﻿Conductivity of Sulphated Accumulator Flutes. 745 



V = RC 



AR + &' 



where 



A-i(i+2). ^=e(— +*?) 



£*V _ 6 : ^R 



"<5 "(Att + i) 8 7/7 



2 -(-^ 2 V), if ^=-PY, 



(AR + /,) 2 ' v oft 



= -fv(l*-AV)». 



mi 



&2£_ 1 _ 1 



b l -AY AV 



e ' 



Integrating, and putting V = Y when t = Q, we obt 



v i-av 



1-AV - V 

 or, with a new constant B, 



V-= 



m _i_ 



, -D 6 + 1-AV 

 A + JD6 



This equation is found to fit the curves of fig. 2 with 

 considerable accuracy. Specimen curves plotted from it are 

 given by the broken lines of the diagram. 



In the case of constant current through the cell, we hav< 



^ = _py^_PCR, 

 at 



R=R <r^. 



This corresponds to the curves of fig. 3. 



Finally, if we assume that the tinal resistance of the cell 

 is always the same, since 



dt - k x • 



R — R T = _K-^ Y</7 = constant. 



Yalues of this integral can be obtained by computing 

 the areas under the curves of tig. 3, and, a> shown by the 



