THE PSYCHIC DEVELOPMENT OF YOUNG ANIMALS. 41 



A small Bedlington terrier liitch that had never had puppies was placed amongst them. 

 All rushed around her and tried to sack her undeveloped teats. Then a St. Bernard hitch 

 nearly as large as their dam was placed in their compartment. Though from their mode of 

 sniffing it appeared that they recognized this animal as a stranger, they soon tried to suck her 

 also. 



When they are spoken to in a friendly way they wag the fail and give other evidences 

 of sociability by the/'we. They get upon the edge of the pen with forelegs when either the 

 dam or any person is about to leave them and follow with the eyes, and evidently would 

 with their limbs if they could get out. 



They are not now nearly so easily fatigued by any stimuli, Ijeiiig aide to last out 

 three to four times as long as they could eight days ago. 



2%th day. — Puppies follow a small object at a distance of 7 feet. 



A high pitched peodiar sound causes ear reflexes and barking; while a low jiitched 

 sound imitating barking has very little efiect. 



When a small piece of cloth is dangled before the face of the puppy it tries to catch it 

 with the mouth and raises one foreleg at the same time as if to assist in this. 



N'otieed well executed scratching. 



They seem thus far to prefer milk to broth or meat. 



SQth day. — I did not make special notes of observations on this daj'. 



'i\st day. — It seemed that to-da^' the dam was undoubtedly recognized by sight alone. 



When a bone and the napkin used in the last test of this kind were presented to 

 the puppies each one at once selected the l)one, no chewing of the napkin, which shows a dis- 

 tinct advance since the 28th day. 



They now observe a small object at any part of their kennel compartment, i.e. at 12 

 to 15 feet. 



One was noticed watching with an intelligent expression the movements made in con- 

 nection with photographic apparatus within 5 feet of them. 



When the lip-call is uttered they wag the tail like older dogs. 



i2nd day. — By lamplight a [)uppy follows by his eyes a straw moved before him at three 

 to four inches distance. He also seems much interested in the -s/trt'/ow of my haml on the 

 wall. 



On holding the coal oil lami> near them all licked at the glass cistern containing oil 

 (smell). One or two touched the chimney with the nose or tongue ; but the majority 

 turned away when it was near the nose, while neither of those that had touched the chim- 

 nev went near it again. 



They show sociability with human beings, and a tendency to play with them. 



They become very quiet and attentive when they hear certain kinds of sounds, wliicli is 

 prolonged if the sound continues. 



33«Z day. — When a straw is rapidly moved before them they snap at it to catch it. 



Upon changing the straw bedding in their pen they rub about in it much as old dogs, 

 eAadently well pleased. 



There is a very distinct advance in the ability to lap milk. 



Now w^hen put on the covered floor of the kennel with its covering of sawdust, the\- do 

 not manifest uneasiness as before, but walk al)out and play. One is seen to run at a slow rate, 



Sec. IV., 1894. 6. 



