40 



HELEN B. HUBBERT 



finished in the fewest trials (18) had next to the highest time 

 record but the lowest distance record, while the rat requiring 

 the greatest number of trials (56) had a time record lower than 

 the average, with the highest distance record. The highest 

 time record was made by a rat which finished in forty-three 

 trials, whose distance record was excelled by one other, the 

 lowest, by one which finished in thirty-two trials with a dis- 

 tance record next to the lowest. 

 Group averages are: 



Time 



Trials Absolute 



Total 



Distance 



Speed 



38 



10.7 sec. 



557 min. 



332.9 m. 9.9 cm. per sec. 



Discussion of the curves seems hardly worth while in view 

 of the small number of results on which they are based. The 

 average number of trials lies between the two apices of the 

 trial curve, (Fig. 7-A), the average amount of total time re- 

 quired, thirty-three hundred seconds, agrees with the second 

 maximum in the time curve, (Fig. 7-B), and the distance aver- 

 age lies at the middle one of the three maxima of the distance 

 curve. (Fig. 7-C). 



Figure 7-a Trial Curve for Five Hundred Day Rats 



