UNITED STATES DEPARTMENT OF THE INTERIOR 



Stewart L. Udall, Secretary 



John A. Carver, Jr., Under Secretary 



Stanley A. Cain, Assutant Secretary for Fish and Wildlife and Parks 



FISH AND WILDLIFE SERVICE, Clarence F. Paut/.kc, Commissioner 



Bureau of Commkrcial Fishiories, Donald L. McKernan, Director 



Plankton 



By 



LOUELLA E CABLE 



Marine Biological Laboratory 

 LIBRARY 



OCT 14 1992 



Woods Hole, Mass. 



Fishery Leaflet 583 



Washington, D.C. 

 July 1966 



