“On the _Induction_ of Electric Currents.”... The general term _induction_ which, as it has been received into scientific language, may also, with propriety, be used to express the power which electrical currents may possess of inducing any particular state upon matter in their immediate neighbourhood.... I propose to call this action of the current from the voltaic battery _volta-electric induction_ ... but as a distinction in language is still necessary, I propose to call the agency thus exerted by ordinary magnets _magneto-electric or magne-electric_ induction. [29] “Experimental Researches,” i. 25, art. 85. This copper disc is still preserved at the Royal Institution. It was shown in action by the author of this work, at a lecture at the Royal Institution delivered April 11th, 1891. Fig. 6 is reproduced in facsimile from Faraday’s laboratory note-book. [30] “Experimental Researches,” i. art. 135. [31] _Ib._, art. 155. [32] _Ib._, art. 158. [33] _Ib._, art. 219. [34] “Experimental Researches,” i. art. 220. [35] _Ib._, art. 222. [36] _Ib._, iii. art. 3192. [37] “Ann. Chim. Phys.,” li. 76, 1832. [38] The great magnet of the Royal Society, which was at this time lent to Mr. Christie. [39] [Original footnote by Faraday.] By magnetic curves, I mean the lines of magnetic force, however modified by the juxtaposition of poles, which would be depicted by iron filings; or those to which a very small magnetic needle would form a tangent. [40] The entire uselessness as well as the misleading effects of such unscientific nomenclature might well be taken to heart by those electrophysiologists and electrotherapeutists who still indulge in the jargon of “franklinisation,” “faradisation,” and “galvanisation.” [41] In modern language this would be called the time-integral of the discharge. The statement is strictly true if the galvanometer (as was the case with Faraday’s) is one of relatively long period of oscillation. [42] From ἄνω _upwards_ and ὁδός _a way_; and κατά _downwards_ and ὁδός _a way_. The words _cathode_ and _cation_ are now more usually spelled _kathode_ and _kation_. Faraday sometimes spelled the word _cathion_ (Exp. Res. Art. 1351), as did also Whewell (Hist. of Ind. Sciences, vol. iii. p. 166). [43] Literally, _the travellers_, the things which are going. [44] The term _induction_ appears to have been originally used, in contradistinction to _contact_ or _conduction_, to connote those effects which apparently are in the class of actions at a distance. Thus we may have induction of a charge by a charge, or of a magnet-pole by a magnet-pole. To these Faraday had added the induction of a current by a current, and the induction of a current by a moving magnet. Amid such varying adaptations of the word _induction_, there is much gain in allotting to the electrostatic induction of charges by charges the distinguishing name of _influence_, as suggested by Priestley.