BuL. U. S. B. F., 1908. 



Plate I.XXXIV. 



I-iG. 15. — Placing cheese-clulh rttainers (jver nests containing bass fry abont ready to swim up. Mu^i ul" ilic nc>.ls are 

 seen covered with retainers. When a nest is occupied it is numbered and complete record kept of its different 

 stages. The retainers are to confine the fry for convenience in transferring to other ponds to make room for 

 following broods. (Mammoth Spring station. Arkansas.) 



-Pond drawn down and nest boxes placed for spawning. Area of pond, 55,000 square feet; 50 nests in pond* 

 150 breeding smallmouth black bass. (Mammoth Spring station, Arkansas.) 



