Constants oj Electrolytic Solutions. 845 



data for similar acids and bases indicates that the con- 

 ductivity at infinite dilution should lie between 30 and 40. 



It has already been pointed out that the agreement above 

 referred to is an indication of the absence of anomalous 

 absorption or dielectric polarization. 



Some attempts were made to calculate the correction 

 factors in difficult cases by using Kohlrausch's data, but 

 uncertainty as to which of the observations was to be 

 considered faulty rendered the attempt fruitless. 



The ratios of the dielectric constants of the solutions 

 investigated to that of water have been plotted against 

 concentration (in grm. equiv. per li.) in ti"'. 7. The rela- 

 tionship appears to be linear and practically independent 

 of the nature of the salt. 



Fig. 7. 



ti-o 



I 



o 



SO 



.Q 

 o 



ox' 



^ 





X.KCL 

 o.CuSOj. . 



C I0 H 7 





\ 



^ 



Sj 













"S. 



002 -004- -006 



Normality of Solution. 



008 



•OIO 



VIII. 



The Dielectric Constant of Water is independent of the 

 Frequency between Wave-lengths of 17 and 52 metres. 



A receiving circuit was made up, consisting of (i.) an 

 inductance L, which could be varied to suit the frequency 

 employed but which was kept constant during each series 

 of observations, (ii.) a variable condenser C, (in.) a small 

 inductance coupled with the detector D, and (iv.) a fixed 

 air condenser C a . The latter could be replaced by one 



Phil. Mag. S. 6. Vol. 41. No. 246. June 1921. 3 K 



