PROPAGATION AND DISTRIBUTION OF FOOD FISHES, 1921. 19 



at the close of the fiscal year 4,000,000 of these young salmon, which 

 will be reared to a larger size before liberating. In connection wuth 

 its rearing operations the bureau is indebted to the fish and game 

 authorities of the State of Washington, which furnished without 

 charge 1,000 cases of canned salmon " do-overs" to be utilized as food 

 for the fish. 



The improved run of sockeye salmon in Baker Lake seems espe- 

 cially noteworthy from the fact that for more than 20 years the main- 

 tenance of the run of this species has depended ahnost exclusively on 

 artificial propagation. It has been the custom at this point to trap 

 all fish as they enter Baker Lake from the river and transfer them to 

 an inclosure near the head of the lake, where they are held until 

 ready to spawn. Thus, only the comparatively few fish which occa- 

 sionally escape the trap during high-water periods spawn naturally 

 in the lake. 



In addition to the sockeye-salmon operations 700,(X)0 silver-salmon 

 eggs were taken between November 17 and December 15. In jiureu- 

 ance of the adopted policy of reserving Baker Lake so far as ])ossible 

 for the propagation of sockeye salmon, the.se eggs were transferred 

 to the Birdsview hatchery immediately after being eyed. 



nruDsviKW (wash.) substation. 



The work of the Birdsview substation, on tlie Skagit River, was 

 also successful. Its outi)ut of chinook sahnon was larger than in any 

 previous year, and tlie collections of silver and steelhead salmon 

 eggs were above the average. This sulistation is now dejiendent 

 on the fish that enter (Jrandy Creek for its egg collections. The 

 trap in Phinney Creek, formerly a valuable egg-producing stream, 

 was destroyed by floods two years ago, and since that time funds for 

 its replacement have not been available. The success of the work at 

 this point is attributed largely to the favorable water stages which 

 prevailed throughout the spawning season. The streams in this 

 locality are subject to sudden and violent fluctuation, and not in- 

 frequently at the spawning season the water is at such a low stage 

 as to make the ascent of fish difficult, if not impossible. Of passing 

 interest is the collection of 1.3.500 sockeye-salmon eggs from fish 

 taken in (Jrandy Creek, the result, apparently, of plants of that 

 species made by the bureau in Grandy Lake. 



BRINNON, DlCKABl'SH, AM) gUILCKNE (WASH.) SUBSTATIONS. 



The propagation of chum salmon at the three substations on ITood 

 Canal — r>rinn()n, Duckabush, and Quilccne — was unusually successful 

 from the standpoint of egg collections and numbers of fry pro- 

 duced. Thirteen million eggs of this sjiecies, taken in Walcotts 

 Slough, at the Brinnon substation, represented the largest number 

 of eggs taken in that region. The egg collections do not accurately 

 represent the numbers of spawning fish in the streams, since many 

 eseaped during the high-water stages, which were frcHjuent during 

 the spawning period and adversely affected the work at all |)oints 

 on the canal. 



There are two distinct runs of chum salmon in the tributaries of 

 Hood Canal. The spawning of the first, oi- siunmer run, occurs 



