50 



Tliiriij-Firxi Aiiinuil 'Mrrfiiif/ 



are tlien smothered. Wlien laid on the fil)rous roots of water 

 plants this does not occur. 



2. Tlie young remain together in a compact scliool very 

 much smaller than that of the small mouth and the fry usually 

 move all in the same direction. This makes it easy to seine the 

 large mouth fry when wanted. 



CULTURE OF BLACK BASS. 



1. Ponds and Stocl- Fish. 



After some experimenting, all our ponds. l)0th for stock fish 

 and fry, are 1)uilt on the model of a natural ])ond. There is a 



POND DRAWN DOWN WHILE SETTING BEDS. 



central deeper ])ortion or kettle, ahout (i feet deep, and around 

 the shore a shallow area where the water is ahout 2 feet deep. 

 The hottom is the natural sand, and ^^•ater plants are allowed to 

 grow up in the ]:)onds. All ponds are supplied with brook water, 

 and silt from this furnishes a rich soil for the aquatic plants. 

 The water of these ponds contains Daphnia, Bosmina, Corixa 

 and other small aquatic forms in great numl)ers. These furnish 

 food for the bass fry. The ponds run in size from I'^I) feet by 

 190 feet to 100 feet by 100 feet. 



At first we were unable to feed the stock fish on liver, l)ut 

 after a time we found that by cutting the liver into strips of 

 about the size and shape of a large angle-worm and by throwing 

 the strips into the water with the motion that one uses in skip- 



