ATOMIC WEIGHTS 



307 



Addendum. Since the manuscript of the vohime went to the printer 

 the determinations made b}' Prandtl and Bleyer ' have been published. 

 They made two series of analyses of vanadium oxychloride, as was done 

 gravimetrically by Eoscoe. The data, with vacuum weights, are as 

 follows : 



/. 



Hence ¥ = 51.175. 



II. 



Mean, 40.359, ± .0080 



Mean, 40.314, ± .0043 



Hence V = 50.977. 



These series, combined with Eoscoe's similar series, give a general 

 mean of 3AgCl: YOCL :: 100: 40.3245, ±.0037. Hence V = 51.027,± 

 .0160. Combining this with the value from Eoscoe's oxide series, the 

 final, general mean becomes A^=: 51. 037, ±.0036. 



1 Zeitsch. anorg. Cheni., 65, 152. 1900. 



