Ashes, shower of, at Vesuvius, iii, 374.

----, volcanic, at sea, west of the Philippines, _P. Parker_, xl, 198.

----, of two pines, composition of, xxvi, 182.

----, spontaneous combustion in, _O. P. Hubbard_, xlii, 166.

----, combustibility of, _J. T. Plummer_, xlii, 167; xliii, 80.

----, various properties of, _J. T. Plummer_, xliii, 85.

Asia, geology of the Deccan, xxxiii, 274.

----, Caucasus range and Persia, geology of, mines, salt, naphtha

springs, &c. of, xxxvii, 348.

----, Catacecaumene, xxxiii, 95; xxxviii, 207.

----, shores of Black sea, xxxii, 399.

----, volcanoes of the continent and islands, in a review of _Daubeny_,

xiii, 290.

Asparagin, xx, 187.

Aspartic acid, xvii, 173.

Asparagus, aspartic acid from, xvii, 173.

Asphaltic mastic, xxxiv, 383.

Assafetida, sulphur in, xv, 185.

Association, British, for the promotion of science, plan of, xxi, 373.

----, ----, notice of the meeting in 1832, xxiii, 179;

1833, xxv, 411;

1834, xxviii, 55;

1835, xxix, 347;

1836, xxxi, 332;

1837, xxxiii, 265; xxxiv, 1;

1838, xxxv, 275;

1839, xxxviii, 93;

1840, xl, 308;

1841, xli, 391; xlii, 147;

1842, xliii, 367; xliv, 158, 351;

1843, xlvi, 388; xlvii, 182.

----, ----, notice of Prof. _Whewell's_ address at 11th meeting,

xli, 391.

----, ----, invitation from, to American men of science, xxxviii, 406.

----, scientific, or a Congress of Savans at Berlin, 1828, xvi, 386.

----, ----, in Germany, in 1830, xx, 175.

---- of American geologists in 1840, xxxix, 189;

in 1841, xli, 158;

1842, xliii, 146;

1843, xlv, 135, 310;

1844, xlvii, 94;

1845, xlix, 219.

---- ---- ----, address before, by _E. Hitchcock_, xli, 232.

---- ---- ----, ibid, by _B. Silliman_, xliii, 217.

---- ---- ----, address before, by _H. D. Rogers_, xlvii, 137, 247.

---- ---- ----, constitution and by-laws of, xliii, 149.

---- ---- ----, publication of transactions of, xlv, 220.

Asteroid, see _Shooting star_.

Astronomy, state of, among the Zabians, _J. W. Draper_, xxviii, 203.

----, on the resistance in space to motion of heavenly bodies,

xvii, 389.

----, ibid., _R. W. Haskins_, xxxiii, 1.

----, idea of ether in space, when introduced, xxxiii, 1.

----, theory of _Descartes_, xxxiii, 3.

Astronomical clock, Prof. _Bessel_, xliv, 160.

---- ----, on the stopping of, by _W. Howard_, viii, 277.

---- machine, for representing the motions of the earth and moon,

_E. C. Leedom_, xlii, 338.^f

---- observatory, to be erected at Abo in Finland, iv, 386.

---- observations on Saturn, Jupiter and his satellites, by Prof.

_Struve_, xiii, 172.

---- ---- at the Cape of Good Hope, _Herschel's_, xxxv, 283.

---- ---- and observatory, at Rome, _P. F. de Vico_, xliv, 373.

---- ---- at the observatory of Pulkova, xlvii, 88.

Atlantic steam navigation, _J. Smith_, xxxv, 160.

---- coast, gales of, see under _Winds_.

Atlas, white race of, xxxii, 400.

_Atlee, W. L._, on certain cavities in quartz, xxxv, 139.^f

Atmometer, a new, vi, 382.

Atmosphere, analysis of, _M. Brunner_, xxiii, 280.^f

----, composition of, xvii, 382.

