30 -APES AND MONKEYS. 



almost continually. By singing in a peculiar kind of monotone, in imitation of her 

 own utterance, her keepers were usually able to induce her to go through a series 

 of remarkable actions, the meaning of which is not very apparent. First she would 

 shoot out her lips into a tubular form, uttering at the same time a weird kind 

 of howling note, interrupted at regular intervals. The pauses would, however, 



THE CHIMPANZEE " SALLY." 



gradually become shorter and shorter, while the sing-song cry became louder and 

 louder, until it finally culminated in a series of yells and screams, not unfrequently 

 accompanied with a stamping of the feet, and a violent shaking of the netting 

 of her cage. After this climax the utterance of a few grunts terminated the 

 performance. 



Some time previously to 1889, it occurred to Dr. Romanes (from whose account 

 we are paraphrasing) that "Sally" would be a good subject to test the powers of 



