296 



THE ATOMIC WEIGHTS. 



taken in each experiment. The data ohtained were as follows ; the last 

 column giving the weight of hydrogen, computed from its volume, 

 yielded by 100 parts of cobalt or nickel : 



Nickel. 



.0009 



The weight of the hydrogen in these determinations was doubtless 

 computed from Regnault's data concerning the density of that gas. Cor- 

 recting by the new value for the weight of a litre of hydrogen, .089872 

 gramme, the ratios become: 



For nickel 3.421 1, =b .0010 



For cobalt 3-4II2, ± .0009 



Some time after the publication of Russell's first paper, but before the 

 appearance of his second, some other investigations were made known. 