----, on the carbonic acid of, from a memoir by _Saussure_, xvi, 214.

----, quantity of carbonic acid in, xx, 183.

----, carbonic acid in, _W. H. Watson_, xxviii, 71.

----, pressure of, v, 174; xxiv, 174.

----, compression of, in a mine of Bovey coal, xvii, 38.

----, annual movement in, xlii, 158.

----, extent of, _W. C. Redfield_, xxv, 123.

----, height of, at the equator, _J. P. Espy_, xxxix, 120.

----, general view of, _W. C. Redfield_, xxxiii, 50;

average velocity of wind near the surface of the ocean, 52;

temperature of elevation, 52.

----, effect of the rarefaction of, on its desiccation and

refrigeration, xl, 44;

formation of clouds a consequence of, 44.

----, luminous appearance in, iv, 341.

----, Prof. _Lloyd_ on the clearness of, at times, xxxiv, 7.

----, deductions with regard to the moon's influence on, xv, 174.

----, mercurial, iii, 386.

----, temperature of, see _Meteorology_ and _Temperature_.

----, during the coal period, _H. D. Rogers_, xlvii, 105.

----, of the planets, remarks on, xxv, 183.

Atmospheric air, on the dilatation of, _V. Regnault_, xliv, 63.

---- pressure, see _Barometer_.

---- tides, ix, 195.

---- dust, by _C. S. Rafinesque_, i, 397.

---- ----, reply to _C. S. Rafinesque_, ii, 134.

---- currents, see _winds_.

Atomic weights of bodies, _Dr. Thomson_ engaged in determining,

iii, 396.

---- ----, _Turner's_ opinions respecting, xxviii, 70.

---- ----, observations on, Prout's hypothesis of, _J. J. Berzelius_,

xlviii, 369.

---- ----, not multiples of that of hydrogen, xlvii, 187.

---- ---- of lead, sulphur, nitrogen and carbon, _Clark_, xxxviii, 119.

---- ---- of hydrogen, chlorine, potassium, calcium, glucinum, silver,

uranium, cerium and lanthanum, xlvii, 188.

---- ---- of elements, _Marchand_ and _Erdmann_,

--oxygen, hydrogen, carbon, nitrogen, calcium, chlorine, silver,

lead, xliv, 215;

of copper, mercury and sulphur, xlviii, 402.

---- theory, account of, by _J. Finch_, xiv, 24.

Atom, idea of, _J. D. Whelpley_, xlviii, 352.

----, _R. Hare_, on the views of Faraday, xlviii, 247.

----, nature of the crystalline, _J. D. Dana_, xxx, 275.^f

Attraction in liquids, inquiries into the principles of, xvii, 86.^f

----, chemical, modified by quantity of matter, _E. Mitchell_, xvi, 234.

----, magnetic, see _Magnetic_.

_Atwater, C._, prairies and barrens of the west, i, 116.

----, geology, mineralogy, botany, &c. of Belmont Co., Ohio, i, 226.

----, prevailing winds of Ohio and the west, i, 276.

----, on the geology, climate and diseases, &c. of Ohio, xi, 224.

_Audubon_, work on the birds of N. America, xvi, 353.

----, ---- ----, notice of, xlii, 130.

Augite, of Willsboro, New York, analysis of, _H. Seybert_, v, 113.

----, analysis of, _H. Seybert_, vii, 145.

----, in Connecticut, ii, 238; vi, 225; viii, 258; xii, 169.

----, in Maryland, xviii, 79.

----, in Massachusetts, i, 436; vii, 52; viii, 47; ix, 43; xii, 157.

----, in New Jersey, v, 243, 246; vi, 250.

----, in New York, viii, 88; ix, 244, 250; xix, 224; xxv, 347.

----, in Pennsylvania, viii, 239; xiv, 13, 17.

_Augur, H._, an American sculptor, notice of, ix, 173.

