Vol. 15. MARCH 1883. No. 93. 



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 Tilloctis l Philosophical Magazine? 

 Nicholson's 'Journal,' and Thomson's l Annals of Philosophy' 



CONDUCTED BY 



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

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



AND 



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



Iff 



FIFTH SERIES. 



N° 93.— MARCH 1883. 



WITH FOUK PLATES. 



Illustrative of Mr. W. Bailt's Paper on the Spectra formed by Curved 

 Diffraction-gratings, Mr. S. P. Langley's on the Selective Absorption 

 of Solar Energy, Mr. J. T. Biley's on Capillary Phenomena, and Mr. 

 A. M. Wobthington's on the Horizontal Motion of Floating Bodies 

 under the Action of Capillary Forces. 



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