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ANTIFERBRIN. 191

As a mechanical styptic, in a finely-powdered form, in super-
ficial hemorrhages, such as from leech bites, etc.
Combined with borax, it is a useful application for inflamed
mucous membrane.
Prof. Bonafoux, of the Academy of Medicine, Paris, recom-
mends a powder composed of equal parts of gum arabic, colo-
phony and carbon, as possessing great hemostatic powers, and
capable of arresting the bleeding of large arteries.
DENTAL FORMULA.
For Inflamed Mucous Surfaces.
U Pulveris acacia 2; ij
Sodii boratis gij
Fiat pulvis.
SiG.—Apply to inflamed part.

h.QY.i:K^\\AV>—PHEXYL-ACETAMIDE (ANTIFEBRIN).
Formula.—Q^^O or CgH^N (C2H30)H.
Derivation.—Acetanilide is a derivative of aniline, made by
adding an excess of glacial acetic acid to pure colorless analine.
It is in the form of a white crystalline powder of neutral reaction,
without odor or disagreeable taste, slightly pungent, producing a
burning sensation when applied to the tongue. It resembles
" mother of pearl " when evaporated by heat, in thq form of large
scales. It is but slightly soluble in cold water, but freely soluble
in ether, chloroform and alcoholic solutions. It is not altered by
acids or alkalies. The pure drug should be white or of a faint
rose-tint, and should form a colorless liquid and completely vola-
tilize when heated upon a platinum surface. Water of a tem-
perature of 105° F. will dissolve one part of it to fifty of the
water ; alcohol, from 3 to 5 parts, and ether and chloroform in
larger proportions.
Medical Properties and Physiological Action.—Acetanilide is an-
tipyretic, diuretic, antiperiodic and anodyne, and in ordinary doses
its action is less marked on healthy persons than when fever is
present, as its most apparent action is to reduce temperature by
converting oxyhemoglobin into methemoglobin in the red blood-
corpuscles interfering with oxidation. When an excessive quan-