Vol. 14. AUGUST 1882. No. 86. 



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 Tilloctis '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. P.O.S. 

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



AND 



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



FIFTH SERIES. 



N° 86.— AUGUST 1882. 



WITH TWO PLATES. 



Illustrative of Mr. W. J. Lewis's Oystallographic Notes, and M. H. 

 Beongeesma's Paper on Double Refraction, produced by Electrical 

 Influence, in Glass and .Bisulphide of Carbon. 



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