﻿844 Messrs. E. W. B. Gill and F. B. Pidduek on 



sufficient to find a, and in general only these two readings 

 were taken. If more are taken there is verification, but it 

 has not been thought necessary to show this agreement for 

 these cases as in tables I. to V. 



The values of ol are given in the last column, the currents 

 from which they are obtained being in the same row. 



Fio-. 2. 



0. 120 



160 



200 — x 



Fig. 3. 







a S X 



The values of - and — are plotted against — in figs. 2 

 p p r ° p 



and 3, and it will be seen that the points lie on a continuous 



• a S 



curve, proving that the functional relations between. —,'.-, 

 X P V 



and — are satisfied. 

 V 



