore, xliv, 153.
Nutriment of gelatine, xxii, 197.
Nutritious matter from an acre of land cultivated with potatoes or
wheat, _Eli Ives_, i, 297.
_Nutt, R._, on the origin and extension of prairies, xxiii, 40.
----, observations on the lower part of the Mississippi valley,
xxiii, 49.
_Nuttall, T._, plants collected in East Florida, v, 286.
----, serpentine rocks of Hoboken, iv, 16.
----, observations and geological remarks on the minerals of Patterson
and the valley of Sparta, N. J., v, 239.
----, reply to _H. Seybert_, vi, 171.
----, Botany of, noticed, xiii, 99.
----, proposed work on birds, xx, 154.
----, ---- ----, noticed, xxii, 178.
----, North American Sylva, noticed, xliv, 194.
O.
Obesity, xxii, 194.
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.