XVI CONTENTS. 



Number Catalogue of them Consist of Two Classes Diffuse Nebulas 

 Definitely formed Nebulae Globular Clusters Splendour of Milky Way 

 Distribution of the Nebulae The Magellanic Clouds Nebulas round 

 Argus Constitution of Nebulae, and the Forces that maintain them 

 Meteorites and Shooting Stars Page 413 



SECTION XXXVIII. 



Diffusion of Matter through Space Gravitation Its Velocity Simplicity of 

 its Laws Gravitation independent of the Magnitude and Distances of the 

 Bodies Not impeded by the intervention of any Substance Its Intensity 

 invariable General Laws Recapitulation and Conclusion . . . 452 



NOTES 457 



INDEX ... .507 



