THE 



PHILOSOPHICAL MAGAZINE 



AND JOURNAL: 



COMPREHENDINO 



THE VARIOUS BRANCHES OF SCIENCE, * 

 THE LIBERAL AND FINE ARTS, 



GEOLOGY, 

 AGRICULTURE, 



MANUFACTURES AND COMMERCE. 



BY ALEXANDER TILLOCHy 



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



«« Nee aranearum sane textus ;deo tnelior quia ex se fila gignunt, nee no«t«r 

 vilior quia ex alienis libamus ut apes." Just. Lips. Monit. Poiit. lib. i. cap. i. 



VOL. XLV. 



ForJAmjARY, FEBRUARY, MARCH, AFRIL, MAY, 

 and JUNE, 1815. -^^MV 



LONDON: 



PRINTED BY RICHARD AND ARTHUR TAYLOR, SHOE LANE! 



And sold by Cadell and Davies ; Longman, Hurst Ries, Ormf, and 



Br.o\v.«j; MuRRAr; Highlet; Sherwood and Co.; Harbinc ; 



Undihwood, London: Constable and Co, Edinburgh: 



Brash and Reid, and Niven, Glasgow: 



& Gilbert &HoDGE», Dublin. 



