FISHERY INDUSTRIES. 



35 



nature at the rate of 10 cases of canned salmon for every 1,000 red or 

 king-salmon fry liberated upon certain conditions, which are (1) the 

 approval of the character of their hatchery operations by the Secre- 

 tary of Commerce, notice thereof to be filed in the ofRce of the clerk or 

 deputy clerk of the United States district court of the division of 

 Alaska wherein such hatchery is located and the owners accordingly so 

 notified; and (2) the filing of proof by the hatchery operators with 

 the clerk of the court of the number of salmon fry liberated during the 

 fiscal year for wliich report is made. Duplicates of such statements 

 must also be filed with the Secretary of Commerce. The clerk of the 

 court then issues to the owner whose hatchery operations have 

 been approved nontransferable certificates in such denominations as 

 he desires covering in the aggregate the number of fry so liberated. 

 These certificates are accepted by the Government in lieu of money in 

 payment of all license fees or taxes against the pack of canned salmon 

 as above stated. The following table gives the rebates due to private 

 operators for the fiscal year ending June 30, 1919. 



Rebates Credited to Private Salmon Hatcheries During Fiscal Year 



Ended June 30, 1919. 



HATCHERY OPERATIONS. 



M DONALD LAKE. 



Out of the collection of 47,300,000 red-salmon eggs taken at the 

 McDonald Lake hatchery in 1918, a shipment of 3,440,100 eyed eggs 

 was made to the State hatchery at Bonneville, Oreg.; one of 1,059,900 

 eyed eggs, to Bureau stations in Oregon; and 35,329,700 fry were lib- 

 erated in waters tributary to Yes Bay, Alaska. The loss of eggs and 

 fry aggregated 7,470,300, or approximately 16 per cent. 



The collection of red-salmon eggs at the McDonald Lake station in 

 the fall of 1919 was the smallest that has ever been made, only 

 9,752,000 being obtained. Operations were interrupted in the midst 

 of the season by high water which damaged the retaining racks and 

 permitted the escape of a large number of spawners. No humpback- 

 salmon eggs were collected. 



The Afognak station experienced the most successful season in the 

 history of its operations, the total take in 1919 being 79,178,000 red- 

 salmon eggs. It was also reported that there were many salmon 

 available for spawning still in the lake when the capacity of the hatch- 

 ery had been reached. No effort was made to obtain humpback- 

 salmon eggs. 



From the collection of 54,681,000 red-salmon eggs taken in 1918, 

 a consignment of 20,700,000 was shipped to the Fisheries Department 

 of British Columbia for the restocking of the Fraser River, and a ship- 



