Vol. 49. JUNE 1875. No. 327. 



Published the First Day of every Month.— d. 2s Qcei*Pr 



THE 

 LONDON, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE, 



AND 



JOURNAL OF SCIENCE. 



Being a Continuation of Tilloch's ' Philosophical Magazine? 

 Nicholson's ' Journal ,' and Thomson's 'Annals of Philosophy. 3 



CONDUCTED BY 



SIR ROBERT KANE, LL.D. F.R.S. M.R.I.A. F.C.S. 

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WILLIAM FRANCIS, Ph.D. F.L.S. F.R.A.S. F.C.S. 



FOURTH SERIES. 



No 327.— JUNE 1875. 



WITH A PLATE, 



Illustrative of Messrs. Gr. C. Foster and O. J. Lodge's Paper on the 



Flow of Electricity in a uniform plane conducting Surface. 



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