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

 Fish and Wildlife Service, Arnie J. Suomela, Commissioner 



BLOOD TYPES IN PACIFIC SALMON 



by 



George J. Ridgway Eind George W. Klontz 



Fishery Research Biologists 



Bureau of Commercial Fisheries 



Contribution No. 12 to research conducted with 

 the approval of the United States Section of the 

 International North Pacific Fisheries Commission. 



United States Fish and Wildlife Service 

 Special Scientific Report — Fisheries No. 324 



Washington, D. C. 

 January 1960 



