174 ANIMAL INTELLIGENCE 



direction of development, and what manner of dog the 

 individual becomes. It is education in the more 

 limited sense. 



The order of development of the senses and co- 

 ordinated movements as well as reflexes, and the mani- 

 festation and perfecting of instincts, have a distinct 

 relation to the needs, as well as the general develop- 

 ment of the animal, e.g. smell is always more impor- 

 tant to the dog than any of his other senses, and it is 

 early developed. The same remark applies to the 

 movements of the jaws and the limbs over those of 

 other parts. 



The detailed study of the development of the dog, as 

 recorded in the foregoing pages, illustrates how depen- 

 dent all subsequent advancement is on the early and 

 full development of the senses and co-ordinated move- 

 ments. They bring the nervous centres into contact, 

 so to speak, with the environment. 



The same is illustrated in the study of the human 

 infant ; but in the case of the dog the investigation is 

 not surrounded by the same complications or, at all 

 events, prejudices. 



Although it is not possible as yet to determine the 

 physical and psychic correlations down to the minutest 

 details, from what has been accomplished; it seems 

 reasonable to hope that a complete correlation may be 

 ultimately established. 



The first sixty days of a dog's existence are of so 

 much more consequence than any later period, that the 

 writer has decided to limit this paper to this period, 

 within which almost all important features in develop- 

 ment appear. 