Aurora Australis, Pacific, S. lat., 58°, seen by _Capt. Cook_, Feb.,

1773, xviii, 75.

Aurora Borealis, seen in Brit. America, _Capt. Parry_, xiv, 96;

xvi, 148.

---- ---- ----, _Capt. Franklin_, 1820, xxxiv, 289.

---- ---- ----, Sept., 1827, xiv, 105.^f

---- ---- in Canada, Kingston, and elsewhere, _R. H. Bonnycastle_,

Dec. 11, 1835, xxx, 131.^f

---- ---- ---- at Toronto, May 8, 1836, _R. H. Bonnycastle_,

xxxii, 393.^f

---- ---- ---- at Toronto, May, 1840, xl, 337.

---- ---- in Denmark, Sept. 1827, xiv, 107.

---- ---- in Faroe and Shetland, viii, 392.

---- ---- in France, Sept., 1827, xiv, 107.

---- ---- ----, Aug., 1827, xv, 199.

---- ---- ----, Feb. 18, 1837, xxxii, 396.

---- ---- ----, Jan. 7, 1831, xx, 396.

---- ---- ----, April 1837, xxxiv, 285.

---- ---- ----, Oct., 1836, xxxiv, 288.

---- ---- ----, Aug. 19, 1726, xxix, 388.

---- ---- in Great Britain, in 1814, 1816 and 1819, xiv, 96.

---- ---- ----, Aug., 1827, xiv, 95.

---- ---- ----, Gosport, Sept., 1827, xiv, 108.

---- ---- ----, Feb. 18, 1837, London, xxxii, 396.

---- ---- ----, Nov. 1837, xxxiv, 283.

---- ---- ----, from Huxham's Auroral Register, 1728-1748,

_E. C. Herrick_, xxxiii, 297.

---- ---- ----, May, June, July, Aug., 1837, Prof. _Christie_,

xxxiii, 300.

---- ---- ----, September 1839, xxxviii, 264.

---- ---- ----, May, 1840, xl, 338.

---- ---- in Prussia, _M. Feld_, February, 1835, xxxiv, 285.

---- ---- Oswer Zornea, December, 1736, _J. Bowdoin_, xviii, 74.

---- ---- in the U. States, 1741-1757, _J. Winthrop_, xl, 204, 205, 206.

---- ---- ----, November, 1789, Hingham, Mass., _H. Ware_, xxxiv, 204.

---- ---- ----, Aug., 1827, _B. D. Silliman_, xiv, 91.

---- ---- ----, ibid, _L. D. Gale_, xv, 199.

---- ---- ----, March, 1781, xiv, 96.

---- ---- ----, Sept., 1827, _J. Bowdoin_, xviii, 72.

---- ---- ----, 1827-1833, at Wilmington, Delaware, _H. Gibbons_,

xxxiii, 299.

---- ---- ----, Sept., 1829, _L. Feuchtwanger_, xviii, 393.

---- ---- ----, July, 1830, _M. Field_, (Fayetteville, Vt.,) xx, 262.

---- ---- ----, March, 1831, _M. Field_, (Fayetteville, Vt.,) xx, 263.^f

---- ---- ----, April, 1831, Albany, _J. Henry_, xxii, 143.

---- ---- ----, May and July, 1833, _A. D. Bache_, xxvii, 113.^f

---- ---- ----, 1832-1834, N. Jersey, _J. F. Jenkins_, xxvi, 395, 396.

---- ---- ----, Nov., 1835, _D. Olmsted_, xxix, 388.

---- ---- ----, ibid, _A. C. Twining_, xxxii, 227.

---- ---- ----, April, 1836, Emmetsburg, Va., _J. McCaffrey_, xxxi, 85.

---- ---- ----, July, 1837, _E. C. Herrick_, xxxiii, 144.

---- ---- ----, ibid, Rochester, N. Y., _C. Dewey_, xxxiii, 143.

