PREFACE 



THE following pages contain an attempt to penetrate 

 the mystery of space and time with the help of the 

 most modern resources of scientific research. The 

 treatment extends to the Infinite on one side and 

 the Infinitesimal on the other, and seeks to annex 

 a "first order" of each to the vast realm already 

 surveyed and partly controlled by the human in- 

 tellect. The mam thesis of this work is that a 

 universe constructed on a pattern not widely dif- 

 ferent from ours is encountered on a definite and 

 measurable scale of smallness, and another on a 

 correspondingly larger scale. To these universes 

 I give the names Infra- World and Supra-World 

 respectively. 



In studying the characteristics of these two new 

 worlds "new" in the sense of being now for the 

 first time discovered and described I have taken 

 for my basis that last and greatest generalisation 

 of science known as the "electron theory," which 

 has during the last ten years of triumphant progress 

 accounted for all known phenomena of electricity and 

 magnetism, and thus placed the whole of physical 

 science on a new and firm foundation. The now 



