8 DEC. 1906 
PHILOSOPHICAL TRANSACTIONS 
OF THE 
ROYAL SOCIETY OF LONDON 
Series A, VOL. 206. TITLE, to 
TITLE, CONTENTS, INDEX, 
A, YOL. 206. 
X <(3-v. 
LONDON: 
PUBLISHED FOR THE ROYAL SOCIETY 
BY DULAU AND CO., 37, SOHO; SQUABE, W. 
CONTINENTAL AGENTS, MESSRS. FRIEDLANDER AND SON, BERLIN. 
1906. 
&c. 
A 412. 
Price Sixpence. 
3.11,06 