---- ---- ----, Jan., 1837, _D. Olmsted_, xxxii, 176.

---- ---- ----, Nov., 1837, _D. Olmsted_, xxxiii, 393.

---- ---- ----, ibid, _F. A. P. Barnard_, xxxiv, 267.

---- ---- ----, July and August, 1837, Burlington, Vt., _J. Dean_,

xxxiii, 212.

---- ---- ----, Feb., 1837, New Haven, xxxii, 396.

---- ---- ----, September, 1839, xxxvii, 375.

---- ---- ----, ibid, Rochester, _C. Dewey_, xxxviii, 146.

---- ---- ----, ibid, _E. C. Herrick_, xxxviii, 260.

---- ---- ----, ibid, Middlebury, Vermont, _A. C. Twining_,

xxxviii, 376.

---- ---- ----, ibid, Princeton, N. J., _Prof. Alexander_, xxxix, 364.

---- ---- ----, May, 1840, _A. D. Bache_, xl, 48.

---- ---- ----, Nov., 1841, Marietta, Ohio, _S. P. Hildreth_, xlii, 346.

---- ---- ----, April, 1842, _E. C. Herrick_, xliii, 213.

---- ---- ----, May and Aug., 1844, New Haven, _E. C. Herrick_,

xlviii, 319.

---- ---- in summer, Aug., 1827, xiv, 91; xv, 199.

---- ---- ----, Prof. Christie on, xxxiii, 300.

---- ---- ----, _E. C. Herrick's_ citations from Huxham's Auroral

Register, xxxiii, 297.

---- ---- ----, ibid, from H. Gibbons's register, 1827-1833,

xxxiii, 299.

---- ---- ----, from J. Winthrop's register, June, 1746, xl, 206.

---- ---- ----, Aug. 19, 1726, xxix, 388.

---- ---- ----, May, 1840, xl, 48, 338.

---- ---- ----, July, 1830, _M. Field_, xx, 262.

---- ---- ----, July, 1837, xxxiii, 143, 144, 212.

---- ---- ----, August, 1844, _E. C. Herrick_, xlviii, 319.

---- ---- corona, position of, in several auroras, _A. C. Twining_,

xxxii, 227.

---- ---- ----, ----, _Prof. Alexander_, September, 1839, xxxix, 364.

---- ---- ----, ----, _D. Olmsted_, Jan., 1837, xxxii, 177.

---- ---- ----, ----, ibid, Nov., 1835, xxix, 389.

---- ---- ----, ----, _E. C. Herrick_, Sept., 1839, xxxviii, 260.

---- ---- ----, ----, _C. Dewey_, Sept., 1839, xxxviii, 147.

---- ----, needle agitated by, _M. Arago_, xiv, 107; xxxiv, 286.

---- ----, ---- ----, remarks on, xix, 246.

---- ----, ---- ----, Aug., 1827, _L. D. Gale_, xv, 199.

---- ----, ---- ----, Apr., 1831, _J. Henry_, xxii, 143.

---- ----, ---- ----, May and July, 1833, _A. D. Bache_, xxvii, 113.

---- ----, ---- ----, Feb., 1835, _M. Gauss_, xxxiv, 285.

---- ----, ---- ----, Nov., 1835, xxix, 390.

---- ----, ---- ----, April, 1836, _J. McCaffrey_, xxxi, 85.

---- ----, ---- ----, Jan., 1837, xxxii, 179.

---- ----, ---- ----, July, 1837, _E. C. Herrick_, xxxiii, 146.

---- ----, ---- ----, Nov., 1837, _A. B. Haile_, xxxiv, 270.

---- ----, ---- ----, Sept., 1839, _E. C. Herrick_, xxxviii, 261.

---- ----, ---- ----, May, 1840, Canada, xl, 337.

---- ----, wide extent of some, _E. C. Herrick_, xxxiii, 300.

---- ----, remarks on the number in Europe, xxviii, 58.

