318 Profs. J. A. Fleming and J. Dewar. On the Dielectric 



Dielectric Constants of Pure Ice. 

 Frequency of contact maker 120. 

 Mean 



Temperature galvanometer Dielectric 



in platinum 



deflection 



constant 



degrees. 



in centimetres. 



of ice. 



-206-0 



9-45 



243 



— 199-8 



9-40 



2-42 



—197-2 



9-39 



2-42 



—183-7 



939 



2-42 



-1750 



9-46 



2-43 



—164-3 



10-05 



2-59 



—156-0 



11-42 



2-96 



—1490 



132 



343 



—144-7 



2-97 



3-94 



-1360 



3-76 



5-02 



-128-0 



4-45 



5-95 



-120-0 



5-50 



7'38 



-1140 



7-15 



9-60 



-1110 



8 08 



10-8 



-1062 



10-3 



13-9 



—97-8 



1465 



19-8 



-937 



17-3 



234 



-89-4 



20-5 



27-6 



-87-2 



1-55 



29-0 



-82-3 



1-80 



33-5 



—77-7 



2-0 



373 



—72-4 



2-24 



41-8 



-63-8 



2-57 



46-8 



—54-8 



2-99 



55-8 



—49-0 



3-05 



57-2 



-392 



3-14 



58-9 



-352 



313 



58-5? 



-27-2 



316 



59-2 



-24*5 



3-15 



59-1 



-22-5 



3-15 



59-1 



-21-0 



3-28 



61-3 



-17-8 



3-28 



61-3? 



-150 



3-50 



65-4 ? 



-10-2 



3-63 



67-8? 



-7-5 



2-78 



70-8? 



Observations. 

 Charging voltage 100" 7 volts. 



Charging voltage 19*8 volts. 



Charging voltage 1*434 volts. 



In the case of the last four observations the discharge and charge 

 currents of the condenser were no longer quite equal, thus showing 

 that conductivity had begun to have influence prejudicial to the 

 accuracy of the measurements of the dielectric constant. 



