THE 
PHILOSOPHICAL MAGAZINE: 
COMPREHENDING , 
THE VARIOUS BRANCHES OF SCIENCE, 
THE LIBERAL AND FINE ARTS, 
AGRICULTURE, MANUFACTURES, 
AND 
COMMERCE. 
Seg ee 
BY ALEXANDER TILLOCH, 
BEMBER OF THE LONDON PHILOSOPHICAL soctETyY, &c. 
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‘¢ Nec aranearum fane textus ideo melior, quia ex fe fila gignunt. Nec nofter 
vilior quia ex alienis libamus ut apes.” Just. Lies. Afonit. Polit. lib. i. eap. 1. 
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