PROCEEDINGS 



OF THE 



ROYAL SOCIETY OF LONDON 



CONTAINING PAPEES OF A BIOLOGICAL CHAEACTEK 



LONDON: 



Printed for THE EOYAL SOCIETY and Sold by 

 HARRISON AND SONS, ST. MARTIN'S LANE, 

 printers in ordinary to his majesty. 



March, 1912. 



Series B 



VOL. LXXXIV. 



