EFFECTS OF DRUGS ON WHITE MICE 



133 



TABLE 4 

 Number of revolutions per week of the mice in the nicotine line 



No. 13 ran low during the entire experiment. Its maximum 

 run was 79 613 revolutions at the sixteenth week. Its minimum 

 run was 14 704 at the thirty-second week. Its average weekly 

 run was 40 052 revolutions. 



No. 14 showed its greatest activity from the eleventh to the 

 seventeenth week, its maximum run being 135 316 revolutions 

 at the fifteenth week. After that it decreased rapidly till its 

 death in the thirty-second week. Its minimum run for an entire 



