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CRESYLIC ACID. 223
for its application. It is also useful in ulceration and recession
of the gums, beginning the treatment with a weak solution, and
gradually increasing the strength. It is sometimes combined with
glycerine, in which case the latter must be added to the acid drop
by drop, in order to avoid explosion. As an obtundent it is use-
ful in the strength of a solution i in 40, for relieving the pain of
psoriasis and syphilitic affections of the tongue.
DENTAL FORMULA.
For Secondary Syphilitic Ulcers, and Ulceration of Mucous
Membrane of Mouth and Tongue.
Acidi chromici gi".x
li .
Aquae Jj. M.
SiGNA.— Paint the diseased parts 3 or 4 times a day, with a cam-
el's-hair brush dipped in the solution.
CRESOL—CRESYLIC ACID—ACIDUM CRESYLICUM.
Formula.—Q,Yif:>=Z^Y{l(ZW.^.OYi.
Cresylic Acid is an antiseptic and germicide upon the different
kinds of pathogenic organisms. It is a colorless liquid having
the odor of creasote. It boils at 203°, and is slightly caustic.
It is soluble in water, quite soluble in alcohol, glycerine, and water
of ammonia, and very soluble in both of the latter. When injected
into rabbits it produced toxic symptoms, but to cause death a
dose four times greater than that of carbolic acid was required.
It has a marked effect in retarding the fermentation of urine and
milk. Experiments on cultures of the various pathogenic micro-
organisms demonstrated that cresylic acid is a powerful antisep-
tic and germicide, and quicker in its action than carbolic acid or
its congeners.
ACIDUM GALLICUM—GALLIC ACID.
Formula.— C^ HgO-
Derivation.— Gallic Acid is obtained from galls by exposing
the powder, in water, to the action of the air, at a temperature
of between 60° and 70° F., when the acid is deposited in the
form of small, silky, almost colorless crystals, possessing a slightly
CRESYLIC ACID. 223
for its application. It is also useful in ulceration and recession
of the gums, beginning the treatment with a weak solution, and
gradually increasing the strength. It is sometimes combined with
glycerine, in which case the latter must be added to the acid drop
by drop, in order to avoid explosion. As an obtundent it is use-
ful in the strength of a solution i in 40, for relieving the pain of
psoriasis and syphilitic affections of the tongue.
DENTAL FORMULA.
For Secondary Syphilitic Ulcers, and Ulceration of Mucous
Membrane of Mouth and Tongue.
Acidi chromici gi".x
li .
Aquae Jj. M.
SiGNA.— Paint the diseased parts 3 or 4 times a day, with a cam-
el's-hair brush dipped in the solution.
CRESOL—CRESYLIC ACID—ACIDUM CRESYLICUM.
Formula.—Q,Yif:>=Z^Y{l(ZW.^.OYi.
Cresylic Acid is an antiseptic and germicide upon the different
kinds of pathogenic organisms. It is a colorless liquid having
the odor of creasote. It boils at 203°, and is slightly caustic.
It is soluble in water, quite soluble in alcohol, glycerine, and water
of ammonia, and very soluble in both of the latter. When injected
into rabbits it produced toxic symptoms, but to cause death a
dose four times greater than that of carbolic acid was required.
It has a marked effect in retarding the fermentation of urine and
milk. Experiments on cultures of the various pathogenic micro-
organisms demonstrated that cresylic acid is a powerful antisep-
tic and germicide, and quicker in its action than carbolic acid or
its congeners.
ACIDUM GALLICUM—GALLIC ACID.
Formula.— C^ HgO-
Derivation.— Gallic Acid is obtained from galls by exposing
the powder, in water, to the action of the air, at a temperature
of between 60° and 70° F., when the acid is deposited in the
form of small, silky, almost colorless crystals, possessing a slightly
