Copies of this publication may be purchased for $1.00 

 each (paper cover) or $2.00 (cloth cover). Orders, accompanied 

 by remittance payable to the American Fisheries Society, 

 should be addressed to E. A. Seaman, Secretary-Treasurer, 

 American Fisheries Society, Box 483, McLean, Virginia. 



Copyright 1960 

 American Fisheries Society 



Printed by 

 Waverly Press, Inc. 

 Baltimore, Maryland 



