86 KEPORT OF THE SECRETARY OF COMMERCE 



legislature has established a series of test streams in which experi- 

 mental plantings of various species of trout have been made and a 

 careful check of the results of these plants has been obtained through 

 a system of anglers' reports. A similar test stream has been under 

 observation in Virginia to determine the production of rainbow 

 trout in relation to the number of fish planted and the abundance of 

 natural food. In California studies of a number of streams and 

 lakes in the high Sierras and in the coastal region have been con- 

 ducted in cooperation with the State authorities. Particular atten- 

 tion has been given to the management of runs of steelhead trout 

 in coastal streams and to the proper stocking and management of 

 mountain streams. Efforts have been directed toward the stocking 

 of more heavil}^ fished waters with fish larger than those commonly 

 used, and a strain of nonmigratory rainbow trout is being developed 

 at the experimental hatchery. 



COOPERATION WITH OTHER FEDERAL AGENCIES 



Various members of the technological, economic, and statistical 

 staffs of the Bureau have assisted other Federal agencies where the 

 work or studies of such agencies required information or advice con- 

 cerning the fishery industry. The Bureau also has continued the 

 collection of statistics of cold-storage holdings of fish in cooperation 

 with the Bureau of Agricultural Economics, Department of Agri- 

 culture; the collection of data on landings at the Municipal Fish 

 Wharf and Market in Washington, D. C, in cooperation with the 

 District health authorities; and the collection of statistics on the 

 quarterly production and holdings of fish oils for the Bureau of the 

 Census. Studies were conducted in cooperation with the Bureau 

 of Chemistry and Soils and the Food and Drug Administration, in 

 connection with the development of standards for halibut-liver oil 

 as required in the administration of the Federal Food and Drug Act. 



Excellent cooperative relations have been maintained with Federal 

 agencies concerned with the administration of wildlife or of areas 

 supporting wildlife. 



The Bureau has assisted the Tennessee Valley Authority in work- 

 ing out a general program of fisheries conservation and specifically 

 has supervised the construction of a small hatchery at Norris Dam, 

 supplementing this by allotting a number of consignments of fish 

 from the Marion, Ala., hatchery. 



The Resettlement Administration has constructed a first-class small 

 hatchery at its Hoffman, N. C, project, and operating responsibility 

 was being assumed by the Bureau at the close of the year. 



Even closer contact has been developed with the Forest Service, 

 and there has been an expansion in the number of fish-rearing units 

 in national-forest holdings. Plans have been developed for the 

 provision of fish-cultural facilities at the Bureau of Reclamation's 

 Elephant Butte Reservoir, in Arizona. 



The work of maintaining good fishing in national-park waters has 

 been prosecuted vigorously with the sympathetic cooperation of the 

 National Park Service. 



Cooperation with the United States Forest Service in the manage- 

 ment of fishing waters during the past year has been very effective 



