30 CELL INTELLIGENCE THE CAUSE OF EVOLUTION 



no particles of matter to be agitated or in the ether which 

 is a medium that does not obey the ordinary laws of 

 matter. 



But on the other hand the vibrations that give rise to 

 heat when they encounter material bodies must exist in 

 the ether because it is the ether which carries them, and 

 since ether is not excluded like matter from what we call 

 a vacuum, it follows that these vibrations may exist in 

 the vacuum, in fact, the only thing that a vacuum con- 

 tains is ether. No doubt these vibrations conveyed from 

 the sun by the ether may produce many other effects un- 

 perceived or unknown to us because we have no special 

 nerves or organs of sensation suitable to their perception. 

 The ether you will observe is a very mysterious thing and 

 the discovery of its existence is one of the greatest tri- 

 umphs of human intelligence. It seems to possess some 

 of the properties of matter and yet it defies most of the 

 laws of matter as we know them. To study all the phe- 

 nomena of heat would require the devotion of an entire 

 life time. Have you ever reflected upon the reason why 

 heat can turn iron into a liquid and water into steam? 

 Most persons seeing these things done or knowing they 

 are done every day, think no more about it. It is not from 

 among such persons that the great leaders of human ad- 

 vancement make their appearance. But to return to the 

 answer to our question iron is melted and water is vapor- 

 ized by that very shaking or agitation of their constituent 

 particles of which we have been speaking. The mole- 

 cules or particles of a solid or a liquid are held together 

 by the mutual attraction, not the attraction of gravitation 

 but another sort of attraction called cohesion. The dis- 

 tance over which this kind of an attraction acts is very 

 small. Each particle draws upon its immediate surround- 

 ing particles and they in turn upon others and thus the 



