PROCEEDINGS 



OF THE 



ROYAL SOCIETY OF LONDON 



Series B 



CONTAINING PAPERS OF A BIOLOGICAL CHARACTER 



VOL. LXXVIII. 



LONDON: ' 



Printed for THE EOYAL SOCIETY and Sold : 

 HAEEISON AND SONS, ST. MARTIN'S LANE, 



PRINTERS IN ORDINAR^^«fi^,«MA.JESTY. 



December, 1906. 



