ATOMIC WEIGHTS 



241 



Hence Cd = 112.315. 



Mean, 63.916, ± .0032 



Bucher gives a rather full discussion of the presumable errors in this 

 method, which, however, he regards as somewhat compensatory. The 

 series is followed by a similar one with cadmium bromide, the latter 

 having been sublimed in vaciio. Eesults as follows : 



Mean, 72.464, ± .0035 



Hence Cd = 112.34. 



In order to fix a minimum value for the atomic weight of cadmium, 

 Bucher effected the synthesis of the sulphate from the metal. 1.15781 

 grammes of cadmium gave 2.14TT() of sulphate. 



Hence Cd = 112.36. 



