JOURNAL 



0F 



NATURAL PHILOSOPHY, 

 CHEMISTRT, 



THE ARTS. 



VOL. XVII. 



3Ittttgtrate& \xitb Cngrattfnga. 



BY WILLIAM NICHOLSON. 



' LONDON: 



KUNTED BY \V. STRATTORD, CROWN COURT, TEMPLS EAR J TO* 



THE AUTHOR, 



AND SOLD BY 



J. STRATFORD, No. 112, Hqlborn-Hill., 

 1807. 



