18 U. S. BUREAU OF FISHERIES. 
approximately 4,000 feet of 18-inch and 16-inch wood stave pipe, 
which was carried on a trestle from 1 foot to 24 feet high, and 1,250 
feet of 6-inch pipe to provide water for domestic use and for fire 
protection. The trestle is made to accommodate a tramcar and 
makes available for station use an excellent supply of firewood and 
lumber, also, after the station has been equipped with a sawmill. 
The work also included repairs to other station buildings and the 
construction of a new launch. The station is now on an operating 
basis again, and fish-cultural work will be resumed during 1922. 
During the fiscal year 1920 a system of feeding young salmon 
that had been in successful operation in the Washington field for 
some time was tried at the Yes Bay station. An arm of McDonald 
Lake, locally known as McDonald Slough, was temporarily screened, 
and a considerable number of young sockeye salmon were placed 
therein. The fish were fed regularly on salted salmon and made a 
very excellent growth. The results of the experiment were so satis- 
factory that piling has been driven to make the feeding inclosure 
a permanent feature of the station’s work. 
BAKER LAKE (WASH.) STATION AND SUBSTATIONS. 
[J. R. RUSSELL, Superintendent. ] 
Necessity for economy has compelled the suspension of fish-cul- 
tural operations at three of the field stations in the Washington 
group in the past two years, and this has tended to reduce the output 
in that region. The combined output of the Washington stations for 
the fiscal year 1921, exclusive of Quinault, is 36,873,015, against 
33,086,750 for the preceding year, 20,393,315 of the 1921 figures rep- 
resenting fingerlings, as opposed to a production of 9,842,350 finger- 
lings in 1921. 
BAKER LAKE (WASH.) STATION. 
Of particular interest in connection with the fish-cultural work in — 
this field was the excellent run of sockeye salmon at Baker Lake. The 
run began on July 1, when 115 adult fish were taken, and continued 
to August 13, the peak of the run occurring between July 20 and 24. 
A total of 7,850 spawning fish were taken. The spawning period ex- 
tended from October 10 to November 30. About 46 per cent of the 
total brood stock, or 3,645 fish, proved to be gravid females and 
yielded 11,750,000 eggs. This is the largest collection of sockeye- 
salmon eggs obtained at Baker Lake, exceeding last year’s record 
collection by 600,000. The incubation period was unusually pro- 
tracted, the first fry appearing on April 1, nearly three months later 
than in the preceding year, and hatching operations were not com- 
pleted until May 31. The long incubation season was attributable to 
low water temperatures, brought about by cold spring weather and 
jate snowstorms in the mountains. Apparently there were no ill 
effects to either eggs or fry, as the loss of eggs amounted to only 3.6 
per cent, while the fry hatched seemed to possess the usual vigor. 
Though it has not been possible to replace all equipment destroyed 
by the fire of last year. all of the fry produced were retained in the 
hatchery troughs to the end of the sac stage, this being effected 
through the use of the stacked-tray system. There remained on hand 
