22 THE EVOLUTION OF CONTINUITY 



tinuity to form the beautiful structure which is the crystal. 

 The amorphous mass has molecules as its highest units, 

 the crystalline has definite bodies composed of many mole- 

 cules in continuity. 



Artificially, Man can produce endless systems of Con- 

 tinuity higher than molecular. For example, he can make 

 a large number of similar bricks ; can unite them together 

 to form a house ; can make a number of similar houses 

 joined together in a row ; can make a town composed of 

 rows of tenements, and so on ; but such action is not 

 inevitable. 



