26 UNIVERSAL EVOLUTION 



the evolution of worlds proceeds, are not lost. They 

 hit upon either the nebulae, or the bodies evolved from 

 them. While our sun radiates 2260 million times more 

 heat than the earth receives, yet the excess finds 

 places in the cosmieal phenomena for its utilization. 

 Every ray of light from any star will eventually be 

 transformed by some other body. Life could not exist, 

 and phenomena could not occur without the constant 

 radiations from a hot body to the colder surroundings 

 of space. A homogeneous and equilibrated condi- 

 tion of all, or any of the substance, or energy, 

 is incompatible with this theory. But the rhythm of the 

 production of nebulae by collisions, and the evolution of 

 bodies from these, in the manner above mentioned, are 

 the only tenable statements that can now be made. It 

 is necessary to notice still further the planetesimal theory 

 It seems that the prevalent form of nebulae is the spiral, 

 and that these give a spectrum not of the bright lines of 

 incandescent hydrogen, helium and nebulium, but one 

 that is continuous. This means, that the matter here is 

 of a low temperature, and in a liquid, or solid form, con- 

 ceived to be in a solid form, finely .divided, and is im- 

 mensely spread out. The prevalence of the spiral form 

 of these nebulae, with two arms thrown out on opposite 

 sides, is significant of a process of world evolution. It is 

 a scientific inference, by Mr. Chamberlain, that they are 

 thus nascent solar systems, and that each one of them 

 will become a sun, planets and attendant moons, such as 

 is now our system. Any one who examines an illustra- 

 tion of a photograph of one of these spiral nebulae will 

 see a very large central nebula, knots upon the arms, 

 and surrounding the whole, finely divided matter. The 

 theory supposes that this attenuated matter will con- 

 dense upon the large nucleus and form a central sun, 



