The Mind of a Monkey 259 



side the cage, I poked it about with the stick so 

 as to give her a suggestion of how the stick might 

 be employed to move the food within reach, but al- 

 though the act was repeated many times, Lizzie 

 never showed the least inclination to use the stick 

 to her advantage. In fact, she never exhibited the 

 least tendency to use any object as a tool. 



Next I tried suspending a piece of food beyond 

 her reach and giving her a light box upon which 

 she might mount and get the food. She did this 

 readily enough when the box was in the right posi- 

 tion. Then the box was pulled to one side in or- 

 der to see if she would pull it back so that she could 

 get upon it and reach the food. Although I fre- 

 quently moved the box about to give her the sug- 

 gestion and often put it in the proper place to en- 

 able her to get the food, the idea of using the box 

 in the way described never seemed to occur to her. 



Experiments with Lizzie were brought to a close 

 by her death, but the results obtained were sufficient 

 to give some insight into the nature and limitations 

 of her mental endowments. While gifted with re- 

 markably quick perception and in certain respects 

 power of rapid judgment, nothing in her behavior 

 gave any indication of the use of abstract or gen- 

 eral ideas, or of deliberate reasoning. Neither did 

 she exhibit the least tendency toward imitation, al- 

 though I am not prepared to say that further ex- 

 perimentation might not have revealed some evi- 

 dence of this faculty. Some things, and even sim- 



