THE PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 171 



developed much faster psychically than St Bernards, 

 and they also mature earlier, physically and otherwise, 

 a remark that applies to the smaller breeds of dogs 

 generally. 



They sooner show, especially in movements, a great 

 superiority, which strengthens the opinion I have 

 expressed, that, among animals, the degree of advance- 

 ment in co-ordinated movements is a fairly good guide 

 to psychic progress at early periods. 



WHAT REMAINS TO BE DONE. I am now anxious, 

 as all my work has been done on pure-bred dogs, to 

 study a litter of mongrels. 



It has been thought well to confine this paper to the 

 study of the early development of dogs. 



I can see the desirability of supplementing this paper 

 by the account of some one dog from birth to maturity, 

 and possibly I may be able to do this. 



I purpose following this paper by another similar 

 one on tfce development of other animals in the earlier 

 periods of existence, considerable material for which 

 has already been accumulated, so that I hope in time 

 to get the facts in such form, that broad and sound 

 conclusions as to development of young animals may be 

 drawn. 



As the dog, after the monkeys and apes, more closely 

 resembles man psychically than any other animal, it 

 seems to me that it would be very profitable to attempt 

 a comparison of the development of the young dog 

 and the infant. But Ihis task must also be deferred. 



For various reasons I have not referred in detail to 

 the fragmentary work of others, chiefly because the 

 original papers are not, in most cases, accessible to me 

 now, and because prolonged discussions and com- 

 parisons with their results would add to the length of 

 an already long paper. I present my observations with 

 such conclusions as I have tried to draw cautiously, 



