THE CULTIVATION OF COARSE FISH. 



379 



fish with human assistance. As you rightly suppose, the box 

 is to be placed in shallow water near the bank, so that the 

 water does not flow over it. Lund has not given any dimen- 

 sions for his box, which may be of any size. The sides are 

 hinged, so that they can be let down, and they are perforated 

 with numerous small holes, so that the water can circulate 

 through. The inside should be charred by fire to preserve 



LUND'S HATCHING-BOX 



it. The bottom of the box and the sides are lined with fir 

 branches. As you will see from the sketch I send you, the box 

 should stand on blocks, so as to be raised a little from the bed 

 of the water. With some modifications for instance, it is not 

 necessary to have the sides hinged Lund's box has been 

 adopted here in Sweden with success, and, in my opinion, for 

 the hatching of perch, it is the most practical that has yet been 

 invented. In a box of this kind, six feet square, and with sides 

 two feet high, we place fifty female and from twenty to thirty 

 male fish. These fish must be placed in the hatching-box as 



