JOURNAL 



OF 



NATURAL PHILOSOPHY, 

 CHEMISTRY, 



AND 



THE ART S. 



VOL. XXXII. 



3|iiu$tratet> tnxtf) €ngramng$. 



BY WILLIAM NICHOLSON. 



LONDON: 



PRINTED BY W. STRATFORD, CROWN COURT, TEMPLE BAR J FOR 



W. NICHOLSON, 



No, IS, BLOOMSBURY SQUARE; 

 AND SOLD BY 



J. STRATFORD, No. 112, Holboun Hill. 



1812. 



