OP ARTS AND SCIENCES. 



33 



the amount of argentic bromide formed were determined in the same 

 experiment ; but this was not always practicable. 



As can easily be calculated according to the mean of the first series 

 of determinations, 1.0000 gramme of bromide of cadmium gives 1.3808 

 grammes of argentic bromide, and according to the mean of the second 

 series 1.0000 gramme of bromide of cadmium requires for complete 

 precipitation 0.7932 gramme of silver. Hence, as a mean of these 

 experiments, 0.7932 gramme of silver yields 1.3808 grammes of argen- 

 tic bromide and therefore corresponds to 0.5876 gramme of bromine. 

 Moreover, since 



0.7932 : 0.5876 = 108.000 : 80.006, 



