DISTRIBUTION OF PHYTOPLANKTON 



5i 



Fig. 19. Distribution of Corethron valdiviae round South Georgia in the December-January 1926-7 survey. 



For full explanation see legend of Fig. 16. 



D < 10.000 



D 10.000-50.000 



~I50.000-IOO.000 



□ 



100.000- 500.000 



500,000-1000000 



1,000.000 - 50,000.000 



-u^' bv 



□ 



^ 



, : 5 Q 



□ 



□ 



E) 



■Oc 



O'iGIA 



53 



:>.;, 



45° 



35° 



Fig. 20. Distribution of Corethron valdiviae at stations between South Georgia and the Falkland Islands, 

 February 1927. The values shown at the seven points immediately around South Georgia represent average 

 values for the stations on the seven radiating lines. Negative observations shown as dots. 



