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Preface to Seventh Edition.

In presenting the Seventh Edition of the " Dental Medicine,"
the author entertains the hope that his labors have resulted in
such an improvement of this work as to render the present edi-
tion more valuable than the one that preceded it.
The success which has attended the issue of the different
editions has been very gratifying, and its popularity has been
shown by the short time which has elapsed between them.
The number of opportunities thus offered to revise its editions
have been taken advantage of to increase its usefulness as a text-
book for dental students, and also as a reference book for dental
practitioners.
The advance of Dental Materia Medica and Therapeutics has
been such as to render it necessary to increase the size of this
work in every revision, in order that it may fulfil the object of
its preparation ; hence, among the remedial agents, and combina-
tions of such agents which have been added to the present edi-
tion are the following : Vapocaine, Chloretone, Enzymol, Eu-
formal, Phenalgin, Airol, Actol, Glucide, Glutol, Orthoform,
Caffein, Digitalis, Sozoiodol, Liquid Air, Nitrous Oxide and
Oxygen, Nitrous Oxide and Atmospheric Air, Pressure Anaes-
thesia by compressed Air, Sulpho-Carbolate of Zinc, Silver Sul-
pho-Carbolate, Anestile, The Treatment of Dental Caries with
Nitrate of Silver, The Hypodermic Syringe, etc., etc. A new
Table of Doses of Medicinal Agents has been substituted for the
one in former editions.
Important additions have been made to manv articles such as
those on Inflammation, Diagnosis and Treatment of Mouth
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