EVIDENCES OF INSIGHT 43 



again climbed to top of beam his first pull on the rope freed it and allowed 

 it to swing as usual from middle of beam to within a few inches of the 

 floor. As soon as the rope swung free from the beam he scurried down 

 to the floor, seized it and began to swing on it some 2 feet from the floor, 

 looking at the banana constantly. Twice he allowed himself to 

 swing with the rope. The movement was almost entirely rotary, but 

 he controlled it perfectly, causing himself either to spin around or to 

 hang quietly without touching the floor. Having made this swinging 

 test and observation, he dropped to the floor and holding the rope with 

 one hand ran back with it for 5 feet toward the outer end of the room. 

 He then threw his weight on the rope and allowed it to swing him toward 

 the banana. The first swing brought him within 2 feet of the banana. 

 The second time he swung still further, and on the third attempt he 

 grasped it and dropped quickly to the floor to eat it. Time, 4.50. 

 The whole period of effort was about fifteen minutes and during this 

 time his attention seemed to be almost continuously directed to obtain- 

 ing the banana. 



I next measured his reach standing on the floor and discovered that 

 he could easily reach 70 cm. I therefore placed a piece of banana on the 

 string at 100 cm. from the floor. Almost before I could step back he 

 was under it and with one spring upward grasped and secured it. 



In order to discover what he would do when the banana was placed 

 so high that it could not be reached from the swinging rope, at 5.10 I 

 placed a piece on the string 180 cm. from floor with the rope hanging 

 free as usual in middle of beam. He immediately made a general survey 

 of the situation, then climbed to rear beam, scrambled along it and with 

 his hands felt the edge of rafter leading toward banana. The roof 

 boards fitted so closely that he could get no hold, so he turned back and 

 dropped to the floor. Almost immediately he ran to the outer beam, 

 climbed up and resting on it pulled the rope up to him. Stretching him- 

 self out on the beam he grasped the rope with one hand, looked toward 

 the swinging banana and jumped for it, one arm outstretched, the other 

 holding the rope. His aim was perfect. He grasped and held the piece 

 of banana and with scarcely a jerk because of the skill with which he had 

 measured distance and rope, he swung back, dropped lightly to the floor 

 and ate his prize. Less than five minutes elapsed between the beginning 

 and the end of this observation. Attention and effort were continuous. 



Chim was now removed to living room and preparations were made for 

 box stacking test. The continuity of attention, rapidity of motion, 



