Triple Chlorides Containing Silver and Gold. 479 





Calculated for Calculated for Bayer 's 

 black triple salt, dark red double salt, analysis Calculated 

 A B with for 

 Cs 2 AgAuCl 6 Cs 5 Au 3 Cl 14 highest silver 0.8A -4- 0.2B 



Cs, 



33.90 



37.90 



34.1 



34.7 



Ag, 



13.77 



.... 



10.9 



11.0 



Au, 



25.17 



33.77 



27.6 



26.9 



ci, 



27.16 



A 



28.33 



27.6 



A 



27.4 



A 





Another Calculated 

 analysis for 0.73A 

 by Bayer 4-0.27B 



Another 

 analysis 

 by Bayer 



^ ( 



Calculated Another 

 for 0.6A analysis 

 -f 0.4B by Bayer 



Calculated 



for 0.54A 



+0.46B 



Cs, 



34.9 35.0 



34.6 



35.50 35.0 



35.74 



Ag, 



9.92 10.0 



8.27 



8.26 7.47 



7.44 



An, 



28.0 27.5 



29.3 



28.61 29.6 



29.13 



ci, 



27.72 27.5 



27.74 



27.63 27.85 



27.70 





Another Calculated 

 analysis for 0.5 A 

 by Bayer +0.5B 



Another 

 analysis 

 by Bayer 



Calculated Analysis by 

 for 0.4A Bayer with 

 -J-0.6B least silver 



Calulated 

 for 0.28A 

 +0.72B 



Cs, 



35,3 35.9 



35.4 



36.30 35.7 



36.78 



Ag, 



6.99 6.9 



5.55 



5.51 3.90 



3.86 



An, 



29.9 29.5 



31.1 



30.33 32.2 



31.36 



ci, 



27.8 27.7 



28.05 



32.2 27.23 



28.00 



Such calculations have been made for all of Bayer's 

 14 analyses, but only half of them are given here. These 

 have not been chosen on account of giving* better agree- 

 ments than the others, for the results of the comparisons 

 are very uniform, but they have been selected to show 

 the comparisons in connection with variations in the 

 percentages of silver. The agreements of the calculations 

 with the analyses are remarkably good in all cases, as 

 the greatest differences are 1.2% of cesium and 0.84% 

 of gold. 



There seems to be no doubt, therefore, that the two 

 salts under consideration were the chief constituents of 

 Bayer's mixtures. It is to be noticed, however, that in 

 all cases the analyses show less cesium and more gold 

 than the calculated quantities, whereas variations in the 

 opposite directions would be expected on account of con- 

 tamination of the products with mother-liquors rich in 

 cesium chloride. Therefore it is necessary to assume 

 that the products contained a third constituent, in fairly 



