RECAPITULATION 159 



23. How gravitation reverses itself. 

 2-4. Why "perpetual motion'' is theoretically pos- 

 sible. 



25. Why the structure of the sidereal system is so 

 diversified and unsynimetrical. 



26. Why the present constitution of the universe 

 is per se self-sustaining, automatic, and eternal. 



27. It provides practically unlimited time for the 

 leisurely working out of geological and biological his- 

 tory, and, Avhat is no less important, ensures the uni- 

 formity of temperature and of general conditions indis- 

 pensable to the orderly development of evolutionary 

 species of plant and animal life. 



28 It inverts the order of star ages. The hottest 

 are the oldest, not the youngest as heretofore supposed. 



29. It gives the key to the nature of the sun's 

 corona and the zodiacal light; they are the spray and 

 mist from the sun's commotion, and wax, wane, and shift 

 accordingly. 



I have not attempted to make this list of solutions 

 complete, but only representative and illustrative of the 

 virtue anl scope of the principles elucidated. It is 

 sufficient to say that I believe these will be found ade- 

 quate to explain almost every mechanical celestial prob- 

 lem, and many terrestrial enigmas of geology, biology 

 and physics not otherwise understandable. 



FINIS. 



