544 Resistance of Electrolytes at High Frequencies. 



§11. These solutions were of such high resistance that it was 

 necessary to use a container of what would be rather an 

 unsuitable design for high frequency work — particularly as 

 the solutions were such poor conductors. The electrolyte 

 was contained in a shallow copper vessel with a flat bottom 

 (8 cms. diameter), which formed one electrode. The other 

 electrode (copper disk 6 cms. diam.) was suitably supported 

 from an accurately fitting wooden cover, so that it whs -J cm. 

 above the bottom electrode *. A galvanometer circuit, as 

 described by Gilmour (loc. cit.) was used for the determina- 

 tion of the direct current resistance. 



Fiff. 7. 



800 



400 



Concentration 



Having prepared a series of solutions 'covering the range 

 of concentrations where anomalies occur, the container just 

 described was filled in turn with each of them and observa- 

 tions taken, first with it inserted in the D.C. circuit and 

 immediately afterwards in the H.F. circuit. Curves I. and 

 II. (fig. 7) show the results so obtained. In Curve I., which 

 refers to the D.C. experiment, the ordinates are proportional 

 to the resistance plus a constant. 



§ 12. The two curves closely resemble one another, but are 



* The vessel had appreciable capacity due to the size and proximity of 



the electrodes. 



