146 



WORK OF M. R. SCHMIDT. 



than the conductivities of cobalt chloride, as we should expect. The results in the 

 mixtures are represented in figs. 66, 67, and 68, and are in every respect like those 

 obtained for the other two salts. The conductivities are less than the average 

 in each case. 



50 75 100 



Per cent. Glycerol 

 Fig. 65. Conductivity of Cobalt Chloride in Glycerol-Methyl Alcohol at 25 e 



TEMPERATURE COEFFICIENTS OF CONDUCTIVITY. 



The most interesting features in this connection are the very large temperature 

 coefficients of conductivity of the solutions in pure glycerol. In tenth-normal solution 

 these are for lithium bromide, cobalt chloride, and potassium iodide, respectively, 

 10.6 per cent, 10.23 per cent, and 10.87 per cent between 25 and 35, and 8.71 per 

 cent, 8.36 per cent, and 8.44 per cent between 35 and 45. These are much the 

 largest temperature coefficients of conductivity thus far observed between these tempera- 

 tures, and they are closely related to the temperature coefficients of fluidity. 



