402 'Journal of Comparative Neurology and Psychology. 



ested lu the screen. Wheu ouce bis attention was centered on the screen 

 he verj soon repeated the behavior of No. 4, not at first in a perfect way, but 

 in his fifth effort he did it in exactly the way No. 4 had done the act in his 

 presence. 



TABLE 19. 



No. 6 Imitating No. 4. 



D. Behavior of No. 5. 



Preliminary trials. — First trial. No. 5 examined the cage all over, but 

 she manifested no particular interest in the screen. After ten mintues she 

 looked it over slightly. 



Second trial. On the second day she looked out through the wire, poked 

 her fingers through the hole in the door, and then went to the screen and 

 pulled at the screw eye. She was quite active, climbing about the cage 

 rapidly. Ouce more she went to the screen, and then spent the remainder 

 of the time catching flies. 



Third trial. On the third day she bit at the screen frame and pulled at 

 the screen during the first few minutes. She then spent the rest of her 

 time as on the previous day. 



Fourth trial. On the fourth day No. 5 showed more interest in the 

 screen at first. She tried to shake the screen fi-ame. Later she fingered 

 the screen and bit at the frame. 



Fifth trial. On the fifth day No. .5 bit at the screen frame several times 

 and climbed upon it twice. Most of the time, however, she spent in other 

 parts of the cage. 



Imitation tests. — Ao. J imitating No. 4 and No. 6. — In all of the following 

 tests the two animals were in the cage together. 



First test. No. 5 was somewhat wary of No. 4 and did not come near. 

 She saw No. 4 open the screen once in three times. When No. 4 was taken 

 out No. 5 went to the screen and examined it, but she gave it no persistent 

 attention. Later she fingered the lower edge of the screen. 



Second test. No. 5 was attentive and saw the lifting of the screen five 

 tiuies. 



When No. 4 was out No. 5 went at once to the screen and pulled at the 

 top of it. She then ceased to be interested in it and e.xamined other parts 

 of the cage. 



