INORGANIC DEVOLUTION. 221 



7. zeta-Tauri. 



Predominant. Hydrogen, helium, proto-magnesium, aster- 



ium. 

 Fainter. Proto-calcium, silicon, nitrogen, carbon, 



oxygen, proto-iron, proto-titanium. 



8. beta-Crucis. 



Predominant. Hydrogen, helium, asterium, oxygen, nitro- 

 gen, carbon. 



Fainter. Proto-magnesium, proto-calcium, proto-sili- 

 con, unknown, silicon. 



9. Alnitam. 



Predominant. Hydrogen, helium, proto-silicon, unknown 



substance. 

 Fainter. Asterium, proto-hydrogen, proto-magne- 



sium, proto-calcium, oxygen, nitrogen, 



carbon. 



10. Argo. 



Predominant. Hydrogen and proto-hydrogen. 

 Fainter. Helium, unknown substance, proto-magne- 

 sium, proto-calcium, asterium. 



A comparison will show that Group 1 of this table cor- 

 responds in chemical constitution with Group 10 of the 

 other, Group 6 with Group 5, Group 8 with Group 3. The 

 bottom of this stellar table is the top of the other. The 

 hottest stars of the Argonian type are the culminating point 

 of a star's growth in temperature and simplicity. They are 

 also the point of departure in the star's decay in tem- 

 perature and growth in complexity. The course of a star's 

 history is a curve. 



We thus see that the magnificent inorganic evolution 

 which we described in the foregoing chapter is by no means 

 the final expression of the working of the universe. It is 



