4:14: 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 54 



From Weeren's figures alone Mn = 54.994. 



The determinations by Baxter and Hines ' were based upon analyses 

 of manganese bromide and chloride, both fused in order to eliminate 

 moisture. The usual Harvard methods were employed, giving two 

 ratios for each salt. With vacuum weights the data obtained were as 

 follows, lirst with the l)r(Mnide: 



MnBr^. 

 5.58416 

 5.63432 

 6.53738 

 4.81005 

 4.88097 

 5.G3219 

 6.52626 

 5.79924 

 3.59809 

 5.16334 

 3.92226 

 4.49158 

 3.60071 

 4.77392 

 3.57660 

 5.69972 



AgBr. 

 9.76561 

 9.85345 

 11.43300 

 8.41206 

 8.53642 

 9.85008 

 11.41293 

 10.14206 

 6.29271 

 9.02959 

 6.85968 

 7.85571 

 6.29740 

 8.34915 

 6.25569 

 9.96840 



From Ag ratio, Mn = 54.926. 

 From AgBr ratio, Mn = 54.925. 

 And Ag : Br : : 100 : 74.083. 



Secondly, for the chloride series : 



From Ag ratio, Mn = 54.928. 

 From AgCl ratio, Mn = 54.928. 

 And Ag: CI:: 100: 32.869. 



.Tdurn. Arner. Chein. Soc, 28, 1560. 1906. 



