200 First Annual Report of the 



food for the young 'bass. The raceway is screened at the foot 

 to prevent the escape of the large minnows and also at the intake 

 in order to retain the minnows and fry. The different species 

 of minnows spawn at different times, and the best plan is to keep 

 them separate and select those whose spawning period will be 

 as extended as possible. 



Bass fry are also fed upon fish food ground to a consistency 

 suitable for them; but they must learn to eat prepared food, 

 whereas they will take the little minnows without any instruc- 

 tion. When live food is furnished to the bass in sufficient quan- 

 tities the loss from cannibalism is very small. 



At the Chautauqua Station on June 15, 1911, the foreman 

 found some young small mouthed bass naturally hatched which 

 were seven-eighths of an inch long. Very little evidence of can- 

 nibalism was observed among them at that time. The young had 

 plenty of natural food. The adult black bass at the station had 

 not spawned. It is probable that the artesian water was too cold 

 for their nesting. 



On .Tune 10, 1911, the foreman had 17,680 black bass fry in 

 a pond, which were naturally hatched in Chautauqua lake. 

 They were thriving and fed freely on the fry of minnows. 



Pikeperch. 



The work of collecting pikeperch eggs at the Oneida station 

 in 1911 began a week later than usual, and on April 16th the total 

 quantity of eggs in the hatchery was only 84 quarts, containing 

 12,600,000 eggs. The ice was driven away from the mouth of 

 Scriba creek. The wind was strong and cold. The pikeperch 

 were running fairly well, and were somewhat abundant in Scriba 

 creek. 



On April 26th the station had about 900 quarts, or 135,000,000 

 of eggs and had shipped 295 quarts to the Caledonia hatchery, 

 an unprecedented yield for the station at Constantia. The out- 

 put of fry from these eggs was 162,745,000. 



Some of the eggs were shipped to Caledonia in cans, and others 

 in egg cases. Those shipped in cases arrived in as good condi- 

 tion as the eggs sent in cans in the care of a messenger. 



