EVIDENCES OF INSIGHT 39 



ADAPTABILITY 



Of some value as evidence of the sort of intelligence which 

 is designated as "insight" is the response of the animals to 

 such unusual treatment as that of the surgeon and the 

 anthropometrist. When Chim and Panzee were treated 

 for hookworm, Chim, although much stronger and therefore 

 more able to resist the treatment than Panzee, quickly sub- 

 mitted to having his jaws wedged apart, the stomach tube 

 placed in his throat, and the drugs administered. He acted 

 as though he were willing to accept the situation on faith 

 and relied on our judgment. Panzee, by contrast, struggled 

 from first to last against the insertion of the jaw wedge, of the 

 stomach tube, and the administration of the medicines. 

 She took nothing for granted and exhibited no confidence in 

 us or willingness to adapt to what evidently struck Chim as 

 the inevitable. This is typical of the behavior of the animals 

 in connection with medical and surgical experiences. 



Again, when attempt was made to weigh the chimpanzees 

 Chim permitted himself to be placed in the basket of a scale 

 and, although obviously puzzled and slightly disturbed by 

 the unusualness of the situation, he sat quietly until the 

 reading had been made. When effort was made to put Pan- 

 zee into the basket she scrambled out unceremoniously and 

 continued to do so with each repetition of our attempt. 

 Finally as a means of circumventing her unadaptability, the 

 idea came to me of placing the animals in the basket together 

 so that she might be assured by Chim 's presence. The first 

 time this was tried Panzee scrambled out, but with less show 

 of alarm and resentment than formerly. The second time 

 she remained for a few seconds. Subsequently it was pos- 

 sible to read the combined weight of the animals and by sub- 



