PSYCHIC CHARACTERISTICS OF THE DOG. 15 



into further details, suffice it to say that the processes of 

 the various cells are subordinated to the general good 

 through the nervous system, and that susceptibility of 

 protoplasm to stimuli of a delicate kind which enables 

 each cell to adapt to its surroundings, including the influ- 

 ence of remote as well as neighboring cells. Without this 

 there could be no marked advance in organisms, no differ- 

 entiation of a pronounced character, and so none of that 

 physiological division of labor which will be inferred 

 from our brief description of the functions of a mammal. 

 The whole of physiology but illustrates this division of 

 labor. 



It is hoped that the above account of the working of 

 the animal body, brief as it is, may serve to show the con- 

 nection of one part functionally with another, for it is 

 much more important that this should be kept in mind 

 throughout than that all the details of any one function 

 should be known. 



PSYCHIC CHARACTERISTICS OF THE DOG. 



We use the term psychic in contrast with physical as 

 implying all that relates to the mental traits and the dis- 

 position ; in fact, all not purely animal or physiological. 

 The term is of wider significance than either "mental" 

 or " moral," and includes both. 



While no doubt savages and prehistoric men early per- 

 ceived that the dog possessed qualities which would aid 

 them in accomplishing the aims of their life in the chase, 

 etc., a little reflection will show that, apart from those 

 characteristics which have made this animal man's closest 

 companion of all the forms of life below him, the useful 



