THE PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 231 
feral congeners, and reverts to a wild state more readily 
than the dog—in fact, that such reversion is far from 
uncommon. 
In my first paper on the dog, I have called attention 
to suggestive actions. In the true sense of the word, 
the cat is perhaps less imitative than the dog, but so 
ereat is her tendency to be excited by any kind of 
motion, that she can, as is well known, be set into 
activity, with the greatest ease, by a ball, or almost 
any moving object when a kitten of a certain age. 
In this susceptibility the cat is in advance of the 
dog—in fact, her motor energy is more intense, and 
her power of correlated movement much greater, but I 
am inclined to consider that in all this the cat is less 
imitative than the dog. The behaviour of one kitten 
has less influence on the others than of one puppy on 
his fellows. 
The individuality of the cat is intense, though it 
is the individuality of a strong nature manifesting 
itself by independence rather than great difference in 
conduct. 
As an admirable example of associated reflexes, to 
which reference has been made in treating of the 
dog, the history of the sand-pan furnishes excellent 
examples. 
The whole history of the kitten is an illustration 
that, however strong instincts may be in an intelligent 
animal, its psychic life is determined by experience, 2.¢. 
there comes to be almost no pure instincts—instincts un- 
modified by experience, if such a thing is conceivable, as 
the language of some writers would seem toimply. Each 
day of this kitten’s life showed mea progress dependent 
on experience, and the same applies to the dog; but I must 
add that for the first eight or ten weeks the kitten 
seemed to get the most out of its experience, though in 
the case of the monere!, whose nature, as I have pointed 
