LIFE IN THE SUPRA-WORLD 135 



10 22 miles will contain the same number of corre- 

 sponding objects as our single mile. We may, 

 therefore, speak of a supra-second as an interval 

 which plays the same part in the supra-world as 

 one second does with us, so long as we remember 

 that its actual length is 10 22 of our seconds. 

 Similarly, we may speak of supra-years, supra-miles, 

 and supra-centimetres. Further, in order to make 

 things more amenable to our imagination, we may 

 mentally reduce the supra-world to our own 

 dimensions simply by calling its supra-miles " miles." 

 In this case we shall, so to speak, adopt the language 

 of the supra-world itself. Then we should obtain 

 the following description: 



"The galaxies have an average diameter of 1 

 millimetre, and are 10 kilometres (6*2 miles) 

 apart. They move about with a speed of from 

 1 to 1000 metres per second. About every minute, 

 or at least every hour, each galaxy approaches 

 another galaxy, but rarely getting very near, and 

 never colliding. Nearly a billion galaxies are con- 

 fined within a sphere of the size of Saturn. This 

 sphere may be called a 'supra-star.' The nearest 

 similar sphere is one light-year away. The galaxies 

 are loosely bound together by their gravitational 

 attraction, which is compensated by a rotation of the 

 supra-star accomplished in twenty-eight hours. In- 

 dividual galaxies often fly out from the surface for 

 some distance, but rarely far enough to be lost to 



