250 BULLETIN OF THE BUREAU OF FISHERIES 



Table 26. — Chinook-salmon fingerlings marked at Big White Salmon River hatchery June 12, 192S 



This experiment has produced a greater number of returns than any other 

 experiment with chinook sahnon. A total of 4.53 fish (0.45 per cent of the number 

 liberated as fingerlings) has been recovered. Four that matured during their second 

 year were taken near Astoria during August, 1924. Sixty-two 3-year-olds were 

 taken in the commercial fishery during the season of 1925; an additional 25 returned 

 to Spring Creek that season, and 1 ran into the Big White Salmon River. Ten of 

 those reported from the commercial fishery were taken by troll in the ocean. During 

 the season of 1926 two hundred and seventy-one 4-year-olds were recovered — 230 

 in the main Columbia River, 5 in the ocean, 33 in Spring Creek, and 1 in each of three 

 tributaries that empty into the Columbia not far from the mouth of Spring Creek. 

 Five-year-olds recovered during the season of 1927 totaled 90; 66 were reported from 

 the commercial fishery and 24 ran into Spring Creek. One also was reported from 

 the Little White Salmon River egg-taking station, but as the scars showing which 

 fins were lacking were not preserved this report is not presented as a valid record of 

 the recovery of a marked fish. A few 6-year-olds from this experiment may be 

 recovered during the season of 1928. 



Nearly all of the adult fish recovered from the commercial fishery were found 

 after they had reached the canneries. As a result it was generally impossible to 

 determine just where the fish were caught. As the recoveries for which the exact 

 place of capture was reported are too few to be of any significance, the data from the 

 commercial fishery have been grouped into three general localities — (1) the ocean, 

 (2) the lower Columbia, which includes from the mouth of the river to Vancouver, 

 Wash., and (3) the upper Columbia, including the portion of the main Columbia 

 from Vancouver to the upper limit of the commercial-fishing district. The recoveries 

 are tabulated according to place and date of capture in Table 27, 



