Tl IK CONSTITUTION OF THE ELECTRIC SPARK. 

 TABLE III. 



205 



Magnesium. In photographs taken on a stationary film we note the complete 

 IMOaoe of the triple line in the green, which forms a prominent feature of the 

 magnesium spectrum under ordinary conditions. The whole energy of the spectrum 

 sivins to be concentrated into the line at 4481 (a), which is exceptionally strong, and 

 into the triplet beginning with 3838'4 (), which appears as a doublet in our films, the 

 t\\<> last lines probably not being resolved. A strong line seen both in arc and 



