SXTPPI.EniENTAR'Sr NUMBER. 



Vol. 44. No. 296. 



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



THE 

 LONDON, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE, 



AND 



JOURNAL OF SCIENCE. 



Being a Continuation of Tilloch^s 'Philosophical Magazine, 

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

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FOURTH SERIES. 



N° 296.— SUPPLEMENT. DECEMBER 1872. 



WITH A PLATE, 



Illustrative of M. H. Weber's Paper on the Heat-conducting Power of 



Iron and German Silver. 



This Supplement to Vol. XLIV. is published with the regular Number 

 for December, and should be delivered with it to Subscribers. 



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