water. Sound produced by this apparatus caused 

 the fish in section No. 1 to "start." The. reac- 

 tion was only momentary and nunnerous tests 

 indicated that this equipment had no value for 

 guiding fish. 



12. Successive, small, underwater explosions 

 failed to cause trout to move away from their 

 vicinity. 



13. A total of 90 planned tests were made 

 in addition to a number of exploratory and 

 informal tests. Contingency tests applied to 

 the data show the resulting distributions of 

 control and sound tests to be significantly 

 different. At no time however, did a sound 

 frequency or intensity influence the action of 

 the trout enough to be utilized in guiding young 



salmon into safe passages around danris and 

 diversions. 



LITERATURE CITED 



MOORHOUSE, V. H. K. 



1932. Do fish react to noise? Biological 

 Board of Canada, Progress Reports 

 Pacific Biological Station, no. 13: 

 July 14-15. 



WHITE, 5. YOUNG. 



1947. Too much audio. Audio Engineering, 

 vol. 31, no. 3, p. 52-53, May 31. 



1947. Quicker than the ear. Tinne, vol. 44, 

 no. 20, p. 64, May 19. 



MS #1154 



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GPO 925283 



