136 



L. B. NICE 



Weekly activity of the average of each line 



In order to compare the activity of the different hnes the aver- 

 age of each hne is recorded in table 6 and figure 2. Some of the 

 mice in the alcohol and caffeine Unes died during the course of 

 the experiment. In such cases the last entire week of activity- 

 was counted in making the averages. 



From table 6 and figure 2 it will be seen that the controls 

 reached their maximum run of 119 523 revolutions at the tweffth 



TABLE 6 

 Number of revolutions per week of the average of each line 



