THE EVOLUTION OF MAN 



light, its own "bread" or nourishing vegetable 

 matter. The animal type developed by the grad- 

 ual rise of the habit among some individuals of 

 eating up their mates and thus assimilating 

 "bread" in a prepared form. Evidently this must 

 have happened at a very early stage among the 

 protozoa. Later on the vegetable development 

 went its own independent way. The animal con- 

 tinued to use the plant as a food, with occasional 

 exceptions, where it devoured its own mates as 

 a sort of third alternative. But both types later 

 proceeded on their separate roads. The more in- 

 timate details of plant evolution do not concern 

 us here. Suffice it to say that far down in the 

 scale men are phylogenetically related also to 

 plants, and to this day man still devours them. 



There remains but one question. Man was 

 contained in the germ in the very simplest forms 

 of primitive life on earth. Wherever life goes, 

 there he follows, down to the very atoms of 

 existence. Is there perhaps a last possibility of 

 deriving all life from "something else"? 



I must discuss this question a little more in de- 

 tail. It has always been a sort of parting of the 

 ways for a great many people who thought about 

 the origin of the human race, and in some un- 

 scientific circles this question is frequently played 



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