.382 



It would be noticed from the column headed "Remarks" that in 

 no case have ionic velocities differed by more than 0.3, as obtained 

 from diffei'ent sources. 



Below, is added a comparative table of the ionic velocities as 

 obtained by this direct method, and as obtained from Kohj,r.\i'sch's 

 table') l\y calculating with his temperature coefficients: 



1) Loo. cit. 



