EXPERIMENTS IN FEEDING FRY. 
BY DR. JAMES A. HENSHALL. 
In compliance with a suggestion from the secretary of the 
society I offer a brief paper in continuation of the subject of 
experimental feeding of grayling and other fry; but as the 
period has been so short from the hatching of the fry until the 
preparation of this paper, I have not much additional informa- 
tion to offer. 
It is a self evident proposition that by following Nature’s 
methods as closely as possible in fish culture, we will be more 
successful than by putting into practice mere abstract and the- 
oretical ideas. And this can be accomplished only by closely 
observing Nature’s ways, and preserving as nearly as possible, 
natural conditions. 
In accordance with this principle it is a wise plan to begin 
the feeding of fry before the yolk-sac is entirely absorbed, for 
it is reasonable to suppose that fry at that stage are as much in- 
clined to feed as sea-anemones and certain mollusks that are, 
like Prometheus, firmly bound to a rock, and only obtain their 
food from the water flowing over them. By this method of feed- 
ing, the fry are much stronger when the sac is finally absorbed, 
and in better condition to take and assimilate artificial food. 
This applies more particularly to fry that are supplied with 
water flowing directly from springs, which contains no natural 
food. This method, I think, is now the common practice, and 
has been followed for several years. Where stream water is 
utilized in hatcheries, it contains more or less natural food, and, 
so far as it goes, is one of the conditions observed in Nature. 
At the last meeting of the society I presented a brief paper 
on feeding alevins with blood, and also on feeding it to free- 
swimming grayling fry. These experiments were quite success- 
ful last year and were continued the present season, and blood, 
ground with liver in a power chopper, was also more eagerly 
taken by trout fry than when liver and water emulsion was 
furnished. 
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