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SELECTED ARTICLES. 
arseniuretted hydrogen, on the contrary, but an insignificant 
black precipitate falls down, and the greater part of the arsenic 
may be found in the solution. 
6. A solution of bromine likewise completely decomposes 
the antimoniuretted hydrogen; the solution becomes troubled 
without being discolored and deposits white flocculi, retaining 
no antimony in solution. With arseniuretted hydrogen it 
does not form a precipitate, all the arsenic remaining in the 
solution. 
7. A solution of sulphuretted hydrogen has no action upon 
these gases, even after the addition of a certain quantity of 
potassa. 
8. A solution of corrosive sublimate completely absorbs 
antimoniuretted hydrogen, becomes troubled, and deposits a 
precipitate, which is at first white, and afterwards becomes 
gray. Arseniuretted hydrogen gives a yellow precipitate, 
which becomes brown, and afterwards black; all the mercury 
is precipitated, and the solution contains arsenious acid. 
9. Both gases decompose a solution of nitrate of silver, 
giving rise to a precipitate which, with arseniuretted hydro- 
gen, is pure silver, all the arsenic remaining in the solution, 
whilst with the antimoniuretted hydrogen, all the antimony 
is thrown down with the silver, none of it remaining in 
solution. 
10. Solutions of acetate of lead, sulphate of zinc, and pro- 
tochloride of iron have no action upon these gases. 
11. The solution of sulphate of copper exercises but a feeble 
decomposing action upon these gases, forming some black 
flocculi. 
12. The solution of platinum is promptly colored black 
by these gases. A black precipitate is formed, composed 
either of antimony and platinum, or of arsenic and platinum. 
13. These two gases have no action upon each other. 
14. If sulphuret of arsenic is added to a mixture of zinc 
and diluted sulphuric acid, arseniuretted hydrogen is disen- 
gaged; likewise, if kermes be added to the mixture, a certain 
quantity of antimoniuretted hydrogen is evolved. 
