130 FISH CULTURE 



to result in its death. After observing many 

 methods I am of the opinion that the best is to 

 use one of the double hatching-troughs, so that ' 

 if a fish slips, it will fall, not on the floor, but 

 into the water. 



Choosing, then, one of the hatching-troughs 

 for spawning purposes, the females are placed 

 in one section and the males in another, the 

 dams in each section having been previously so 

 set that there is about six inches depth of water. 

 A hatching-screen is set endwise in each section 

 and fastened about two feet from the lower part, 

 so as to confine two or three dozen fish in that 

 space. A spawning-pan is made ready and set 

 on a board midway on the trough. If there are 

 a very great number, one man is assigned to 

 handle the females ; a second, the males ; and a 

 third to care for and dispose of the fish after 

 they have been stripped. 



Before being placed on the board between the 

 strippers, the spawning-pan is submerged for a 

 moment or two in water, then allowed to drain 

 off until only a few drops remain on the sides 

 and bottom. This act seems trifling, but it is 

 nevertheless important. If the eggs were 



