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plentiful off the Illinois shore, and commercial fishermen going out of 
Chicago and other Illinois points farther north caught them in great 
numbers. In recent years the Chicago market has had to depend upon 
the more northern waters for this fish. 
Wisconsin, realizing the commercial value of the lake trout, has 
established two pretentious hatcheries on her lake shores where millions 
of fry of this fish are hatched annually. While our interest in good 
lake trout waters is not equal to that of Wisconsin, there is nevertheless 
good reason why Illnois should maintain a hatchery on Lake Michigan 
devoted partly to the hatching of this important fish for the stocking of | 
Lake Michigan. 
In view of the fact that the lake trout is a fall spawner, the hatch- 
ing may be done in the winter time in a hatchery used for the additional 
purpose of hatching the spawn of spring-spawning fish. 
Whitefish. 
WHITEFISH. 
There is comparatively little whitefish in the State of Illinois. 
Off the northern shore of Lake Michigan these fish will thrive, and they 
would do well lower down were it not for the pollution of Lake Michigan 
off Chicago. 
Because of the quality of the white fish, it is important that some- 
thing be done to replenish the waters of Lake Michigan at such points 
as this fish will do well. 
In a hatchery where lake trout are hatched in trays, these fish, which 
spawn in the fall, may be hatched at the same time in jars at a very 
small additional cost. 7 
A suitable hatchery for the hatching of lake trout in trays and 
white fish in jars in the winter time, and pike-perch in the spring, can 
be maintained on the shore of Lake Michigan at a comparatively small 
cost. 
The taking of spawn and the distribution of fry can be done with 
our own boats without the necessity of costly transfers. 
