18 Dynamic Evolution 



Another distinction between the organic 

 and the inorganic is the extent to which we 

 may practically extract and make use of the 

 available energy. With inorganic bodies we 

 may utilize the last particle of available 

 energy which we can obtain, but not so with 

 organic bodies. With organisms we must 

 leave behind enough of the obtainable energy 

 to keep the machine running, otherwise the 

 organism will die or become wrecked as a 

 further source of energy. A still further dis- 

 tinction is that organisms automatically re- 

 plenish their supply of available energy. 

 They are nature's machines for automatically 

 storing energy in a form available for the 

 performance of work. 



In the organic world we find bodies having 

 forms of energy peculiar to themselves, which 

 energy acts to individualize the bodies with 

 which it is associated. The energy in these 

 bodies continues, but the bodies themselves 

 are a combination of the periodic and the 

 transient in existence. We may not know 

 what these forms of energy are, but we are 



