7ol 35. 



MARCH 1868. 



No. 236, 



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THE 

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PHILOSOPHICAL MAGAZINE, 



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JOURNAL OF SCIENCE. 



Being a Continuation of TillocKs i Philosophical Magazine, 9 

 Nicholson's ' Journal J and Thomson's 'Annals of Philosophy. 9 





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N« 236.— MARCH 1868, 



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