THE PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 129 
I notice one sleeping and another licking its face 
after feeding, using its paw with movements closely 
akin to those of the fore-limb against the mammary 
glands when sucking. 
I can observe a very considerable advance in the use 
of the hind limbs in walking in four days. 
During the night one of the puppies had got out of 
the pen and was making loud outcry and trying to get 
back. 
24th day.—-Special tests as to sucking finger gave the 
following results : 
Some on one occasion suck the finger, others do not. 
Later, three were tried, one asleep or almost so, the 
others not, but all sucked the finger tip. 
One lying sucks the finger, and puts up its fore feet 
towards the hand, and spreads the claws, at the same 
time moving the hind limbs somewhat. 
One, when standing and sucking at the finger, also 
lifts its paw. 
25th day.—A piece of meat held before the nose of a 
sleeping puppy at a distance of 24 inches wakes it 
(smell). When this piece of meat is rapidly moved 
before the face at 3 inches, it is as rapidly followed 
by movements of the head. Was this owing to smell, 
or sight, or both ? 
When the meat is put into the mouth it is not 
merely sucked, but an attempt is made to chew it. 
When the hands are clapped sharply once, starting 
is produced, suggestive of more than a mere reflex— 
possibly real fright. When I whistle somewhat lightly 
some of them bark. 
26th day.—When I whistle at the distant end of the 
pen they bark, some of them, but, employing the lip- 
call, they move in that direction. 
Moving a small piece of rag before them as was 
done with the meat yesterday, causes similar correspond- 
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