146 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 54 



Mean, 39.8456, ± .00023 



The two series combined give a general mean of 39. 8457, ±.00023. 

 Hence LiCl = 42.393, and Li = 6.9346. 



The two other ratios determined by Eichards and Willard are those 

 between lithium chloride, silver chloride and silver. With vacuum 

 weights, their data, first for the ratio Ag:LiCl are these: 



Mean, 39.3023, ± .00048 



Hence Li = 6.9409. 



Mean, 39.2992, 



Hence Li = 6.9300. 



Combining the figures for this ratio we have — 



Stas 39.358, ± .0011 



Richards and Willard 1 39.3023, ± .00048 



Richards and Willard 2 39.2992, ± .00014 



General mean 39.3002, ± .00013 



.00014 



The iiKitcrial used in the pielimin.Try series contained a trace of sodimii. 



