THE 



LONDON and EDINBURGH 



PHILOSOPHICAL MAGAZINE 



AND 



JOURNAL OF SCIENCE. 



[THIRD SERIES.] 

 SEPTEMBER 1833. 



XXXI. Experimental Researches in Electricity, — Third Series. 

 By Michael Faraday, D.C.L. F.R.S. M.R.I. Fullerian 

 Prof. Chem. Royal Institution, Corr. Mem. Royal Acad, of 

 Sciences, Paris, Petersburgh, Sfc.Sfc* 



§ 7. Identity of Electricities derived from different Sources. 

 § 8. Relation by Measure of common and Voltaic Electricity. 



§ 7. Identity of Electricities derived from different Sources. 



265. HPHE progress of the electrical researches which I have 

 ■* had the honour to present to the Royal Society, 

 brought me to a point at which it was essential for the further 

 prosecution of my inquiries that no doubt should remain of 

 the identity or distinction of electricities excited by different 

 means. It is perfectly true that Cavendishf, WollastonJ, Col- 

 ladon§ and others, have in turn removed some of the greatest 

 objections to the acknowledgement of the identity of common, 

 animal and voltaic electricity, and 1 believe that philosophers 

 generally consider these electricities as really the same. But 

 on the other hand it is also true, that the accuracy of Wol- 

 laston's experiments has been denied ||, and that one of them, 

 which really is no proof of chemical decomposition by com- 



* From the Phil. Trans, for 1833, Part T. This paper was read before 

 the Royal Society, Jan. 10 and 17, in the present year. Abstracts of the 

 author's First and Second Series of Experimental Researches in Electricity, 

 containing § 1 to § 6, will be found in Phil. Mag. and Annals, N.S. vol. xl 

 pp. 445, 447. 



f Phil. Trans. 1776, p. 196. % Ibid. 1801, p. 434. 



$ Annates de Chimie, 1826, p. 62, &c. || Phil. Trans. 1832, p. 282, note, 



Third Series. Vol. 3. No. 15. Sept'. 1833. Y 



