REARING 201 



In cases where it is thought desirable to adopt 

 this method of stocking, great care should be exercised 

 in selecting the spot at which to liberate the fry. A 

 good plan is to take them to a small shallow tributary 

 of the stream or piece of water which is to be stocked, 

 and if you can find a place on this rivulet where 

 watercress grows on either side, turn the fry out here ; 

 not all at once, but a few at a time. 



Assuming, however, that you have decided to 

 grow your fish to yearlings, you must now transplant 

 the fry from the boxes into suitable rearing-ponds 

 prepared beforehand to receive them. I propose to 

 offer a few hints as to these ponds, before passing on 

 to the treatment of the fish which have to spend in 

 them so important a part of their existence. 



PONDS 



Brook-water, as I have said, is more suitable than 

 spring-water for rearing purposes. By spring-water is 

 meant water taken straight from the spring : it is 

 then cold and barren and subject to little variation of 

 temperature, but let it run only for a few yards in its 

 natural course and a new character has been acquired. 

 The water has taken in oxygen from the air, its tem- 

 perature has changed, and it is now charged with 

 animalculoe ; it has, in fact, become brook- water. 



