The Mental Life of the Monkeys 



231 



length of time the animal failed. Figures without an F de- 

 note the time taken by the animal to operate the mechanism. 

 As a supplement to Table 12! have made a summary of 

 the cases where the animals did succeed after tuition, that 

 shows the nature of the act shown them as compared with 

 the act they made use of. 



SUPPLEMENT TO TABLE 12 



APPARATUS 



MODEL GIVEN OR ACT 

 PUT THROUGH 



ACT OF No. i 



ACT OF No. 3 



ooo 



QQ 



RR 

 W 



QQ(a) 



QQ(b) 



QQ(c) 



Delta 



Theta 



To pull upper 

 string. 



To push bar in. 



To pull plug out 

 with right hand. 



To pull loop off nail 

 [with right hand. 



To pull bar around 

 toward him. 



To pull bar around 

 toward him in 

 2\ continuous 

 revolutions. 



To take nail and 

 pull directly out- 

 ward. 



To push bar to right 

 with right hand. 



To pull bolt up with 

 right hand. 



Pulled both strings 

 alternately, but 

 upper enough 

 more to succeed. 



Inserted fingers be- 

 tween bar and its 

 slot and pulled 

 and pushed 



vaguely. 



Pulled and bit. 



Similar. 



Pulled back and 

 forth indiscrimi- 

 nately. 



Pulled back and 

 forth indiscrimi- 

 nately. 



Pulled back and 

 forth. 



Pulled back and 

 forth indiscrimi- 

 nately. 



Similar or nearly so. 



Did before tuition 

 by pulling wire; 

 after tuition by 

 chance movement 

 of head. 



Pulled door and 

 worked bolt loose. 



