Vol. 40. September 1812. No. 173. 



Published the Last Day of every Month y 

 ;.^^ [PRICE 2s. 6d.] 



Si ============ 



THE 



1 PHILOSOPHICAL MAGAZINE 



COMPREHENDING 



GEOLOGY, 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 



AGRICULTURE, 



MANUFACTURES AND COMMERCE. 



NUMBER CLXXIII. 

 For SEPTEMBER 1812. 



ILLUSTRATED WITH THE FOLLOWING ENGRAVINGS: 



Two Octavo Plates descriptive of a New Machine for Pumping 

 * /iCv! (^ Water. 



BT ALEXANDER TiLLOCHy 



M.R.I.A. F.S.A. BDIN. AND PERTH, &C. 



LONDON: 



PRINTED BY RICHARD TAYLOR AND CO., SHOE LANE: 



;And8o1dby Richardbons; Cadell and Davies; Longman, 

 HuKST, Rbes,Ohme& Brown; Murray; Higiiley; Sher- 

 wood and Co.; Hardino; London: Constable and Co. 

 Edinburgh: Brash and Reid, and D. Niven, Glasgow : 

 and GiLBBBT and Hodges, Dublin. 



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