452 



CAROLINE W. BALDWIN. 



[Vol. III. 



Bar in VI C J do ride. 



When barium is present, the arc has a large round center, which 

 shades from rose pink through lemon yellow to lime green at the 

 edge. Next to each carbon it is of a brilliant lemon yellow color. 

 The carbons are not very highly heated. 



The barium lines come out easily, and are very strong ; but the 

 bands and all but the strongest lines in the original spectrum arc 

 so weak that they are almost invisible. 



