BY MIXTURES OF ELECTROLYTES BARNES. 161 



The calculated values in this Table will have a greater pos- 

 sible error than those in Table V, due to the greater number of 

 experimental data required. In the observed values the possible 

 error is the same as before. Considering the many sources of 

 error in both these values the above agreement between them is 

 very satisfactory. 



Conclusions. 



The above results show that in the case of mixtures of solu- 

 tions of potassium chloride and sodium chloride, and of sodium 

 chloride and hydrochloric acid, and of all three, it is possible, 

 with the ionization coefficients obtained by the method referred 

 to above, and on the assumption that the molecular depression 

 of an electrolyte in a mixture is the same as it would be in a 

 simple solution of the same total concentration, to predict the 

 depression of the freezing-point within the limit of the error 

 involved in observation and calculation. 



PBOC. & TRANS. N. S. INST. Sci., VOL. X. TRANS. X. 



