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.R A.S. Munich, F.S.A. Edix. and Perth, &c. 



« i\ec arancarum sane textus ideo melior quia ex se f5Ia gignunt, nee nostcr 

 vilior quia ex aiienis libamus ut apes." Just. Lips. Momt. I'olit. lib. i. cap. i. 



VOL. LI. 



Fer JANUARY, FEBRUARY, MARCH, APRIL, MAY, and 

 JUNE, 1818. 



LONDON: V.';;.y4r^^ 



PRINTED EY RICHARD AND ARTHUR TAYLOR, SHOE LANEV^^^*^"^ 

 AiidsoM by Cadcm, andDAvir.s; Longman, Hur.t, Rices, Orme, and 

 Brown; Hic.iii.ey; Shkrwood and Co.; Harding ; Under- 

 wood. London: CoNsiABLEand Co, Edinburgh: Brash 

 andReiD; Duncan; and Penman, Glasgow; and 

 Gilbert and Hodoks, Dublin. 



