---- sleds of the Northwest, xiii, 391.^f
Dogs, anecdote of, xlvi, 243.
Dolomisation, theory of von Buch, _Daubeny's_ objections to, xxxi, 372.
----, ---- ----, facts in Maine, not confirmatory of, _C. T. Jackson_,
xxxvi, 147.
Dolomite, analysis of, iv, 17.
Dolomites of the Tyrol, disintegration of, _C. Daubeny_, xlii, 321.
----, in Africa, iv, 33.
----, in Connecticut, ii, 206; v, 36; viii, 255.
----, in Massachusetts, (fetid,) iii, 239; viii, 35.
----, in New York, iv, 17.
Dominica, raised coral reef of, iv, 218.
Donium, supposed new metal, _T. Richardson_, xxxi, 163.
_Donovan, E._, notice of the works of, xxxvii, 163.
_Doolittle, A._, the earliest American engraver, xxii, 183.
_Doolittle, I._, on a new method of charring wood, xvii, 395.^f
----, on crank motion, xii, 367; xiv, 60.^f
----, gelatine from bones, i, 170.
----, description of a hydrostat, xiii, 64.^f
----, on the revolving steam engine of Morey, ii, 101.^f
_Doornik, J. E._, observations on the use made of fossils in geological
science, xv, 90.
Dorudon, xlix, 216.
_Douglas, D._, obituary notice of, xxx, 196.
_Douglass, D. B._, plants from the headwaters of the Mississippi,
iv, 56.
_Dové_, on the laws of storms, xliv, 315.^f
----, ---- ----, strictures on, by _R. Hare_, xliv, 137.
----, ---- ----, reply to _R. Hare's_ strictures on, by
_W. C. Redfield_, xliv, 384.
_Downing, A. J._, on the order Cycadeæ and the seed of Cycas revoluta,
xxxii, 45.^f
Draining, extensive, in Russia, v, 393.
_Draper, J. W._, allotropism of chlorine, as connected with the theory
of substitutions, xlix, 346.^f
----, carbonic acid and alkaline carbonates, decomposition of, by the
light of the sun, xlvi, 398.
----, coins and medals, xxix, 157.
----, electricity, influence of, on capillary attraction, xxvi, 399.
----, elementary substance, change in, from exposure to the sun's rays,
xlvi, 390.
----, idolatry and philosophy of the Zabians, xxviii, 201.
----, light, latent, xliv, 202.
----, tithonometer, xlvi, 217.^f
Dreelite, analysis of, xxx, 380.
Drift, discussion on, at the Association of American geologists and
naturalists, 1842, xliii, 151.
----, _P. Dobson's_ views on the iceberg theory of, xlvi, 169.
----, _J. L. Hayes_, on the probable influence of icebergs on,
xlv, 316, 326.
----, _E. Hitchcock_, theory of the U. States, xli, 248.
----, ----, singular instance in Berkshire Co., Mass., xlvii, 132;
xlix, 258.^f
----, ----, influence of ice on, xlv, 324.
----, ----, copper in, Mass., xlv, 331.
----, _C. T. Jackson_, remarks on, xlv, 320.
----, _Nicollet_, remarks in opposition to the glacial theory, xlv, 323.
----, _W. C. Redfield_, influence of ice on, xlv, 325.
----, _H. D. Rogers_, remarks on, xlvii, 263.
----, ----, connection of, with earthquake vibrations, xlvii, 273.
----, see farther under _Boulders_ and _Scratches_.
Drowned person, time of, under water, determined, xviii, 170.
Drowning, resuscitation from, by oxygen gas, xvi, 250.
Druids were Zabians, xxviii, 214.
Drummond's mode of lighting light-houses by means of lime, xxi, 366.
Dry rot, _G. Gibbs_, ii, 114.
---- ----, cause of, xxx, 182.
---- ----, _P. Rainey_, xxxiv, 169.
---- ----, brief strictures on an article on, in vol. xxxiv,
_J. T. Plummer_, xlii, 197.
Drunkenness, remedy for, iv, 385.
_Ducatel, J. T._, and _J. H. Alexander_, report on the geology
of Maryland, xxvii, 1.
----, experiments on potassium and sodium, xxv, 90.
_Dumas, J._, on the determination of nitrogen in organic compounds,
xxviii, 134.
