400 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 54 



minations fall into several series, representing different samples of ma- 

 terial, but they are given here as one series: 



Mean, 28.517, ±: .0009 



Hence Te= 127.53. If Br = 79.96, Te = 127.60, in accord with the 

 SOo ratio. 



Baker and Bennett furthermore report a few analyses of tellurium 

 tetrachloride which gave values for Te ranging from 127.58 to 127.64, 

 but without weights or details. These determinations, therefore, are 

 unavailable for discussion here. 



In the determinations by Marckwald ' telluric acid was the starting 

 point. This compound was reduced to TeOo by heating, as in several 

 former investigations, with the following results : 



1 Ber. Deutsch. chem. Ges., 40, 4730. 1907. 

 News, 97, 209. 



For a oiitioisni of Marckw.ald by Baker, s-e Chein 



