THE 



PHILOSOPHICAL MAGAZINE 



COIMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 

 AGRICULTURE, MANUFACTURES, 



AND 



COMMERCE. 



BY ALEXANDER TILLOCH, 



MEMBER OP THE LONDON PHILOSOPHICAL SOCIETY, ETC. ETC, 



" Nee aranearum fane textus ideo melior, quia ex fe fiia gtgnunt. Nee noftcT 

 vilior quia ex alienis libamus ut apes." Just. Lips. Monil. Poliu lib. i. tap. i. 



VOL. VI. 



LONDON: 



PRINTED BY DAVIS, TAYLOR, AND WILKS, CHANCERY-LANE;, 



For Alexander Tillochj and fold by MeflVs. Richardson, 



Cornhlll ; Cadell and Davies, Strand ; Debrett, Piccadilly j 



Murray and Highley, N0.32, Fleet-llreet ; Symonds, 



Paternofter-Row ; Bell, No, 148, Oxford-ftreet ; 



Vernor and Hood, Poultry; Harding, No. 36, 



St. James's-ftreet; Westley, No. 159, Strand j 



J. Remnant, High-ftreet, Bioomfbury 5 



W. Remnant, Hamburgh; a«d 



W. Gilbert, Dublin. 



