Cries of the Day and Night 



passed between Don and Nip, and which, I have 

 reason to believe, is the common language of the 

 whole animal kingdom. 



To prove such a matter is plainly impossible. 

 Even to investigate it frankly is to enter a shadowy 

 realm between the conscious and subconscious 

 states, where no process can be precisely followed, 

 and where the liability to error is always present. 

 Let us therefore begin on familiar ground by ex- 

 amining certain phenomena which we cannot 

 explain, to be sure, but which have been observed 

 frequently enough to give us confidence that we 

 are dealing with realities. I refer especially to 

 that curious warning or "feeling" of impending 

 danger, which is supposed (erroneously, I think) to 

 depend upon the so-called sixth sense of animals 

 and men. 



