1873.] 



195 



[Chase. 



II. Triple Planetary Series. 



The significance of the above table may, perhaps, be increased, by the 

 following considerations : 



1. Each series precisely represents actual planetary positions. 



2. The combined influence of the three series is such as to produce 

 planetary eccentricity, and to give an approximate value of such eccen- 

 tricity for each planet. 



3. In centrifugal emanation and centripetal acceleration, the uniform 

 velocity of radial light and circular revolution, orbital inertia and ten- 

 dency to centres of linear oscillation, elasticity and harmonic undulations 

 in elastic-media, there are verue causae which might lead us to look for 

 each of the three series. 



4. Each series seems t^exert a nearly equal influence upon the planeto- 

 taxis, as is seen by the observed and theoretic sums. 



5. The accordance between the theoretic and observed values, is almost 

 precisely equal in the harmonic and circular series (within about T y of 

 one per cent.) and more than six times as close as in the Bode series 

 (more than 3 of one per cent). 



6. The two predominant gravitating tendencies in the solar system are 

 towards the Sun and towards Jupiter. 



7. The centre of gravity of the Sun and Jupiter is at about 1.066 X 

 solar radius from the Sun's centre. The mean aphelion centre of plane- 

 tary inertia (9.6615) is about 1.069 X the mean perihelion centre. Jupi- 

 ter's mean eccentricity (.0432) is about § X the solar-jovian eccentricity 

 (.006)- 



