Finger Movement. 



89 



second to second, and the curve for each 2-second interval tends to main- 

 tain its relative level to the curves for the other 2-second intervals. Curves 

 1 and 2 cross at period 6, and curves 3 and 4 at period 3. After period 

 1 the general configuration of the two groups of curves are opposed in that 

 the tendency is for one to rise where the other falls, and vice versa. 



The broken-line curve shows the average for each group. For the 

 non-alcohol days the average performance in period 2 was not inferior 

 to that of period 1. In periods 3 and 4 there was a definite increase, 

 while period 5 is practically at the level of 1 and 2 ; period 6 is somewhat 

 below the average number of oscillations in the other periods. In con- 



Experimental periods after dose 

 2 r 3 r 4 5 6 



Fig. 10. — Differences for finger oscillations in 2, 4, 6, and 8 second intervals for eacn period after 



the control and alcohol doses. 