_Dumont's_ filter and prepared charcoal, xxiii, 346.^f
_Duncan, H._, on the footprints of animals in sandstone in Scotland,
xv, 84.
_Dunn's_ Chinese collection at Philadelphia, xxxv, 391.
_Durant, C. F._, improvement of the barometer, xxvii, 97.^f
_Dwight, H. E._, account of the Kaatskill mountains, ii, 11.
_Dwight, Benj. W._, facts illustrative of the powers and operations
of the human mind in a diseased state, i, 431.
_Dwight, S. E._, on the eruption of Long lake and Mud lake, Vt.,
xi, 39.^f
----, notice of a meteoric fireball, xiii, 35.
Dye, new blue, by _Robiquet_, xxii, 197.
----, superior green, vii, 196.
----, pink, from the flower of the sweet balm, xxv, 413.
----, for hats, from oak bark, xxii, 383.
----, employment of iodine as, xv, 394.
Dyeing, experiments on coloring matter for, _M. Persoz_, xxiv, 380.
----, use of chesnut wood in, i, 312.
E.
Eagle, bald, iv, 89.
Earth, action of gravity variable, and producing errors in the
determination of the figure of, xv, 172.
----, _Cordier's_ essay on the temperature of, noticed, xv, 109.
----, ----, on fluidity of the centre of, xv, 117, 118.
----, ----, on tides in the surface of, xv, 123.
----, ----, change of level in the crust of, owing to contraction
or to tides in the fluid interior, xv, 122, 124.
----, _Fourier_ on the temperature of, xxxii, 1.
----, heat of the interior of, _R. Patterson_, xxxvii, 357.
----, remarks on the theory of central heat, _W. Maclure_, xv, 384.
----, deductions from the igneous theory of, _J. H. Lathrop_, xxxix, 90.
----, oblateness and axes of, degree of a meridian, &c., _T. J. Cram_,
xxxi, 222.^f
Earthenware and porcelain, on the art of, xxvi, 233. History of the art,
xxvi, 233.^f
Earthquakes in America:
---- ----, South, _M. Hamilton_, xli, 57.
---- ----, ----, in Chili, 1835, xxviii, 336.
---- ----, ----, at eruption of Cosiguina, xxviii, 332.
---- ----, in U. States, i, 93; xliv, 419.
---- ----, ----, in New England, xxxix, 336; xl, 204, 205, 206.
---- ----, ----, in Connecticut, Aug., 1840, xxxix, 335.
---- ----, ----, ----, at Hartford, Apr. 12, 1837, xxxii, 399.
---- ----, ----, ----, E. Haddam subterranean noises, xxxix, 336.
---- ----, ----, Mississippi, notice of, iii, 20.
---- ----, ----, ibid, from the travels of _Flint_, xv, 366.
---- ----, ----, ibid, _F. C. Usher_, xxxi, 294.^f
---- ----, near the Saguenay, _R. H. Bonnycastle_, xxx, 236.
---- ----, in West Indies, Feb., 1843, xliv, 419; xlvii, 182.
---- in Europe, in Sicily, 1823, ix, 216.
---- ----, at Florence, March, 1835, xxviii, 340.
---- in Asia, in Burmah, 1839, xxxviii, 385.
---- ----, at Cutch, 16th June, 1819, iv, 315.
---- ----, in Palestine, xlviii, 14.
---- ----, at Tabriz, xxxvii, 351.
----, causes and effects of, _I. Lea_, ix, 209.
----, remarks on, xiv, 72.
----, _G. Bischof_ on the natural history of, xxxvii, 41.^f
----, ----, instances of, xxxvii, 41, 47.
----, ----, causes of, xxxvii, 42.
----, ----, connection with volcanoes, xxxvii, 43.
----, ----, propagation of, xxxvii, 46.
----, ----, direction of, xxxvii, 47.
----, ----, elevation from, xxxvi, 273.
----, ----, elevation of the Andes, xxxvii, 49.
----, ----, state of the barometer not a cause, xxxvii, 50.
----, ----, theory of central heat, xxxvii, 52.
----, _Necker's_ views, xxxvii, 236.
----, _H. D. Rogers_, characters of some recent, as bearing upon the
dynamics of geology, xlv, 341.
----, ----, undulatory character of, xlvii, 274.
