414 DETERMINATION OF THE FREEZING-POINT DEPRESSION 
The following table gives al) the data together with the 
values of k and J thus obtained. The values of the ionization 
coefficients given were taken directly from the second of Dr. 
MacGregor’s papers referred to above. The letters 7 and e 
which follow the coefficients indicate as to whether the values 
were obtained by interpolation or extrapolation. While the 
letters A, B, D and W refer to the observers Archibald, Barnes, 
Dezuisne and Whetham. 
