The Mind of a Monkey 251 



the nail. After her appetite was whetted another 

 piece of apple was placed six inches to one side of 

 the board as before. Lizzie expectantly pulled the 

 board in and repeated the performance six more 

 times, but her actions became slower with each dis- 

 appointment, until after the sixth trial she gave the 

 board up and tried to reach the apple directly. Then 

 I held the apple near the cage to give her a smell 

 of it and replaced it near the board. Being thus 

 stimulated, Lizzie pulled the board in by the nail 

 three times, when she gave up the task. After 

 being tempted as before she pulled the empty board 

 in three times. 



In these experiments Lizzie showed that she had 

 associated the act of pulling in the board by the 

 nail with obtaining and enjoying the apple. But her 

 persistence in pulling in the board when she could 

 clearly see that the apple was several inches away 

 from it showed that she exercised little discrimina- 

 tion, and indicated that the associations she had 

 formed were of a rather vague and hazy kind. 



In another experiment I placed the apple further 

 out on the same board so that she would be unable 

 to reach the food when the near end of the board 

 was against the base of her cage. Lizzie pulled 

 the board in at once and reached for the apple. 

 Finding it too far out, she pushed the end of the 

 board sidewise, at the same time keeping it against 

 the base of the cage. This brought the apple nearer 

 and she got it. The experiment was repeated sev- 



