Chemical Substances at different Stellar Temperatures, 399 



i 1 



55 



a ft a 



o o 

 > g 



ISP 



m 20 

 3> O 

 ? 2 



Unknown. 



Proto- hydrogen 



Asterium. 



Helium 



Proto-magnesium. 



Hydrogen. 



Profo-calcium. 



Unknown. 



Unknown. 



Oxygen. 



Nitrogen. 



Carbon. 



Sitaium. 



Proto-iron. 



ProTo-fitanium. 



Proto- copper 



Proto- manganese 



Proto-nickel. 



ProTo -chromium 



ProTo- vanadium. 



ProTo-sTronTlum. 



Iron. 



Calcium, 

 anese 



The behaviour of the most typical line of each chemical substance is 

 indicated by a double line looped at the top at its highest range. The 

 length and varying thickness of the lines in stars on both sides of the 

 temperature curve are derived from the observed appearance and 

 intensity of the lines, noted in the different stars. 



