236 A GREAT FACT. 



clean gravel from the river, and as much river 

 water as will cover the gravel, and the seed about 

 to be deposited in it. The female salmon just 

 captured must be held up by the head over the 

 vessel with one hand, whilst with the other hand 

 gentle pressure is made down the belly of the fish. 

 This pressure will cause the expulsion of all the 

 ova that are mature, which will be received in the 

 vessel. The male fish is then to be held and 

 pressed in the same way, which will cause the 

 emission of mature milt into the vessel. The fish 

 are to be returned to their native element, where, 

 if the manipulator be not a rough one, they will 

 speedily recover, and when the remaining spawn, 

 not artificially forced from them, becomes mature 

 they will deposit it as if nothing had happened. 



Having expressed ova and milt into the vessel, 

 it must be shaken so that gravel, water, milt and 

 ova be properly mixed, and that no ova escape 

 from coming into contact with portions of milt. 

 If any do they will not be impregnated. On the 

 contrary, the ova that are touched by the milt 

 are impregnated, and if properly cared for will in 

 due time produce young salmon. 



I solicit the attention of the owners of rivers 

 to the following great fact : — Salmon-spawn arti- 

 ficially expressed from parent fish, and treated in 