----, ----, on undulations of, a cause of flexure in rocks, xliii, 177;
xlv, 341.
----, effects of, on the growth of wheat, ix, 208.
East and West Rock, N. Haven, Ct., geological structure of, vi, 44.
----, scenery of, vii, 1.
_Eastman, R._, improved rotary saw machine, v, 146.^f
_Eaton, A._, alcohol, observations on, xvi, 173.
----, geology of the Highlands, N. York, v, 231.
----, ---- and meteorology west of the Rocky Mts., xxv, 351.
----, ---- along the Erie canal, viii, 358; ix, 355; xiii, 383.
----, ----, coal formations of N. York, xix, 21.
----, ---- of northern states, notice of Index to, i, 69.
----, ----, Cherty limerock, xxxvi, 61.
----, ----, coal, anthracite, Washington Co., N. Y., xvi, 299.
----, ---- of Southampton Lead mine, i, 136.
----, ----, diluvial deposits in N. York and elsewhere, xii, 17.
----, gravel near Troy, v, 22.
----, North American localities, showing equivalency of rocks on
opposite sides of the Atlantic, xxxix, 149.
----, cardinal points in stratiographical geology, xxi, 199.
----, geological equivalents, xxi, 132.
----, ----, nomenclature of rocks, xiv, 145^f, 359.
----, ----, Prodromus, xvii, 63.
----, gold rock of the south is talcose slate, xviii, 50.
----, ----, ----, of Mexico equivalent to that of the Carolinas,
xx, 124.
----, Boletus igniarius, analogous to animal substances, vi, 177.
----, Crotalus reliquus, xx, 122.^f
----, gases and salts forming near Erie canal, xv, 233.
----, living antediluvial animals, xv, 233.
----, number _five_ a favorite in nature, xvi, 172.
----, magnetic needles, improvement in manufacture of, xii, 14.
----, trilobites, xxii, 165.
----, notice of new edition of the Geological Text Book of, xxii 391.
----, remarks by _D. Thomas_ on the views of, on the coal formations
of New York, xix, 326.
Ebullition by cold, apparatus for producing, _R. Hare_, xxxiii, 248.^f
Echinus, see ZOOLOGY, _Radiata_.
Echo, in Virginia, _C. G. Page_, xxxvi, 174.
----, in N. York state, _J. B. Church_, xxxvi, 175.
---- a means of determining the depth of a sea, not effectual,
_C. Bonnycastle_, xxxviii, 160.
Eclipse, solar, Feb. 12, 1831, xxii, 189.
----, ----, in 1834, observation on, _L. Brant_, xxvii, 386.
----, ----, of May, 1836, observations on, xl, 29.
----, ----, of Sept., 1838, observations on,
xxxviii, 158, 163, 172, 174; xl, 29.
----, ----, ----, observations on, _D. Olmsted_, xxxv, 174.
----, ----, ibid, micrometric measures, _E. P. Mason_, xxxv, 176.
----, ----, of July, 1842, xlii, 175; xliii, 401; xliv, 211.
----, ----, ----, observations suggested by, xlii, 395.
Edinburgh, on the geology of Calton Hill, near, _J. W. Webster_,
i, 230.^f
----, freshwater limestone of Burdie House, _S. Hibbert_, xxviii, 365.
_Edmondson, T._, modification of _Ampère's_ rotating galvanic element,
xxvi, 370.^f
----, rotating armatures, xxvi, 205^f; xxxii, 399.
Education in Africa, ii, 343.
---- ----, in Egypt, xii, 389.
---- in England, number of students at Cambridge and Oxford, xix, 195.
---- in Europe, by schools of mutual instruction, iv, 199.
---- ----, in Austria, Vienna Polytechnic Institute, x, 379.
---- ----, in Belgium, at Brussels, vii, 382.
---- ----, in Denmark, xii, 189; xiii, 173; xvii, 394.
---- ----, ----, at Copenhagen, x, 175.
---- ----, ----, ----, bequest for, ix, 183.
---- ----, ----, ----, deaf and dumb, xii, 197.
---- ----, in France, vii, 199; xii, 392.
---- ----, ----, in Paris, free commercial school, x, 171.
---- ----, ----, ----, _M. Cochin's_ munificence, xvii, 394.
