LIFE IN THE INFRA- WORLD 33 



the outermost planet. This condition is realised in 

 the Zeeinan phenomenon as observed in a sodium 

 flame; but in solids and liquids, as R. A. Kennedy 

 has pointed out, the conditions are essentially dif- 

 ferent. To find anything resembling them in our 

 own universe we shall have to go to our close 

 clusters; but as long as the electrons we con- 

 sider are in a rarefied gas, we may take it that 

 the conditions are practically the same as in our 

 own terrestrial world. 



