142 VOICE AND "language" OF CHIMPANZEES 



Chim was playing one day on a high fence, the top rail of 

 which was loose at one end, furnishing a fine teeter for one of 

 his ingenuity. Before him there stretched two fields, sep- 

 arated by a stone wall, in which was an opening used occasion- 

 ally by cows that grazed some distance away, usually out of 

 sight. To test his behavior, D. drove a cow toward this gap 

 which was but a few feet away. Chim discovered her as she 

 was about to pass through. Standing quiet for a moment, 

 he watched her intently, and retreated a step or two. Then 

 seeming to regain his courage, he recovered his original posi- 

 tion, and as the cow came on, stamped hard and fast with his 

 feet on the second rail while he slapped the loose top one as 

 hard as he could with his hands. (See no. 302.) The cow 

 was fascinated for a moment, but soon turned and hurried 

 away, leaving the field to Chim — an amusing spectacle, in 

 the bravado of his diminutive figure. 



On another occasion, a large horse with its rider suddenly 

 galloped over the brow of the hill to where the chimpanzees 

 were being held for a photograph. 



Chim, in a panic, jumped to the ground, and ran away. 

 Although the horse had gone when he was brought back, he 

 kept looking anxiously about, and finally made off again, 

 going some distance to a person whom he knew. 



Panzee on the contrary, seemed to feel safe in being held 

 during this episode. On being put down, she voiced her 

 protest anxiously: 



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