Haggerty, hnitation in Monkeys. 



415 



the door. Finally he opened the door liy working at it directly and got 

 the food. 



Fourth test. No. 5 was exceedingly active and after getting food would 

 pull the string a number of times before the door was reset or the food 

 replaced. No. 6 saw her ten times in fourteen. 



When No. 5 was out No. 6 became very active about the door, working 

 continuously to get the food. Ouce he ran up the wire and bit the plug. 



Fifth test. At first No. 6 was quite indifferent to No. 5, but he became 

 attentive as he saw No. 5 getting food. When No. 5 pulled the plug the 

 eighth time No. 6 climbed the post and pulled it after her. As he pulled it 

 he looked at the door. This he repeated after the ninth performance also, 

 and again after the tenth. 



When No. 5 was removed No. G went at once to the door; then he played 

 up the wire and came down again to the door. Then he ran up to the plug 

 and pulled it until he got the door open, two minutes after the removal of 

 No. 5. When the apparatus was reset No. 6 began to work at the door. 

 After one minute he climbed the cage, took one look through the wire, and 

 went back to the door. Then in the midst of vigorous pushing at the door 

 he suddenly stopped, fairly flew up the wire to the plug, and pulled it 

 vigorously until it came out and the door opened. He came down quickly 

 and got the food. He repeated this twice in two minutes. The next time 

 the plug stuck, and although he worked at it vigorously, it was ten minutes 

 before he succeeded in pulling it out. He had run about the cage somewhat 

 during that time. He oi)ened the door once afterward. 



TABLE 26. 

 No. 6 Imitating No. 5. 



Sum III a 111 of Bella vior of No. 6 in the Plug Expcriiitciit. 

 In his first preliminary trial No. 6 gave some attention to the food door and 

 to the plug. His interest in the plug disappeared in the later trials. The 

 second imitation test, w^hich may be reckoned as the first, served to direct 

 his interest to the plug. The third and fourth tests did not seem to increase 

 this interest nor to make It productive of profitable results. The fifth test 

 did show a decided increase of attention to the movements of No. 5, and. 



