IN THE SOLID AND LIQUID PHASES. JOHNSTONE. 



203 



reading was made. In this manner values of the resistance at 

 temperatures ranging from -80 to -47C were obtained. 

 Above -46C the resistance was such that it was impossible to 

 use the electrometer as a current measurer, so it was replaced 

 by a D'Arsonval galvanometer. This instrument had a 

 sensitivity of 3.52 x 10 9 amperes for one scale division and a 

 resistance of 1900 ohms at room temperature. As the specific 

 resistance of sample 2 varies from 9.92 x 10 12 (a/ -80C to 

 2.67 x 10 7 @ 4- 24C. it is impracticable to plot these values by 

 the direct method, so in curve No. 2, the logarithms of the 

 specific resistance are shown plotted with the temperatures. 



9 /o 



L.OG. or SPCC/F/C 



// 



As the thermocouple indicates the temperature ^ of the oil 

 bath, the actual value of the temp, of the acetic acid, corres- 



