120 MESSRS. A. SMITHKLLS, II. M. DAWSON, AND II. A. WILSON: ELECTRICAL 



Caesium Salts 

 Rubidium 

 Potassium 

 Sodium 

 Lithium 



OOGG 

 0091 

 0144 

 0300 

 08 



When I is below 5 X 10' 7 , then Ik, has nearly the same value for all solutions, 

 viz., lk t = '09. 



It thus appears that both -+ and Ik 2 are nearly of the same value for all solutions, 



provided I is less than 5 X 10~ 7 , so that for dilute solutions ARRHENIUS'S equation 

 C = A/(E) holds good. When, however, I is greater than this, L, Incomes constant, 

 so that Kj increases proportionally to I, and/(E) changes in form. 



This increase in Ik., corresponds to a decrease in the slope of the beginning of the 

 curves, so that as the concentration of the solution is increased, the curves bend over 

 more and more gradually towards the axis of E.M.F. 



In Curve XII the variation of L, with the atomic weight of the metal is shown. 



The points fall nearly on the curve, M^ =7 (M = Atomic Weight) which is 

 drawn. 



Curve XII. 



Variation of k, with Atomic Weight. 



Conductivity of Flames containing Acids. 



Since the majority of acids are decomposed at the temperatures employed in our 

 experiments, our investigation of the effect of acids on the conductivity of the flame 

 was limited to hydrochloric and sulphuric acids. 



