Vol.4. NOVEMBER 1877. No. 26. 



Published the First Day of every Month, — Price 25. 6c?. 



THE 

 LONDON, EDINBURGH, ato DUBLIN 



PHILOSOPHICAL MAGAZINE, 



AND 



JOURNAL OF SCIENCE. 



Being a Continuation of TillocKs ^Philosophical Magazine^ 

 Nicholson^ s 'Journal^ and Thomson! s 'Annals of Philosophy,^ 



CONDUCTED BY 



SIR ROBERT KANE, LL.D. F.R.S. M.R.LA. F.O.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° 26.—NOyEMBER 1877. 



LONDON: 



PBINTED BY TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET, 

 Frinters and Publishers to the University of London. 

 Sold by Longmans, Green, E-eader and Dyer j Kent and Co. ; Simpkin, Marshall and 

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