Role of Sight in Daily Life of Dancer 187 

 TABLE 32 CONTINUED 



As the results in Table 31 show, the time and number of 

 errors rapidly diminished. Number 7, for example, made no 

 errors in the second test. The chiefly significant fact which 

 appeared in these preliminary experiments, however, was that 

 the mice soon ceased to care whether they got out of the 

 labyrinth or not. After they knew the path perfectly, they 

 would enter the wrong passages repeatedly and wander about 

 indefinitely. It was obvious, therefore, that the labyrinth 

 could not be used to reveal the role of sight unless some 

 sufficiently strong motive for continuous effort to escape from 

 it could be discovered. Naturally I looked to the electric 

 shock for aid. 



The labyrinth of Figure 23, which for convenience in dis- 

 tinguishing it from several other forms to be described later 

 I have designated as labyrinth B, was placed upon a board 

 90 cm. long and 30 cm. wide about which had been wound 

 two pieces of phosphor bronze wire after the manner de- 



