THE M , 



PHILOSOPHICAL MAGAZINE: 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 



AGRICULTURE, MANUFACTURES, 



AND 



COMMERCE. 



BY ALEXANDER TILLOCH, 



M.R.I.A. F.S.A. Edin. and Perth, &c. 



** Nee aranearum sane textus ideo melior quia ex se fila gignunt, nee noster 

 vilior quia ex alienis libamus ut apes." Just. Lips. -Monti. I'olit. lib. i. cap. i. 



VOL. XXXII. 



For OCTOBER, NOVEMBER, and DECEMBER, 1808. 



L O ND ON: 



PRINTED EY RICHARD TAYLOR AND CO., SHOE LANE: 



And sold by Richardsons ; Cadell and Da vies ; Longman, Hurst> 



Rees, and Orme; Vernor, Hood, and Sharpe ; Murray; 



Highley; Sherwood and Co.; Harding; London; 



Bell and Bradfute, and Constable and Co. 



Edinburgh: Brash and Reid, and Niven, 



Glasgow: & Gilbert & Hodges, Dublin, 



