80 PEACTICAL TROUT CULTURE. 



right hand grasping the head," the pressure of the 

 thumb and forefinger falling just behind the gills. 



FIG. 16. 



The effect of this will be thai the eggs, acted 

 upon both by gravity and the muscular contrac- 

 tion induced by the position, will fall downward 

 toward the vent, and sometimes a few will be 

 ejected ; it is therefore well to hold the fish above 

 the impregnating pan, that all ova may be saved. 



The method of holding the female during the 

 process of artificial spawning varies greatly with 

 different operators. Each of course prefers his 

 own plan, yet in principle all are the same. The 

 eggs, it must be remembered, are not squeezed out, 

 as is the general impression among those but little 



