112 DOMESTICATED TROUT. 



he was formerly obliged to, lest the milt should become 

 worthless before the eggs were secured, or vice versa, 

 for by the dry method he can have time enough. And 

 the other is, that when there is danger that the milt 

 will run short on any day, the surplus milt of previous 

 more favorable days can be bottled up and kept for 

 the emergency, when the day's supply of milt proves 

 insufficient. 



PROCESS OF IMPREGNATION. 



Let us now return to the subject more particularly 

 before us, namely, the modus operandi of impregnating 

 the eggs. The process is very simple. Having se- 

 cured the fish and sorted out the ripe males and the ripe 

 females, take a female and express the eggs from her 

 into a dry pan, according to the directions on page 85. 

 It was formerly thought that more than one layer of 

 eggs was too much for a pan, but with the dry impreg- 

 nation method a half dozen layers, or even more, can 

 be safely taken, provided it is done quickly enough, 

 and the milt supply is sufficient, and is thoroughly 

 mingled with the eggs. Then take the milt from 

 the male. One good one is enough. Shake the pan 

 gently and tilt it at each end alternately, so as to mix 

 the milt and eggs as thoroughly as possible. This will 

 be easily accomplished, as the little water which falls 

 from the fish into the pan, and the capillary attraction 

 of the mass of eggs, will assist the dissemination of 

 the milt. 



After giving the spermatozoa and eggs time enough 

 for thorough contact, but before the eggs set, pour on 

 water to the depth of an inch or two. Stir well and 



