68 THE NEW ART OP BREEDING FISH. 



has enabled me to feed easily, and at small expense, 

 and to bring up in a space 55 centimetres long, 15 

 wide, and 8 deep, as many as 2,000 young salmon 

 at once. The muscular flesh of boiled beef, which, 

 by being pounded, grated and cut, is reduced to par- 

 ticles proportioned to the size of the little animals it 

 is to nourish, flesh reduced to that state that it will 

 stick together in a mass but can be with greatest 

 ease separated into the smallest particles, I have 

 found, up to this time, the most suitable food for 

 very young fish just beginning to feel hunger. 



Experience shows that this food is better for 

 them than calves' liver cooked, or beef's blood boiled. 

 These substances are not sought by young salmon 

 and trout with the same avidity as muscular fleshy 

 fibre, prepared as I have just described. They pre- 

 fer even the raw flesh of white fish pounded in a mor- 

 tar, with which, for two years, Messrs. Berthot and 

 Detzem fed and brought up those confined in the 

 reservoirs of the establishment at Huningen. This 

 flesh of fish, well pounded, breaks up, as does that 

 of boiled beef, into vermiform particles, for which 

 young salmon show great liking. 



As for the rest, whichever among these aliments 

 may be the one adopted, if the little fish intended 

 to be reared to the size at which they may be trans- 

 ported, are kept in narrow, artificial streams, or in 

 large vessels, wherein the water though changing has 

 not a rapid current, care must be taken, in order to 

 avoid accidents easy to foresee, to cleanse from time 



