the Carbon Cell. 



183 



The values of the E.M.F. of the cell are derived from 

 those of A by dividing with 2F, i. e. 46220. 

 The following numbers are those obtained : — 



°c. 



E.M.F. (in 



volts). 



327 

 427 



1-096-0-059 

 1-068-0-069 



loo- P **° 



Pr 2 'PoI 



55 55 



527 



1-039-0-079 



55 55 



627 



1-010-0-089 





Taking with Haber and Brunei*, 



Ph 2 o = 0-031, 

 P* 2 = 0-969, 

 Po, 



0-2. 



it follows — 



log 



Pk.o 



= -1-1455 



PH 2 0P0] 



so there is obtained for the E.M.F. 



° C. E.M.F. (in volts), 



327 1-164* 



427 1-14: 



527 1-129 



627 1-11 2 



These figures are plotted in the accompanying diagram. 



I3f 



Ml 



■zd 



::- 



l 













- i 



-- 





°^-X-. _ 





^^*T 



^~T^ 







x£ 



—c 



xperVms. 



iLS(HABER& 

 UCULfiTED , 



S/fWf/P.) 





-~J 





~, 



T£MF 300' 



400* 



::j ; 



600* 



* No stress is laid on the absolute value of the third decimal place ; 

 as it has a relative value, however, the last figure is given here und 

 subsequently in smaller type. 



