ATOMIC WEIGHTS 83 



In his determinations of the atomic weight of titanium, Thorpe gives 

 data from which the subjoined ratios are derived : 



4Ag:TiCli: :100:43.999, ± .0032 

 4AgCl:TiCl4: : 100: 33.118, ± .0019 



Hence Ag : CI :: 100 : 32.855, ± .0093. 



From Eichards' analyses of barinm chloride we have — 



2Ag:BaCL: : 100: 96.525, ± .0010 

 2AgCl : BaCL : : 100 : 72.653, ± .0014 



Hence Ag : CI : : 100 : 32.8575, ± .0029. 



Eatios computed from the analyses of magnesium chloride by Eichards 

 and Parker: 



2Ag:MgCl„: : 100: 44.138, ± .0003 



2AgCl:MgCl„: : 100: 33.226, ± .0013 



Hence Ag : CI : : 100 : 32.842, ± .0054. 



Data for cadmium chloride are given by Baxter and Hines, and also, 

 later, by Baxter, Hines and Frevert. Their series, combined together, 

 give — 



2Ag:CdCL: : 100: 84.9677, ± .0008 

 2AgCl:CdCl,: : 100: 63.9523, ± .0004 



Hence Ag : CI : : 100 : 32.861, ± .0016. 



For sodium chloride the analyses of Eichards and Wells give the fol- 

 lowing ratios : 



Ag:NaCl: : 100: 54.1854, ± .00015 

 AgCl:NaCl: : 100: 40.7797, ± .00028 



Hence Ag : CI : : 100 : 32.873, ± .0010. 



The potassium chloride ratios of Eichards and Staehler are — 



Ag:KCl: : 100: 69.1073, ± .00032 

 AgCI : KCl : : 100 : 52.0118, ± .00025 



Hence Ag : CI : : 100 : 32.869, ± .0009. 



This group of indirect estimates combines as follows: 



Richards and Parker, Mg ratios 32.842, ± .0054 



Thorpe, Ti ratios 32.855, ± .0092 



Richards, Ba ratios 32.8575, ± .0029 



Baxter, Hines and Frevert, Cd ratios 32.861, ± .0016 



Richards and Staehler, K ratios 32.869, ± .0009 



Richards and Wells, Na ratios 32.873, ± .0010 



General mean 32.8684, ± .0006 



