of Frozen Electrolytes at very Low Temperatures. 389 



XVIII. Dielectric Constant of Potassium Alum . 

 (9 per cent, solution.) 

 Corrected galvanometer deflection when condenser had air as dielec- 



Observations. 





trie = 



Q'l 9 OTV1 



o cm. 





IVEean 





Temperature 



galvanometer 



Dielectric 



in platinum 



deflection 



degrees. 



in centimetres. 



constant. 





1Z oo 



o oo 



— loo o 



it OU 



cr. to 

 O O J 



— lol O 



A -OK 



/ UU 



— loy 5 



O Lo 



1 A.Oi"i 

 1U ZU 



— lol / 



/ oU 



1 Q.QA 



— 151 t 



10 4U 



1/ OO 



-1428 



13-10 



21-70 



-1327 



1630 



27-10 



-130-3 



1-25 



27-80 



- 123-5 



1-62 



36-00 



-105-7 



2-90 



64-70 ? 



-66-8 



323 



72-20? 



XIX. Dielectric Constant of Hydrojpotassic Sulphide (KHS). 

 (5 per cent, solution.) 



Corrected galvanometer deflection when condenser had air as dielec- 

 tric = 3-44 cm. for 100 volts. 

 Mean 



Temperature galvanometer 

 in platinum deflection 

 degrees. in centimetres. 



-199-8 

 -199-9 

 -197-7 

 -197-2 



10-14 

 10-15 

 10-15 

 10-47 



Dielectric 

 constant. 



2-86 

 2-86 

 2-86 

 2-95 



Observations. 

 Condenser charged with 100 volts. 

 1,000 ohms in series with galvano- 

 meter. 



XX. Dielectric Constant of Molybdate of Ammonia. 

 (10 per cent, solution.) 

 Corrected galvanometer deflection when the condenser had air as 



Temperature 

 in platinum 

 degrees. 



-202-0 



-150-2 



-119-4 



-88-5 



VOL. LXI. 



dielectric = 4'15 cm. for 100 volts. 



Mean 

 galvanometer 

 deflection 

 in centimetres. 



12-55 



4- 95 



5- 50 

 5-80 



Dielectric 

 constant. 



2-94 

 82-80 

 90-40 

 96-40 



Observations. 

 Condenser charged to 98' 7 volts. 

 Condenser charged to 1'434 volts. 



2 E 