---- ----, ----, at Caen, in prison, v, 382.
---- ----, ----, at Lyons, xx, 174.
---- ----, ----, at Marseilles, v, 191.
---- ----, in Germany or Prussia, viii, 185; xiii, 159; xx, 388.
---- ----, ----, Halle University, xiv, 381.
---- ----, ----, Berlin Rural School, ix, 187.
---- ----, ----, at Munich, iv, 196.
---- ----, ----, Wurtemberg university, viii, 183.
---- ----, in Greece, at Chios, iv, 196.
---- ----, in Holland or Netherlands, xviii, 182.
---- ----, ----, at Maestricht, by mutual instruction, v, 386.
---- ----, in Hungary, xiii, 165.
---- ----, in Poland, at Warsaw, ix, 186.
---- ----, in Portugal, vii, 198; ix, 187.
---- ----, in Russia, v, 176; xx, 176.
---- ----, ----, St. Petersburg Greek Seminary, vi, 387.
---- ----, ----, endowment of schools by a princess, iv, 386.
---- ----, in Sweden, ix, 182.
---- ----, in Switzerland, vi, 391; vii, 381; xii, 191; xiii, 397.
---- ----, ----, at Bâle, rural school, ix, 368.
---- ----, ----, at Geneva, v, 179, 380; x, 383.
---- in U. States, xx, 413.
---- ----, in New York, xv, 401; xxii, 415; xxv, 258; xxvii, 177;
xxx, 389; xlix, 176.
---- ----, in Connecticut, N. Haven Gymnasium, xiii, 385.
----, different systems of, _W. Maclure_, ix, 160, 163.
----, mutual instruction schools in Europe, iv, 199.
----, _M. Ordinaire's_ method, vii, 199, 383.
----, Owen's plan, ix, 383.
----, Owen's establishment, x, 165.
----, Pestalozzian system, _W. Maclure_, ix, 163; x, 145.
----, new method in Latin, v, 182.
---- of the poor, iii, 379.
----, American Annals of, _W. C. Woodbridge_, xix, 174, 357.
---- and government of boys, vii, 161.
----, original papers relating to a course of liberal, xv, 297.
_Edwards, J._, observations on spiders, xxi, 109.^f
Edwardsite, new mineral, with an analysis, _C. U. Shepard_, xxxii, 162.
----, identical with monazite, _G. Rose_, xxxix, 249.
----, ibid, _C. U. Shepard_, xxxix, 251.
----, crystallization of, xxxiii, 202.^f
Eggs, artificial incubation, ix, 196.
----, mode of blowing for preservation, xxi, 161.
----, means of preserving, v, 379.
----, Scotch method of preserving, xxvi, 188.
Egypt, notices of, xxviii, 23.^f
----, notice of works in, iii, 378.
----, ---- the canal of Mahommaddie, xxviii, 27.
----, ---- the Nile, xxviii, 28.
----, ---- Mahomet Ali, xxviii, 30.
----, education in, xii, 389.
----, embalmed ibis, bat, &c. from, _S. G. Morton_, xli, 187.
----, statistics of, vi, 389.
----, position of Memphis in, xxxi, 373.
Egyptian crania, observations on, _S. G. Morton_, xlviii, 268.
_Ehrenberg, C. G._, on recent and fossil infusoria, xxxiii, 111;
xxxv, 371^f; xxxvii, 116.
----, ibid, American, distribution, extent and influence of, xliii, 393;
xlvi, 297.^f
----, ----, ----, in Virginia, xlvi, 300; xlviii, 201.
----, ----, ----, in New York, at West Point, xlvi, 303.
----, ----, at Berlin, xlii, 388.
----, ----, general results of researches on, xlvii, 208.
---- and _Hemprich_, journey in northern Africa, vii, 195.
Elaine from oils, new mode of obtaining, _M. Pechet_, ix, 189.
----, separation of, from oils, xiii, 186.
----, and stearine, vi, 377.
Elasticity, an experiment on, with wine-glasses, xxii, 190.^f
Elaterite, or fossil caoutchouc, xl, 215.
Electrepeter, _Clarke's_, xxxiii, 224.^f
----, new form of, _C. G. Page_, xxxiii, 377.^f
----, magnetic and electrotome, _C. G. Page_, xxxv, 112.^f
Electric amalgam, _W. R. Johnson_, xxv, 68.
