)1.1. APRIL 1876. No. 4. 



Published the First Day 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' 



CONDUCTED BY 



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

 SIR WILLIAM THOMSON, Knt. LL.D. F.R.S. Ac. 



AND 



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



FIFTH SERIES. 



N° 4.— APRIL 1876. 



WITH A PLATE, 



Illustrative of Professors King and Kowney's Paper on the Serpentinite 



of the Lizard. 



LONDON: 



PBINTED BY TAYLOB AND FBANCIS, BED LION COUBT, FLEET STBEET, 



Printers and Publishers to the University of London. 

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

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

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

 New York : — and Asher and Co., Berlin. 



