128 



VOICE AND LANGUAGE ' OF CHIMPANZEES 



lane leads down through the hollow at one side to bars, 

 beyond which, in the lower pasture, a herd of cows grazes in 

 summer. This pasture encircles the fields on top of the hill; 

 consequently the cows in their wanderings frequently came 

 into full view of the chimpanzees at several points in their 

 play-grounds. 



There was a sand hole on a slope of the hill where Chim 

 spent many hours amusing himself, while Panzee sat near by. 

 Above it projected a miniature cliff, from which Chim de- 

 lighted to jump or tumble to the open sand in as many ways 

 as he could devise. A favorite plan was to turn heels over 

 head, over the edge; if the edge fell in with his weight, so 

 much the better; he would pick himself up and race around 

 to repeat the proceeding, often with spontaneous laughter. 

 On one occasion these tones were as follows: 



^ 



■* — f-i* — • — • — «-*- 



1£^ 



2^Q kha-hah,kha-hah,kha-hah,kha-hah,kha-hah,kha-hah,kha -hah 

 And again: 



p i^ — g p ^ ^ jU ^ 



^ 



kha-hah kha-hah kha-hah kha-hah - kha-hah kha-hah 

 240 



On another occasion: 



w^=rr r r ^ ^ ^ ^^ ' ' "^ 



241 



kha-hah kha-hah kha-hah 



kha-hah-kha-hah-hah 