---- battery, i, 292.^f
---- brush, _R. Hare_, xxxii, 277.^f
---- currents along the muscles and nerves different, xix, 180.
---- ---- in the nerves, on the hypothesis of, _M. Matteucci_,
xlix, 387.
---- ----, course of, in electric discharges, _W. R. Johnson_, xxv, 58.
---- ----, effect of placing a candle between the poles,
_W. R. Johnson_, xxv, 59.
---- ----, two or more over the same conductor without interference,
_S. F. B. Morse_, xliv, 418.^f
---- ---- and sparks from magnets, _J. Henry_, xxii, 403.
---- ----, ponderable matter transported by, xii, 383.
---- discharges, lateral, _J. Henry_, xxxiv, 16.^f
---- discriminator, (electroscope,) _R. Hare_, xxv, 136.^f
---- excitement in leather by friction, xxxvii, 197.
---- ----, peculiar case of, in a woman, xxxiii, 394; xl, 386.
---- experiments, season favorable for, _W. R. Johnson_, xxv, 60.
---- fish, on the coast of Cape Cod, _D. H. Storer_, xliv, 213.
---- ----, Gymnotus, xl, 386.
---- fluids, the existence of two, opposed by _R. Hare_, vii, 103.^f
---- ----, observations on, _C. G. Page_, xxxvi, 353.
---- induction, decomposition of water by, _M. Hachette_, xxiv, 142.
---- ----, currents of electricity from, of different orders,
_J. Henry_, xxxviii, 232.^f
---- ----, polarity produced by, xxxviii, 3.
---- ----, _R. Hare_, letters on, to _M. Faraday_, xxxviii, 1, 19;
xli, 1.
---- ----, _M. Faraday_, in reply to _R. Hare_, xxxix, 108; xlii, 291.
---- jar, on the discharge of, xxxviii, 6.
---- kite, for determining the electricity of the upper currents of
the air, _J. Swaim_, xxxii, 304.^f
---- lady, explanation of, xxxiii, 394; xl, 386.
---- light, a mode of producing, viii, 380.
---- machine, form and arrangement of, _W. R. Johnson_, xxv, 66.
---- ----, plate, viii, 378.
---- ----, ----, _R. Hare_, vii, 108^f; xxxii, 272.^f
---- ----, communication of, with the earth not necessary, _R. Hare_,
xxiv, 253.
---- pile, theory of, xix, 375.
---- shock from a cat, mode of receiving, viii, 391.
---- sound, xlix, 390.
---- spark, _W. R. Johnson_, xxv, 57.
---- ----, length of, as affected by the size of the balls,
_W. R. Johnson_, xxv, 60.
---- ----, perforations by, in a quire of paper or card,
_W. R. Johnson_, xxv, 64.
---- ----, ----, ibid, _C. G. Page_, xxxvi, 353.
---- ---- drawn from a heated stove, xl, 385, 386.
---- ----, remarks on the so-called positive and negative, _R. Hare_,
xxxii, 275.^f
---- ----, _Wheatstone's_ experiment to determine whether there is a
sensible duration to, xxviii, 60.
---- ----, from magnets, _J. Henry_, xxii, 403.
---- ----, ----, _J. P. Emmet_, xxiv, 78.^f
---- syringe, _C. G. Page_, xxvi, 110.^f
ELECTRICITY.
----, animal, mode of receiving a shock from a cat, viii, 391.
----, ----, peculiar case in a woman, xxxiii, 394; xl, 386.
----, ----, of fish on the coast of Cape Cod, _D. H. Storer_,
xliv, 213.
----, ----, _Matteucci_ on, xxi, 157.
----, ----, observations on, _Linari_ and _Matteucci_, xxxii, 198;
xlix, 388.
----, atmospheric, water decomposed by, xx, 179; xxi, 368.
----, ----, observations on, _M. Matteucci_, xxx, 376.
----, blasting by means of, xvi, 372.^f
----, capillary attraction influenced by, _J. W. Draper_, xxvi, 399.
----, ----, ---- productive of, ix, 193.
----, conducting power of liquid gases, xxi, 374.
----, ----, ---- of the metals, xii, 199.
----, ----, ---- of steam, xxvii, 206.
----, ----, ---- of the solar rays, xvii, 391.
