United States Department of the Interior, Fred A. Seaton, Secretary 

 Fish and T/ildlife Service, Arnie J. Suomela, Conrassioner 



USE OF DIAGNOSTIC X-RAY FOR 

 DETEPJIINIICr VERTEBRAL NUIIBERS OF FISH 



by 



Doyle F. Sutherland 



Fishery Research Biologist 



Biireau of Cornmercial Fisheries 



Special Scientific Report — Fisheries ifo. 2l|U 



l-Jashington, D. 

 March 19^8 



