UNITED STATES DEPARTMENT OF THE INTERIOR, Fred A. Seaton, Secretary 

 FISH AND WILDLIFE SERVICE, John L. Farley, Director 



iLIDITY OF AGE DETERMINATION FROM 

 SCALES, AND GROWTH OF MARKED 

 LAKE MICHIGAN LAKE TROUT 



By LOUELLA E. CABLE 



FISHERY BULLETIN 107 



From Fishery Bulletin of the Fish and Wildlife Service 



VOLUME 57 



UNITED STATES GOVERNMENT PRINTING OFFICE • WASHINGTON : 1956 



For sale by the Superintendent of Documents, U. S. Government Printing Office 

 Washington 25, D. C. - Price 45 cents 



