PLANKTON VOLUMES 

 JANUARY 1958 



CC OF PLANKTON PER 1000 CM 

 OF WATER STRAINED 



0-33 

 34-100 



^m 101-300 



Wt 301-900 

 Hj OVER 900 



STATIONS OCCUPIED 







Figure 4.--Plankton volumes, January 1958, 



