PHILOSOPHICAL 
TRANSACTIONS, 
GIVING SOME 
ACCOUNT 
OF THE 
Prefent Undertakings, Studies, and Labours, 
O F T H E 
INGENIOUS, 
IN MANY 
Confiderable Parts of the WORLD. 
VOL. LVIII. For the Year 1768. 
LONDON: 
Printed for L. Davis and C. Reymers, 
Printers to the Royal Society, 
againft Grays-Inn Gate> in Holbourn. 
M.DCC.LXIX. 
