Here again the distance variation is seen to be leas than the 

 time variation. 



Comparison of the male and fenale records in the group 

 show that while the absolute time of the females ia lea^ than 

 that of the males, in other respects the male showing ia the 

 better. 



Time 

 Trials Absolute Total Distance 



Males 27 7.1 sec. 192 min. 228.3 m. 



Females 36 6.3 " 257 " 307.6 " 



Comparison of the time and distance variation for the males 

 and the females shows that the former have a lower variation 

 than the latter in both particulars. 



Time Variation Distance Variation 



Males 103 rain. 72.7 m. 



Females 107 " 96.5" 



Two Hundred Day i^ats. 



These rats were put to work when two -hundred days old, 

 having been fed in the maze for one week preceding the beginning 

 of the problem. They were more erratic than those of any other 

 group used, being jerky and irregular in their movements. Often 

 after making a perfect run in six or seven seconds a rat .vould 



