3 ° 
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. 
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 
