Uses of Chlorides and Chlorine. 131 
ed or destroyed by these and other unwholesome efflavia, much 
sooner than if their apartments are seasoned by the corrective influ- 
ence of chlorine. The gas, however, must be very gently and slow- 
ly liberated, or its effects will be too powerful. The method recom- 
mended is to place in a dish or vessel one part of chloride of lime 
and about thirty parts of water, or an ounce of chloride with a quart 
of water, with such a quantity of worms as will issue from an ounce 
of grains, (eggs.) Stir the materials, and when precipitated, renew 
the water, and repeat the operation two or three times in twenty four 
hours, as necessity requires. Thc chloride is to be changed only as 
it ceases to yield an odor. 
In this operation it appears that the carbonic acid arising from the 
fermenting materials, unites with the lime, and sets the chlorine free, 
which by its avidity for hydrogen, decomposes the miasms which it 
meets with. 
This mode of fumigation does not remove the necessity of fre- 
quently renewing the air of the chambers, and of promoting its cur- 
rents by fires. 
5. In removing from urine and the vessels employed to receive *, 
the disagreeable odor emitted from them. 
It is well known that the odor of urine, (which is at first sida 
and often partakes of the smell of the food, especially after eating as- 
paragus, cauliflowers, peas, &c.) becomes exceedingly repulsive and 
communicates its effects to the vessels employed with it. 
These odors are completely removed by a small portion of chlo- 
rine, Thus, half a gallon of urine which would not.lose all its odor 
by being treated with four ounces of acetic acid, would yield it by 
the addgion of as eight, or at most ten drops of chlorine or chloride 
of lime. 
-If night tables and other utensils of a room which may sei ab- 
sorbed the odor of urine contained in chamber vessels be washed 
with a sponge dipped in a solution, prepared by adding an ounce of 
chloride of lime to a gallon of water, they will be preserved from 
taint. 
6. In destroying the gases which blacken silver and bronze vessels, 
and varnish containing metallic oxides. It has happened that in 
emptying privies and in other analogous operations, the effluvium has 
produced disagreeable effects on furniture and metallic surfaces. 
This may. be completely prevented by suspending cloths soaked in a 
solution of chloride in the aporenent, or placing them in the apertures: 
through which the gas issues. 
