PHILOSOPHICAL 
TRANSACTIONS, 
GIVING SOME 
ACCOUNT 
O F T H E 
Prefent Undertakings, Studies, and Labours, 
o F T H E 
INGENIOUS, 
IN MANY 
Confiderable Parts of the WORLD. 
VOL. LX. For the Year 1770. 
LONDON: 
Printed for LOCKYER DAVIS, 
Printer to the R o y a l Society, 
in Holbourtt. 
M.DCC.LXXI. 
