Simple Hatchery for Trout 



is a constant source of trouble and loss. If 

 the eggs get covered with sediment, the water in 

 the trough must be added to night and morning, 

 with a watering can, and the stream through the 

 trough increased. 



The best thing to do with the fry is to place 

 them, at the end of the three weeks, in a pond in 

 which there is plenty of food (first clearing it out 

 of other fish), when they will feed themselves, and 

 grow rapidly or slowly, according to the food 

 supply. 



If the natural food supply is not equal to the 

 wants of the fry, a certain number of the little fish 

 are bound to die. The fry at some hatcheries are 

 fed on a paste (made in worm-like form, by being 

 squeezed through perforated zinc) 

 consisting of beef, or horse (no fat), 

 or liver, pounded, and intimately mixed with the 

 yolks of hard-boiled eggs (nine to each pound of 

 meat) and passed through a wire sieve. 



In some ponds there is sufficient natural food, 

 and the fry do not require feeding. For more 

 complete information on this subject the reader 

 should consult Livingston Stone's "Domesticated 

 Trout," which gives the "dry method" of trout 

 propagation. The foregoing description refers to 

 what is termed the "wet method," the only differ- 

 ence in the two being that the eggs and milt are 

 taken in a dry spawning pan instead of one partly 

 filled with water; and by the dry process one 

 hundred per cent, of good salmon or trout eggs 

 may be impregnated, while by the wet process, 

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