PHILOSOPHICA L 
TRANSACTION S, 
OF THE 
ROYAL SOCIETY 
O F 
L O N D O N. 
VOL. LXXV. For the Year 1785. 
PART II. 
Basuv/i . 
LONDON, 
SOLD BY LOCKYER DAVIS, AND PETER ELMSLY* 
PRINTERS TO THE ROYAL SOCIETY. 
MDCCLXXXV* 
