PACIFIC SALMOIST FISHERIES. 



EXPORTS OF CANADIAN CANNED SALMON. 



Exports op Canned Salmon from Canada, 1916-1919. 



[Fiscal year ended Mar. 31.] 



203 



SALMON CULTURE." 



The artificial culture of salmon on the Pacific coast has developed 

 into a lar^c and constantly expanding industry. The United vStatcs 

 Bureau ol Fisheries operates a number of larjj^e and well-equipped 

 hatcheri<'s, while the State governments of California, On^^ijon, and 

 Washington, the Dominion of Canada and the Province ol British 

 Columbia, and certain private compani<'s have built and maintain 

 a large number of hatcheries, some of those being among the largest 

 in the world. 



OBTAINING THE SPAWNING FISH. 



The eggs used for artifical propagation are obtained from salmon 

 taken on their way upstream to the natural spawning gi'ounds. In 

 order to arrest the ascent of the fish a rack is usually built across 

 th(! stream. Where this is not feasible a trap is s()metim<'S con- 

 struct<'d for the purpose of catching the fish. Sometimes the racks 

 have slat traps attached in which some fish are caught. 



• Since this revision was completed there has appeared an excellent work on this sut>ject, entitled " Arli- 

 flclal Propagation of the Salmons of the Pacilie Coast^" revised and enlarged by Henry O'Malley. 

 Appendix II, Report, U. b. Commissioner of Fisheries, 1919, 32 pp., 9 pU. Washintstou, 1920. 



