222 The Dancing Mouse 



appear in Table 39 are due, however, to the fact that in some 

 cases training in labyrinth B had preceded training in laby- 

 rinth C, whereas in the other cases C was the first labyrinth 

 in which the animals were tested. But even this does not 

 serve to account for the wide divergence of the results given 



by No. 2 and No. 50, for the 

 ^ latter had been trained in B 

 10 previous to his training in C, 

 7 and the former had not been so 



3 trained. Yet, despite the advan- 



2 tage which previous labyrinth 



FIGURE 2 8.-Pian of Labyrinth experience gave No. 50, he did 



D, as reproduced from a print made not learn the path of C as Well 

 with a rubber stamp. /, entrance; ^ fift ^^ ^ NQ ^ ^ ^ 

 O, exit; numerals i to 13, errors. 



eleven. The facts concern- 

 ing the value of training in one form of labyrinth for the learn- 

 ing of another, as they were revealed by these experiments, 

 may more fittingly be discussed in a later chapter in connec- 

 tion with the facts of memory and re-learning. 



Labyrinth C is a type of maze which might properly be 

 described as irregular, since the several possible errors are 

 extremely different in nature. In view of the results which 

 this labyrinth yielded, it seemed important that the dancer 

 be tested in a perfectly regular maze of the labyrinth-D type. 

 The plan which I designed as a regular labyrinth has been 

 reproduced, from a rubber stamp print, in Figure 28. As 

 is true also of the mazes previously described, it provides 

 four kinds of possible mistakes : namely, by turning to the 

 left (errors i, 5, 9, and 13), by turning to the right (errors 

 3, 7, and u), by moving straight ahead (errors 2, 4, 6, 8, 10, 

 and 12), and by turning back and retracing the path just 

 followed. . The formula for the correct path of D is simple 

 in the extreme, in spite of the large number of mistakes which 



