PHILOSOPHICA L 
TRANSACTION S, 
OF THE 
ROYAL SOCIETY 
O F 
LONDON. 
V O L. LXXV. Fpr the Year 1785-, 
P A R T 5 ITT _ 
Basuv/e.. 
1 O N D O N, 
0LB BY LOCKYER DAVISj AND PETER 1LMSLY* 
PRINTERS TO THE ROYAL SOCIETY, 
MDCCLXXXV* 
