CHAPTER VII.

Analysis continued. No contingent of heat could be imparted to any planet by the parent nebula 126 Only one degree of heat added to the nebula from the beginning till it had contracted to the density of 1/274th of an atmosphere 127 Increase in temperature from 0° to possible average of 274° when condensed to 4,150,000 miles in diameter 127 Time when the sun could begin to act as sustainer of life and light anywhere. Temperature of space 128 The ether devised as carrier of light, heat, etc. What effect it might have on the nebula 129 First measure of its density, as far as we know 130 The estimate _too_ high. May be many times less 133 Return to the solar nebula at 63,232,000 miles in diameter 134 Plausible reason for the position of Neptune not conforming to Bode's Law. The ring being very wide had separated into two rings 134 Bode's law reversed. Ideas suggested by it 135 Rates of acceleration of revolution from one planet to another 137 Little possibility of there being a planet in the position assigned to Vulcan 138 Densities of planets compared. Seem to point to differences in the mass of matter abandoned by the nebula at different periods 138 Giving rise to the continuous sheet of matter separating into different masses. Probably the rings had to arrive at a certain stage of density before contracting circumferentially 139 Possible average temperature of the sun at the present day. Central heat probably very much greater 140 Churning of matter going on in the interior of the sun, caused by unequal rotation between the equator and the poles 140