Biological Papers. 149 



cells of complex organisms could not modify their internal struc- 

 ture and multiply in number to meet increased needs nor fail to do 

 so when disused. All our notions of efficiency compel us to be- 

 lieve that there are cell egos as well as individual egos to con- 

 sciously superintend the multiform activities of every organism 

 composed of many cells. 



Man in some respects is in a class by himself. Language, with 

 its rich supplies of concepts, is such a help to the conscious pow- 

 ers that this lord of creation can determine by a course of reason- 

 ing what is best to be done long before his body can evolve parts 

 with which to doit. So he makes external provisions for hisneeds, 

 and many of his body cells and organs, except those of his brain, 

 stop evolving higher powers. It is for this reason that man's body 

 is on a level with the world of animals, while his mind has kinship 

 with the God of the universe. 



i; 



