330 U. S. BUREAU OF FISHERIES 



Mackerel (Scombrid^e) : Common mackerel (Scomber scombrus). 

 Cods (Gadid^c) : 



Cod (Godus calhtrias). 



Haddock (Melanogrammus wglifinus) . 



Pollock (Polluchius virens). 

 Flounders (Pleuronectid^e) : Winter flounder, American flatfish (Pseudopleu- 

 ronectes americanus). 



COOPERATION WITH STATES, OTHER FEDERAL AGENCIES, AND 

 FOREIGN GOVERNMENTS 



The bureau has continued to supply eggs of the brook, rainbow, 

 and black-spotted trouts to the Canadian Government in exchange 

 for eggs of the Atlantic salmon. Such exchanges with foreign 

 countries have been very advantageous, as they have been the means 

 of placing at the bureau's disposal eggs of a kind that otherwise it 

 would have been difficult to obtain. In several instances State fish- 

 eries authorities have exchanged eggs with the bureau, and the 

 bureau frequently has supplied eggs to a State. The State of North 

 Carolina has aided the bureau in securing a brood stock of black 

 bass for its Edenton (N. C.) station and has materially assisted in 

 other ways in increasing the production of fish at that station. The 

 bureau has aided several States in establishing fish-cultural stations 

 and has incubated and reared fish at its hatcheries for State institu- 

 tions. Particularly favorable results along this line have been se- 

 cured at the White Sulphur Springs (W. Va.) and Spearfish (S. 

 Dak.) stations. 



OUTPUT 



The output of the fish-cultural stations and of the rescue fields bor- 

 dering the Mississippi River aggregated 5.232,373,000 fish and fish 

 eggs. Losses in transportation amounted to 47,828, leaving a net 

 output of 5,232,325,172 actually distributed, which shows a falling 

 off of approximately 69,500,000 as compared with last year's figures. 

 Almost all of the commercial fishes produced were returned to the 

 waters from which the eggs were derived. The output of fingerling 

 fish in 1925, in round numbers, was 136.953,000, as compared with 

 299,294,700 in 1926. 



