Rearing. 67 



building tanks, or by keeping them in boxes in 

 running streams, or by turning the fry into the 

 open stream, and confining them within safe 

 limits by screens at each end. 



Where a comparatively small number of fry 

 have to be dealt with, or only a few are kept for 

 show, the tank system proves very useful. It 

 merely consists in building large tanks of wood, 

 glass, or slate, in or near the hatching-house, or 

 in some convenient spot, placing a perforated 

 screen over the outlets, and running over the 

 fry a good supply of unfiltered water ; the more 

 this is charged with animal life the better, as 

 the young trout will thus find a constant 

 suitable stream of food flowing over them, 

 amidst which they will have a good selection of 

 varied diet of the best and most natural form. 

 In addition to this, however, they should have 

 regular meals of artificial food ; but of this more 

 anon. 



Boxes in streams, with screens of zinc or iron 



F 2 



