Smithsonian Report, 1931. — ^Jeans 



PLATE 4 



N.G.C. 5866 



This Plate and That Opposite Show a Sequence 

 OF Shapes into Which the Greater Number of 

 Nebulae can be Arranged 



It Viegins with the globular fuzzy mass of gas having little or no rota- 

 tion ami eniis with the llat carl -wheel type, like our own Cialactic 

 System, which rotates much more rapiilly. It is believed that this 

 setiuence represenis stages in the evolution of the universe. The 

 last three in this series represent similar stages of evolution, being 

 views taken at dilTerent angles. 



