UNITED STATES DEPARTMENT OF THE INTERIOR, Stewart L. Udall, Secrefary 



FISH AND WILDLIFE SERVICE, Clarence F. PauUke, Co/nm/ss/oner 



BUREAU OF COMMERCIAL FISHERIES, Donald L. McKeman, Director 



THE PACIFIC REGION OF THE BUREAU OF COMMERCIAL 



FISHERIES 



By 

 Thomas O. Duncan 



Fishery Research Biologist 



Bureau of Commercial Fisheries 



U.S. Fish and Wildlife Service 



Seattle, Washington 



FISH AND WILDLIFE CIRCULAR 108 



Washington, D.C. 

 May 1961 



