CONTENTS. XI 



Motions of all the Stars Clusters Nebula Their Number and Forms 

 Double and Stellar Nebulae Nebulous Stars Planetary Nebulse 

 Constitution of the Nebula?, and Forces which maintain them Distribu- 

 tion Meteorites Shooting Stars Page 361 



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 386 



NOTES . 391 



INDEX 445 



