300 Messrs. Wright and Thompson on the Determination of 



1. Electro-cadmium Plates. — Probable error of each value 

 less than + *5 millivolt. 









Value of n. 







Value of on. 













4-95 



3-205 



201 



102 



•46 



•235 



6-10 



60 



142 



195 



24-7 



299 



342 



4-95 





8-2 



135 



187 



239 



28-2 



3-205 







5-3 



10-5 



15-7 



20-0 



2-01 









5-2 



10-4 



147 



1-02 











5-2 



95 



•46 













4-3 



2. Bright Cadmium Plates. — Probable error less than ±*75 

 millivolt. 



Value of m. 



Value of n. 



4-95 



3-205 



201 



102 



•46. 



•235. 



6-10 

 4-95 

 3205 

 201 

 102 

 •46 J 



4-9 



137 



8-8 



18-5 

 13-6 



4-8 



23-0 



181 



9-3 



4-5 



27-4 



22-5 



13-7 



8-9 



4-4 



305 

 25-6 

 16-8 

 120 

 75 

 3-1 



3. Amalgamated Cadmium. — Surface wet with fluid amal- 

 gam. Probable error not exceeding +*75 millivolt. 





w=2-01. 



rc=102. 



w=-235. 



w=610 



=201 



= 102 



206 



263 



5-7 



359 



15-3 



9-6 



4. Amalgamated Cadmium. — Surface not fluid, but crys- 

 talline. Probable error not exceeding + 1*5 millivolt. 





0=201. 



w = 102. 



rc=-235. 



™=6-10 

 = 201 

 = 1-02 



145 

 



19-6 

 5-1 



24-5 



100 



4-9 



The following tables are obtained from the above values 

 by interpolation, as in the above observations with zinc and 

 copper sulphates: — 



