Chase. | : 702 [June 21, 
definite eethereal atmosphere, the density of that atmosphere in a condens- 
ing nucleus, should vary as But according to Graham’s law, » « 
\ ee . Therefore, in order to satisfy the conditions of gravity, the sthe- 
real elasticity, within any nucleus which is either wholly or almost wholly 
gaseous, & —_ 
Since such is the supposed character of the solar nucleus, it seems not 
unlikely that the centrifugal radiations of any heavenly 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 per- 
petual internal oscillations as the ether 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 para- 
bolic orbital velocities, find a common limit in the velocity of light, may 
perhaps be regarded 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 WV, (60.939) and 2 4, (41.- 
358), and the Sun being in the focus. The v/s vivw of condensation would 
give velocities of incipient orbital separation at YW; (30.470) and 4, (20.679), 
+} 
and 2/, would then be in the centre of the entire system (30.470—20.679 
+ 2— 4.885; 2/, — 4.886), even as @, is nearly in the centre of the sec- 
ondary system (o'; + 3, + 2= 1.017). 
If we apply Gummere’s criterion (7 = 11.656854), we find that three 
prominent centres of ‘subsidence ’’ were determined by this early ellipsoid- 
al nucleus. For 2 VU, + nm = 5.228, 2/, being 5.2083; 2 6, + n= 
3.548, which is near the outer limit of the asteroidal belt, (0), being 3.560 ; 
(Y,— 4,1) + m= 1.022, 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 
(8.2028) and 2/, (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 velocity, or the velocity of incipient dissociation ()/ gr): 
It seems probable that in consequence of subsidence, Jupiter, which, as 
we have already seen, was the centre of nucleal volume, may have been also 
the centre of nucleal mass, at the time of its complete orbital separation and 
that it was, therefore, the primitive Sun of the extra-asteroidal planets, 
before it became our Sun's ‘‘ companion-star.’’ For with the present mass of 
“Smithsonian Contributions, 232, xiv. 
