TRANSACTIONS 



of the 



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 2 



1917-1918 



Edited by Raymond C. Osburn 



MARCH, 1918 



j^onaf Museum 



ij 



Published Quarterly by the Society 



COLUMBUS, OHIO 



