6o 



TROUT CULTURE. 



It being impossible, by any vaticinatory power, for 

 the author to foresee all the circumstances of even the 

 bare majority of cases in which such operations are to 

 be worked, he must content himself with general 

 remarks, adding a few sketches from fancy to act as 

 guides to his readers. 



Firstly, then, the deeper the water (in reason), the 

 better and deeper will be the shape of the fishes ; also 

 they have more time to catch the food in its descent, 

 of which they will not be slow to take advantage, the 

 stronger feeding nearest the surface, and the weaker 

 below them. This depth, however, must be controlled 

 by the necessity of so regulating it that nearly all the 

 water can be run off when desired by the side-cutting, 

 for purposes named above. 



All gratings should be sloping with the stream, 

 exactly as in the feeding boxes above described, 

 though the angle may be 45 or 50 from horizontal ; 

 this allows of a weak fish getting off them, if carried 

 down by the current, especially if a " dead water 

 board," on the same principle as a sluice, be placed 

 below. The size of the zinc or iron wire used to act 

 as a screen and prevent the exit of the fishes, must, of 

 course, be determined by their size. So long as safe, 

 the freer the current the better ; but much must, in 

 all cases, be left to the common sense of the owner. 



SOLE PLATE 



