BUREAU OF FISHERIES 79 



the local coiniiiuiiity. At Walhalla, S. C, the unified efforts of the 

 Bureau, local sportsmen, and the authorities in char^^e of the Civil- 

 ian Conservation Corps activities resulted in the establishment of 

 splendid rearing |)onds, in which a considerable number of trout for 

 local waters are being grown. 



The maintenance of cooperative rearing ponds by private sports- 

 men's organizations to be stocked with fish furnished from Federal 

 hatcheries has been conducted on a somewhat restricted scale. The 

 Bureau will continue to cooperate with such groups who are desirous 

 of accepting part of the responsibility for the production of larger 

 fish for stocking their local waters. More careful scrutiny must be 

 given, however, to the locations available, the resources of the organ- 

 ization, and other j^ertinent details in view of the more limited scope 

 of the Bureau's activities. 



Cooperative investigations of the nutritional requirements of trout 

 carried on jointly by the New York Conservation Department, Cor- 

 nell University, and the Bureau of Fisheries at Cortland, N. Y., 

 have been continued during the past year, and a series of monthly 

 articles concerning modern hatchery practices has been issued for 

 the use of fish culturists. 



Cooperative trout investigations in the State of California, because 

 of the liberal support afforded by that State, have been conducted 

 without curtailment. Ecological studies of both coastal and high 

 Sierran streams have been undertaken on a large scale to determine 

 the capacity of various waters in sustaining fish life in relation to the 

 food suppl}'. Three stream-survey parties were maintained in the 

 field during the past summer on Public Works Administration funds, 

 and great progress has been made in obtaining the necessary facts 

 upon which to base more adequate stocking policies for the waters 

 of this State. 



In the technological work of the Bureau many State agencies have 

 cooperated in extending their facilities for the prosecution of these 

 studies. State universities, hospitals, agricultural experiment sta- 

 tions, and other State institutions of research have contributed per- 

 sonnel and laboratories in various projects. Especially has this been 

 true in the nutrition studies. Among the State institutions coojperat- 

 mg in this work are the South Carolina Food Research Commission 

 and State Medical College, Charleston, S. C. ; the Massachusetts State 

 Agricultural College, Amherst, Mass.; the Ohio State Agricultural 

 Experiment Station, Wooster, Ohio ; the New York State College of 

 Agriculture, Cornell University, Ithaca, N. Y. ; Washington State 

 College and Agricultural Experiment Station, Pullman, Wash.; the 

 University of Washington, Seattle, Wash.; and the University of 

 Marylancl, College Park, Md. In addition to cooperation in nutri- 

 tion investigations, the members of the staff of the Massachusetts 

 State College rendered valuable aid to the technological staff of the 

 Bureau's laboratory at Gloucester, Mass. In tests of fishing gear 

 with respect to measurement of mesh size of nets, cooperation has 

 been received from the States bordering on the Great Lakes. 



In certain marketing investigations, including the studies of the 

 grading of fish, tlie States of Virginia, North Carolina, Massachu- 

 setts, Maryland, and New Jersey either cooperated actively or gave 

 valuable aid in some form. 



