18 ARTIFICIAL PROPAGATION 



The following directions, if strictly adhered to, 

 will be crowned with success in the hands of any 

 one : 



The eggs of fish are not sufficiently matured 

 to be successfully impregnated until the fish is en- 

 gaged in depositing the eggs; therefore no attempt 

 should be made to extrude the eggs artificially 

 until the fish has been seen or known to deposit 

 them; but they should be extruded as soon as pos- 

 sible after the fish has commenced depositing them, 

 for the reason that more eggs can be secured. 



The parent fish should be taken with nets 

 while on their spawning beds ; the size of the nets 

 will, as a matter of course, depend upon the size of 

 the stream, or other waters, where the fish are 

 engaged in spawning — for small trout streams the 

 common landing net of the angler is sufficiently 

 large. 



After one or more pairs of fish are thus, taken, 

 they should be placed in a tub or bucket of water; 

 the female is then to be held in the left hand, and a 

 gentle pressure made with the right hand upon her 

 abdomen. At the time of the pressure, the right 

 hand should be carried downward; if the eggs are 

 mature, they will flow from the fish with a very 

 slight pressure, and are to be received in an earthen 

 vessel partly filled with clean water; then treat 

 the male fish in precisely the same manner. The 



