8 



STELLA B. VINCENT 



we can say nothing about the total distance traversed. All of 

 the tables upon which this discussion is based would gladly be 

 given but it is impossible within the limits of this paper. The 

 results will be shown by means of graphs upon which the dis- 



is 



10 



IS 



Fig. 2. Learning curves of 10 rats on the normal maze 

 Time, Errors 



cussion will be based and only such other additional data will 

 be given as is necessary. 



Four months' work was put upon this problem in 1907. 

 Nothing more was attempted until it was resumed in 1910. 

 None of the first experimentation is reported here, since it was 

 all repeated in the later series under stricter control and with 

 similar results. 



