peared to elate their spirits, causing them to rise 

 and fall as if dancing to the sweet strains. Other 

 tunes, on the contrary, seemed to have a depress- 

 ing effect, as they remained motionless. This 

 quite agrees with my theory that salmon are able 

 to hear, and while some sounds do not disturb 

 them, others are most alarming. 



94 



