Electro-magnetism, early experiments in, iii, 383; v, 391. ---- - ----, experiments in, _J. H. Abbot_, xl, 104.^f ---- - ----, _J. P. Emmet's_ discoveries (magneto-electric) in, xxiv, 78^f; xxvi, 311; xxviii, 331. ---- - ----, ----, on the cause of voltaic currents in, xxvi, 23.^f ---- - ----, _R. Hare's_ experiments, viii, 145. ---- - ----, _R. Hare's_ experiments, in confirmation of _Henry's_, xx, 143. ---- - ----, _M. Jacobi_ on, as a moving power, xl, 339. ---- - ----, ----, ibid, laws of, xl, 340. ---- - ----, _G. Moll's_ experiments in, xix, 329. ---- - ----, ---- experiments to determine how far galvanic surfaces could be diminished and retain magnetic power, xxvi, 177. ---- - ----, _C. G. Page's_ experiments on the application of, as a moving power, xxxiii, 118, 190^f; xxxv, 106. ---- - ----, _M. Pixii's_ experiments in, xxiv, 144, 146^f, 196. ---- - ----, _J. B. Zabriskie_, on the induction of metallic coils, xxxii, 308.^f Electrometers, iii, 372. Electrometer, single leaf, _R. Hare_, vii, 351^f; viii, 99; xxv, 136.^f Electromotors, _S. Dal Negro_, xxvii, 189. ----, new property of elementary, _S. Dal Negro_, xxv, 193. Electrography, gilding by, xli, 402. ----, _v. Kobell_ on, xlix, 221. Electroscope, _R. Hare_, xxv, 136.^f Electrotome, _C. G. Page_, xxxv, 112^f, 253.^f Electrotype, account of, _T. Spencer_, xl, 157.^f Elephant, death of, iv, 393. ---- of Siberia, xxvii, 353. ----, fossil, near Bloomfield, Ohio, xxv, 256. ----, ----, Jackson Co., Ohio, xxxiv, 358^f, 363.^f ----, ---- remains, Irondiquot Creek, xxxii, 377. ---- bones and Mylodon (?) from Oregon, _H. C. Perkins_, xlii, 136.^f ---- ----, from near Beering's Straits, xvi, 382. ---- tooth, from near the shores of Lake Erie, xiv, 31. Elevation above the ocean of some heights in Ohio, Michigan, Pennsylvania and New York, _C. Whittlesey_, xlv, 12. ---- ---- ibid in western New York and of Lake Erie, _C. Dewey_, xxxiii, 122. ---- ---- ---- in Wisconsin, _I. A. Lapham_, xlvi, 258. Elevation, _Hopkins'_ theoretical views respecting the geological phenomena of, xxxi, 365. ----, _G. E. Hayes_, on the effects of the ocean in western New York, during, xxxv, 86. ----, _W. W. Mather_ on causes of, in rise of sedimentary rocks of United States, xlix, 284. ----, _H. D._ and _W. B. Rogers_, theory of, xliv, 360. ---- of Ceylon, evidence of, vi, 194. ---- of the coast of Chili, xxviii, 236; xxx, 110. ---- ---- ---- and South America, _C. Darwin_, xxxiii, 100. ---- of the banks of the Mississippi, 1811, _F. C. Usher_, xxxi, 294.^f ---- of Sweden, _C. Lyell_, xxviii, 72, 387; xxix, 363. ---- of the Scandinavian coast, _L. Beamish_, xlvii, 184. ---- of Dominica, St. Christopher's, St. Eustatia and Saba, West Indies, indicated by raised coral reefs, iv, 218. Elizabeth Islands, vii, 240.^f Elk of Ireland, iv, 246. ----, fossil bones of, in North Carolina, xxvii, 170.