426 



PROCEEDINGS OP THE AMERICAN ACADEMY. 



The results obtained at 140° over a wide range of concentration are 

 given in Series 3, 4, 5, 6, 7, and 8. All the values in these series, 

 together with all but the first three points of Series 2 (140°) are plotted 

 in Figure 3 and give a view of the values of M over a wide range of 



TABLE IV. 



concentration. The points in the right hand portion of the curve, al- 

 though few in number, were determined with more accuracy than any of 

 the others. It is to be noted that for concentrations above 13, the 

 specific conductivity is nearly constant. 



The temperature coefficient of the conductivity, which in the case of 



