UNITED STATES DEPARTMENT OF THE INTERIOR, Oscar L. Chapman, Secretary 

 FISH AND WILDLIFE SERVICE, Albert M. Day, Director 



DECLINE OF THE LAKE TROUT FISHERY 



IN LAKE MICHIGAN 



By Ralph Hile, Paul H. Eschmeyer, and George F. Lunger 



FISHERY BULLETIN 60 



From Fishery Bulletin of the Fish and Wildlife Service 



VOLUME 52 



UNITED STATES GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1951 



For sale by the Superintendent of Documents, U. S. Government Printing Office, Washington 25, D. C. 



Price 20 cents 



