Vol. 60. 



Nov. 1822. 



No. 295. 



Published the Last Day of every Month, 

 [PRICE 2s. 6d.] 



THE 



PHILOSOPHICAL MAGAZINE S 

 AND JOURNAL: 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 



AGRICULTURE, MANUFACTURES, 



AND COMMERCE. 



NUMBER CCXCV. 



For N FE M B E R 1822. 



By ALEXANDER TILLOCH, LL.D. 



M.R.I. A. M.O.S. M.A.S. F.S.A. EDIN. AND PERTH ; CO KRE3P0NDI NO MRM-J 

 DER OF THE ROYAL ACADEMY OF SCIENCES, MUNICH ; AND OF THe[ 

 ACADEMY OP SCIENCES, LITERATURE AND ARTS, lEGHORNi hi. &,C. ^^^ 



And RICHARD TAYLOR, F.L.S. 



LONDON: 



PRINTED BY RICHARD TAYLOR, SHOE-LANIi : 

 AND soft) BY CADELL; LONGMAN, HURST, REES, ORME, 

 AND BKOWN; BALDWIN, CRADOCK, AND JOY; HIGHLEY;, 

 SHERWOOD, NEELY, AND .TONES; HARDING; UNDERWOOD;] 

 SIMPKIN AND MARSH-ALL; LONDON: CONSTABLE AND CO. 

 EDINBURGH: AND PENMAN, GLASGOW. 



