PHILOSOPHICAL 
TRANSACTIONS, 
OF THE 
ROYAL SOCIETY 
OF 
LONDON. 
FOR THE YEAR MDCCCI. 
PART II. 
LONDON, 
PRINTED BY W. BULMER AND CO. CLEVELAND-ROW, ST, JAMEs’s 
AND SOLD BY PETER ELMSLY, 
PRINTER TO THE ROYAL SOCIETY. 
MDCCCI. 
