30 
BULLETIN OF THE BUREAU OF FISHERIES 
salmon were roughened by the partial regeneration of a few spines. A marked salmon 
of this type is shown in figure 4. Only a few of the dorsal scars were perfectly smooth, 
showing no signs of regeneration, as seen on the marked salmon in figure 5. The adi- 
Figure 3.— Hood Canal and the south shore of the Strait of Juan de Fuca, Wash. The large dots mark the location of fish 
hatcheries. The pink salmon spawn only in the Hamma Hamma, Duckabush, Dosewallips, and Dungeness Rivers, and 
Morse Creek. 
pose scars, with a few exceptions, were perfectly smooth and showed no signs of 
regeneration. 
A number of pink salmon with only adipose fin scars were also recovered in the 
streams during the survey in the fall of 1931. Thirteen were found in the Duckabush 
