THE 



PHILOSOPHICAL MAGAZINE 



COMPREHENDIKG 



THE VARIOUS BRANCHES OF SCIENCE, 



THE LIBERAL AND FINE ARTS, 



AGRICULTURE, MANUFACTURES, 



AND 



COMMERCE. 



BY ALEXANDER TILLOCH, 



SONORARY MEMBER OF THE KOYAL IRISH ACADEMY, &C. &C. ScCj 



•' Ncc aranearum sane textiis ideo melior quia ex se fila gisrnunt, nee noster 

 Vilior quia ex alienis libanius ut apes." Just. Lips. Mojiit. Polit. lib. i. cap. i. 



VOL. XXIX. 



for OCTOBER, NOVEMBER,' and DECEMBER, 1307; 

 and JANUARY, 1808. 



LO ND O N: -••-- ' "■ "r-'^c-vy 



PRINTED FOR JOHN MURRAY, FLKET STREET; ^AiJiL^J. " 



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