---- ----, remarks on the nature of, by the Ex-King of Sweden, v, 178.

---- ----, ----, ibid, _Thienemann_, x, 187.

---- ----, ----, ibid, xiv, 97; xvi, 290; xix, 235.

---- ----, ----, ibid, _Hansteen's_ views, xiv, 109.

---- ----, ----, ibid, _Ideler's_ views, xxviii, 289.

---- ----, ----, ibid, _J. Ross_, xxix, 348.

---- ----, ----, ibid, _B. F. Joslin_, attributing it to crystallized

vapor, xxx, 390; xxxv, 145.

---- ----, ----, ibid, _F. A. P. Barnard_, xxxiv, 284.

---- ----, ----, ibid, _D. Olmsted_, xxxii, 180.

---- ----, ----, _Mr. Rowall's_ theory of, xli, 41.

---- ----, height of, _M. Mairan_, xxxiv, 288.

---- ----, ----, _M. Farquharson_, xxxiv, 288.

---- ----, ----, _D. Olmsted_, xxxiv, 286.

---- ----, ----, _M. Wartmann_, xxxiv, 288.

---- ----, ----, _M. Dalton_, xxxiv, 288.

---- ----, ----, _Dr. Richardson_ of Capt. Franklin's Expedition,

xxxiv, 289.

---- ----, noises of, an illusion, _Capt. Scoresby_, xxviii, 58.

---- ----, ----, ibid, _D. Olmsted_, xxxiv, 289.

---- ----, periodical, _D. Olmsted_, xxxii, 177.

---- ----, no polarization by light of, _J. Henry_, xxxix, 366.

---- ----, work by _Mairan_, alluded to, xxix, 388; xxxii, 177.

Auroral cloud of Dec., 1835, _A. C. Twining_, height and position of,

xxxii, 217.

Auroral arch of Aug., 1836, _A. C. Twining_, height and position of,

xxxii, 220.

---- ---- of May, 1836, height of, _A. C. Twining_, xxxii, 224.

---- ----, in Vermont, Sept., 1838, _J. Dean_, xxxv, 380.

---- belt of May, 1840, _E. C. Herrick_, xxxix, 194, 383.

Aurum Millium, a new metal, ii, 363.

Auscultation, iii, 375.

Australia, minerals of, _F. Alger_, xxxix, 157.^f

Australian Boomerang, or Kilee notice of, xxxvi, 164.^f

Autumnal coloration of leaves, _Macaire Prinsep's_ view of, xvi, 215.

Automolite, locality in Connecticut, xii, 156.

----, ---- New Jersey, v, 402.

Aventurine feldspar, _M. Scheerer_, xlix, 394.

_Avogadro_, elastic force of the vapor of mercury, xxiv, 286.

Axinite in Canada, viii, 62.

Azote, see Nitrogen.

B.

_Babbage, C._, on the decline of science in England, xx, 164.

----, fees of admission to learned societies of Britain, xx, 165.

----, list of men of science who have held offices under governments,

xx, 172.

----, number of members of some societies, xx, 173.

----, calculating machine and constants of, xxviii, 64.

----, analytical engine of, xlvi, 205.

Babel, tower of, xxxvii, 352.

_Bache, A. D._, safety apparatus for steamboats, xx, 317.^f

----, disturbance of the needle during the aurora borealis, xxvii,

113.^f

----, on the meteors of Nov. 13, 1833 and 1834, xxix, 383.

----, influence of color on radiation, xxx, 16.

----, radiation and absorption of heat, specific heat, and apparatus for

illustrating, xxviii, 320.^f

----, corresponding magnetic observations by, along with _Prof. Lloyd_

of Dublin, xli, 210.

----, effect of deflected current of air, on the results with a rain

gauge, xxxv, 287.

----, appointed to the coast survey, xlvi, 213.

_Bachman, J._, on the migration of the birds of North America, xxx, 81.

