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FISH FARMING I 



Having obtained a suitable building, the nsxt matter is to 

 < quip it after a proper manner. The first consideration is the 

 method of making the stands on which are placed the filter, 

 the distributing box, and the hatching boxes. As I have al- 

 ready pointed out, these should be of a thoroughly substan- 

 tial character, and of all forms of stand I much prefer those 

 made of strongly-framed, well-seasoned wood. Err, if at all, 

 on the side of strength, for nothing is more likely to causa 

 trouble than shakily contrived stands. Each season these 

 stands should be carefully overhauled, cleansed, and varnished 

 as, indeed, the whole of the apparatus used should be. 

 If th3 extent of hatching boxes is such as to occasion the lower 

 boxes to be too near the floor of the hatchery, then such 



'SCI 



i. jj Fig. 27. Plan oi Filtering Box. 



floor should be made to fall at the same gradient as thait 

 formed by the boxes. From 3ft. to 3ft. Gin. is a convenient 

 distance from the floor at which the top of the hatching boxes 

 should be. 



The first important item of apparatus is the filtering box, 

 and the principal matter in connection with its construction 

 is to make sure that its capacity is amply sufficient to cope 

 with any call that may be made upon it. Its actual size is 

 determined by the amount of waiter required for hatching pur- 

 poses, and its capacity should be such as to provide an output 

 of quite half ag much again water in addition to the actual 

 quantity required. If the quantity of water required is very 

 great, then two, or more, filtering boxes of moderate size are 

 to be preferred to one of very large size. Of course, if the 

 water supply is obtained from a spring, or other source that 

 needs no filtration, ai filtering box is unnecessary ; but. 



