Chase.] 421 [Oct. 6, 



Arithmetical. Geometrical. 



Group. Sa. Sj. H, G. Ci. C.. C3. S^. S,. H. G. Ci. Cj. C.. 



Monat. .237 .232 .215 .195 .171 .205 .215 .201 .209 .Oa") .116 .114 .109 .085 



3 and 5. .218 .225 .142 .090 .096 .186 .082 .186 .1.S5 .093 .065 .06.5 .102 .039 



2 and 4. .288 .221 .214 .144 .145 .137 .lSf7 .219 .165 .124 .050 .048 .046 .046 



Metal. .268 .209 .225 .246 .2^0 .227 .127 .22;j .200 .148 .222 .185 .l-Si .068 



Periss. .229 .228 .182 .150 .137 .172 .155 .194 .183 .088 .090 .089 .106 .060 



Artiad. .276 .245 .220 .207 .203 .192 .131 .234 .186 .138 .125 .110 .097 .0.59 



Aggreg. .261 .210 .209 .189 .183 .186 .139 .237 .185 .120 .112 .103 .099 .059 



274. Some Consequences of the Identity of Luminous and Gravitating 

 Oscillation . 



The fethereal particles, which are repelled from Sun's equator by the 

 centrifugal force of rotation, "subside " spirally towards the poles, giving 

 rise to Amperian currents which account for Maxwell's identification of 

 luminous and electromagnetic waves and yielding a mechanical equiva- 

 lent of 76,000,000 J for every pound of subsiding matter; the axial 

 core of the spirals is the rod of the virtual solar pendulum (Note 162) of 

 which the length and the radius of torsion are both determined by the solar 

 modulus of light ; the continual succession of spiral impulsions substitutes 

 uniform rotation for reciprocal oscillation ; the precise accordance between 

 the time of rotary oscillation and the time of acquiring or losing the 

 velocity of luminous projection, shows the equally precise agreement be- 

 tween centrifugal sethereal action and centripetal gravitating reaction; the 

 combination of axial rotation with orbital revolution produces continual 

 shiftings of inertial resistance which must be followed by continual re- 

 newals of asthereal disturbance ; the perpetual maintenance of luminous 

 oscillation by influx, as well as by an equivalent eflilux, removes "the re- 

 proach of Thermodynamics." 



Such are a few of the obvious considerations which are suggested by 

 the identity of luminous and gravitating oscillatory velocity at the centre 

 of the solar system. In subjecting them to the tests of mathematical , 

 analysis, the eqtlilibrating tendencies of centrifugal and centripetal action 

 should be studied with especial .reference to three oblate spheroids, all of 

 which have the same poles as the Sun. Their equatorial loci are respec- 

 tively coincident with Laplace's limit (36.35r„), the virtual radius of 

 solar torsion (OSS.OorJ, and the solar modulus of light (474657r„). 



375. Consideration of Some Objections. 



Professor Geo. Fras. FitzGerald {Nature, xxvi, 80) presents four ques- 

 tions in the way of objection to the hypothesis of the conservation of solar 

 energy by an average influx which is exactly equivalent to the average 

 efllux. Tlie reply of Dr. Siemens may be supplemented by gome addi- 

 tional considerations. " 1. How the interplanetary gases near the Sun 

 acquire a suflicient radial velocity to prevent their becoming a dense atmos- 

 phere around him?" The proportionality of centrifugal" force to mass 

 would combine with the tendencies of gaseous diffusion and with the in- 



