----, 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