THE PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 195 
As its mother walks upstairs, the kitten crouches 
back from the top, as if to spring on her by surprise. 
52nd day. Again climbs up my back, and remains 
there while I walk downstairs. 
On coming home late I go into the dining-room, into 
which the kitten also shortly walks. 
53rd day.—lI can notice a change in the shape of the 
kitten’s head. It is more elongated, etc. 
Its eyes are also changing colour—getting lighter. 
54th day.—Is very playful all day. 
At night, late, when I go into the dining-room, the 
kitten follows, and, when there, climbs half way up a 
wire-netting door separating the kitchen from the 
dining-room. 
On stroking the kitten to-day it is noticed to purr for 
the first time. 
55th day.—-On stroking the kitten it purrs. Soon 
after, it sits on the table and purrs of its own accord, 
still louder. 
56th day.—Manifests an unusual desire to sit in my 
lap, and on the cushion of the chair between my 
legs. 
57th day.—The kitten eyes very closely, from the top 
of a rocking-chair, a canary bird in a cage at a height 
of 2 or 35 feet, and at about 4 feet distant. 
It also crouches when it sees flies moving on the floor, 
ete. 
A small dachshund dog is brought into the study 
to-day. The kitten puts up its back, erowls, etc. The 
little dog and the kitten are then taken on my wife’s 
lap. The kitten holds off, but looks interested, and 
finally approaches and smells at the dog. 
Spontaneous purring occurs this evening. 
The kitten “washes its face,” first with one paw, then 
the other, in an elaborate way not seen before. 
58th day.—lIt is beginning to be difficult to keep the 
