THE 
EDINBURGH 
1 > 1 
PHILOSOPHICAL JOURNAL, 
EXHIBITING A VIEW OF 
THE PROGRESS OF DISCOVERY IN NATURAL PHILOSOPHY^ 
CHEMISTRY, NATURAL HISTORY, PRACTICAL MECHANICS, 
GEOGRAPHY, NAVIGATION, STATISTICS, AND THE FINE 
AND USEFUL ARTS, 
FROM 
APRIL 1. TO OCTOBER 2. 1820. 
CONDUCTED BY 
Dr BREWSTER and PROFisssoR JAMESON. 
TO BE CONTINUED QUAETERLY. 
VOL. III. 
EDINBURGH : 
PRINTED FOR ARCHIBALD CONSTABLE AND COMPANY. 
1820 . 
