The Mind of a Monkey 255 



various ways. I took the jar and put another nut 

 in it, but Lizzie continued to play with the jar and 

 let the nut drop out unobserved. When the nut was 

 replaced Lizzie tried to get it by biting the glass; 

 in the course of her turning the bottle around, the 

 nut dropped out and she picked it up. When an- 

 other nut was put in Lizzie reached in at once and 

 got it. Another nut was obtained in the same way, 

 but at the next trial she turned the jar around in 

 various ways until the nut fell out; and in numerous 

 other trials on different days she sometimes got the 

 nut by reaching it directly and at other times by 

 turning the bottle around until the nut dropped out. 

 Fifty or more trials did not teach her to secure the 

 nut at once by inverting the bottle. While she came 

 to get the nut by reaching into the jar more often 

 than she did at first, she did not settle down to any 

 uniform method of procedure. 



When a nut was placed in the jar and the cover 

 screwed on very loosely, Lizzie tried to pull the 

 cover off by using her hands and teeth. After much 

 effort she succeeded and held the jar with a hand 

 and a foot and the cover with the other hand. The 

 novelty of the cover engrossed her attention and she 

 let the jar drop. Soon she went to the jar, reached 

 in and got the nut, and then resumed her investiga- 

 tion of the cover. 



Another nut was placed in the jar and the cover 

 screwed on very loosely as before. Lizzie took the 

 jar to her perch, worked the cover off with her hands 



