THE' 



PHILOSOPHICAL MAGAZINE; 



COMPREHENDING 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 

 AGRICULTURE, MANUFACTURES, 



AND 



COMMERCE. 



BY ALEXANDER TILLOCH, 



MEMBER OF THE LONDON PHILOSOPHICAL SOCIETY, ETC. ETC. 



** Nee aranearum fane textus ideo melior, quia ex fe fila gignunt. Nee noiier 

 vilior quia ex alienis libamus ut apes/* Just. Lips. Monk. Polit. lib. i. cap. I. 



\^n 



vol. xiii. >m 



LONDO N: 



Printed for Alexander Tillochj 



And Sold by Meffrs. Richardson, Cornhill; Cadell and Davies, 



Strand; Debrett, Piccadilly; Murray and Highley, No. 32, 



Fleet-ftreet ; Symonds, Pater-nofter Row ; Bell, No. 148/ 



Oxford-ftreet ; Vernor and Hood, Poultry ; Hardino* 



No. 36, St. James's-ftreet ; Bell and Bradfutf* 



Edinburgh; Brash and Reid, Glafgowj 



and W. Gilbert, Dublin. 



[Wilis and Taylor , Printers, Cbancrfy-Lane.'] 