----, the conductibility of, by liquids, increased by adding water,
xvii, 165.
----, by contact, _Karsten_, xxxi, 159.
----, decomposition of water by atmospheric and common, xxi, 368.
----, discharge, lateral, _J. Henry_, xxxiv, 16.^f
----, effects of, on vegetation, _M. Baric_, xxxi, 160.
----, fluids of, one or two, _R. Hare_, vii, 103.^f
----, ----, ibid, _C. G. Page_, xxxvi, 353.
----, generation of, by the electrical machine, _G. W. Rains_,
xlix, 93.^f
----, evaporation in gilding, producing, v, 198.
----, induced currents of different orders produced by, _J. Henry_,
xxxviii, 232.^f
----, influence of, on the process of beer making, xxxiv, 8.
----, ----, on capillary attraction, xxvi, 399.
----, ----, on odors, xv, 394.
----, ----, on phosphorescence, _T. J. Pearsall_, xxi, 378.
----, light acting on an iodized plate, producing, xlvii, 190.
----, machinery producing, _A. Smith_, xxxix, 134.
----, medical, _J. Hall_, iii, 166.
----, motion producing and motion produced by, _J. Locke_, xxxiv, 130.
----, needle deflected by, xii, 199.
----, of peroxide of manganese, xxx, 179.
----, ponderable substances transferred by, _A. Fusinieri_, xxii, 355.
----, principles of, in 1833, _A. de la Rive_, xxvi, 175.
---- produced by the action of light on an iodized silver plate,
xlvii, 190.
---- ---- by machinery, _A. Smith_, xxxix, 134.
---- ---- by a separation of parts, or fracture, viii, 379.
---- from steam, xl, 382.
---- of the tourmaline, xvi, 390.
---- retained in a vacuum, xxix, 354.
----, science of, in 1833, _A. de la Rive_, xxvi, 175.
----, theory of, _J. D. Whelpley_, xlviii, 364.
----, ----, _Van Marum_ on, iii, 385.
---- and magnetism, connection between, iii, 386.^f
----, heat and magnetism, on the connection of, _J. F. Dana_,
vi, 163.^f
----, thermo-, see _Thermo-Electricity_.
----, Galvanic battery, _E. de Butts_, viii, 271.^f
---- ---- of carbon, xxxix, 132.
---- ---- ----, _B. Silliman, Jr._, xliii, 393; xliv, 180.^f
---- ----, _Crosse's_, some account of, xxxii, 372.
---- ----,_ De la Rive's_, v, 395.
---- ----, dry, xii, 195; xvii, 162.
---- ----, _Grove's_, xxxviii, 116.
---- ----, ----, experiments with, _S. F. B. Morse_, xlv, 390.^f
---- ----, _R. Hare's_ new modifications of, iii, 105.^f
---- ----, ----, calorimotor, i, 413; v, 94, 357, 364; vi, 337;
xxxii, 284.^f
---- ----, ----, deflagrator, iii, 105^f; iv, 201; v, 94; vi, 337;
vii, 347^f; viii, 99; ix, 181; xl, 48.
---- ----, ---- ----, improved form of, _M. Faraday_, xxxii, 170.
---- ----, ----, combining the advantages of the trough of
Cruikshank with the deflagrator, xxxii, 285.^f
---- ----, of great power, _F. W. de Moleyns_, xliv, 357.
---- ----, _J. Henry_, on a spark from a long conductor uniting the
poles of, xxviii, 327.
---- ----, ----, action of a spiral conductor, xxviii, 329.
---- ----, _C. G. Page_, on iron or any metal a substitute for
copper, xxxii, 197.
---- ----, ----, on the benefit of fresh immersion, xxxvi, 137.^f
---- ----, _W. B._ and _H. D. Rogers_, experimental enquiry into some
of the laws of, xxvii, 39.^f
---- ----, ----, relative influences of the zinc and copper,
xxvii, 41.
---- ----, ----, examination of _Ritchie's_ law of surface,
xxvii, 53.
---- ----, ----, influence of temperature, xxvii, 57.
---- ----, _J. B. Rogers_ and _J. Green_, ibid, xxviii, 33.
---- ----, ----, relative importance of the zinc and copper,
xxviii, 34.
---- ----, ----, relative distance of the plates, xxviii, 39.
