86 



RESEARCHES UPON ATOMIC WEIGHTS. 



Series IV. sAgCl: AgsAsOj. 



Series V. 3AgCl: AgsAsO^. 



Series VI. 3AgBr: Ag3As04. 



Corrected 

 weight of 

 AggAsOi 



in 

 vacuum. 



gm. 

 4.96261 



5-31743 

 4.46882 

 4.16702 



Weight 



of 

 AgBr in 

 vacuum. 



gm. 

 6.04438 

 6.47645 

 5-44273 

 5-07533 



Weight 



of 



asbestos. 



gm. 

 0.00004 

 0.00015 

 0.00026 

 0.000 10 



Dissolved 



AgBr 



from 



filtrate. 



gm. 

 0.00010 

 0.00009 

 o.oooii 

 0.00004 



Loss 



on 



fusion. 



gm. 

 0.00012 

 O.OOOII 

 O.OOOIO 



0.00008 



Corrected 



weight of 



AgBr 



in 



vacuum. 



gm. 

 6.04440 

 6.47658 

 5-44300 

 5-07S39 



Ratio 



3 AgBr: 



AgsAsOi. 



1. 217988 

 1. 217991 

 1. 217995 

 1. 217990 



Average 1.217991 



Per cent of Ag in^AgsAsOi 69.9678 



Average per cent of Ag in Ag3As04 69.9680 



The first point to be noted in the foregoing tables is that the results can be 

 divided into two distinct groups according to the samples of arsenate employed, 

 Series I, II, and III, with Samples A to E, giving values for the per cent of 

 silver in the arsenate lower than Series IV, V, and VI, with Samples F and G. 



