of Frozen Electrolytes at very Low Temperatures. 387 



XIII. Dielectric Constant of Potassium Ferrocyanide. 



(12 per cent, (cryohydrate) solution.) 



Corrected galvanometer deflection when the condenser had air as 

 dielectric = 4*02 cm. for 100 volts. 



Mean 



Temperature galvanometer 

 in platinum deflection Dielectric 

 degrees. in centimetres, constant. Observations. 



— 204-3 2-02 35-1 Condenser charged to 1-434 volts. 

 —2038 2-01 34-9 



-200-0 2-10 36-4 



— 187-2 2-30 39-8 

 —168-1 2-46 42-4 



— 156-5 2-56 44-3 

 -145-8 2-87 49-8 



— 129-5 3-95 68-5 

 —119-4 4-70 81-7 

 -111-4 5-60 97-0 



— 107-0 6-65 115-0 

 -105-3 7-25 126-0 

 -102-0 8-50 147-0 



-98-8 9-60 168-0 ? 



XIV. Dielectric Constant of Potassium Chromate (KCr0 4 ). 



(36 per cent, (cryohydrate) solution.) 



Corrected galvanometer deflection when the condenser had air as 

 dielectric = 4*34 cm. for 100 volts. 



Observations. 

 Condenser charged to 20'0 volts. 





Mean 





Temperature 



galvanometer 





in platinum 



deflection 



Dielectric 



degrees. 



in centimetres. 



constant. 



-201-5 



8-95 



10-2 



-193-7 



9-75 



11-1 



-1770 



10-62 



12-1 



-1650 



10-95 



12-5 



-148-8 



1105 



12-6 ? 



-135-7 



12-20 



14-0 



—127-0 



12-75 



14-6 



-122-0 



13-40 



153 



-112-4 



14-65 



16-9 



-100-0 



1-39 



22-3 



Condenser charged to 1*434 volts. 



