321 



Reduced to vacuum, 50.351 



In a second series of experiments, palladium was purified as in the 

 eariier investigation, but with special care to eliminate riiodium, iron, 

 copper, gold, mercury, etc. The palladiammoniura salt prepared from 

 this material gave as follows : 



Mean, 50.371, ± .0026 

 Reduced to vacuum, 50.352 



Here, again, no loss from decrepitation or volatilization occurred, 

 although evidence of such loss was carefully sought for. The data thus 

 obtained may now be combined with the previous series, thus : 



Reiser, first series 50.360, dr .0008 



Reiser, second series 50.359, ± .0028 



Bailey and Lamb 50. 1 7 1 , ± .0099 



Reller and Smith, electrolytic 50.508, ± .0014 



Reller and Smith, hydrogen series 50.388, zb .0043 



Reiser and Breed, first series 50.351, ± .0023 



Reiser and Breed, second serie-^ 50.352, ± .0026 



General mean 50.388, zh .00062 



For palladium, ignoring the work of Quintus Icilius, the subjoined 

 ratios are now available : 



(I.) 2RCI : Pd : : 100 : 70.S65, ± .0150 

 (2.) Per cent. Pd in Pd(NH3CI)2, 50.388, ±: .00062 

 (3.) 2AgCl : Pd(NH3Ci).^ : : 100 : 73.807, ± .0742 

 (4.) Pd(NM3Cl)2 : PdS : : 100 : 65.651, dr .0051 



The antecedent data are — 



CI = 35.179, ± .0048 S = 31.828, jr .0015 



K = 38.817, d= .005 1 AgCl = 142.287, ± .0037 



N = 13-935. ± .^021 



21 



