158 GORILLAS AND CHIMPANZEES 



away from the cage. I called him with the usual 

 sound and he answered, but did not come to the 

 cage. It is probable that he could see it, and was 

 afraid of it. I tried to induce Moses to call him, and 

 he did once utter the sound, but he appeared to 

 regret having made the attempt. I called again and 

 he answered, and from the manner in which Moses 

 behaved it was evident that he understood it. He 

 would not attempt the call again, but clung to my 

 neck with his face buried under my chin. It was 

 probably jealousy that caused him to refuse, because 

 he did not want the other to share my attentions. 

 I gave the food sound, but I could not induce the 

 visitor to come nearer. I failed to get a view of him 

 so as to tell how large he was, but from his voice he 

 must have been about grown. . Whether he was 

 quite alone or not I was not able to tell, but only the 

 one voice could be heard. 



Another time, while sitting quite alone, a young 

 chimpanzee, perhaps five or six years old, appeared 

 at the edge of a small opening of the bush. He 

 plucked a bud or leaf from a small plant. He 

 raised it to his nose and smelt it. He picked three 

 or four buds of different kinds, one or two of which 

 he put in his mouth. He turned aside the dead 

 leaves that were lying on the ground as if he expected 

 ^o find something under them. I spoke to him, 

 using the call sound ; he instantly turned his eyes 

 towards me, but made no reply. I uttered the food 

 sound and he replied, but stood where he was. He 

 betrayed no sign of fear, and little of surprise. He 



