A 



JOURNAL 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND THE ARTS: 



ILLUSTR4TED WITH ENGRAVINGS. 



BY WILLIAM NICHOLSON. 



VOL. III. 



LONDON: 



PBINTKD FOR THE AUTHOR, BY \V. STRATFORD, CROWN-COURT, TEMPLE-BAR. 



AND SOLD BY G. G. AND J. ROBINSON, PATERNOSTER-ROW. 



M.DCCC. 