_Bacon, Lord_, some notice of, _C. Fox_, xxxvi, 220.

_Baddely, F. H._, on the red color of the flame from strontian,

xviii, 261.

----, a new instrument for taking specific gravities, xviii, 263.^f

----, on the sulphate of strontian of Kingston, U. C., and on the

geology of the vicinity, xviii, 104.

----, buoyancy of boulders at great depths, xxviii, 111.

----, gold in Lower Canada, xxviii, 112.

----, water limerock of Quebec, xxviii, 113.

----, cement of the Castle Rock, Quebec, xxviii, 367.

_Baily's_ method of determining longitude, notice of, _E. Hitchcock_,

ix, 107.

_Bailey, J. W._, grasshoppers' legs, a substitute for frogs in galvanic

experiments, xxxi, 292.

----, washing-bottles, forms of, xxxi, 292.^f

----, on the common blowpipe, xxxii, 319.^f

----, excursion to Mt. Katahdin, Me., xxxii, 20.^f

----, list of some plants in Maine, xxxii, 23.

----, new test for nitric acid, xxxii, 85.^f

----, locality of hyalite, xxxii, 87.

----, effect of a current of air on flame, xxxii, 88.^f

----, on the vascular system of ferns, xxxv, 113.^f

----, monstrous flower of Orchis spectabilis, xxxv, 117.^f

----, on yellow showers of pollen, xlii, 195.^f

----, on a curious fungus, Craterium pyriforme, xlii, 195.

----, on the crystals in the tissues of plants, xlv, 149; xlviii, 17.^f

----, fossil polythalamia from the upper Mississippi and Missouri,

xli, 400.^f

----, ---- ----, in the U. States, xlviii, 340.^f

----, on fossil infusoria, in peat earth, West Point, N. Y.,

xxxv, 118.^f

----, infusoria of the family Bacillaria, xli, 284^f; xlii, 88^f;

xliii, 321^f; localities, xliii, 328, 329.^f

----, ---- from Oregon, the Bermudas, Virginia and Maryland, with an

extended catalogue, xlviii, 321.^f

----, ---- of New Haven harbor, xlviii, 337.^f

----, ---- of Charleston harbor, xlviii, 338.^f

----, ---- of N. Scotia, xlviii, 339.

----, ---- with bones of Mastodon, xlviii, 339.

----, ---- from Virginia, xlv, 313; xlvi, 137,^f 300; xlviii, 330.

----, ---- from Maryland, xlvi, 137^f; xlviii, 330.

_Baird, W. M._ and _S. F._, list of birds found near Carlisle, Penn.,

xlvi, 261.

----, two new species of Tyrannula, xlvi, 273.

_Baker, G._, vibrations of a mercurial pendulum, xlviii, 156.

Baking, a machine for accelerating fermentation of flour, ix, 198.

Balance, application of the principle of, to milking, churning, &c.,

_H. Strait_, xxvii, 92.^f

Balance beam, Patten's, ix, 92.^f

_Balande's_ collections of objects in natural history in Africa,

iv, 373.

_Baldwin, Wm._, two new species of Rottböllia, i, 355.

_Ball, J._, remarks upon the geology and features of the country west

of the Rocky Mountains, xxviii, 1.

Ball's cave, Schoharie, notice of, xxvii, 368.

Balloon with rarefied air, xii, 372.

----, effect of solar heat in raising, _J. Rae_, xxxiii, 196.

----, principles of aerial navigation, _H. Strait_, xxv, 15.^f

----, a means of making meteorological observations, xlii, 150.

----, observations during an ascent of, by _Eugene Robertson_,

xii, 166, 325.

_Banks, J._, herbarium of, xl, 9.

Bare Hills, Maryland, _H. H. Hayden_, xxiv, 349.^f

Barium, extrication of, _R. Hare_, xxxvii, 267; xxxviii, 115;

xxxix, 362.

