PHILOSOPHICAL 
TRANSACTIONS 
OF THE 
ROYAL SOCIETY 
OF 
LONDON. 
FOR THE YEAR MDGCCXXV. 
PART I. 
LONDON: 
PRINTED BY W. NICOL, SUCCESSOR TO W. BULMEE AND CO. 
CLEVELAXD-RO^Y, ST. JAMEs’s; 
AND SOLD BY G. AND W. NICOL, PALL-MALL, PRINTERS TO THE 
ROYAL SOCIETY. 
MDGCCXXV. 
