PHILOSOPHICAL 
TRANSACTION S 
OF THE 
ROYAL SOCIETY 
OF 
LONDON. 
FOR THE YEAR MDCCCLXXXII. 
VOL. 173.—PART IV. 
LONDON: 
PRINTED BY HARRISON AND SONS, ST. MARTIN’S LANE, W.C.. 
|1 miters ra (Srbinarg to Per pajrstg. 
MDCCCLXXXIII. 
