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THE 



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ll 



NUMBER CLXXXI. 

 For MAY 1813. 



CONTAINING THE FOLLOWING ENGRAVINGS: 



L A Plate to Illusrratc Mr. Southern's Ess.xy on the Equi- 

 libriiim of a Combination of Beams, Blocks, &c. and on 

 the Polygon of Forces. 



2. A Plate to illustrate Mr. Steevens's Account of a Meteor 

 seen at London and other Places in March last. 



BT ALEXANDER TILLOCH, 



M.K.I. A. F.S.A. EDIN. AND PERTH, &C. 



LONDON: 



TRINTED BY RICHAKD TAYLOR AND CO., SHOR LANK: 



.Andsoldby Richardsons; Cadell and Davies; Longman, 

 HuKST, Rees, Ormb& Brown; Murray; Highlkyj Sher-bw^ 

 wood and Co.; Hauding; London: Cokstablb and Co.\|^^_- 

 Edinburgh: Brash and Reid, and D. Nivbn, Glasgow : /StM 

 andGiLBBRT and Hodges, Dublin. 



