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