486 V' S. BUREAU OF FISHERIES 



The Hartsville, Mass., station handled its normal quota of trout, of 

 which several thousand were consigned to eight cooperative nurseries 

 operating in Massachusetts and Vermont. There were 778,000 small- 

 mouth black-bass fry collected from Wangum Lake in cooperation with 

 the State of Connecticut under the same agreement as heretofore. 

 Eight circular trout pools 22 feet in diameter are being constructed 

 under the auspices of W. P. A. 



In Maine the Craig Brook station collected 3}^ million brook-trout 

 eggs, of which number approximately 2 million were shipped to other 

 Bureau units. A limited number of rainbow and lake-trout finger- 

 lings were distributed. The Acadia National Park was furnished 

 105,000 large fingerling fish to compensate them for the construction 

 of circular rearing pools built at this station. The old plank conduit 

 from the spring was replaced with a new iron soil-pipe line. 



COMBINATION TROUT AND PONDFISH STATIONS 



Owing to the overlapphig of the range of trout and warm-water 

 species, such as bass, a number of hatcheries propagate both. How- 

 ever, most of the establishments in this category are principally con- 

 cerned in the propagation of trout, and the output of pondfish is very 

 limited. 



At the I^eetown, W. Va., station, a reservoir and 20 ponds, 50 feet 

 wide and varying in length from 150 to 600 feet, were excavated. 

 The concrete dam and outlet box for the reservoir and the necessary 

 kettles for these ponds were also constructed. Several thousand trout 

 5 inches long were distributed, most of which were released in the 

 waters of the Monongahela and George Washington National Forests. 

 Experiments in the feeding of various kinds of food to adult trout 

 were carried on in order to determine the elTects of different diets upon 

 the quality of the eggs. Experiments in the stocking of warm-water 

 rearing ponds with blunt-nosed and black-head minnows and golden 

 shiners were conducted for the purpose of determining how many of 

 the above forage minnows should be stocked per acre of water. 



The selective breeding of rainbow trout was continued at the 

 Neosho, Mo., station. This selective breeding has accomplished one 

 object in that during the last season more eyed rainbow eggs were 

 produced from a smaller number of brood stock than in any previous 

 year in the history of the station. The output of pondfish approxi- 

 mated the normal average. The culture of daphnia magna was 

 successfully carried on during the spring months. 



At the Bourbon, Mo., substation, operated on a cooperative basis, 

 the production of rainbow-trout eggs was approximately 50 percent 

 in excess of last season and 10 percent more than any previous year. 



The pond system has never been completed at the Flintville, Tenn., 

 station, consequently the propagation of pond species is limited. The 

 output of trout was normal and sufficient to take care of the demands 

 in that territory. N. Y. A. employees built picnic areas for the benefit 

 of the visiting public. 



The operations at the Erwin, Tenn., station were largely of a routine 

 nature, and the production of trout and pondfish was comparable to 

 that of last year. 



The Cape Vincent, N. Y., station, and its substations at Cortland, 

 Watertown, and Barneveld, contributed approximately 2 million trout 



