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 preci pol v the same manner. The 



