THE 



PHILOSOPHICAL MAGAZINE 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE; 



THE LIBERAL AND FINE ARTS, 



AGRICULTURE, MANUFACTURES, 



AND 



COMMERCE, 



BY ALEXANDER TILLOCH, 



KONORARY MEMBER OF THE ROYAL IRISH ACADEMY, &C. &"C. &C. 



" Nee aranearum sane textus ideo melior quia ex se fila gignunt, nee nostef 

 vHior quia cs alicliis libamus ut apes." Just. Lips. Monit. r<jlit, lib. i. cap. i. 



LOND ON: 



Printed hy R. Tuyhr and Co., Black-Horse-Cuurt, Fleet-street : 



Aod sold by Mesisrs. Richardson ; Cadell and Davies ; Loncm.in, 



Hurst, Reej, and Okme; Symonds; Murray; Highlet ; 



VxKNOR and Hood; Harding; London: Bki.l and 



Bkadkuie, Edinburgh; Brash and Rfid, and 



D. N»viN, Glasgow; and GiLUEKi' 



und HoDCEi;, Dubliji. 



Ib05. 



