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

 FISH AND WILDLIFE SERVICE, Albert M. Day, Director 



FACTORS INFLUENCING THE ORIENTATION 

 OF MIGRATING ANADROMOUS FISHES 



By Gerald B. Collins 



FISHERY BULLETIN 73 



From Fishery Bulletin of the Fish and Wildlife Service 



VOLUME 52 



[Contribution No. 585, Woods Hole Oceanographic Institution] 



UNITKD STATES GOVERNMENT PRINTING OFFICE • WASHINGTON : 1952 



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



Price 20 cents 



