SUPPLEMENTARY NUMBER. 



Vol. 3. No. 21 



Published the First Day of every Month. — Price 2s. 6d. 



THE 

 LONDON, EDINBURGH, ato DUBLIN 



PHILOSOPHICAL MAGAZINE, 



AND 



JOURNAL OF SCIENCE. 



Being a Continuation of TillocKs 'Philosophical Magazine} 

 Nicholsons 'Journal? and Thomsons 'Annals of Philosophy? 



CONDUCTED BY 



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

 SIR WILLIAM THOMSON, Knt. LL.D. F.R.S. &c. 



AND 



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



FIFTH SERIES. 



N° 21 .—SUPPLEMENT. JUNE 1877. 



WITH A PLATE, 



Illustrative of Mr. J. O. Lodge's Paper on a Modification of Mance's 

 Method of Measuring Battery Eesistance. 



This Supplement to Vol. HI. is published with the regular Number for 

 June, and should be delivered with it to Subscribers. 



LONDON: 



PRINTED BY TAYLOB AND FRANCIS, RED DION COURT, FLEET STREET, 

 Printers and Publishers to the University of London. 

 Sold by Longmans, Green, Eeader and Dyer j Kent and Co. ; Simpkin, Marshall and 

 Co. ; and Whittaker and Co. j — and by A. and C. Black, and Xliornas Clark, Edin- 

 burgh ; Smith and Son, Glasgow : — Hodges, Foster, and Co., Dublin : — Putnam, 

 ISew York : — and Aaher and Co., Berlin. 



