FORTIETH BIENNIAL REPORT 



31 



Figure 12. Tagging a salmon. One man holcLs the fi.sh in the V-shapert padded trough. 

 The other applies a pair of tag.s. The tag.s are plastic discs, held in place by a ])in or 

 wire which passes through the flesh at the base of the dorsal fin. Tagging at sea, in the 

 delta region, and in the streams gives ineasures of the sizes of the runs and the impor- 

 tance of the various rivers, movements in the ocean, and the time that rvins bound for 

 different streams pass through the fishing grounds. (Photograph by J). II. Fry, Jr., 

 Stani.slfius River near Oakdcile, November, l!)'i7) 



