HUMAN LIFE 



comparative structure, so the different 

 subdivisions of human kind show a 

 similar parallel in their distribution and 

 structural similarities or dissimilarities. 



Now the essential point of all that has 

 just been said concerning man's striking 

 structural similarity to certain higher 

 animals and concerning his likenesses to 

 them in other ways, physiological, varia- 

 tional and distributional, is that in these 

 similarities the biologist finds convincing 

 proof of man's origin from, and definite 

 relation to other forms of life. And this 

 must be ever in our minds in all our 

 subsequent discussion. But before point- 

 ing out any of the probable special 

 significances to the biologist student of 

 human life of the undoubted evolutionary 

 derivation of man from lower, non-human 

 forms of life, let us glance briefly at 

 another aspect of the consideration of 

 human origin, namely, the pre-history 

 of man as an animal of unmistakable 

 human estate, but of much more primi- 

 tive human culture than he is at present, 

 18 



