REPORT OF THE COMMISSIONER OF FISHERIES. 31 
\ 
ber, 1903, they yielded 9,000 eggs, from which 4,930 fry were hatched 
in April and May. The parent fish had been dieted several months 
preceding their spawning, being fed very sparingly for a time and at 
last subjected to a lengthy fast, but this did not suffice to insure prime 
quality in the eggs, which distinctly lacked normal vigor. It has been 
suggested that to secure good results it may be necessary to supply a 
more natural food than the hogs’ plucks, on which the fish have sub- 
sisted all their lives. Another brood of landlocked salmon hatched in 
1901 is held to secure data as to the comparative rate of growth and 
eventual size of fish derived from Grand Lake Stream and Lake 
Auburn. 
A small number of albinos was discovered among the landlocked 
salmon hatch of 1903, and at the end of the year these fish were 
apparently healthy and vigorous, 25 remaining out of the original 28. 
At the Baker Lake station, in Washington, it has always been a 
very difficult matter to trap the fish which pass through the lake and 
ascend the tributary streams to spawn, owing to the fact that these 
tributary streams are of glacial origin, flow through a narrow gorge, 
and are subject to such tremendous floods that no fish racks can with- 
stand them. Upon the recommendation of the superintendent a trap 
similar to that used on Puget Sound was conveyed in sections over a 
pony trail to the lake, put together, and set up in a depth of from 1 
to 60 feet at low water, the piling and webbing being made 15 feet 
above low-water mark to insure the capture of fish during high water. 
Tt was set at the outlet of the lake, and although not installed before 
the run of fish had begun, its practicability was demonstrated and the 
product of the station was doubled. Still greater results may be 
expected the coming season. 
As the fish were caught when entering the lake, most of them were 
unripe. Two inclosures were therefore constructed for holding the 
unripe fish—one of webbing and piles 100 feet wide by 200 fect long, 
with an average depth of 6 feet during low water; for the other a 
slough which flows into the lake was utilized. This slough has a large 
and constant, though very sluggish, flow of water through it, and con- 
tains deep holes. There was no apparent difference in the quality of 
the eggs, but the fish held in the former inclosure were continually 
working against the webbing and became more or less fungused. This 
was especially noticeable among the male fish, many of which became 
caught in the webbing by their teeth. The fish in the slough inclosure 
lay quietly in the deep holes, making no effort to escape, and were in 
perfect condition at the time of spawning. Many of the fish were 
thus held for two months, and there was no apparent difference between 
their eggs and the eggs of those which were found ripe and stripped 
immediately after being caught. This is the first occasion on which 
