JOURNAL 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND THE ARTS: 



ILLUSTRATED WITH ENGRAVINGS. 



• BY WILLIAM NICHOLSON. 



VOL. V. 



LONDON; 



PRINTED rOR THE AUTHOR, BY W, STRATFORD, CKO^VN•COI^lT, TEMPLE-BAK; 



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



M,DCCCIL 



