w fbl. 33. 



FEBRUARY 1892. 



No. 201. 



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 TillocKs 'Philosophical Magazine,' 

 Nicholsons 'Journal,' and Thomson s 'Annals of Philosophy .' 



CONDUCTED BY 



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

 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° 201.— FEBRUARY 1892. 



WITH FIVE PLATES. 



Illustrative of Prof. S. Young's Paper on the Generalizations of 

 Van der Waals regarding " Corresponding " Temperatures, Pressures, 

 and Volumes ; Messrs. W. E. Ayrton and T. Mather's on the Con- 

 struction of Non-inductive Resistances ; and Mr. H. L. Callendar's 

 on some Experiments with a Platinum Pyrometer on the Melting-points 

 of Gold and Silver. 



LONDON: 



PRINTED BY TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET. 



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 Boy veau, Paris : — and Asher and Co., Berlin. 



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