CHANGING IDENTITIES 



observation, therefore, the primary spheres thus 

 held together in the new identity of the atom must 

 be closer together than it is possible for all the 

 primary spheres of void matter to be. (Prop. IV, 

 B.I.) 



Therefore, the primary spheres of atoms of or- 

 ganized matter are held together in the closest pos- 

 sible contact. 



Again, every substance has height on thickness 

 as well as length and breadth. Therefore, it is 

 altogether unlikely that primary spheres should 

 combine in plane layers. Then, the first distinctive 

 form is that produced by four spheres, which in 

 closest possible contact approach the form of a 

 pyramid whose sides are equalateral triangles. 



Therefore, etc. 



PROPOSITION VII. 



(Ocular Demonstration.) 



Atoms of different elementary substances are not 

 identical in form, for every addition of spheres, to 

 any form built up of spheres, makes a new form. 



Atoms of different elements have different 

 weights. (Scientific data.) But primary spheres 

 of void matter added to any substance, while it 

 is increased in degree of heat, adds no weight. 



Therefore, the increase of weight in the atom of 

 one element over the weight of the atom of an- 



43 



