362 'Journal of Coinparative Neurology aud Psychology. 



D. Behavior of No. Jf. 



First trial. No. 4 spent lier time on tlie floor and the sides of the cage. 

 She was faiiiy active. After four minutes of random movements about 

 the cage, she hung by her tail and two feet to the front of the cage opposite 

 the chute and swung her body around crane-like toward the chute, looking 

 at it steadily. She then moved about the cage as if she had nothing to do; 

 she either sat quietly or leisurely climbed the cage. 



Second trial. No. 4 walked about on the floor; then climbed the wire 

 and looked about. Once or twice she examined the cracks in the floor and 

 in the door. She looked at the chute twice and looked out through the wire 

 toward the window. 



Third trial. During the third period No. 4 spent her time on the floor 

 and in climbing the wire. Several times she pulled on the brace across the 

 front of the cage and then remained quiet. She paid no attention to the 

 chute duinng the entii-e time she was in the cage. 



Fourth trial. On the fourth day No. 4 spent most of her time perched on 

 the brace. She varied this by climbing up and down, catching roaches, and 

 looking out through the wire and the window. She displayed no interest in 

 the chute during the entire time she was in the cage. 



Fifth trial. On the fifth day No. 4 spent her entire time on the floor, on 

 the brace, and in climbing the wire. Most of the time she sat still, and when 

 disturbed, simply changed her position and settled down again. 



No. 4 paid most attention to the chute on her first day's trial. On the 

 second day she gave it less attention, and on the third, fourth and fifth days 

 none whatever. 



Imitation tests. — No. 4 imitating No. 2. — The animals were put into the 

 cage together. At first No. 2 was afraid of No. 4, who walked about the 

 floor and climbed the wire at her will. As No. 2 would not work at the 

 chute because of his fear, No. 4 was put into the observation box and the 

 box was placed on the floor of the cage. No. 2 was still afraid and refused 

 to work for some time. After twenty minutes, he leaped to the chute and 

 pulled the string. No. 4 did not see him, but some of the food fell into 

 her box and she ate it. Fifteen minutes later No. 2 jumped to the chute, 

 but he did not pull the string. No. 4 saw him on the chute. Later No. 2 

 jumped to the chute, pulled the string and caught a seed on his chest. 

 No. 4 saw him on the chute, but did not see him pull the string. The next 

 time No. 4 saw nothing, but got food. No. 2 then became more frightened 

 at No. 4 and refused to jump to the chute during the rest of the morning. 

 Since No. 4 had not seen the entire performance once, she was not given 

 an opportunity to get the food. 



Second trial. This trial was made on the afternoon of the same day as 

 the previous test. No. 2 was still much frightened and worked very slowly. 

 The first time he pulled the string and got food. No. 4 was looking. He 

 pulled the string again, but not hard enough to get food, and No. 4 saw 

 him. No. 2 did the same thing again and No. 4 saw him. The fourth 

 time No. 2 pulled the string he got food, but No. 4 did not see. In all, No. 



