The stomach-pump should not
be used. If the breathing is impeded, tracheotomy may be necessary.
Injuries of external parts by the acid must be treated as burns.
X.--SULPHURIC ACID
=Sulphuric Acid=, or oil of vitriol, may be concentrated or diluted. It
is frequently thrown over the person to disfigure the features or
destroy the clothes. Parts of the body touched by it are stained, first
white, and then dark brown or black. The presence of corrosion of the
mouth is as important as the chemical tests. Black woollen cloths are
turned to a dirty brown, the edges of the spots becoming red in a few
days, due to the dilution of the acid from the absorption of moisture;
the stains remain damp for long, owing to the hygroscopic property of
the acid.
_Method of Extraction from the Stomach._--The contents of the stomach or
vomited matter should, if necessary, be diluted with pure distilled
water and filtered. The stomach should be cut up into small pieces and
boiled for some time in water. The solution, filtered and concentrated,
is now ready for testing. Blood, milk, etc., may be separated by
dialysis, and the fluid so obtained tested.
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