PHILOSOPHICA L 
TRANSACTIONS, 
O F 
THE ROYAL SOCIETY 
O F 
LONDON. 
VOL. LXVI. For the Year 1776. 
PART I. 
LONDON, 
PRINTED BY W. BOWYER AND J. NICHOLS: 
FOR LOCKYER DAVIS, IN HOLBOURN, 
PRINTER TO THE ROYAL SOCIETY. 
MDCCLXXVI. 
