Vol. 31. MAY 1891. No. 192 



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



THE 

 LONDON, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE, 



AJSfD 



JOURNAL OF SCIENCE. 



Being/ a Continuation of Tilloctis i Philosophical Magazine/ 

 Nicholson s 'Journal/ and Thomson s i Annals of Philosophy.'' 



CONDUCTED BY 



SIR WILLIAM THOMSON, Knt. LL.D. P.R.S. &c. 

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



AND 



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



FIFTH SERIES. 



N° 192.— MAY 1891. 



WITH ONE PLATE. 

 Illustrative of Dr. W. W. J. Nicol's Paper on the Mutual Solubility of 



Salts in Water. 



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