EFFECT OF MINING SILT ON YIELD OF FRY FROM SALMON BEDS 41 



TABLE 5 



Suspended Solids 



Deposit per bed = 1330-1176 = 83 p.p.m. 



1.86 



TABLE 6 

 Gravel Control Nests 



Literature Cited 



Ellis, M. M. 



1937. Detection and measurement of stream pollution. U. S. Bureau of Fisheries 

 Bulletin no. 22, p. 394. 



Shapovalov, Leo. 



1937. Experiments in hatching steelhead eggs in gravel. California Fish and 

 Game, vol. 23, no. 3, pp. 208-214. 



Shapovalov, Leo, and Berrian, William. 



1939. An experiment in hatching silver salmon (Oncorhynchus kisutch) eggs in 

 gravel. Transactions The American Fisheries Society, pp. 135-139. 



Ward, Henry Baldwin. 



1937-1938. Placer mining on the Rogue River, Oregon, in its relation to the fish 

 and fishing in that stream. Oregon State Department of Geology and 

 Mineral Industries, 31 pp. 



