586 The Existence of Bodies Smaller than Atoms. [April 19, 



there will be no gas for the corpuscles to ionise, and the negative 

 electrification will increase until it is so intense that the repulsion 

 exerted by it on the corpuscles is great enough to prevent them from 

 reaching the surface of the planet. 



Arrhenius has suggested that the luminosity of nebulaB may not be 

 due to high temperature, but that the luminosity is produced by the 

 passage through their outer regions of the corpuscles wandering 

 about in space, the gas in the nebulfe being quite cold. This view 

 seems in some respects to have advantages over that which supposes 

 the nebulae to be at very high temperatures. These and other 

 illustrations, which might be given did time permit, seem to render 

 it probable that these corpuscles may play an important part in 

 cosmical as well as in terrestrial physics. 



[J. J. T.] 



