ATOMIC WEIGHTS 



147 



For the silver chloride ratio Richards and Willard give the following 



data : 



Preliminary Series. 



AgCl. Ratio. 



13.59125 29.5774 



21.39635 29.5770 



30.41341 29.5797 



15.78111 29.5812 



18.35734 29.5812 



17.26504 29.5815 



19.40375 29.5819 



18.32417 29.5805 



17.63280 29.5797 



22.20617 29.5817 



16.37121 29.5805 



LiCl. 

 4.01994 

 6.32840 

 8.99620 

 4.66824 

 5.43032 

 5.10725 

 5.74000 

 5.42038 

 5.21573 

 6.56925 

 4.84268 



Mean, 29.5802, ± .00033 



Hence Li = 6.9414. 



Hence Li = 6.9391. 



Mean, 29.5786, ± .00014 



Combining the several series for this ratio we have- 

 Mallet 29.581, ±.0087 



Troost 29.5925, ±.0145 



Richards and Willard 1 29.5802, ± .00033 



Richards and Willard 2 29.5786, ± .00014 



General mean 29.5789, ± .00013 



The older work, with its high probable errors 



vanishes. 



