Fig. 8. 

 A«id Solution of Nitrobenzene. 



Abscissae: Difference of Potential between Standard Electrode and Cathode. 

 Ordinates: Tir 



— 









— 



1 









"*" t- 



















-4 











i 1 Platinised Platinurr! 











— § 111] 



\ v Cathode, i = l 85| 











-»i X\- 











_ " \N 











" - -* Tv 











^ \X 











f 3 











i a 











J 4 











-4 











i 











a\ 











4\ 











i V 











5 X 











v 4 











\ -i 











^ o 











V 











4 































i 











± 











Acid Solution of Nitrobenzene. 



Abscissae: Difference of Potential between Standard Electrode and Cathode. 



Ordinates: Time. 



Fig. 10. 

 Curves to show change in Platinum Cathode brought about by use. 

 Abscissae: Difference of Potential between Standard Electrode and Cathode. 

 Ordinates: Time. 



Fig. II. 

 Alkaline Solutions of Nitrobenzene. 



Abscissae: Difference of Potential between Standard Electrode and Cathode. 

 Ordinates: Time. 





- V 



















\ 



















--T5 



















vt 



















\\ 

















"• 



-* t* 



















-Xt 



Copper Cathode, 







10 minutes. 



- \X 



j= 



1 32 



). 













- aa 

















,. 



- Vi-V 



















_y x 



















-=, \ 



















- L_X 









\ 











- Xt v 



















3 



















V ^\ 









\ 











: >~i ^ 

















- \V 





^ 













- 4 x - 







\ 











_ 3 









J 











. K 









l 











x 













































1 



















1 



























































































































\ 







< 





























\ 









































y 





























o 







< i 



































> 





























!, 









repea 

































\ 























10 





jtes. 



\ 







\ 































^=1-329. 



> 































T 





s 





























1 



















\ 



































\ 





c 































\ 



































\ 



\ 



































\ 



































\ 



































^ 



\ 





































































< i 

















































































































































































































































































































T 









1. Copp 



i- Cathode, -V86. 



















\ 





























.P> 







*l 



v 









































\ 









































\ 





II. Coppe 



Cathode. i = 



V329, 























\ 







































\ 





\ 











































?L 





\ 









^Copper 



O.itho.h 



' 



184 







<4 



























1 













































— ©- 





— "O 









-^ 































































"< 



r" 



% 









































i 

























— p 

























































































Pla 





i Oathod 



e, 1 = 



1329. 





























































































" 











"N> 1 1 . . t , 



urn 



Callni.1. 



' 



184 

























































Om 

































































































































































































































































































