1881.] 44:9 [Chase. 



5. That the iuter-stellar radial influences are so modified, by mutual ac- 

 tion and re-action, as to become paraboloidal. 



6. That the centripetal influences tend to pi'oduce and maintain nebular 

 condensation, planetary segregation and orbital revolution.* 



7. That the centrifugal influences tend to produce and maintain mean 

 or apsidal positions for the condensed planets. 



8. That the harmonic waves are propagated with the velocity of light. 



9. That the controlling mass of the whole solar system (Sun), as well as 

 the subordinately controlling masses of the extra-asteroidal and intra-as- 

 teroidal belts (Jupiter, Earth), are harmonically dependent upon the os- 

 cillations of the inter-stellar medium. 



10. That the corona-, hydrogen-, and basic-lines serve to link cosmical 

 with chemical, molecular, and other physical phenomena. 



11. That the outermost known planet (Neptune) gives evidences of 

 nebular influence, in its centrifugal as well as in its centripetal abscissa, 

 the centripetal coefficient being the reciprocal of Saturn's, and the centrifu- 

 gal coefficient being the reciprocal of Earth's centripetal. The centrifugal 

 abscissa represents the locus of a nebular surface which would yield plane- 

 tary aggregation in Neptune's orbit, through subsidence-collision. 



12. That the centre of condensation (Earth) has no special centrifugal 

 abscissa. 



13. That the centrifugal abscissas for Venus and Mars point to early 

 apsidal stages of central condensation. 



14. That Earth's centripetal abscissa rei^resents the locus of belt-forma- 

 tion in a nebula extending to Earth's mean rupturing locus (mean peri- 

 helion). 



15. That the elements of the controlling paraboloid are all maxima, Tq, 

 (Sun's semi-diameter), being the locus of greatest gravitating energy ; L, 

 (Laplace's limit), the limiting locus of greatest possible atmosphere ; Ju- 

 piter and Earth, the greatest and controlling masses of their respective 

 belts. 



16. That the velocity of light and Sun's mass, upon which r„ and L de- 

 pend, are also maxima, and all physical phenomena within the system 

 should be in harmonic dependence upon their mutual actions and re- 

 actions. 



47. PJiysical Units of Nature. 



In the Philosophical Magazine for May, 1881, Dr. Stoney republishes a 

 paper on physical units, which he read before the British Association in 

 1874, giving approximate values for L^, Tj, M^ More than five years be- 

 fore his original paper was read, I had communicated to the American 

 Philosophical Societyf the equation, u = g■^ t^, in which u = velocity of 

 light, which Stoney represents by V^ =^ 3 VIII metres per second ; g^j^ ac- 

 celeration of gravity at Sun's equatorial surface ; ^^ =: ^ time of solar ro- 

 tation. 



*See ^, ante, pp. 205-6. 

 tProc. A. P. S., xi, 106-7. 



