Haggerty, Imitation in Monkeys. 343 



would sit on iny knee and eat her banana out of my hand. Within 

 a short time she would ride on mv shoulder as I walked about the 

 laboratory, thus being sure to keep near whatever food I might 

 have in my hand. No. 2, however, was more cautious, never coming 

 near except when No. 1 preceded him, and retreating whenever he 

 got his food. His favorite position was sitting on the floor of the 

 cage with No. 1 sitting in front, and his arms clasped tightly 

 around her bod_y. When No. 1 moved. No. 2 would start ner- 

 vously and try to keep close to her, never once taking his sparkling 

 brown eyes off the persons in the room. Gradually his fear wore 

 off and with No. 1 he went curiously about the cage, biting at every 

 projecting piece of wood, and poking his fingers into every crack 

 and cranny. A "small tree was put into the cage and then the 

 animals could stretch their tails by wrapping the tip end around 

 a branch and suspending their whole weight from the limbs, a 

 performance apparently as enjoyable to the monkeys as swimming 

 is for the average boy. 



The animals did not like to be separated. No. 2 was especially 

 concerned when No. 1 came out of the cage to get food and he 

 was left alone. Often, when alone, he would utter a shrill piercing 

 sound, a veritable bark. This was unlike their usual noises of 

 chattering, whistling and crying and I took it to be a danger signal, 

 for No. 1 never failed to climb the cage, window or anything else 

 near her when the cry was given. Even when, after a day's fast, 

 she was greedily eating her banana, it would be left with a startling- 

 suddenness and she would make no delay until she was at the high- 

 est point in the room. She never looked about to discover the 

 danger for herself and never ran on the floor. Her action was 

 always one impetuous scramble to get up. She never remained 

 up long and often came down immediately. I never heard her 

 utter the cry. He sometimes gave it when she was out of sight, 

 but again when she was in plain view, and when there was no dis- 

 turbance in the room. In the wild state, such a cry is probably 

 the signal that some enemy is near, and when given, all that hear 

 it scud to the tree tops as the place of greatest safety. 



After a few weeks in the laboratory. No. 1 acquired a pugnacious 



