THE ANALYSIS Or CADMIUM CHLORIDE. 1 7 



The average of these results is almost identical with that obtained in the 

 first two series of analyses, 1 12.417, hence it is evident that no serious error 

 was introduced in our earlier work by the use of phosphorus pentoxide 

 for drying hydrochloric-acid gas. 



The results of this investigation may be svmimarized as follows: 



1. In the analysis of cadmiimi chloride, both gravimetrically by determina- 

 tion of the chlorine as silver chloride and volumetrically by comparison with 

 silver, the atomic weight of cadmium is found to be 112.418 referred to silver 

 107.880, or 112.408 if silver has the atomic weight 107.870. 



2. Phosphorus pentoxide is found to be attacked by pure hydrochloric-acid 

 gas, and hence is unsuited for drjdng this gas, thus confirming the results of 

 Bailey and Fowler. 



3. It is shown that no appreciable error is introduced from this source, if a dry 

 salt is fused in a current of hydrochloric acid which has been dried by phospho- 

 rus pentoxide. 



