454 NATURAL SUBDIVISION OF THE CEREBEAL HEMISPHERE. 



hybrid conveys some idea as to the meaning of the expression. 

 No one is more conscious than the writer of the many obvious 

 defects of such terminology, which he will be quite willing to 

 sacrifice if some one will suggest a happier phrase to indicate 

 that region which is, in reality, the ultimate product of the 

 evolution of the vertebrate fabric. 



