PHILOSOPHICA L 
TRANSACTION S, 
OF THE 
ROYAL SOCIETY 
O F 
L O N D O N. 
VOL. LXXVI. For the Year 1786. 
P A R T S' I. 
LONDON, 
SOLD BY LOCKYER DAVIS, AND PETER ELMSLY, 
PRINTERS TO THE ROYAL SOCIETT. 
MDCCLXXXVI. 
