of Frozen Electrolytes at very Low Temperatures. 385 



VIII. Dielectric Constant of Sodic Chloride (NaCl). 



(23' 6 per cent, (cryohodrate) solution.) 



Corrected galvanometer deflection when the condenser had air as- 

 dielectric = 3*44 cm. for 100 volts. 





Mean 





Temperature 



galvanometer 





in platinum 



deflection 



Dielectric Charging 



degrees. 



in centimetres. 



constant* volts. Observations. 



-2031 



9-77 



2-78 99-20 90,000 ohms in series 



-200-0 



9-74 



2-62 92-20 for the first two 



-192-0 



10-20 



2-90 99-20 readings, then 1000 



-177-0 



12-85 



3-68 99-20 ohms. 



-165-2 



16-45 



4-73 99-20 The condenser was 



-156-5 



4-05 



5*88 19*80 warmed up out of 



-122-7 



18-60 



27-40 19-80 the vacuum tube. 



-108-3 



2-25 



156-00 ? 1-43 



IX. Dielectric Constant of Sodic Chlorate (NaC10 4 ). 





(10 per cent, solution.) 



Corrected galvanometer deflection when the condenser had air as 





dielectric 



= 4-13 cm. for 100 volts. 





Mean 





Temperature 



galvanometer 





in platinum 



deflection 



Dielectric 



degrees. 



in centimetres. 



constant. Observations. 



-202-4 



5-65 



6'68 Condenser charged to 20'2 volts. 



-189-8 



6-10 



7-22 



-173-7 



6-35 



7-51 



-156-0 



8-05 



9-57 



-114-3 



3-55 



59-20 Condenser charged to T434 volts. 



-98-0 



5-45 



91-20 



X. Dielectric Constant of Normal Sodic Sulphate (Na 2 S0 4 ). 





(10 per cent, solution.) 



Corrected galvanometer deflection when the condenser had air as 





dielectric 



= 4-13 cm., for 100 volts. 





Mean 





Temperature 



galvanometer 



Dielectric 



in platinum 



deflection 



degrees. 



in centimetres. 



constant. Observations. 



-197-0 



4-75 



5*68 Condenser charged to 20*0 volts. 



-167-3 



5-05 



6-04 



-129-8 



7-15 



8-58 



-116-6 



8-35 



10-00 



-85-8 



8-95 



10-70 



-69-0 



9-65 



11-60 



