﻿^ol. 41. JUNE 1871. No. 275, 



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THE 

 LONDOiN, EDINBURGH, and DUBLIN 



PHILOSOPHICAL MAGAZINE, 



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FOURTH SERIES, 

 N° 275.— JUNE 1871. 



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Illustrative of Professor K. W. Zenger's Paper on the Tangent- 

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With this, the regular Number for June 1871, is published, and should 

 be delivered to Subscribers, the Supplement (No. 276) to Vol. XLL, 

 containing papers by M. A. Heim, Mr. D. Vaughan, the Hon. J. W. 

 Strutt, Mr. F. Burden, Professor Cayley, together with Notices re- 

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