----, method of preparing the deutoxide of, xvi, 395.

Bark, Peruvian, experiments on, by _G. W. Carpenter_, ix, 363.

Barlow, P., instruments for illustrating the effects of

electro-magnetism, v, 396.^f

_Barnard, F. A. P._, aurora borealis of Nov. 14, 1837, xxxiv, 267.

----, improvement in the Daguerrotype process, xli, 352.

_Barnes, D. H._, geological section of the Canaan Mt., N. Y., v, 8.

----, on some doubtful reptiles of North America, xiii, 66.

----, notice respecting magnetic polarity, xiii, 70.

----, ----, reply to, xiv, 121.

----, on the genera Unio and Alasmodonta, vi, 167,^f 258.^f

----, new species of Chiton, vii, 69.^f

Barometer, construction of, in America, _J. Green_, xxvii, 292.

----, new construction of, _J. L. Riddell_, xxvii, 223.^f

----, improvement of, _C. F. Durant_, xxvii, 97.^f

----, new form of, _J. H. Alexander_, xlv, 233.^f

----, new self-registering, xlix, 400.

----, effect of sound on, xxx, 377.

----, directions regarding, by _E. Mitchell_, xx, 364.^f

----, siphon, in determining the temperature of the mercury in, by

observation, xl, 250.^f

----, water, constructed in London, xxiv, 198.

----, remarks on, _W. C. Redfield_, xxv, 129.

----, use of, at sea, _W. C. Redfield_, xxv, 198.

----, changes in the column, as connected with the progress of a storm,

_W. C. Redfield_, xx, 45; xxv, 117; xxxi, 127; xxxiii, 262.

----, variations of, _W. C. Redfield_, xxxiii, 262.

----, ----, semi-diurnal, xxxiii, 263.

----, ----, from accumulation of atmospheric pressure owing to

obstacles in the course of winds, xxxiii, 264.

----, oscillation of an extensive region in the higher or temperate

latitudes, xxxiii, 264.

----, changes during a storm, _E. Loomis_, xl, 34.

----, ----, ibid, _J. P. Espy_, xxxix, 123.

----, ----, ibid, _M. Dové_, xliv, 315.

----, ----, remarks on, _W. S. W. Ruschenberger_, xxxiii, 345.

----, cause of the daily fluctuations of, _Espy_, xli, 42.

----, at the equator indicating time by its oscillations, ix, 195.

----, a substitute for, in measuring heights, _J. Robison_, xxxv, 294.

----, tube, filled with mercury without using an air pump, _Stevelly_,

xxxviii, 109.

----, _Hudson's_ series of investigations with, xxiv, 393.

Barometrical observations at New York, for 1833, 1834, by

_W. C. Redfield_, xxviii, 157;

--for 1832 to 1837, xxxiv, 374;

--for 1838, 1839, xxxviii, 325.

---- ----, at Western Reserve College, Sept.-Nov., 1838, _E. Loomis_,

xxxvi, 166.

---- ----, at Hudson, Ohio, for 1838-1840, with remarks, _E. Loomis_,

xli, 311.

---- ----, at Hudson, Ohio, 1841-44, _E. Loomis_, xlix, 266.

---- ----, at New Orleans, 1833-36, _Prof. Barton_, xxxi, 400.

---- ----, in Indiana, 1828, _D. D. Owen_, xxix, 294.

---- ----, at Montreal, for 1836, _J. S. M'Cord_, xxxiv, 208;

--for 1837, xxxv, 382;

--for 1838, xxxvi, 180.

---- ----, at St. John's, Newfoundland, 1834-38, xxxviii, 269.

---- ----, at Canton, China, 1829-38, xxxviii, 272.

---- ----, at St. Thomas, during a storm in August, 1837, xliv, 333.

---- ----, at Matanzas, 1835, _A. Mallory_, xxxi, 287.

---- ----, at San Fernando, Cuba, _J. H. Blake_, in 1840, xlii, 292.

