ATOMIC WEIGHTS 32' 



Hence, 



From ratio 6 Sb = 118.678, ± .2844 



"11 119.786, ± .1621 



" 9 119.850, ± .0047 



"10 119.858, ± .0451 



"15 120.345, ±: .0086 



" 1 120.444, ± .0108 



"14 : 120.612, ± .0182 



"13 121.210, ± .0386 



" 3 121.240, ± .0777 



" 7 121.830, ± .0680 



" 4 122.078, ± .0100 



"12 122.272, ± .0075 



" 5 122.333, ± .0898 



" 2 122.462, ± .0550 



" 8 122.527, ± .0345 



General mean, Sb = 120.684, ±: .0031 



This mean has obviously very little significance except in so far as 

 it shows the relatively low weight attaching to the higher values. The 

 latter, say all over 131, are almost certainly in error, and ought to be 

 rejected. Taking only the seven lowest values, they give a general mean 

 of Sb = 120.048, ±.0038. Even this figure, however, is not quite satis- 

 factory, for the values derived from ratios 1 and 15, which seem to be 

 good, are not adequately accounted for. It is highly desirable that more 

 work should be done upon the atomic weight of antimonj^, by modern 

 methods, and for the purpose, in part at least, of explaining some of the 

 evident discrepancies which appear in the foregoing table. 



