THE PSYCHIC' DEVELOPMENT OF YOUNG ANIMALS. 39 



milk and water any longer, but must have richer food, and considerable attention must be 

 paid to the temperature of the liquid. 



Great improvement is noticed in lai)[)ing milk, though one is oliserved attempting to 

 gulp the milk as it were (hunger, etc.). 



Soon after feeding, the finger placed in the mouth is not sucked but rather chewed. 



The readiness with which all sorts of sounds are heard, even when some distance away, 

 is striking. 



The puppies now follow a small object or a piece of paper (2x3 inches) held witliin a 

 few inclies of the face. 



Much growling in play — also more advanced use of tail. They also wag the tail now 

 sometimes when an object is presented to them or when anything pleases them. They turn 

 the head quickl}' towards any part of the body gently pinched. 



On pinching one of them frequently and rapidl}' much irrilntion is shown by the voice, 

 expression of face, etc. 



They now very frequently stand with the paws on the edge of the inclosing boards of 

 the pen, and show that they would like to get out. The height of the pen is now about 

 fifteen inches. 



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 notice a very considerable advance in the use of the hind limhs in walking in four 

 days. 



During the night one of the puppies had got out of the pen and was making loud out- 

 cry and trying to get back. 



2ifh 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 

 cdaws, at the same time moving the hind limbs somewhat. 



One when standing and sucking at the finger also lifts its paw. 



25M dai/.—A piece of meat held before the nose of a sleeping puppy at a distance of 2i 

 inches wakes it (smell). When this piece of meat is rapidly moved before the face at three 

 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, Init an attempt is made 

 to che)r it. 



When the hands are clapped sharpl}- once, starting is produced, suggestive of more than 

 a mere reflex — possibly real fright. When I whistle somewhat lightly some of them barl{. 



26th dag. — 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 corresponding rapid movements of the head, and it almost seems as if they have 

 some of that sense of fun or whatever it may lie that we witness in older dogs under similar 

 circumstances. 



They can now follow a small ol)iect at the distance of at least one foot ; and at five 



