﻿Vol. 37. 



JANUARY 1869. 



No. 246. 



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



THE 



LONDON, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE, 



AND 



JOURiNAL OF SCIENCE. 



Being a Continuation of TillocKs 'Philosophical Magazine- 

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



CONDUCTED RY 



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

 AUGUSTUS MATTHIESSEN, Ph.D. F.R.S. F.C.S. 



AND 



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



FOURTH SERIES. 



N° 246.— JANUARY 1869. 



WITH A PLATE, 

 Illustrative of Prof. R. Bunsen's Paper on the Washing of Precipitates, 



LO ND O N: 



PELNTED BY TAYLO] 



Printers a 



Sold by Longmans, Green, 



Co.; Whittaker and Co. 



Thomas Clark, Edinbu 



Dublin :— and Putnam, I 



WILLIAM WESLEY, 

 Bookseller nnb publisher, ! 



8l, Fleet bueet, London j 



COTJBT, FLEET STBEET ; 

 x y of London. 



Co.; Simpkin, Marshall and 

 -and by A. and C. Black, and 

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