k r ol.8. DECEMBER 1879. No. 51, 



Published the First Day of every Montlu — Price 2s. 6cZ. 



THE 

 LONDON, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE, 



AND 



JOURNAL OF SCIENCE. 



Being a Continuation of Tilloclis i 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. LLD. F.R.S. &c 



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

 ___- <2 



FIFTH SERIES. 



N° 51 .—DECEMBER 1879. 



WITH A PLATE. 



Illustrative of Messrs. Guthrie and Bots's Paper on Magneto-electric 



Induction. 



With this (the regular Number for December 1879) is published, and 

 should be delivered to Subscribers, the Supplement (No. 52) to 

 Vol. VIII., containing papers by Prof. S. P. Thompson, Dr. O. J. 

 Lodge, Prof. H. P. Weber, Prof. F. Bosetti, Mr. E. Hunt, Mr. W. 

 C. Koberts, Dr. O. J. Lodge, Mr. L. Schwendler, together with 

 Notices respecting New Books, Proceedings of the Geological Society, 

 Intelligence and Miscellaneous Articles, and the Title-page, Table of 

 Contents, and Index to Vol. VIII. 



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