BEHAVIOR OF THE COMMON ROACH. 



365 



TABLE IV. 



This table records the reactions of a female roach 10 mm. long which after 21 

 trials had displayed no ability to learn the maze. It learned to avoid falling into 

 the water; but displayed no ability to avoid making errors on the runways. It 

 finally gave up attempting to learn the maze and tried to jump to freedom. The 

 roach was accidentally killed at the close of the 2ist experiment. Its reactions 

 are recorded because it was the most unapt roach that I had. 



