T H E 

 LONDON, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE 



AND 



JOURNAL OF SCIENCE. 



[FIFTH SERIES.] 



JUNE 1893. 



XL VII I. Electrochemical Effects due to Magnetization. 

 By George Owen Squier, Ph.D., Lieut. U.S. Army *. 



Introduction. 



THE influence of magnetism on chemical action was the 

 subject of experiment by numerous investigators during 

 he first half of the present century f . Up to 1847 we find 

 by no means a uniformity of statement in regard to this 

 subject, and secondary effects were often interpreted as a true 

 chemical influence. Among the earlier writers who main- 

 tained that such an influence exists may be mentioned Ritter, 

 Schweigger, Dobereiner, Fresnel, and Ampere ; while those of 

 opposite view were Wartmann, Otto-Linne Erdmann, Ber- 

 zelius, Robert Hunt, and the Chevalier Nobili. 



Professor Remsen's discovery, in 1881, of the remarkable 

 influence of magnetism on the deposition of copper from one 

 of its solutions on an iron plate, again attracted attention to 

 the subject, and since then considerable work has been done 

 directly or indirectly bearing on the question. 



Among other experiments by Professor Remsen % were the 

 action in the magnetic field of copper on zinc, silver on zinc, 

 copper on tin, and silver on iron, in all of which cases the 

 magnet evidently exerted some influence. With copper sul- 

 phate on an iron plate the effects were best exhibited, the 



* Communicated by the Author. 



t Wartmann, Philosophical Magazine, 1847, (3) xxx. p. 264. 

 % American Chemical Journal, vol. iii. p. 157, vol. vi. p. 430 ; i Science/ 

 vol. i. no. 2 (1883). 



Phil. Mag. S. 5. Vol. 35. No. 217. June 1893. 2 L 



