26 



JOSEPH PETERSON 



1 of Maze IB. Many of the entrances to 2, as the observation 

 of the animals in their responses and also their individual records 

 showed, are clearly due to confusions resulting from entrances 

 to 1. The experimental notes supply many evidences. As a 

 rule the rat in the early stages of response to such a blind alley 

 runs rapidly into it the entire distance, usually coming into 



AVERAGE PER 



L-5 6-15 16-35 



36-45 66-65 



TRIAL PERIODS 



96-105 116-125 



Figures IV and V.— C shows decrease in average number of complete entrances 

 per trial to Blind Alley 1 full length in the B-mazes; H same for half-way 

 entrances, and S for beginning entrances. C, H', and S' show corresponding 

 results for the blind alley shortened. Eight untrained rats in each case 



