PHILOSOPHICAL 
TRANSACTIONS, 
OF THE 
ROYAL SOCIETY 
O F 
LON D O N. 
VOL. LXXVI. For the Year 1786. 
PART II. 
/ 
LONDON, 
SOLD BY LOCKYER DAVIS, AND PETER ELMSLY, 
PRINTERS TO THE ROYAL SOCIETY. 
MDCCLXX X VI 
