370 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 54 



Mean, 58.4868, ± .0007 



Hence W = 184.11. 



The syntheses of WO3 by Smith and Exner give W = 181.007, ±.0079. 

 If we substitute that value in the hexchloride ratio we can compute an 

 independent figure for the atomic weight of chh^rine, namely, 01 = 35.451, 

 ±.0028. This figure is good, and furnishes additional corroboration of 

 Smith and Exner's determinations. 



Smith and Exner also made a series of determinations of Taylor's 

 ratio between WO3 and CO.. Their figures, with the ratio added, are 

 as follows : 



