ABSTRACT 



Diagnostic X-ray equipment and supplies are described and 

 methods given for resolving vertebral centri of meniiaden larger 

 than approximately one -half inch in length. Only a minijnum 

 amount of technical knowledge is necessary to produce satisfac- 

 tory radiographs from which vertebral counts can be made, thus 

 reducing the time required to determine the vertebral nuinbers 

 of large samples of fish and forming a frxed impression of the 

 vertebrae which can be conveniently stored for future reference. 



