Vol.41. JUNE 1896. 



No. 253. 



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



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 J* 



CONDUCTED BY 



LORD KELVIN, LL.D. F.R.S. <fcc. 



GEORGE FRANCIS FITZGERALD, M.A. Sc.D. F.R.S. 



AND 



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



FIFTH SERIES. 



N° 253.— JUNE 1896 



LONDON: 



PBINTED BY TAYLOB AND FRANCIS, BED LION COUBT, FLEET STBEET. 

 Sold by Simpkin, Marshall, Hamilton, Kent, and Co., Ld. ; Wliittaker and Co. ; 

 and by A. and C. Black ;— T. and T. Olark, Edinburgh ; Smith and Son, 

 Glasgow: — Hodges, Figgis, and Co ? , Dublin: — Putnam, New York: —Veuve J. 

 Boyveau, Paris : — and Asher and Co., Berlin. 



