PHILOSOPHICAL 
TRANSACTIONS 
GIVING SOME 
ACCOUNT 
OF THE 
Prefent Undertakings, Studies, a?id Labours, 
OF THE 
I NGENIOUS, 
IN MANY 
Confiderable Parts of the WORLD. 
V OL. LII. Part I. For the Year 1761. 
LONDON: 
Printed for L. Davis and C. Rhymers, 
Printers to the Royal Society, 
againft Gray s- Inn Gate , in Holbourn. 
M DC C. LX II. 
