CELESTIAL DISSOCIATION. 



203 



Fig. 51, according to the same authority, shows the dif- 

 ferent rates of motion registered by different and adjacent 

 iron lines in the sun. 



I 



THE CASE OF MAGNESIUM. 



The difference between the flame spectrum of magnesium 

 and the spark spectrum is marked. Some of the flame lines 

 disappear altogether, and two new lines make their appear- 