---- ----, ----, deflecting power from different menstrua,
xxviii, 40.
---- ----, _W. Sturgeon_, difference in the effects of the two polar
wires, xxxix, 31.^f
---- ----, _Watkins'_ dry, xvii, 162.
---- blasting, _R. Hare_, xxi, 139; xxvi, 352^f; xxxviii, 188.
---- ----, _H. K. G. Morgan_, xxxviii, 33.
---- calorimotor, _Hare's_, i, 413^f; v, 94, 357, 364; vi, 337;
xxxii, 284.^f
---- ----, for galvano-ignition apparatus, _R. Hare_, xxxii, 284.^f
---- circle, theory of, _T. Graham_, xxxviii, 117.
---- currents, caloric a cause of, _J. P. Emmet_, xxv, 269.
---- ----, remarks on, xviii, 199.^f
---- ----, and sparks from the horse-shoe magnet, _J. P. Emmet_,
xxiv, 78.^f
---- deflagrator, _Hare's_, iii, 105^f; iv, 201; v, 94; vi, 337;
vii, 347^f; viii, 99; ix, 181; xl, 48.
---- ----, improved form of, _M. Faraday_, xxxii, 170.
---- experiments by _A. Crosse_, producing crystals, and, as
supposed, insects, xxxv, 125.^f
---- ----, by _R. Hare_, viii, 145.
---- ----, with grasshopper's legs, _J. W. Bailey_, xxxi, 292.^f
---- ignition of gunpowder, _R. Hare_, xxxvii, 269.
---- induction, _J. P. Emmet_, xxvi, 23.^f
---- lamp, an improvement in, by _Dr. J. Cutbush_, ii, 332.
---- light, transmission of, through metals of different conducting
powers, _J. Thomas_, xxxiv, 205.^f
---- ----, daguerrotype experiment by, _B. Silliman, Jr._ and
_W. H. Goode_, xliii, 185.
---- multiplier, see _Galvanometer_.
---- music, production of, _C. G. Page_, xxxii, 396; xxxiii, 118.
---- phenomenon, attending the soldering of water pipes
in N. York city, xvii, 194.
---- protection by the contact of heterogeneous metals, xvi, 263.
---- trough, _Watkins's_, xvi, 215.
_Galvanism_, anthracite a conductor of, v, 200.
----, charcoal fused by, v, 108, 361; viii, 147, 288; xxxviii, 190.
----, ---- ----, _L. Vanuxem's_ examination of, viii, 292.
----, on colors supposed to be transferred by, through animal
substances, _A. Jones_, xxi, 316.
----, _A. Crosse's_ experiments in, see _Crosse_.
----, crystallization of metals by, _G. Bird_, xxxiii, 267.
----, ----, _M. Becquerel_, xvii, 383.
----, crystals and insects, _A. Crosse_, xxxv, 125.^f
----, engravings copied by, _von Kobell_, xlviii, 221.^f
----, engravings and medals by, _T. Spencer_, xl, 157.^f
----, fossils copied by, xlii, 327.
----, gilding by, xli, 402.
----, insects supposed to be produced by, xxxii, 374^f; xxxiii, 272;
xxxv, 125^f; xlix, 227.
----, ----, ----, _W. H. Weekes_, xliii, 395.
----, grasshopper's legs, a substitute for frogs, _J. W. Bailey_,
xxxi, 292.^f
----, insulation of wires, a mode of, proposed, _A. A. Hayes_,
xx, 409.
----, metals precipitated by, structure of, _W. de la Rue_, xlix, 390.
----, minerals changed by, _R. W. Fox_, xxxi, 373.
----, results from heat of, and decomposition, _W. Sturgeon_,
xxxix, 29.
----, shocks from the calorimotor, how increased, _C. G. Page_,
xxxi, 137.^f
----, size of plates, influence of, in, xxvii, 189.
----, theory of, _Prof. Pfaff_, xix, 178.
----, theory of, _R. Hare_, i, 413.^f
----, theory of, _Schönbein_, xxxviii, 119.
Galvanography, _von Kobell_, xlviii, 221.^f
----, _T. Spencer_, xl, 157.^f
----, fossils copied by, xlii, 327.
Galvano-ignition apparatus, _R. Hare_, xxxii, 282.^f