PHILOSOPHICAL 
-TRANSACTIONS, 
GIVING SOME 
ACCOUNT 
O F T H E 
Prefeat Undertakings, Studies, and Labours, 
o F T H E 
INGENIOUS. 
IN MANY 
Confiderable Parts of the WORLD. 
VOL. XLV. For ihe Year 1748. 
L O N T> O N: 
Printed for C. Davis, Printer to the Royal 
Socie tyj over-againft Gray s- Inn-Gate in Holbourn 
M. DCC. L. 
