318 ON THE CALCULATION OF THE CONDUCTIVITY OF 



These results show that in the case of solutions containing 

 equi-molecular quantities of Zinc and Copper Sulphate up to 1 

 gramme-equivalent per litre, the calculated and observed values 

 of the conductivity agree within the limits of observational 

 error. 



Observations on Solutions Containing Sodium and 

 Potassium Sulphate. 



Table VI contains the results of calculations and observations 

 on some mixtures of equal volumes of equi-molecular solutions 

 of Sodium and Potassium Sulphates, of the same range of con- 

 centration as those of the Copper-Potassium Sulphate solutions 

 and Zinc-Copper mixtures examined. The data for the drawing 

 of the ionic concentration-dilution curve for Potassium Sulphate 



TABLE VI. 



