PHILOSOPHICAL 
TRANSACTIONS. 
GIVING SOME 
ACCOUNT 
O F T H E 
Prefent Undertakings, Studies, Labours, 
OF THE 
INGENIOUS. 
IN MANY 
Conliderable Parts of the WORLD. 
VOL. XLIX. Part I. For the Year 1755. 
L O N O N. 
Printed for L. D a v i s and C. R e v M e r s, 
Printers' to the Royal Society, 
againft Gray' s-Inn Gate^ in Holbourn, 
M. DCC. LV l. 
