ISOLATION OP AN ION MILLIKAN. 251 



[The author then determines the value of the correcting term — 



a' 

 and confirms his result by reference to independent work of other 



observers. For these discussions the reader should consult the origi- 

 nal article.] 



THE ABSOLUTE VALUE OE 6. 



Taking the value of A as 0.817 the value of e was determined 

 from (9), and the values of e lf a, and I obtained as explained above. 



