United States Department of the Interior, Fred A. Seaton, Secretary 

 Fish and Wildlife Service, ArnieJ. Suomela, Commissioner 



U.S. FEDERAL FISHERY RESEARCH ON THE GREAT LAKES 



THROUGH 1956 



By 



Ralph Hile 

 Fishery Research Biologist 

 Bureau of Commercial Fisheries 



Special Scientific Report- -Fisheries No. 226 



Washington, D. 

 October 1957 



