PHILOSOPHICAL 
T R ANSACTION 
OF THE 
ROYAL SOCIETY 
OF 
LONDON. 
FOR THE YEAR MDCCCLXXXV. 
VOL. 176.—PART II. 
LONDON: 
PRINTED BY HARRISON AND SONS, ST. MARTIN’S LANE, W.C., 
printers in ©rfcittarg to fur Pajrstg. 
MDCCCLXXXVI. 
