29 

 This activity, however, was decidedly sporadic. Hunger 



stimulus is intermittent in eharacter.and it is probably 

 most intermittent during the early trials because of the 

 presence of numerous interfering stimuli, and then the 

 rats may be said to be governed by curiosity, 

 REST" 

 The results obtained from the work on the maze are 

 not as satisfactory as those from the latch box. Some 

 of the rats used in this experiment were not of the same 

 strain as those previously experimented with. A few rats 

 given three and five trials a day, were not perfectly nor- • 

 Their slowness of response throughout learning 

 seemed to indicate a lack of vitality. Tables II-b and 

 II-c show how these rats have affected the data ob- 

 tained. Table Il-a gives records of entirely normal 

 rats. Even considering the records of the abnorr. 1 

 rats, one trial a day appears again to be the most econom- 

 ical in the way of trials, and five trials a day in re- 



