266 Journal of Comparative Neurology and Psychology. 



no less quickly. I need scarcely state that the time records have 

 little value for our present purposes, and are therefore omitted, 

 except in the case of Table 14. 



TABLE 14. 

 Relation of Age to Rapidity of Acquisition op Labyrinth Habits. Typi- 

 cal Series of Results Given by Two Males in Labytiinth D. 



TABLE 15. 

 Relation of Age to Rapidity of Acquisition of Labyrinth Habits. 

 Results in the table indicate the number of trials up to the point at 

 which no errors occurred for at least two consecutive trials. 



The general results of the labyrinth experiments appear in Table 

 15. Averages are given for the sexes separately, inasmuch as so 



