PLANKTON VOLUMES 

 JULY 1958 



CC OF PLANKTON PER 1000 CM 

 OF WATER STRAINED 



0-33 

 iii 34-100 

 ^B 101-300 

 ^1 301-900 

 ^B OVER 900 

 o STATIONS OCCUPIED 



Figure 10,--Plankton volumes, July 1958. 



45 



