350 your72al of Cojnparative Neurology and Psychology. 



Out of the twenty-seven times that No. 2 opened the door, No. 

 6 pulled the string twelve times before following him out. 



Nearly every time that No. 6 was put back after following No. 2 

 out he made an effort to eet hold of the knot with his teeth. After 

 such an attempt he generally would run directly to the door but 

 finding it closed he frequently would go back and try the knot 

 again. 



When first put in with No. 2 he did not follow him so closely 

 as he did after No. 2 had got out a few times. It was also notice- 

 able that he did not try as hard to get out when put back, after 

 having followed No. 2 out fifteen or twenty times, as he did at 

 first. He seemed to depend more and more upon No. 2 to open 

 the door for him. Once I put No. 8 in with him. At first No. 6 

 followed him very closely, but soon gave it up, as No. 8 did not get 

 out. 



NO. 8 IMITATING NO. 2. 



A'o. 2 Xo. S follows Xo. 8 



Date gets out Xo. 8 sees Xo. 2 out gets out Time 



Jan. 19 6 2 6 — — 



Jan. 20 9 7 9 — — 



Jan. 22 9 6 9 — — 



Jan. 23 5 3 5 — — 



Totals 



29 



I first put No. 8 in the box by himself. He tried hard to get out 

 but showed no preference for any particular spot. The first time 

 that No. 2 was put in with him they paid no attention to each other. 

 No. 8 finally followed No. 2 out. But when No. 2 w^as put in the 

 second time. No. 8 followed him very closely, standing up beside 

 him while he was working at the knot. 



Not once in the twenty-nine times that No. 8 was in the box 

 alone did he try to get hold of the knot. He spent nearly all of 

 his time licking a certain spot in the bottom of the box; but as soon 

 as No. 2 was put in w^ith him he quit licking the spot, followed 

 him, and twelve or fifteen times stood up beside him as he was 

 working at the knot. During the trials he spent most of his time 



