THE : 
PHILOSOPHICAL MAGAZINE 
: AND JOURNAL: 
COMPREHENDING 
THE VARIOUS BRANCHES OF SCIENCE, 
THE LIBERAL AND FINE ARTS, 
GEOLOGY, 
; AGRICULTURE, 
MANUFACTURES AND COMMERCE, 
ES 
BY ALEXANDER TILLOCH, 
M.LR.LA, M.R.AS. Monica, F.S.A. Ein. AND PERTH, ‘&c, 
‘ 
*¢ Nec aranearum sane textus ideo melior-qnia ex se fila gignunt, nec noster 
vilior quia ex alienis libamus ut apes.” Just. Lips. Monit. Polit, lib. i. cap. I. 
ne 
VOE.L; 
“For JULY, AUGUST, SEPTEMBER, OCTOBER, NOVEMBER, . 
and DECEMBER, 1817. 
3 Ne ays aeawnce ee LONDON: 
ss WMS, 
“ PRINTED BY RICHARD AND ARTHUR TAYLOR, SHOE LANE: 
And sold by Caper and Davies; Loncman, Horst, Rees, Orme, and 
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