396 'Journal of Comparative Neurology and Psychology. 



climbed iipou the frame at the paper. He whined and called most of the 

 time he was in the cage. 



Second trial, July 3. No. 9 took no notice of the paper during the entire 

 fifteen minutes he was in the cage. He climbed about the cage and tried to 

 push the door open. 



Third trial, July 4. No. 9 was very active about the cage, but paid no 

 attention to the paper during tlie first minutes in the cage. Later he went to 

 the paper, bit at tlie frame and climbed upon it. 



Fourth trial, July 5. In the fifth trial No. 9 climbed about the cage 

 and upon the screen frame about the paper. He made no effort to tear the 

 paper. 



Fifth trial, July 5. The behavior of No. 9 in the fifth trial' was similar 

 to what it was on the previous days. He gave no attention to the paper. 



Imitation tests. — No. 9 imitating No. 2. — The two animals were in the 

 cage together in each of the following tests. 



First test. No. 9 was not at first inclined to be attentive to No. 2. It was 

 not until No. 2 got food the fifth time that he apparently saw the act. 

 Then he put liis hand.s on the bottom of the screen frame and reached one 

 hand through the hole, but he got no food. Several times before the device 

 could be reset No. 9 went to the screen and Itit it and climbed upon it. He 

 had not been near the screen that day. During the sixth, seventh and 

 eighth - manipulations by No. 2, No. 9 was beside him and saw what was 

 done. Each time he put his hand into the opening, but got no food; each 

 time he climbed upon the lifted screen. 



After No. 2 had been taken out No. 9 was quite active, running all about 

 the cage. He weut to the screen several times and bit at the edge of the 

 frame. Once he pushed his hand up over the paper and at another time he 

 bit at the inner edge of the frame next the paper. 



Second test. No. 9 saw each time and was near No. 2 in the corner of 

 the cage. During the third, fourth, and fifth performances No. 9's hands 

 were on the lower edge of the frame and after the paper had been torn 

 No. 9 got food along with No. 2. 



When No. 2 had been taken out No. 9 went to the paper, climbed 

 upon the frame and jumped to the wire. He returned to the paper 

 and bit at the edge of the frame, but not at the paper. Several minutes 

 later he weut to the paper and put his nose to it. This he repeated 

 three times. At the last time of the three, he sat on the bottom of the 

 frame and tried the paper with his fingers. He finally tore it and got food 

 at the end of fourteen minutes. When the device was reset No. 9 went to 

 it and sat on the lower edge of the frame. He tried to tear the paper with his 

 fingers, but failed to make a hole. He later weut to it and bit at the 

 edge of the frame, but not at the paper. A little later he examined the paper 

 with his nose, but did not bite it. 



Third test. No. 9 saw perfectly five times in six and got food twice. 

 When alone he went to the paper, examined it with his nose, and went 

 away. Later he went to the paper and fingered the edges. He then went 

 away, returning once more during the fifteen minutes, but doing nothing. 



