THE PREPARATION OF MARINE 

 PHYTOPLANKTON FOR MICROSCOPIC 

 EXAMINATION AND ENUMERATION 

 ON MOLECULAR FILTERS 



Marine Biological Laboratorvl 



MAP n ms 



WOODS HOLE, MASS. 



SPECIAL SCIENTIFIC REPORT-FISHERIES Na 433 



UNITED STATES DEPARimNT^M]HMNTE^ 



FISH AND WILDLIFE SERVICE 



