PHILOSOPHICAL 
TRANSACTIONS, 
GIVING SOME 
ACCOUNT 
O F T H E 
omulo / l 
Prefent Undertakings, Studies, and Labours, 
s . , n \ .* s 
O F T H E 
INGENIOUS. 
IN MANY 
Confiderable Parts of the WORLD. 
VOL. XLVI. For the Years 174.9 and 175-0. 
LONDON: 
Primed for C. Davis, Printer to the Royal 
Society, over-againft Gray’s- Inn-Gate in Holbourn. 
M. DCC. L 11. 
