260 
SELECTED ARTICLES. 
Mercury, 
Oxygen, 
Ammonia, 
Water and loss, 
83.90 
6.63 
4.07 
5.40 
Convinced that this water was a constituent of tlie ammo- 
niuret, I decomposed 12.38 grains in a small retort, furnished 
with a tube containing caustic potassa to absorb the water. 
The weight of the tube was increased 0.67; and the mercury 
sublimed in the neck of the retort, weighed 10.35. We have 
thus the following composition per cent.: — 
The gases are oxygen and ammonia, the former combined 
with mercury as peroxide of that metal, which gives. — 
Mercury, 
Water, 
Loss and gas. 
83.62 
5.39 
10.99 
Mercury, 
Oxygen, 
Ammonia, 
Water, 
83.62 
6.60 
4.30 
5,39, 
