8 Gustaf W, Elmen 



ditions. This, however, did not give any difference in values 

 obtained for B^ 



There is a great similarity between B, the constant of electric 

 polarization in CS2, as determined by means of double-refrac- 

 tion, and /A, the permeability, as determined by means of mag- 

 netic induction, and this suggests that possibly the double-re- 

 fraction in liquids under electric strain is due to a state of 

 polarization analogous in nature to that which takes place in a 

 magnetic substance when in a state of polarization. 



Table I 

 /=47 cm. a=.2545 cm. 



^It might be suggested that the readings of the voltmeter do not give the 

 true drop in potential within the liquid owing to a possible polarization at 

 the electrodes, analogous to that within electrolytes, which, at the low poten- 

 tials used, might make itself evident. This could be determined by varying 

 the distance of the electrodes and comparing the observations for the same 

 drop of potential. This conclusion does not seem to be borne out by the 

 data in tables 2 and 3 where a=.2545 cm. and .184 cm. respectively. 



8 



