JOURNAL 



OF 



NATURAL PHILOSOPHY, 

 CHEMISTRY, 



AND 



T H E A Ri T S. 



VOL. XXX. 



auu^traten toitft CngtatJing^. 



BY WILLIAM NICHOLSON. 



LONDON: 



PRINTED BY Vf. STRATFORD, CROWN COURT, TIMPLB BAR ; FOR 



W. NICHOLSON, 



No, IS, BLOOMSBITRY SQUARE} 



AND SOLD BY 



J.STRATFORD; No. 112, Holborn Ihhu 



1813. 



