AQUEOUS SOLUTIONS. MCKAY. 



333 



In the case of solutions of from 0.3 to 0.5 gramme-equivalent 

 per litre, which can be measured in the first cell, under the most 

 favorable circumstances, the combined error of conductivity and 

 analysis may amount to about 0.3 per cent. In the case of 

 normal solutions it may reach 0.6 per cent, and in the case of very 

 dilute solutions 0.6 per cent also. Hence, except in the case of 

 the first solution of the above table and one other, the differ- 

 ences of the last column are all within the limits of experi- 

 mental error. Also, the number of positive differences is about 

 the same as the number of negative, and except that in the 

 three strongest solutions they are all negative, and in the 



