Prof. P. E. Chase on Radiation and Rotation. 129 



v a V/ Tv Therefore, in order to satisfy the conditions of 

 gravity, the asthereal elasticity, within any nucleus which is 

 either wholly or almost wholly gaseous, oc -£ 



Since such is the supposed character of the solar nucleus, it 

 seems not unlikely that, the centrifugal radiations of any hea- 

 venly body being at all times equivalent to the centripetal 

 radiations which it intercepts, solar and stellar light and heat 

 are only the reactionary consequences of such perpetual in- 

 ternal oscillations as the sether has first transmitted to the 

 luminous orbs and then resumed. The fact that the reaction 

 which is shown in the centrifugal force of solar rotation, and 

 the action which is shown in parabolic orbital velocities, find 

 a common limit in the velocity of light, may perhaps be re- 

 garded as a crucial test of this hypothesis, which is further 

 strengthened by the following considerations. 



In the huge comet-like nebulosity which is indicated by the 

 solar-stellar paraboloid, the interesting relation which has been 

 pointed out by Stockwell* between the perihelia of Jupiter 

 and Uranus, and the many indications of normal "subsidence " 

 which I have shown in previous papers, suggest the probability 

 of an early ellipsoidal nucleus with subordinate nucleoli — the 

 major axis of the nucleus being bounded by 2^ 5 (60*939) and 

 2 $ 5 (41*358), and the San being in the focus. The vis viva 

 of condensation would give velocities of incipient orbital sepa- 

 ration at ^ 5 (30*470) and & 5 (20*679); and n l would then be 

 in the centre of the entire system (30*470 — 20*679 -"-2 = 4*885 ; 

 2f. 1= = 4*886), even as © 3 is nearly in the centre of the secondary 

 system (<? 5 + ^-i- 2 = 1*017). 



If we apply Grummere's criterion (?2 = 11*656854), we find 

 that three prominent centres of " subsidence " were deter- 

 mined by this early ellipsoidal nucleus. For 2¥ 6 -i-»= 5*228, 

 "4 3 being 5*203 ; 2 $ 5 -f-n= 3*548, which is near the outer limit 



of the asteroidalbelt, @ 3 being 3*560 ; (^ 1 -> 1 )-hw=l-022 ; 



the centre of the secondary system being, as above stated, 1*017. 

 The Earth is still in the centre of a " subsidence " ellipsoid, of 

 which the Sun is in one focus, while the outer asteroidal region 

 (3*2028) and y. 3 (5*2028) are at opposite apsidal extremities 

 of the major axis. Moreover 3*2035 is the extremity of an 

 atmospherical radius which would move with the velocity of 

 light, provided the sun's surface were moving with orbital ve- 

 locity, or the velocity of incipient dissociation (s/gr). 

 * Smithsonian Contributions, xlv. p. 232. 



Phil. Mag. S. 5. Vol. 6. No. 35. Aug. 1878. K 



