THE 



PHILOSOPHICAL MAGAZINE 

 AND JOURNAL: 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, 



/ 



THE LIBERAL AND FINE ARTS, 



GEOLOGY, 

 AGRICULTURE, 

 MANUFACTURES, AND COMMERCE. 



BY ALEXANDER TILLOCH, 



M.R.I.A. M.G.S. F.S.A. Edin. and Perth, M.R.A.S. Munich, M.S.E.I.N. 

 OF France, SiC. &c. &c. 



" Nee aranearum sane textus ideo melior quia ex se fila gignunt, nee nosier yilior qui i 

 ex alienis libaraus ut apes " Just. Lips. Munit. Polit. lib. i. caj^rp::^^^ 



VOL. LV. 



For JANUARY, FEBRUARY, MARCH, APRIL, MAY, and 

 JUNE, 182U. 



LONDON: 



rBINTBO BY RICHARD AND ARTHUR TAYLOR, SHOE LANB: 



And (lold by Cadell and Davie^ ; Longman, HuRix, Rees, OuME.and 



Brown; Highley; Sherwood and Co.; Haiiding ; Unoer- 



Wood;Simpkin and MAKfJiALL, London: Constable 



and Co. Edinburgh: Brash and Rejd; Duncan; 



and Penma.n, Glasgow: and Gilbert and 



Hodges, Dublin. 



