TRANSACTIONS 



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American Fisheries Society 



"To promote the cause of fish culture; to gather and 

 diffuse information bearing upon its practical success, 

 and upon all matters relating to the fisheries; to unite 

 and encourage all interests of fish culture and the 

 fisheries; and to treat all questions of a scientific 

 and economic character regarding fish." 



VOLUME XLVII NUMBER 3 



1917-1918 



Edited by Raymond C. Osburn \ > 



m>. 







JUNE, 1918 



Published Quarterly by the Society 



COLUMBUS, OHIO 



