FOR THE FIELD AND FIELD TRIALS. 29 



It is impossible to draw a definite line between 

 instinct and reason, but the two as a whole are easily 

 distinguishable. Thus the natural impulse of the dog 

 to hunt rabbits or birds might be termed instinctive, 

 while the manner in which he conducts his pur- 

 suit of them in his efforts to capture is an act 

 of reason. 



The dog's physical structure closely resembles that 

 of man. His brain is somewhat similar in shape and 

 material to man's, and it relatively serves the same 

 purposes. Like man, the dog gains a knowledge of 

 the external world through the means of his senses 

 hearing, seeing, tasting, feeling and smelling, the 

 latter being the one most used ami the most keenly 

 developed. 



The common, everyday life of the dog in and 

 about the home of man displays in innumerable ways 

 a keen perception of cause and effect. He learns to 

 a nicety what privileges are permitted to him, at 

 what time and place and of whom he may expect to 

 receive his food, what, people are most friendly to 

 him, what places afford the most comfortable sleep- 

 ing quarters for summer or winter, what dogs of the 

 neighborhood best romp or hunt to his liking, etc. 



