DISCOVERY 

 REPORTS 



Vol. XXI, pp. 261-356 



Issued by the Discovery Committee, Colonial Office, London 

 on behalf of the Qovernment of the Dependencies of the Falkland Islands 



PHYTOPLANKTON PERIODICITY IN 

 ANTARCTIC SURFACE WATERS 



T. John Hart, D.Sc. 



CAMBRIDGE 

 AT THE UNIVERSITY PRESS 



1942 

 Price thirteen shillings and sixpence net 