---- ----, at sea, U. S. ship Peacock, _W. S. W. Ruschenberger_,

xxxiii, 348.

---- ----, on a voyage from New York to Rio, 1834, xxix, 237.

---- ----, see farther, under _Meteorological observations_.

---- pressure, monthly maximum and minimum for the years 1833-34,

at N. York, _W. C. Redfield_, xxviii, 159.

---- ----, mean and range of, at N. York, _W. C. Redfield_,

xxxviii, 265, 266.

---- ----, mean and range of, at St. John's, Newfoundland,

_W. C. Redfield_, xxxviii, 265, 266.

---- ----, mean of, at Montreal, for 1836-40, xli, 330.

---- ----, mean of, at Plymouth, England, xxxviii, 109.

---- ----, mean of, horary oscillation, &c., at Plymouth, England,

_W. Snow Harris_, xliii, 369.

---- ----, comparison of, with pressure in India, &c., xliii, 371.

---- ----, mean of, at Perth, Scotland, xl, 342.

---- ----, mean and range of, at Malvern, in Worcestershire,

xxxviii, 102.

---- ----, mean of, at Canton, China, _W. C. Redfield_, xxxviii, 267.

---- ----, mean of, in different parts of the world, _E. Loomis_,

xli, 312.

---- ----, at the level of the Dead Sea, xlii, 214.

---- ----, minima of, Feb. 16-19, 1842, xlii, 403.

---- oscillations at Inverness contrasted with those at London,

xliv, 158.

---- determination of heights, simple method of, _O. Byrne_, xliv, 12.^f

---- compensation of the pendulum, xlvi, 393.

Barrows, Indian, see _Mounds_.

_Barton, D. W._, geology of the Catskills, iv, 249.^f

_Barton, Prof._, meteorological register at N. Orleans, xxxi, 400.

_Bartlett, W. H. C._, experiments on the expansion and contraction of

building stones by changes of temperature, xxii, 136.^f

_Bartram, Wm._, notice of, _A. Gray_, xlii, 1.

Baryta, test for, iv, 372.

----, distinguished from strontia by means of chromate of potash,

_J. L. Smith_, xxxvi, 183.

----, native carbonate of, see _Witherite_.

----, native sulphate of, see _Heavy spar_.

Basalt, analyses of, iv, 230.

----, characters of, xv, 32.

----, of the Caucasus range, xxxvii, 348.

Basaltic columns, in N. Jersey, v, 240.

---- rocks of the Labrador coast, _R. H. Bonnycastle_, xxx, 236.

Basilosaurus, xxvii, 354; xxxvii, 231.

----, named Zygodon, _R. Harlan_, xli, 179.

Basin of mines, Nova Scotia, minerals of, xv, 132.

Bath, Russian vapor, _T. S. Traill_, xxiii, 295.

Battery, galvanic, see _Electricity_.

Beaches, ancient, about Lake Huron, iii, 257.

----, ----, of Lake Ontario, _G. E. Hayes_, xxxv, 89.

----, elevated, of Canadian lakes, _C. Lyell_, xlvi, 314.

----, four, to the river Malbay, L. C., v, 221.

Bead manufactory at Venice, xxvii, 78.

_Beaufoy, M._, notice of a work on nautical and hydraulic experiments,

by, xxviii, 340.

_Beaumont, W._, experiments on the gastric juice, xxvi, 193; xxvii, 405.

_Beaumont, E. de_, observations on Etna, xxxi, 168.

Beaumontite from Baltimore, analysis of, _M. A. Delesse_, xlvii, 216.

---- ----, identical with Heulandite, _F. Alger_, xlvi, 233.^f

----, a crenato-silicate of copper, xxxvii, 398; xlvii, 337.

_Beche, H. F. de la_, classification of the European rocks by,

xviii, 26.

_Beck, J. B._, influence of salt storms on vegetation, i, 388.

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