JOURNAL 



o p 



NATURAL PHILOSOPHY, CHEMISTRY, 

 AND THE ARTS : 



ILLLUSTRATED WITH ENGRAVINGS. 



BY WILLIAM NICHOLSON. 



^^==^^=^=^=—- — ■ ' ■ -— ■ 



VOL. II. 



LONDON: 



HUNTED FOR THE AUTHOR, AND SOLD BY G. G. AND J, ROBINSON, PATERNOSTER-ROW. 



M.DCC.XCIX. 



