398 



THE CHEMISTRY OF THE SUN. 



[OHAP 



The results obtained when only two experiments with the same 

 metal under different conditions have been made are as follows : 



Lines seen with Lines seen in 



metal alone arc shielded by 



in crucible. hydrogen. 



Sodium . . . 2 . . . 4 



Potassium . ... 4 . .. ' . . . 11 



Rubidium . . . 3 . ."" . . 4 



Strontium . . . 3 . ... 6 



Chromium . . . , . . '-..- 13 



Shielded by 

 ferro-cyanide. 

 , ' ." * . 2 



Shielded by 



magnesium. 



6 



Lead . , 

 Manganese . 



