[MiLLS] PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 209 
REMARKS ON THE Diary. 
Since I propose to make a comparison between the development of 
the dog and the cat in another paper by which more instructive results 
may it is hoped be reached, the remarks that follow are to be considered 
rather in the light of suggestions as to some of the ways in which the 
diary may be utilized than as a commentary at all complete. 
It will be seen from the records that the evidence for taste and smell 
before the 3rd day is not very convincing ; that the evidence for a temper- 
ature sense, the feeling of pain, ordinary reflex action from tactile sensi- 
bility, etc., is more conclusive. 
By the 6th day a great advance is recorded in regard to all these 
qualities. 
Fatigue is still readily experienced. 
Sometimes as e. g., on the 9th day an apparently decided advance is 
shown in a single day. 
The experience of fear or surprise seems to be experienced first about 
the 9th day though the sense of hearing, if we except that uneasiness 
and crying that results almost from the first when the animal is removed 
from its usual surroundings. 
The spontaneous movements of the ears and more doubtful move- 
ment of the tail on the 10th day are worthy of note. 
Attention is called to the advances in vision as noted on the 11th, 
13th, 14th, 18th,-22nd, 25th, 26th, etc., days. 
On the 8th day the eyes began to open, but hearing was then estab- 
lished. 
On the 11th day winking is caused reflexly by the movement of an 
object before the eyes at the distance of $ inch. 
On the 13th day the pupils respond to light. 
On the 14th day a small object is followed by the eyes. 
The 16th day was memorable as on that day was noticed the first 
licking of the paw, the first act of scratching and the first play, 
On the 18th day the nose, uncoloured at birth, began to pigment. 
The 21st day furnishes evidences of recognition by the kitten of its 
box as its home, for after being out it returns to it and climbs in. 
Attention is directed to the various stages of development of muscular 
co-ordination, as illustrated by the kitten’s toilet-making, play, getting 
in and out of its box, and from one object to another in the room, and 
which can be followed from the somewhat full records of facts bearing on 
this subject. The records of certain days are clear on this point, e.g., 16th, 
18th, 21st, 23rd, 28th, 29th, 30th, 32nd, 33rd, 37th, 51st. 
The behaviour of the kitten towards the same dog at different times, 
and as compared with the second dog, seems to me to indicate an interest- 
ing struggle between instinct and other qualities, and shows how the re- 
Sec. IV., 1895. 14. 
