RADICAL PREVENTION OF COSTIA NECATRIX IN 

 SALMONOID FRY 



By Johann Franke 



Director of the Fish-Culture Establishment at Studenec and Secretary of 

 ike Fishery Committee for the District of Krain 



Paper presented before the Fourth International Fishery Congress 

 held at Washington, U. S. A., September 22 to 26, 1908 



917 



