FERTILISING TROUT EGGS 137 



for eyeing purposes, four or five deep, or even 

 to the rim of the trays. The safety of doing 

 this depends on the character of the troughs 

 and the circulation of the water, for which no 

 specific instruction or rule can be laid down. 

 The knowledge thereof can only be acquired by 

 experience. 



After the fish have been stripped they are 

 placed in buckets, males in one, females in an- 

 other, given a mild salt bath as a preventive 

 against possible infection by fungus, and put 

 back into their pond. 



