Constants of Pure lee, #<?., at Low Temperatures. 327 



6.0 



t\ 











5.0 



* i 

 1 IS 



V 



V 





£ IS! 



A 



A / 







CO 



| 4.0, 



'/ 

 * / 



* 1 A v 



«? / / j 







H 

 (/) 

 Z 

 U 



° S.O : 











O 



K a" 





ETHYLENE DI-> 







O °"~ 



y 2.0 





ItlTRO-BENZOL. 





UJ 

 Q 



I.O 













TEMPERA 



TURE IN F 



i 



'LATINUM 



1 



DECREES. 



- - - ' 



-200 -150 -tOO° -50° O 



FlG. 2. — Curves showing the variation of dielectric constant of ethylene dibromide 

 and nitro-benzol with temperature. 



The dielectric constant of the mononitro-benzol value falls on 

 solidifying at 3° C. from the high value of 32 to a low value of 

 between 3 and 4 somewhat rapidly, and ultimately reaches 261 at 

 -185° C. 



In the case of these non-electrolytes, nitro-benzol and ethylene 

 dibromide, the electrical resistance remains practically constant and 

 exceedingly high during the rise of temperature from —200° upwards, 

 being thus in contrast with the behaviour of the frozen electrolytes 

 which, as shown, rise up very rapidly in conductivity at a certain 

 temperature. 



It should also be noted with regard to glycerine that other 



