UNITED STATES DEPARTMENT OF THE INTERIOR, STEWART L. UDALL, SECRETARY 

 Fish and Wildlife Service, Clarence F. Pautzke, Commissioner 

 Bureau of Commercial Fisheries, Donald L. McKernan, Director 



USE OF MOBILE BIOASSAY EQUIPMENT IN THE 

 CHEMICAL CONTROL OF SEA LAMPREY 



by 



John H. Howell 



Bureau of Commercial Fisheries 



U. S. Fish and Wildlife Service 



Millersburg, Michigan 



and 



Willman M. Marquette 



Bureau of Commercial Fisheries 



U. S. Fish and Wildlife Service 



Ludington, Michigan 



United States Fish and Wildlife Service 

 Special Scientific Report—Fisheries No. 41! 



Washington, D. C. 

 April 1962 



