^Vol. 29. JUNE 1890. No. 181 



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



THE 

 LONDON, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE, 



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JOURNAL OF SCIENCE. 



Being a Continuation of TillocJis 'Philosophical Magazine/ 

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



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FIFTH SERIES. 



N° 181.- JUNE 1890. 



WITH ONE PLATE. 

 Illustrative of Mr. J. C. M c Connel's Paper on the Theory of 



Fog- Bows. 



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