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236 DENTAL MEDICINE.

antidote is magnesia or chalk, or solution of soap, and mucilagi-
nous drinks freely administered.
Medical Properties and Physiological Action.—It is a powerful
escharotic, and when applied to living tissue, the parts first be-
come white, and subsequently assumes a brownish-black color.
It is not used internally, on account of its corrosive action. It
is considered to be one of the most effective caustics in the bites
of rabid animals.
Diluted Sulphuric Acid.— Acidum Sulphuricum Dilutum.
Derivation.— It is prepared by diluting sulphuric acid f^vij
with distilled water f^lxxvij, and when the mixture has cooled to
60°, by adding more water Slxxxiiiss. Sp, gr., 1.094.
Medical Properties and Action.—It is refrigerant, astringent and
tonic. It is employed as a refrigerant in fevers ; as an astringent
for arresting hemorrhage and passive mucous discharges, and as a
tonic to improve digestion. As it is very injurious to the teeth,
the proper precautions should be observed, as in the case of all
acids administered as medicines—such as alkaline gargles used
before as well as after their introduction in the mouth, and the
use of a glass tube or quill.
Therapeutic Uses.—Diluted sulphuric acid is employed as an
internal remedy in hemorrhage from the lungs, bowels and
uterus, in calculous affections, certain skin diseases, diarrhoea,
profuse perspiration of phthisis, in the advanced stages of typhus
and typhoid fevers, scarlatina, lead poisoning, etc. Externally
as a gargle and wash to ulcers.
Dose.—Of diluted sulphuric acid, Ktlv to TTLxx, three times a
day, in water.
Aromatic Sulphuric Acid.— Acidum Sulphuricum Aromati-
cum— Elixir of Vitriol.
Derivation.—Aromatic sulphuric acid is prepared by mixing
sulphuric acid f.^iij, with rectified spirit Oij, and adding cinna-
mon .^ij, and ginger .Si^^. It is a reddish-brown liquid, with an
aromatic odor and a pleasant taste.
Medical Properties and Action.— It is tonic and astringent, and
is the most agreeable form of sulphuric acid for internal use.
Therapeutic Uses.-—Aromatic sulphuric acid is employed as a