PROPAGATION OF FISH. 251 



ered alive and healthy at the place of destination. For 

 more accurate information it would be better to commu- 

 nicate with him direct, and his breeding apparatus is 

 well worth a visit. 



Besides the trout and salmon the only other fresh 

 water fish worth breeding is probably the black bass. 

 There are many localities where the water is too warm 

 or quiet for trout, which demand cold and rapid currents 

 flowing from fresh springs. The black bass will thrive 

 in almost any clear pond with, a pebbly or sandy beach 

 on which they can deposit their ova. Like all the perch 

 family, they spawn in April and May, and hatch in a 

 much shorter time than trout, or in about two weeks ; 

 they build their nests in the sand, and extrude the milt 

 and roe by pressing upon or between roots and stones, 

 and either cover or leave exposed their eggs. They may 

 be treated in the same manner as trout, but do not 

 require the running water nor one half the care and 

 attention. Their increase is still more rapid. 



Undoubtedly the mascallonge could be acclimated and 

 treated in the same manner, and the striped bass might 

 be introduced into and confined to the fresh water with 

 eminent advantage. 



There is also an opportunity for novel and interesting 

 experiments in the crossing of various species, upon 

 which there is little definitely known except that it can 

 be done. The spawn of trout has been impregnated with 

 the milt of salmon and has produced young, but what 

 the young were, and whether they were capable of 

 breeding among themselves, is not settled. 



Salmon give a much greater quantity of eggs than the 



