DISPLACEMENT 



The one thing common to all material is that it 

 must fill a certain amount of space. In every other 

 respect there are differences by which we distin- 

 guish one material from another. 



Our most abstract logic cannot invest void mat- 

 ter with any other qualification than that it must 

 consist of primary spheres, which must ever occupy 

 a certain amount of space. Therefore, the only 

 change P. S. can undergo is a change in position 

 relative to each other and to a positive position 

 in universal space. The position of P. S. in atoms 

 and of atoms in further degrees of organization 

 determines the form of atoms and high organiza- 

 tions, and by a change of position in the atoms the 

 characteristics of the atom may be greatly changed. 

 But a substitution of one sphere or perfectly 

 simular atom cannot produce a change except that 

 such exchange may require space and time. 



A total change of tangible material into void 

 matter cannot happen in a Universe that is 

 full, unless it is simultaneous with the change 

 of an equal amount of void matter into organ- 

 ized matter, for this would not be the additional 

 space required. (Prop. XX.) Whether these two 

 changes take place in the immediate neighborhood 

 of each other, or separated by a great distance, this 

 question does not invalidate or transform the ne- 

 cessity of their simultaneousness. Again, to what- 

 ever cause a universal movement is primarily at- 

 tributed, the changes in matter by force are the 

 result of this crowding for space to occupy. And 

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