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DENTAL MEDICINE.
226
An Internal Astringent for Dental For an Astringent Gargle or Lotion.
Hemorrhage.
„ . R ^ . Pulvens gallse . . . ? ss
Otto Arnold. ^ ^.
U. Acidi gallici ^j. ^ '
Aquae cinnamon . . ij. M. SiGNA.—As a gargle or lotion in in-
. . J
SiGNA.—A teaspoonful every hour un- flamed or ulcerated condition of
til bleeding is arrested. mucous membrane and gums.
ACIDUM HYDROBROMICUM—HYDROBROMIC ACID.
Formula.—H Br.
Derivation.—Diluted Hydrobromic Acid is prepared by adding
ten per cent, of absolute hydrobromic acid to ninety per cent, of
water. It is a clear, colorless liquid, having no odor, but a de-
cidedly acid taste and an acid reaction.
Medical Properties and Therapeutic Uses.—Hydrobromic acid is
often substituted for the bromides on account of its possessing
many of their properties. It is employed in cerebral disorders
from overexertion, epilepsy, spasmodic cough, angina pectoris,
affections of the heart, as it diminishes its action, to relieve the
symptoms of quinine, and also of morphine, migraine or sick
headache, neuralgia, spasmodic asthma, etc.
Dose.—TTLxx to .5ij.
Dental Uses.—Diluted Hydrobromic Acid may be employed in
facial neuralgia, infantile convulsions due to teething, and to
lessen the irritability of the fauces when impressions for obturators
and artificial palates are being taken.

ACIDUM HVDROCHLORICUM—HYDROCHLORIC ACID.
MURIATIC ACID ACIDUM MURIATICUM.
Formula.—HCl. Sp. gr., 1.16.
Derivation.— Hydrochloric or Muriatic Acid is obtained by the
action of sulphuric acid on a solution of chloride of sodium or
common salt. When pure, it is a transparent, colorless liquid,
but when contaminated with chlorine, iron and other substances,
it has a yellow color. It emits a dense, white vapor, with a
pungent odor and a corrosive taste, being an active poison. The
antidote is magnesia or soap.
Medical Properties and Action.—The strong acid is a powerful
caustic and escharotic also disinfectant and fumigant, but in-
;