88 KANSAS UNIVERSITY QUARTERLY, 
value of e=17x10—”, given by Budde, the value of m comes out 
13.0x10—" grams, 
In conclusion it seems to the writers that their results justify 
them in stating that the broadening of the spectral lines of sodium 
is directly proportional to the strength of the magnetic field, and 
that the broadening of the line for unit field is 11.47 10-6 Ang- 
str6m units. 
It is proposed to continue this work, extending its scope to im 
clude other substances, under various conditions. 
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