36 REPORTS OF THE DEPARTMENT OF COMMERCE. 



allotments, and carload shipments have in addition been made to 

 various national forests, the deliveries bein^ to officers of the Forest 

 Service who superintended the planting of the fish. 



The demand for rainbow trout is next to that for the brook trout. 

 Considerable collections of eggs have, as usual, been made from 

 domesticated fish held in ponds at the Wytheville, Erwin, White 

 Sulphur Springs, Manchester, and Neosho stations, but the bulk of 

 the eggs — namely, 7,357,100— has come from wild fish in Montana, 

 Wyoming, and Utah. A new and very promising field for collecting 

 eggs of wild rainbow trout has been located in Sage Creek, Wyo., 

 about 70 miles from the Saratoga station. The Madison Valley 

 field in Montana, operated from the Bozeman station, was unusually 

 productive, and 3,935,000 eggs of exceptionally good quality were 

 secured, an increase of nearly a million over the record season of 

 1918. The collection of grayling eggs in this same locality was the 

 smallest for a number of years. 



The landlocked salmon is in great demand in its native State of 

 Maine and in various States to which it is not indigenous. The 

 sources of egg supply in 1919 were Green Lake, Fish Iliver Lakes, 

 and Grand Lake Stream, the number of eggs obtained being 213,000, 

 914,000, and 345,000, respectively. The first duty of the Bureau 

 as regards landlocked salmon is to maintain the fish in its home waters. 

 As these waters are extensive and many of them are depleted, and 

 as the number of fish available for distribution is limited, many appli- 

 cations from outside States have had to be refused. 



The available supply of basses, crappies, sunfishes, etc., has been 

 about the average of recent years. The Mammoth Spring station, 

 the principal source of smallmouth black bass, suffered a serious 

 reduction in output owing to the loss of brood fish by flood. The 

 extension of facilities for black-bass culture is constantly in progress, 

 but the demand can not be adequately met with the existing stations, 

 and an increase in bass stations is needed, particularly in the south- 

 western section of the country. 



In the second season's operations at the temporary field hatchery 

 on the Atchafalaya River in Louisiana, the output of buffalofish 

 was materially increased. From fish caught for market the Bureau's 

 agents, in cooperation with the State department of conservation, 

 were able to save 136,200,000 eggs, from which 110,940,000 fry were 

 hatched. Extremely unfavorable weather interfered with the work 

 and reduced the output. 



CARP CULTURE. 



Carp culture, discontinued many years ago, has been resumed, 

 as yet on an experimental scale, on Lake Erie in response to a strong 

 local demand from carp fishermen and carp dealers. The western 

 end of the lake is the scene of extensive carp fishing, in connection 

 with which there are maintained large inclosures in which carp are 

 held alive pending shipment to market. The Bureau's operations 

 consist in taking eggs from the fish caught in seines in the Portage 

 River, Ohio, which would otherwise be lost, and hatching them at 

 the Put-in Bay station, the fry being returned to the local waters in 

 which the carp spawn naturally. During the fiscal year 1919 

 the young carp thus produced and liberated numbered 22,800,000. 



