THE PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 127 



A bandage placed over the eyes soon causes sleep. 



Up to the present date the only nourishment received 

 has been the mother's milk, but to-day artificial feeding 

 with cow's rriilk diluted was added. The first attempts 

 at lapping, though far from perfect, were fairly good 

 much better than the first attempts at swallowing fluid 

 artificially introduced. It is noticed that they follow up 

 slowly the spots where milk had been spilled. After 

 each feeding they lick each other's faces thoroughly.* 



19^ day. The attendant reports the puppies as 

 barking when he entered, as if at him. 



The lip-call, at a distance of 6 to 8 feet, causes 

 them to prick up the ears quickly, which is soon 

 followed by crying (expectancy of food possibly). 



One of the puppies scratches his own ear. 



Teeth are appearing that for some days could be 

 felt beneath the gums. 



20th day. Some get additional teeth. 



2lst day. Certain motor manifestations are worthy 

 of special mention. 



Tails are wagged during play, and walking with tail 

 held erect is seen for the first time. 



Several of them tried to get out of the pen. 



When the muzzle is held by the hand both hind 

 legs were used in an attempt to remove it. (Will or 

 reflex ? ) 



The hand moved before the face, as if to strike, 

 causes winking. 



Now they seem to hear almost every sound made in 

 their compartment of the kennel, which is about 

 15 by 6 feet. 



22nd day. Some have all the upper incisors, and in 



* During four days I was absent from home, but the puppies were 

 carefully watched and notes taken by members of my family, who are 

 familiar with the ways of dogs, and had frequently been with me 

 when making my investigations on this and other litters of puppies. 



