Haggerty, I nil tail on in Monkeys. 367 



He seemed afraid of No. 11. Wlieu he would work uo more, he was taken 

 out and No. 4 w^as substituted. 



No. 4 operated the chute eleven times. Nine of these performances No. 11 

 saw. He was alert and every muscle was tense. 



In all, No. 11 had seen ten times during this test and a total of twenty 

 times in the three tests. 



No. 4 was now removed and No. 11 was released in the cage. He first 

 looked over the floor for food and finding none, climbed the wire front and 

 went over to the chute, shaking it with such vigor that he almost tore it 

 loose from the top of the cage. Jumping back to the brace he went to X 

 and to the floor. Passing to a position immediately under the chute he 

 jumped up to it from the floor and climbed up on it. Without stopping to 

 make examination he swung his body down, held to the rung with one 

 hand, placed his feet against the back of the cage for support and, thrust- 

 ing the other hand up inside the chute, pulled the string. The food fell 

 onto his chest and on the floor. The time, from the removal of No. 4, was 

 60 seconds. 



Having eaten the food, he again jumped to the chute and in the same 

 position tried to pull the string, but not being able to hold his weight with 

 one hand he had to catch with both ; he then pulled himself up on the 

 chute, and having regained his equilibrium swung down and got food as 

 before. 



Again he jumped to the chute from the floor, catching the rung in one 

 hand and curling up so as to grasp the rung with his feet also. Then holding 

 by his feet and one hand, he thrust the other hand into the chute as before 

 and got food. He repeated this in exactly the same way, at once. Again he 

 repeated this in the same way, except that he placed his feet against the 

 back of the cage instead of on the rungs of the chute. From this time on he 

 got food as rapidly as he could eat it, most of the time hanging below the 

 chute with his feet braced against the back of the cage. 



Summari/ of Behavior of No. 11 in Chute Experiment B. 



No. ll's preliminary trials were much like those of No. 13 and No. 4. 

 They ended with No. 11 not having got food and with his being indifferent to the 

 means of getting it. The stimulus-complex w^as the same as in the case of 

 No. 4, i. e., No. 11 saw No. 4 getting the food and experienced the result of her 

 act himself. When he was released from the observation-box, his behavior 

 was different from what it had been in the preliminary trials. However, it 

 was not sufficiently like the behavior of No. 4 to bring the same result. His 

 attention had been directed to the chute, but not to that part of it which 

 would enable him to get food. 



After his second observation his interest in the chute seemed increased, 

 as evidenced by the great vigor with which he shook it. The third test 

 seemed to direct his attention to the important part of the mechanism and 

 he succeeded in getting food as No. 4 had done in his presence. Tiie result, 

 in the case of No. 11, differed from the result in each of the previous cases 



