PHILOSOPHICAL 
TRANSACTIONS, 
GIVING SOME 
ACCOUNT 
OF THE 
Prefent Undertakings, Studies, and Labours, 
OF THE 
INGENIOUS, 
I N M A N Y 
Confiderable Parts of the WORLD. 
1 i , 
VOL. LXIII. Part II. 
LONDON: 
Printed for LOCKYERDAVIS, in Holbourn, 
Printer to the Royal Society* 
M.DCC.LXXIV. 
