THE PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 243 
There seemed to be little more to record though they 
were kept to maturity. Other litters were also studied 
with the same result. 
Fiemarks on the Diary of the Rablit. 
By a comparison of the records for the common and 
the pure-bred rabbits, it might appear that the latter 
were, In some respects, in advance of the former, but 
this is apparent rather than real, I think, as in the 
common rabbit observations were probably not made 
quite early enough in some instances. 
The marked development of tactile sensibility at so 
early an age in the rabbit is very noteworthy. The 
creature also responds unusually well, as compared with 
other animals, as the dog and cat, to parn-producing 
stimuli. 
While there is the same uncertainty as to taste and 
smell at birth, and for a day or two, upon the whole, the 
evidence is in favour of the rabbit being in advance 
somewhat of the dog and the cat in these respects. 
The total absence of voice in the young is in harmony 
with the sparing production of sounds by the adult. 
The movements of the ears, while more marked, are 
more akin to those of the dog than of the cat. 
Movements are developed sooner in the rabbit, and 
more rapidly become of the kind characteristic of the 
animal group than in the dog or cat. 
The very early date (2nd day) on which scratching 
was observed, illustrates the rapidity with which co- 
ordinated movements reach a considerable degree of 
complexity. 
The very early date at which jerky movements are 
manifest, and which are later represented by that rapid 
scurrying toward a burrow, etc., is noteworthy. Few 
animals equal the rabbit in this, and the early develop- 
ment of these movements affords another instance of 
