PROCEEDINGS 



OF THE 



ROYAL SOCIETY OF LONDON 



Series B 



CONTAINING PAPEES OF A BIOLOGICAL CHARACTER, 



LONDON: 



Pointed for THE ROYAL SOCIETY and Sold by 

 HARRISON AND SONS, ST. MARTIN'S LANE, 

 printers in ordinary to his majesty, 



June, 1915. 



VOL. LXXXVIII. 



