REPORT OF COMMISSIOISrER OF FISH AND FISHERIES. 58 



aquatic i)lants and water lilies, where they found an abundance of 

 natural food. In addition to this several hundred tliousand carp were 

 liberated in the pond, which fell victims to the young bass in two or 

 three weeks. 



During the fall 400 crappie were distributed as the result of the 

 season's spawning. In the spring of 1900 the adults were again 

 placed in two small ponds and, though no definite estimate can be 

 made as to the number of fish on hand, it is believed that the pond 

 will yield several thousand in the fall. 



When making collections of food-fish in the Potomac River a num- 

 ber of sun-fish, Lepoviis pallid us, Avere captured. These spawned 

 in the spring, and as a result 850 young fish were available for distri- 

 bution in the fall. This fish was undoubtedly introduced from the 

 Mississippi River, as it is not indigenous to the Potomac. It is 

 believed that it wiH be well adapted for stocking small inland ponds. 



As in previous years, hundreds of thousands of carp were raised as 

 food for the bass. Some little attention was also paid to the rearing 

 of yellow and green tench for stocking public parks and lakes. 



During September the shad which had been placed in the ponds the 

 previous April were liberated. It is estimated that about 2,000,000 

 passed into the Potomac River. In the following spring 2,849,500 

 shad fry were placed in this pond. They are apparently doing well 

 and will be liberated in the fall. 



Central Station, Washington, D. C. (J. E. Brown in charge). 



Work at this station has been conducted on the same lines as here- 

 tofore, the most important being the distribution of the output from 

 the fish ponds, which amounted to 32,967 young black bass, 400 crap- 

 pie, and 500 sun-fish. These were distributed without loss. There 

 were also received from Wytheville, Va., 600 rock bass and 2,839 

 yearling rainbow trout, and from Erwin 4,931 brook trout. 



During the fall and winter months consignments of landlocked 

 salmon and white-fish eggs were received from various stations of the 

 Commission and hatched for the purpose of illustrating fish-cultural 

 methods. Consignments of shad eggs were also received from Battery 

 and Bryan Point. The following table shows the number of eggs of 

 various kinds received and fry hatched and distributed : 



Species. 



No. of eggs 

 received. 



No. of fry 

 hatched 

 and dis- 

 tributed. 



Rainbow trout 



9,285 



475, (KX) 



10,000 



4,000 



7,896,000 



6,000 



White-fish 



256,000 



Lake trout 



8,368 



Landlocked salmon . . , . 



3,850 



Shad 



7,896,000 







Total . . 



8,394,285 



8,170,218 







