140 THE ELECTRICAL RESISTANCE AND 



In the following table column I gives the time at which the 

 readings were taken; column II the readings of the electro- 

 scope, when the gold leaf was connected with each one of the 

 potential electrodes, c and c l ] column III, the time taken for 

 the electrometer needle to pass over 100 scale divisions; 

 column IV, the temperature of the water bath in Fig. 7, the 

 reading of the galanometer, and the calculated temperature 

 of the ice; column V, the electromotive force used in the 

 experiment; column VI, the capacity of the system; column 

 VII, the calculated resistance and column VIII, the specific 

 resistance of the ice. In the experiments performed, readings 

 were taken as the temperature of the ice decreased to the 

 minimum temperature for the particular salt and ice mixture 

 in the outer vessel, and then as the temperature rose up to zero. 



