PHILOSOPHICAL 
TRANSACTIONS: 
Giving fome 
ACCOUNT 
O F T H E 
Trefent Vndertaklngs^ Studies and Labours 
O F T H E 
INGENIOUS, 
■IN M A N Y ■ 
Confiderable Parts of the World. 
VOL. XXI. For the Year \6^^. 
L 0 N D 0 N: 
Printed for S. Smith and B. Walford, Printers to the 
Royal Society, at the Prince's Arms in St. Paul's 
Church-Yard. MDCC. 
