28 U. S. BUREAU OF FISHERIES 



during October, 1920, are particularly pleasing. Eleven of these 

 fish were reported during the early part of the 1923 season, and 

 over 200 have been reported thus far this season. The capture of 

 25 four-year-old chinooks marked at the Little White Salmon 

 hatchery' were reported last season. Judging from the propor- 

 tion of four and five year old fish returning from other experiments, 

 ver}' good returns are expected from this experiment during the 

 latter part of the present season. The reported capture during May, 

 1924, of 16 four-year-old Willamette fish liberated at Bonnneville 

 gives promise of good returns from this experiment next season. 

 Over 300 five-year-old marked sockeyes were reported last season. 

 These fish were hatched from eggs brought from Alaska, but reared 

 and liberated in the Columbia. Twelve hundred individuals from 

 this same experiment were reported during the season of 1922. This 

 experiment has been the most successful, in so far as the number of 

 returns secured is concerned, of any of this series of marking experi- 

 ments. 



The following new marking experiments were started during the 

 past year : 



1. Alaska sockeyes reared and liberated at Enterprise, Oreg. 



2. Alaska sockeyes, second generation in Columbia River, eggs col- 

 lected and the young reared and liberated at Herman Creek. 



3. Fall chinooks from Little White Salmon River, reared and lib- 

 erated at Salmon, Idaho. 



4. McKenzie River chinooks, reared at Bonneville and liberated in 

 the Wallowa River. 



FISHERIES OF CALIFORNIA 



During the past year arrangements have been made to cooperate 

 with the California Fish and Game Commission in the important 

 studies they are conducting on the fisheries of that State. The scien- 

 tific work of the California commission has been developed within 

 recent years through the efficient efforts of Norman Scofield and 

 W. F. Thompson. At the present time special attention is being 

 given to the sardine and tuna. Although the aid that can be given 

 this work is not great, it is believed that such cooperation as is 

 planned will lead to more effective work and to a feeling of mutual 

 interest and responsibility in the difficult fishery problems awaiting 

 solution. 



FISHERIES OF EL SALVADOR 



During the year the Government of El Salvador, Central Amer- 

 ica, requested that a scientist be loaned for the purpose of studying 

 the fish and fisheries of that Republic. S. F. Hildebrand, ichthyolo- 

 gist, was assigned to the work and spent two months (January and 

 February, 1924) in El Salvador, accompanied by F. J. Foster, of the 

 division of fish culture. The expenses were borne entirely by that 

 count!-}'. 



The investigators were accorded the most cordial and helpful 

 cooperation by the officials of the El Salvadorian Government, and 

 were provided with facilities that greatly assisted in the work and 

 promoted its success. All of the fresh waters of importance were 

 visited and co"'»ctions of fishes were made in each. Planlcton speci- 



