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CARBOLIC ACID. ;
219
that the synthetic acid diminished the life activity of the bacteria
experimented on rather less than the older acid, but that the
difference was so small that the two kinds might be considered
to be practically of the same value. One of the advantages
claimed for synthetic carbolic acid is its greater solubility in
water, thus enabling the operator to use it in greater strength
without diminishing its causticity.
Phenol Sodique (unofficial) is a solution of sodium carbolate, and
extensively employed dental
is in practice. (See Phenate of
Soda.) It is composed of pure melted carbolic acid, 5 parts
solution of caustic soda (of a specific gravity of 1.332), i part;
distilled water, parts. Mix.
5
Carbolate of Camphor is composed of carbolic acid, by weight,
one part, and camphor, by weight, three parts.

DENTAL FORMULA.
A Lotion for Soft and Spotjgy Gums. For Sensitive Dentine and Alveolar
Pvorrhcea.
R . Acidi carbolici . . . gr. xx
Spirit! rectificati (alco- Dr. J. A. Robinson.
hol.) 3ij.
B- Acidi carbolici . . . (cryst.)
Aquae destillatse . . ^ vj. M.
Potassae caustic . aa partes equal.
It renders the gum less tender and
Misce, by triturating in a mortar un-
firmer.
til a crystalline paste is formed.
SiGNA.—Apply on a loosely rolled
An Antiseptic Lotion or Injection. twist of cotton about neck of tooth,
for alveolar pyorrhoea. It is known
B . Acidi carbolici ... ^ ss
as the " Robi7ison Jiemedy."
Glycerini S'^v. M.
For alveolar abscess and ulcers of
mouth. The glycerine modifies the For Alveolar Pyorrhoea (Pings' Dis-
caustic action of the acid. ease) .
Acidi carbolici nxxxv
R . .
A Stimulant and Antiseptic Lotion. Potassae iodidi . gr.v
Zinci chloridi gr.xxv
Dr.
J. Stock EN.
Alcohol absolut ITLxxv
R. Acidi carbolici . . . ^] Aq. destillatae .
Glycerini ?iv 01. menthas pip.
Aquae ^^ x. M. Misce et filtra.
Useful in ulceration of the gums and SiGNA—As an injection in pus-pockets
mucous membrane. of gum.