IO4 



Animal Intelligence 



animals failed because they did not attend to the process 

 of being put through the movement, that, had they attended 

 to it, they would later themselves have made the movement. 

 It is, however, improbable that out of fifty times an animal 

 should not have attended to what was going on at least two 

 or three times. But if seeing himself do it was on a par with 

 feeling an impulse to and so doing it, even two or three 

 times would suffice to start the habit. And it is even more 

 improbable that an experience should be followed by keen 

 pleasure fifty times and not be attended to with might and 



1 FF was a box 40 X 21 X 24 inches, the door of which could be opened 

 by putting the paw out between the bars to its right and pulling a loop which 

 hung 1 6 inches above the floor, 4 inches out from the box and 6 inches to 

 the right of the door. 



2 KKK was box K with both bolts removed. All that had to be done 

 was to poke the paw out at one side of the door and press down a little bar of 

 wood. 



3 The cats and chick were left in for two minutes at each trial, the dogs 

 for from one to one and a half minutes. 



