16 



U. S. BUREAU OF FISHERIES. 

 Tbansfebs of Eggs, Fiscal Yeab 1921 — Continued. 



' For exhibit— fingerUngs dehvered to Pennsylvania Fish and Game Commission. 



> Eggs from wild stock. 



' Eggs from domesticated stock. 



* Ttus transfer was due to a misunderstanding of orders. 



Propagation of Commercial Fishes. 



The more important commercial fishes propap:ated by the bureau 

 are the salmons of the Pacific coast, the whitefish, cisco (lake her- 

 ring), lake trout, pike perch, and yellow perch of the Great Lakes, 

 the yellow perch of the Potomac, the carp in the Portage River sec- 

 tion of Ohio, the marine species — including the cod, haddock, pol- 

 lock, winter and pole floimdcrs — the butfalofish in Louisiana, and 

 the anadromous fishes of the Atlantic coast — the shad, glut herring, 

 alewife. striped bass, and Atlantic salmon. A discussion of the 

 propagation of these fishes at the various stations during the fiscal 

 year 1921 follows. Data concerning the spawning seasons for the 

 species at the different stations are assembled in the table on page 72, 

 and the amount and cost of fish food used at the Pacific salmon sta- 

 tions are given in the table on page 75. 



PACIFIC SALMON CULTURE. 



With the recent increase in the cost of all labor and materials 

 the bureau lias found it impossible to maintain the former magni- 

 tude of its Pacific salmon operations or to keep pace with the work 

 done along that line by the various State commissions. The Yes 

 Bay (Alaska) station was temporarily closed in order that its 

 allotment of funds might be used to rebuild the water-supply line 

 and make repairs to the hatchery and its equipment, such action 

 being essential to prevent complete deterioration of Valuable Govern- 

 ment property. In the following pages is given a brief review of 

 the work of the hatcheries on the Pacific coast. 



AFOGNAK (ALASKA) STATION. 

 [Edwin Wentworth, Superintendent.] 



There was another excellent run of sockeye salmon in Letnik Lake, 

 and during the active spawning season, extending from July 31 to 

 September 24, 62,300,000 eggs were laid down in the hatchery. This 



