388 Jourtial of Comparative Neurology arid Psychology. 



Performance 1 to P. 4. No. 5 saw No. 2 push the door open with his hand 

 in his usual way. 



P. 5 to P. 7. No. 5 did not see. 



P. 8. No. 5 saw No. 2 at the door with the food and tried to get out of her 

 box. This frightened No. 2 and he became quiet. 



P, 9. No. 5 did not see No. 2 until he jumped back to the wire with food. 



P. 10. No. 5 saw perfectly. 



No. 2 was taken out and No. 5 was released. She walked about the floor and 

 made some efforts to push her hand through the wire to get a paper and to 

 reach the belt. Then she climbed the rope, stopped when half way up to spat 

 a fly, climbed to a small hole above the food door and tried to see out. Then 

 she went down to the floor, walked about and climbed the wire. She jumped 

 to the rope, but took no notice of the door. This she repeated later. Then she 

 went to the floor, became quiet and curled up to sleep. 



Third test. No. 5 was put into the observation-box on a level with the upper 

 part of the i-ope and the food door. 



Performance 1 to P. 3. She saw perfectly. 



P. 4. No. 5 saw nothing. 



P. 5. No. 5 saw perfectly and jumped at the side of the box as if to get food. 



P. 6. No. 5 saw in part. 



P. 7. No. 5 saw perfectly. 



No. 2 was removed and No. 5 was released. She ran up the rope, but took 

 no notice of the food door. She examined the top of the cage with the eye 

 and hand and returned to the floor. She then climbed the rope and examined 

 the food door with her eyes and hand, but did not push on it. She then 

 climbed the wire from the floor and returned to the floor and looked about. 

 She crouched near the door and slept, curled up in a characteristic fashion of 

 her own. 



Fourth test. No. 5 was again put into a box on a level with the food 

 door. No. 2 was free in the cage. He got food sixteen times. Five of 

 these performances No. 5 saw completely; five other times she saw in part. 



No. 2 was removed and No. 5 was released. No. 5 at once climbed the rope, 

 but a noise frightened her and she jumped to the wire front at once. Then she 

 climbed about the wire and walked about the floor. Next she climbed the 

 i-ope and looked and smelled about the food door. She returned to the 

 floor and crouched in one corner. Then she lay down and slept. 



Fifth test. No. 5 was put into a box on a level with the food door. No. 

 6 was used instead of No. 2. 



At no time did she seem interested in No. 6. Her seeing was accidental 

 and passive. At times when she saw No. 6 going up the rope or at the 

 door she would turn away to look at the floor of her box. No. 5 saw five of 

 fourteen performances completely ; five other times she saw in part. 



No. 6 was then taken out and No. 5 was released. She spent the entire 

 ten minutes on the floor and in climbing the wire parts of the cage without 

 once going to the rope. At the end of ten minutes she climbed the rope 

 and looked at a crack in the cage door and at a hole in the top of the 

 cage. She took no notice of the food door while on the rope. 



