34 



FISH CULTURE. 



siderable fall in the run of the water, which was 

 very advantageous to us ; nevertheless, the plan here 

 adopted can be applied more or less to any stream. 

 We first bricked up the little rill, so as to form a 

 reservoir (1), and raise the water to a higher level 

 we covered the reservoir in with a large stone, to 

 keep out dirt and vermin, and placed at the lower 

 end of it a zinc shoot (2), over which the stream 



1, reservoir; 2, shoot through which water is discharged; 3, trough 

 to catch the water before it passes into the box : 4, perforated 

 zinc ; 5, shoot to discharge water. 



flowed. Immediately under this we placed our 

 first box, a fac-simile of which is given above. It 

 was made of elm, four feet long and fifteen inches 

 wide in the clear, and ten inches deep. At the 

 upper end of the box, a projecting zinc trough (3) 

 was fixed to catch the water, this trough being 



