Berry, Imitation m Cats. 



13 



T.ABLE X. 



T im it at in a X. 



TABLE XL 

 Z imitating X. 



My next method was to roll the ball into the hole four times in 

 succession myself, and then place it in the farthest corner of the 

 triangle, and leave Z alone with it for five minutes. Z was given a 

 small piece of meat each time the ball went into the hole. During 



