501 



The Fishery for Blue Crabs in the 

 St. Johns River, Florida, 

 With Special Reference to Fluctuation 

 in Yield Between 1961 and 1962 



by Marlin E. Tagatz 



Marine Biological Laboratory I 



LIBRARY 



APR 2 1 1965 

 WOODS HOLE, MASS. 



SPECIAL SCIENTIFIC REPORT-FISHERIES No. 501 



