PHILOSOPHICAL 
TRANSACTIONS, 
GIVING GOME 
ACCOUNT 
OF THE 
Prefent Undertakings, Studies, and Labours, 
OF THE 
INGENIOUS, 
IN MANY 
Coniiderable Parts of the WORLD. 
VOL.LVII. PART II. For the Year 1767. 
LONDON: 
Printed for L. Davis and C. R e y m e r s. 
Printers to the Royal Society, 
againfl: Gray s- Inn Gate , in Holbourn, 
mTdcc.lxviii. 
4 # 
