46 Very — On a Possible Limit to Gravitation. 



require a much greater stellar condensation than that of 

 our Galaxy. The supposition of an aural vortex would 

 remove the difficulty and would permit us to place the 

 nebula at a much greater distance, giving it linear dimen- 

 sions more nearly comparable with those of our own 

 Galaxy. The extraordinarily rapid expansion must 

 represent a temporary stage of vigorous development, to 

 be succeeded by slower expansion to a final permanent 

 form and quiescence. 



Conclusion. 



The conclusion reached is that the gravitational vibra- 

 tions are probably confined within definite volumes of a 

 universal medium, or magnetic aura, and are limited out- 

 wardly by the form, motion and peculiar properties of 

 this medium which exercises a general control on all 

 gravitative phenomena; so that the larger galaxies 

 resemble discrete organisms, or perhaps a better com- 

 parison would be that of discrete and independent, but 

 intimately related cells of one great organism ; while the 

 inner limit and origin of the gravitational vibration 

 appears to reside in the pulsating surface of the elec- 

 tronic vortex-ring, or least gravitative unit. 



Westwood Astrophysical Observatory, 

 Westwood, Massachusetts. 



