20 



U. S. BUREAU OF FISHERIES. 



Egff-coUectirvg stations, period of operation, and species handled, fiscal year 



1923— Continued. 



FISH FOOD USED AT HATCHERIES. 



The following table indicates the amounts and kinds of food used 

 at the fish-cultural stations of the bureau during 1923, with the cost 

 per pound of each material used. 



Pounds and cost per pound of fish food used during the fiscal year 1923. 



PACIFIC SALMON STATIONS. 



ROCKY MOUNTAIN TROUT STATIONS. 



1 Donated by State fish and game commission. 



2 No cost. 



