THE EVOLUTION OF MAN 



kingdom on account of his physical structure, 

 which showed that he belonged to the mammals/ 

 and more definitely in the group of monkeys. 

 Indeed, if we wish to build up any system even 

 in our day, that is the only logical conclusion 

 at which we can arrive. Man is not a simple 

 mineral, he is a living being. Unless he is fed, 

 he dies; that is to say, his form of existence is 

 that of living beings who are compelled on pain 

 of death to assimilate food. If we pinch his arm, 

 he cries out ; in other words, he feels, and he has 

 that peculiar faculty which we are accustomed 

 to associate with the word "life," the faculty of 

 suj)jjejrtiyjr feeling. Furthermore his food is of 

 a definite kind. He cannot feed on pure mineral 

 substances, he requires either vegetable or animal 

 matter, he needs bread instead of stones, and of 

 the elements of the air he can utilize only oxygen. 

 This classes him with the other members of the 

 animal kingdom in distinction from plants which 

 feed on the soil. 



Again, in the animal kingdom there are two 

 main groups. It is true that Linnaeus himself 

 was not familiar with this distinction, but we 

 have learned it since then. The individual body 

 of the animal in one of these groups consists 

 of only one so-called cell. It is one solitary little 



