The enormous number of figures involved, makes the showing 

 of individual records inexpedient. An exact copy of the daily 

 record for rat number fifteen of the twenty-five day groujc , 

 from the first to the last trial appears aa Table I. The 

 averages a>id totals for each rat which appear in Table II are 

 obtained by adding and averaging the daily records for each rat. 

 Trial, time and distance variation for each animal are also 

 given. The total time, total distance, total number of trials 

 and the absolute time of the twenty-seven rats v.ere added and 

 averarred to give the average total time, the average total dis- 

 tance, the average number of trials, and the average absolute 

 time for the grouji . 



The ST eed is the average nuijiber of centimeters traveled 

 per second throughout the learning procesp, and is obtained 

 by dividing the total time into the total distance. For the 

 twenty-five day group these averages were: 



Trials Time Distance Speed 



Absolute Total 



30 5.7 sec. 224 min. 271.6 meters 20.1 



The curves shown in Fig. 3 are based on the I'igures in 

 columns 2, 4 and 6 of Table II. Only one rat finished in less 

 than fifteen trials, and this is indicated on the first point 

 01 the curve. Three rats finislied at between fifteen and twen- 

 ty trials, one at seventeen and two at eighteen trials each, 

 the average being seventeen as indicated on the curve. Between 



