536 U. S. BUREAU OF FISHERIES 



authorities for the cooperative management of a substation at Cort- 

 land, N. y., to be devoted to fish-cultural research, and for the con- 

 duct of pond-cultural experiments near the city of Rochester, with 

 the view of demonstrating the possibilities of local or community 

 fish-cultural operations. A statement of further details along this 

 line appears unnecessary, but the bureau feels that the sentiment in 

 practically all of the States is such that when occasion arises coopera- 

 tive relations of mutual benefit may be developed. 



The bureau has been privileged to assist in the work of several of the 

 larger public aquaria in the country and has received courtesies in 

 kind. 



The activities of the division of fish culture have contact to a 

 limited extent with other Federal agencies, notably the Forest Service, 

 the National Park Service, the Indian Service, and the Bureau of Recla- 

 mation. The Bureau of Fisheries has assumed responsibility for the 

 greater part of all fisheries work involved in the maintenance of wild 

 life in the national parks. Two hatcheries are now maintained 

 exclusively for that purpose and a third, in the Mount Rainier Na- 

 tional Park, is nearing completion. The vast national forest areas 

 are to a great extent desirable game fish waters, and obviously it is a 

 function of the bureau to maintain the fish population in this part of 

 the public domain. While fish from the bureau's hatcheries have 

 been allocated for stocking national forest waters for many years, such 

 plantings have been of a more or less haphazard character, lacking the 

 basis of a clear understanding of what was required and feasible. In 

 addition to surveys of national park waters during the year, the bureau 

 sent out several field parties to study selected national forest areas 

 and formulate a stocking policy which may be adhered to in future 

 distributions. Thus far such activity has been confined to the Rocky 

 Mountain States, being centered in Utah, Idaho, and Colorado. 

 It is the present policy to continue this work indefinitely, constantly 

 extending it into new areas, until the vast domain of the national 

 forests has been adequately charted in so far as fish life and the 

 requirements for fish stocking are concerned. 



The bureau again received assistance from the Indian Service in 

 connection with the collection of black-spotted trout eggs at Pyramid 

 Lake, Nev. In the course of the year efforts were initiated to attain 

 closer contact with the Bm'eau of Reclamation, Department of the 

 Interior, since the activities of that agency in constructing irrigation 

 projects, particularly in the Northwest, have a strong bearing on the 

 welfare of important fisheries. In most cases these fisheries may be 

 preserved or subjected to a minimum damage by giving attention to 

 the installation of adequate fish ladders in the dams or by the proper 

 screening of diversions. The main thought for consideration in con- 

 nection with both State and Federal agencies worldng in allied fields 

 is to assure that the various projects shall be actually carried on by 

 the agency best qualified to accomplish effectively the object sought, 

 at the lowest practicable cost. 



COOPERATIVE FISH NURSERIES 



It is evident that the economic stress has affected the ability of 

 sportsmen's organizations to carry on independent projects to supple- 

 ment the work of the Federal hatcheries. One of the most promising 

 developments of this nature was the cooperative nursery system 



