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SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 54 



Haas * analyzed palladiammonium bromide, Pd(iS[Tl3Br)2, by reduction 

 in hydrogen. The reduced metal was subsequently heated in carbon 

 dioxide. His data, with vacuum weights, are as follows: 



Mean, 35.492, ± .0006 



Hence Pd = 106.69. 



Kemmerer ^ analyzed two palladiammonium compounds, the chloride 

 and the cyanide, both by reduction in hydrogen, with subsequent cooling 

 of the reduced metal in an atmosphere of nitrogen. Vacuum weights 

 are given throughout. With the chloride, two sets of determinations 

 were made, on two distinct preparations, but both series are here treated 

 as one. The data are subjoined : 



.0018 



Hence Pd = 106.39. 



With the cyanide, Pd(]S[H3C]S^)o, Kemmerer obtained the following 

 results : 



Cyanide. Pd. 



.85860 .47463 



1.19378 .66002 



1.41818 .78408 



1.05254 .58206 



1.39510 .77153 



1.06196 .91881 



.0025 



^ Inaug. Dissertation, Erlangen, 190S. 

 '^ Thesis, University of Pennsylvania, 190S. 



