UNITED STATES DEPARTMENT OF THE INTERIOR, Douglas McKay, Secretary 

 FISH AND WILDLIFE SERVICE, John L. Farley, Director 



CAUSES OF FLUCTUATIONS IN 



ABUNDANCE OF CONNECTICUT 



RIVER SHAD 



By Reynold A. Fredin 



FISHERY BULLETIN 88 



From Fishery Bulletin of the Fish and Wildlife Service 



VOLUME 54 



UNITED STATES GOVERNMENT PRINTING OFFICE • WASHINGTON : 1954 



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

 Washington 25, D. C. Price 15 cents 



