Vol. 66. 



August 1825. 



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



THE 



PHILOSOPHICAL MAGAZINE 



AND JOURNAL: 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 



AGRICULTURE, MANUFACTURES, 



AND COMMERCE. 



NUMBER CCCXXVin. 

 For AUGUST 1825. 



By RICHARD TAYLOR, F.L.S. 



MEMBSR OF THE ASTRONOMICAL SOCIETY OP LONDON ; OF THE IfETEOKOLO' 

 CICAL SOCIETT; and OF THE ROYAL ASIATIC SOCIETY 

 or GREAT BRITAIN AND IRELAND. 



inXIlB iXriAH^IAM. 



LONDON: 



PRINTED BY BICHAKO TAYLOB, SHOE-LANE: 



Sold by Cadell ; Longman, Hurst, Rees, Orme, Brown and Green ; Baldwin, 

 Cradock, and Joy; Ilighley; Sherwood, Gilbert, and Piper; Harding; Under- 

 wood; Simpkin and Miirshall ; London: — and by Constable and Co. Edin- 

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