382 journal of Comparative Neurology and Psychology. 



Fourth trial. On the fourth day No. 4 behaved as usual, spending most 

 of her time on the wire and brace. When on the floor she swayed back 

 and forth before the wire and gave no attention to the rope. 



Fifth trial. On the fifth day No. 4 spent most of her time in the corner 

 of the cage farthest from the rope and gave no attention whatever to it. 



Imitation tests. — No. 4 imitating No. 2. — First test. No. 4 was placed in 

 the observation-box which was fastened to the front of the cage on a level 

 with the food door. 



No. 4 was on the floor of the observation-box. She was swaying as usual 

 and this somewhat frightened No. 2, so that he climbed the rope only after 

 three minutes and then jumped to the wire without getting food. This he 

 repeated three times. Then he climbed the rope, tried the door, but failed 

 to push it open. He jumped to the wire at once, after pushing. Then 

 he climbed the rope and opened the door. No. 4 saw in part. No. 2 then 

 tried the door four times unsuccessfully. Climbing the rope brought him 

 close to No. 4 and his fear did not allow him to make a good effort. Then 

 he climbed the rope and opened the door, getting food. No. 4 saw the 

 entire performance. 



No. 2 was then removed and No. 4 was released. She climbed the wire 

 on the front of the cage and then on the end. Then she climbed the rope 

 and reached to the hole in the top of the cage. She looked at the door, 

 put her nose to it, and jumped to the front wire, and went to the floor. 

 She then climbed up and down the front and climbed the rope looking at 

 the door and jumping to the front of the cage. Again, she climbed the 

 rope and looked all about the door more intently than before. She re- 

 turned to the floor, climbed the end of the cage and perched on the brace 

 at X. Again she climbed the rope, examined the top of it, and looked 

 all about the door. Then she became interested in out of doors and soon 

 her time was up. 



Second test. No. 4 was in the box as before and No. 2 was somewhat 

 slow and fearful. No. 4 saw five of No. 2's twelve performances com- 

 pletely ; four other times she saw a part of the performance. 



No. 2 was removed and No. 4 was released. She climbed the rope at 

 once (5 seconds) and smelled and licked the door. Then she returned to 

 the floor. She again climbed the rope and examined the top of it. She 

 looked at the food door carefully, but after coming to the floor she gave 

 no further attention to the rope or the door. 



No. If imitating No. 6.* — Third test. No. 4 was in the box on the floor. 



Performance 1. No. 6 climbed at once to the door, pushed it open with 

 his hand and got food. No. 4 saw him smacking his lips when the food 

 was gone, but saw nothing more. 



P. 2. No. 4 saw No. 6 reach through the open door and get food, but saw 

 nothing more. 



In the sixteen following performances No. 4 saw the entire performance 



*The behavior of No. G will be given later, page 385. 



