PHILOSOPHICAL 
TRANSACTION 
OF THE 
ROYAL SOCIETY 
OF 
LONDON. 
(A.) 
FOR THE YEAR MDCCCLXXXYIt. 
VOL. 178. 
LONDON: 
PRINTED BY HARRISON AND SONS, ST. MARTIN’S LANE, W.C., 
llttferg in (frimtarg to |)« glajcstg. 
MDCCCLXXXVIII. 
