Table 6, --Number of fish-seconds spent in the 

 attraction area under various condi- 

 tions of stimulation 



initial experiments, indicated as "(1)" in table 6, These yield the 

 following comparable means: 111„2, 423,0, and 482,4 fish^seconds, 

 respectively„ Obviously, the means for both lures alone and for 

 lures plus extract are both significantly greater than that for controls „ 

 Although the mean for lures plus extract is greater than that for lures, 

 the statistical significance of the difference cannot be established with 

 the present data. 



Speed of Swimnning 



Another measure of activity is speed of swimming. This 

 was determined by timing the leader of the school as it passed be- 

 tween the two lines marking the boundary of the attraction area. 



72 



