Berry, Imitation in White Rats. 



355 



but with no positive results; his coughing and sneezing seemed to 

 rob him of his spontaneity. 



No. 5 was put into the box alone. He soon found the wire 

 and pulled it three or four times, running to the door after each 

 attempt. At the end of fifteen minutes he succeeded in getting 

 out. The following table shows the time of learning. 



Date 

 Feb. 19 



\o. 6 



pets out 



1st time 

 2d time 

 3d time 

 4th time 

 5th time 

 6th time 

 7th time 



IS' 



^/ 



J 



15" 

 90" 

 15" 

 15" 

 15" 



NO. 7 IMIT.ATING NO. 6 



A^o. 7 follows 

 A^o. 7 sees No. 6 out 



No. 7 

 gets out 



Time 



Feb. 21 



Feb. 23 

 Feb. 23 

 Feb. 23 

 Feb. 23 

 Feb. 23 

 Feb. 23 

 Feb. 23 

 Feb. 23 



3' 

 30" 

 15" 

 30' 

 20" 



60" 



Totals 



No. 7 was put into the box alone. He succeeded in getting out 

 by pulling the wire after thirty minutes. When put back he went 

 to the wire, touched it and ran to the door; again he returned to 

 the wire, pulled it a little and ran to the door. This he did several 

 times and then gave it up, making no further effort to escape, 

 although left in the box for forty minutes. I then put No. 6 in with 

 No. 7. No. 7 followed him very closely, stood up beside him at 

 the wire, and took hold of the wire after No. 6 had opened the door. 

 When No. 7 was put back he tried the wire and ran to the door. 

 The next two times when put back he pulled on the wire and then 

 ran to the door, but after that he made no further effort to get out. 

 The next day he got out in three minutes when put in alone. 



