Haggerty, Imitation in Monkeys. 40 1 



Wbeu the device was reset, No. 4 pushed the screen up aud tore the paper. 

 Thereafter, she lifted the screen and got food when she wanted to. 



C. Behavior of No. 6. 



Preliminori/ trials. — First trial. No. 6 was active, climbing up aud down 

 the wire, and upon the screen. He fingered about the edges of the screen, 

 but made no effort to raise it. 



Second trial. The second day No. 6 ran all about the cage, climbing the 

 wire and upon the screen. He examined the screw eye where the string 

 had been attached, but made no effort to lift the screen. 



Third trial. On the third day he seemed interested in all parts of the 

 cage, examining every crack and hole in it. He fingered the top of the screen 

 as if to move it. Six times he climbed upon the screen. The remainder of 

 the time he busied himself catching flies. 



Fourth trial. On the fourth day No. G paid no attention to the screen 

 during the fifteen minutes. 



Fifth trial. No. 6 paid but little more attention to the screen on the 

 fifth day. Three times he climbed upon it to jump to the wire front and 

 three times he examined the hole above the screen. 



Imitation tests. — No. 6 imitating No. ^.— The two animals were put into 

 the cage together in each of the following tests. 



First test. No. 6 was at first indifferent to the movements of No. 4. He 

 usually saw No. 4 get the food, but failed to see him lift the screen. In the 

 six times No. 4 lifted it in the test, No. 6 appeared to see twice. After No. 4 

 had been taken out, No. 6 paid no attention to the screen for ten minutes. 



Second test. The first four times No. 4 lifted the screen No. G did not 

 see. He was picking over the hulls left on the floor. The fifth time he saw 

 from the opposite corner of the cage, and while No. 4 was up on the wire 

 front eating. No. 6 went to the screen and looked. The sixth time the screen 

 stuck when lifted, and No. 6 put his hand in and got food. After the seventh 

 time No. G went to the screen and pushed on the lower edge of the frame. 

 Then he pulled at the top and went away. He went back immediately aud 

 putting botli hands on the screen pushed. He then went away, but wheu 

 No. 4 lifted the screen he saw and went at once to it. Putting his hands 

 on it he pushed it up one-third of the way. Then he pushed it up so as to 

 reveal the hole, and got food. No. 4 puslied it up again and No. G saw. Imme- 

 diately No. 6 lifted the screen and got food. 



After No. 4 had been taken out No. G lifted the screen eight times in 

 ten minutes. He could do it perfectly. 



Suinmanj of Behavior of No. 6 in the Screen Experiment. 

 No. 6 had seen the screen go up in the Paper Experiment and he had 

 experienced getting food when the screen was lifted. However, his five pre- 

 liminary trials in the Screen Experiment did not lead him to get food. 

 When first in the cage with No. 4 he was not inclined to be attentive. 

 When he saw No. 4 getting food in the second test he at once became inter- 



