ATOMIC WEIGHTS 



243 



Mean, 61.244, ± .0010 



Hence Cd = 112.07. 



The results for the bromide, simiUirly stated, are these 



Mean, 41.203, ± .0010 



Hence Cd = 112.01. 



The direct comparison of cadmium and silver was effected by the 

 simultaneous electrolysis, in the same current, of double cyanide solu- 

 tions. Silver was thrown down in one platinum dish and cadmium in 

 another. The process was not altogether satisfactory, and gave diver- 

 gent results, those which are cited below having been selected by Hardin 

 from the mass of data obtained. I have added in a third column the 

 cadmium proportional to 100 parts of silver: 



Mean, 51.876, ±: .0041 



Hence Cd = 111.93. 



