Vol. 4G. 



July IS) 5. 



Published the Last Day of every Months 

 [PRieE 23. 6d.] 



No. 207. 



THE 



M 



S PHILOSOPHICAL MAGAZINE 

 AND JOURNAL: 



COMPRBHeNDIKG 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 



GEOLOQY, 



AGRICULTURE, 



MANUFACTURES AND COMMERCE. 



NUMBER CCVIL 

 F'or JULY 1815. 



CONTAINING THE FOLLOWING ENGRAVINGS: 



p.^ 1. Mr. T. .Tome s's New Refiectjng Compass. ' astrji 



^^S 'J-' Mr. Woolk's Patent Boiler for Steam Engines and other &^^ 



^\^ Purposes. • l,Ni»A^ 



' "!■ ' -. ' ■ X I _■ ■' ,_ Ill . 1 I .. I .Li I II - ■ III « 



Br ALEXANUE^ TILLOCHy 



M.ikl.A. F.S.A. iDIN. ANP PERTH, &C. 



a g^TTTr-rr - i -t ^i ii — r 1 , — r;-- «■ m jsa; 



LONDON: 



PRINTBI* BY niCUAKD AKD ART H OK., TAYLOR, SHOS LANE: 



(And sold by Cade'.l and DavibS; Lonomak, Hurst, Rees, 

 Okmk, & Br,own} Murb-aY} Hishlry; Sherwood and Co.; j 

 Hahding; Underwooo; London: CovsTAytE and Co.' 

 Edinburgh: Brash and Bbid, and D. Niven, Glasgow; 

 and GiLBKRT and Hodgbs, Dublin. 



