228 Experiments on the Oxygenated 
at all changed. It was put into a bottle with a ground 
stopper and tube, to which an apparatus was ad- 
apted to receive any gas that might come over; but 
no gas whatever was disengaged. 
EXPERIMENT IV. 
Sixty grains of the salt were fused, by the heat 
of a lamp, in a bottle with a ground stopper and 
tube. After having been kept in a fluid state for 
about half. an hour, I found that it had lost two 
grains in’ weight, and that a small quantity of air 
was given out, which proved to be oxygenous, by 
the test of nitrous gas. The salt which had been 
melted would still detonate with sulphur, &c. The 
loss of weight was, I am inclined to think, chiefly 
owing to the escape of the water of crystallization; 
for the salt, when cool, had lost its transparency. 
EXPERIMENT V. 
From forty grains of the salt in an earthen retort, 
I procured, by the application of heat, about thirty- 
six cubic inches of oxygenous gas; the evolution 
of which was very rapid and commenced as soon as 
the retort became slightly red. Forty grains, ex- 
posed in a crucible to a strong red heat, appeared, 
from the mean of two experiments, to have lost 
about seventeen grains in weight: the remaining 
muriat, being afterwards thrown into the sulphuric 
acid, produced a very strong smell of oxygenated 
EROS x At 
Swe Peis 
