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THE NATIONAL GEOGRAPHIC MAGAZINE 



FEEDING RAINBOW TROUT IN AN ARTIFICIAL SPAWNING POND AND RACEWAY AT A 



VIRGINIA STATION 



to the same fishes in the upper waters, 

 and the young salmon have to run the 

 long gauntlet of the rivers only to meet 

 new foes in the estuaries, on the coast, 

 and in the open sea. 

 _ It is, therefore, no wonder that artifi- 

 cial propagation on a large scale is im- 

 peratively demanded in the western sal- 

 mon streams, and is actively urged and 

 highly commended by fishermen, canners 

 business men, and the public at large.' 



The history of the salmon fishery in 

 the Sacramento River, in California, and 

 the recent increase in the catch notwith- 

 standing most unfavorable physical con- 

 ditions in that stream, afford unmistak- 

 able evidence of the value of cultivation 



Some very suggestive, though not alto- 



gether conclusive, information relative to 

 the benefits of salmon culture in the 

 Columbia River has been furnished by 

 marking young salmon before releasing 

 them from the hatcheries. The number 

 of marked salmon that returned as ma- 

 ture fish and were captured and reported 

 indicates a very large percentage of sur- 

 vivals and suggests the growing depend- 

 ence on artificial propagation for the 

 maintenance of the runsl 



NEW ENGLAND COD AND LOBSTERS 

 CONSERVED 



In the case of marine hatching opera- 

 tions it is so difficult to prove beneficial 

 results that their utility is doubted by 

 some people. When the bureau began 



