Numb. 473. 
PHILOSOPHICAL 
TRANSACTIONS. 
GIVING SOME 
ACCOUNT 
OF THE 
Prefent Undertakings, Studies, and Labours, 
O F T H E 
INGENIOUS. 
IN MANY 
Coniiderable Parts of the WORLD* 
LONDON: 
Printed for C. Davis, over againft Gra/s-Inn * 
Gate in Holborn > Printer to the Royal 
Society. 1745% 
