of Antimony in the Atmosphere. 465 
ous when once attention is called to them, that it is entirely 
unnecessary to confirm our previous observations except so far 
as to add the following quantitative determinations, which will 
serve to give an accurate idea of the extent of the action under 
the only conditions we have investigated, or in regard to which 
in their weight. This method is fully described in our original 
paper, and is based not only on the reducing power of the metal, 
but also on the fact repeatedly observed, that after the reduc- 
tion was complete, the smallest excess of the finely pulverized 
metal would not dissolve even after prolonged boiling, and in 
the presence of a large excess of acid, if only the solution was 
protected from oxidation. 
r 
After the reduction was ended, the solution was transfer- 
red to a flat-bottomed flask through a platinum tunnel, on 
‘which the bullets were retained, and after washing into the 
flask the last traces of the solution with as small an amount of 
ing several hours of each clear day. 
We give in the following table the weight of antimony dis- 
solved from the bullets after each successive exposure to the 
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