AND ITS SELF-CONSERVATION. 177 



brilliantly shown in the course of the development of 

 astronomical science. 



Not only are all those force-centers related one to 

 another, but a number of them,, grouped together with a 

 special degree of intimacy, constitute a complex system 

 through their own mutual relations. The many are 

 inevitably resolved into the one ; or, the many are neces- 

 sarily interrelated, and through their interrelation they 

 necessarily constitute one. 



On the other hand, it is equally evident that the many 

 moving bodies in space, with all the phenomena of their 

 existence, constitute but the manifold outer modes of the 

 all-inclusive, perfectly self-balanced and self -active World- 

 Energy, the primal one, which is the source of all reality. 



We have traced, in brief, the essential characteristics of 

 molar motion.' We have next to inquire what are the 

 fundamental phases of molecular motion. 



