RESISTANCES. 



753 



Sulphate of Zinc at 10 (Ewing and MacGregor). 



Nitric Acid (density = i '36). 



Temperature. 



2 



4 

 8 



12 



Specific 

 Resistance. 



174 

 I -8 3 

 I-6 5 



Temperature. 

 .16 

 20 

 24 

 28 



Specific 

 Resistance. 



I'39 

 I- 3 

 I'22 

 1-28 



Solution of Chloride of Potassium. 



M. Boutyf has determined, with particular care, the resistance 

 of solutions of chloride of potassium, which might be used as 

 standards in comparative experiments. Putting R = R(i+a/), we 

 have, between o and 30: 



* These values are considerably higher than those of M. Kohlrausch. 

 + BOUTY. Comptes rendus, Vol. en., p. 1097. 1886. 

 VOL. II. CCC 



