THE SPEECH OF MONKEYS. IO9 



fore, to give much detail concerning their speech, 

 but from a careful study of one cylinder contain- 

 ing a record of their sounds, I was able to dis- 

 cern as many as seven different phones, all of 

 which come within the scope of the human vocal 

 organs. I learned one of these sounds, and on a 

 subsequent visit to Cincinnati I succeeded in at- 

 tracting the attention of the female and eliciting 

 from her a response. She would come to the 

 lattice door of the inner cage by which I was 

 standing, and when I would give utterance to the 

 sound she would press her face against the door 

 and answer it with a like sound. The male, how- 

 ever, did not appear to notice it with any degree 

 of concern. I have no idea what the sound 

 meant, and my opportunities have not been such 

 that I could translate it with the remotest degree 

 of certainty. These apes will be one of the chief 

 objects of my studies in tropical Africa, as I be- 

 lieve them to possess a higher type of speech 

 even than the gorilla. In this opinion, which I 

 reached from the study of other sounds and the 

 types of skull to which they belonged, I am not 

 alone. Mr. Paul Du Chaillu, Mr. E. J. Glave, and 

 others who have seen both of these apes in their 

 native habitat agree with me on this point. I 



