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FEBRUARY 1885. —CNooz 
Published the First Day of every Month.—Price 2s. 6d. 
THE 
LONDON, EDINBURGH, anp DUBLIN 
PHILOSOPHICAL MAGAZINE, 
AND 
JOURNAL OF SCIENCE. 
Being a Continuation of Tilloch’s ‘Philosophical Magazine,’ 
Wicholson’s ‘Journal,’ and Thomson's ‘Annals of Philosophy.’ 
CONDUCTED BY 
SIR ROBERT KANH, LL.D. F.R.S. M.R.LA. F.C.S. 
SIR WILLIAM THOMSON, Knr. LL.D. F.R.S. &e. 
| AND 
WILLIAM FRANCIS, Pu.D. F.LS. F.RAS. F.C.S. 
FIFTH SERIES. 0“: |. 
N° 117.—FEBRUARY 1885.~.. 
WITH ONE PLATE. 
Illustrative of Mr. S. TotverR Preston’s Paper on some Electro- 
magnetic Experiments of Faraday and Pliicker. 
LONDON: 
PRINTED BY TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET, 
Sold by Longmans, Green and Co.; Kent and Co.; Simpkin, Marshall and Co. ; 
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117. 
