>^^ Fublished tlie Last Day of every Month, j^|i|^ 



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THE 



PHILOSdPHIC.AL MAGAZINE ^ 

 AND JOUKNAL: 



• COMPR3HBNDING ' 



THE VARIOUS BRANCHES OF -SCIENCE, 

 ' THE LIBERAL AND FINE ARTS, 

 GE'O'LO GY, 

 AGRICULTURE, 

 MANUFACTURES A^fiQ COMMERCE. . , ^ 



NUMBER CCLV. 

 For JUL Y 181^ 



WITH AU ENGRAVI^'G by PQRTEJR 

 Of tlieMENAi Bridge. 



BY ALEXANDER TILLOCHj 



l.a.LA; M.O.S. M.R.A.S. MUNICU, F.S.A. EDIN. AND PF.UTH, !cc. 



L ON- DON: 



' fRISTF.D BT RICHAi-D AND ARTHUR. TAYLOR, SHOE-LASE: 



Ar.d sold by CADELLatid DAvtFs ; Longmak, Horst, Rees, 



' )» Mh, k. Brown-; Highley ; Sherwood aildCo.; Harding; 



^.OF.KWQOO; SiMrKiN^sndMARSHALL; London: Constable 



. 1 Cn. EdinbuT^^h : BRAsn-JindK,E!D ; Duncan; ;iftd Phn- 



vN, Glasgow: iind Gilbert and Hoi^es, Dublin. 



