PHILOSOPHICAL 
TRANSACTIONS, 
OF THE 
ROYAL SOCIETY 
LONDON. 
FOR THE YEAR MDCCCX. 
PART I. 
LONDON, 
PRINTED BY W. BULMER AND CO. CLEVELAND-ROW, ST. JAMEs’s; 
AND SOLD BYG.ANDW. N1COL, PALL-MALL, BOOKSELLERS TO HIS MAJESTY,. 
AND PRINTERS TO THE ROYAL SOCIETY. 
MDCCCX 
