CHAPTER V 

 INFRA-ASTRONOMY 



1. IT has been shown, so far, that the world of atoms 

 and electrons is a world which is physically and 

 mechanically not essentially different from ours, its 

 chief distinctions being the substitution of electrical 

 for gravitational attraction, and the much greater 

 densities, pressures, and elasticities prevailing in the 

 infra-world. 



Our attention must be now directed to what may 

 be called the astronomy of the infra-world. And 

 since astronomy is a large-scale science, we shall 

 find many links between the infra-world and our 

 own world. These links are due to the remarkable 

 circumstance that (always supposing the infra-world 

 to be inhabited by beings like ourselves), the largest 

 object visible in the infra-world is one of the smallest 

 visible objects of our own world. In other words, 

 the "starry heavens" of the infra-world appear to 

 us as a minute microscopic speck. 



But the minute specks visible to us have very 

 diverse constitutions, densities, and chemical, physical, 

 and biological properties, and the chances are that 

 none of them correspond in structure to our visible 



