PLANKTON VOLUMES 

 JULY I960 



CC.OF PLANKTON PER IPOO M." 

 OF WATER STRAINED 



1-33 



34-100 



101-300 

 ^1 301-900 

 ^S OVER 900 

 o STATIONS OCCUPIED 



Figure 10. — Plankton volumes, July 1960. 



36 



