MECHANISM OF NATURE 



But the volume is made up of organized matter 

 plus that amount of void matter which fills the 

 interstices, and consequently, if the lighter gas 

 volume holds less organized Atoms, it holds more 

 void matter. And whatever we deem the real 

 nature of heat to be, this inflow of void matter 

 into the interstices of a substance expanding by 

 heat gives the radical unit of heat. One P. S. 

 changed in position from without the substance 

 to within the substance. 



The flow of void matter, from the body con- 

 tracting by withdrawal of heat, to the body ex- 

 panding by heat is a necessary result in a Universe 

 that is full. Yet the mere change alone of a Pri- 

 mary Sphere of void matter from a position out- 

 side of a body to within a body cannot produce all 

 the phenomena of heat. 



Whenever we observe heat passing from one 

 body or substance to another, we may also observe 

 a resistance to the necessary expansion. And that 

 resistance is as much a part of the nature of heat 

 as is the expansion. If it were not, heat would 

 be like gravity, producing equal results on equal 

 masses. But what is that resistance ? 



In the experiment illustrated by Fig. A there 

 are no gas particles added by the added heat. 



Neither is it possible to crowd in more void mat- 

 ter, for the Cylinder is full of gas and void matter. 

 Then the pressure must come from without the Cyl- 

 inder; and the resistance to that pressure is evi- 

 dently in the solidity of the cylinder, for nothing 

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