BARIUM. 



59 



1.6625 grm. BaCl2 = 



2.4987 



3-4468 



4.0S22 " 



4.2062 " 



4.4564 



8.6975 



Scn'c's B. 



1.727 grm. Ag, 



2.5946 



3-579 



4-2395 



4-3683 



4.629 



9.031 



Ratio, 96.265 

 96.304 

 95.306 

 96.290 

 96.289 

 96.271 

 96.307 



.0043 



Mean, 96.3382, 



.0096 



We have now eight series of experiments upon this ratio, 

 representing thirty distinct estimations. Combining, we get 

 a general mean as follows : 



Pelouze 96.4573, ±: 



Marignac, A 96.3543, zb 



B 96.3540,4; 



C 96.3605, i 



D 96.3670, ± 



Dumas, A 96.3325, d= 



" B 96.2902, it 



" C 96.3382, ± 



General mean 96.3596, 



0036 



0033 

 0013 

 0017 

 0057 

 0068 

 0043 

 0096 



0009 



The ratio between silver and crj^stallized barium chloride 

 has also been fixed by Marignac* The usual method was 

 employed, and two series of experiments were made ; in the 

 second of which the water of crystallization was determined 

 previous to the estimation. Five grammes of chloride were 

 taken in each determination. The following quantities of 

 BaCl2.2H.,0 correspond to 100 parts of silver : 



* Journ. f. Prakt. Chem., 74, 212. 1858. 



