ATOMIC WEIGHTS 245 



Secondly, the ratio 2Ag : CdCL was measured by adding to the solution 

 of the cadmium salt as nearly as possible its exact equivalent of a standard 

 silver solution, and then determining the slight excess of silver or chlorine 

 bv titration. The results are as follows : 



A year later, the same ratios were remeasured by Baxter, Hines and 

 Frevert." I subjoin their data : 



These series are so nearly identical and so short that it seems well 

 to treat both investigations as one. On this basis. 3Ag: CdClj : : 100 : 

 84.9677, ±.0008, and 2AgCl: CdCL :: 100: 63.9523, ±.0004. 



Hence, from the Ag ratio, Cd = 112.41, 



From the AgCl ratio, Cd = 112.42. 



And Ag: CI:: 100: 32.861. 



Combined with the values found by former investigators, the ratios 

 assume the following form : 



Silver Ratio. 



Dumas 84.843, ± .0260 



Baxter, etc 84.9677, ± .0008 



General mean 84.9676, ± .0008 



Silver Chloride Ratio. 



Bucher 63.916, ± .0032 



Baxter, etc 63.9523, ± .0004 



General mean 63.9518, ± .0004 



Baxter, Hines and Frevert also made analyses of cadmium bromide 

 by the usual Harvard methods. Their data follow : 



' Journ. Amer. Chem. Soc, 28, 770. 19C6. 



