he Form of Questions and Answers Prepared Especially
for Students of Medicine

by

HENRY W. STELWAGON, M.D., PH.D.

Professor of Dermatology in the Jefferson Medical College, Philadelphia;
Dermatologist to the Howard and Philadelphia Hospitals, etc.

Seventh Edition, Thoroughly Revised

Illustrated

Philadelphia and London
W. B. Saunders Company
1909

Set up, electrotyped, printed, 1890. Reprinted July, 1891.
Revised, reprinted, June, 1894. Reprinted March, 1897.
Revised, reprinted, August, 1899. Reprinted
September, 1901, May, 1902, September, 1903.
Revised, reprinted January, 1905.
Reprinted March, 1906. Revised,
reprinted March, 1909.

Printed in America

Press of
W. B. Saunders Company
Philadelphia

PREFACE TO SEVENTH EDITION.

In the present--seventh--edition the subject matter, especially as
regards the practical part, has been gone over carefully and the
necessary corrections and additions made. Nineteen new illustrations
have been added, a few of the old ones being eliminated. It is hoped
that the continued demand for this compend means a widening interest in
the study of diseases of the skin, sufficiently keen as to lead to the
desire for a still greater knowledge.

H.W.S.

PREFACE TO FIRST EDITION.

Much of the present volume is, in a measure, the outcome of a thorough
revision, remodelling and simplification of the various articles
contributed by the author to Pepper's System of Medicine, Buck's
Reference Handbook of the Medical Sciences, and Keating's Cyclopaedia of
the Diseases of Children. Moreover, in the endeavor to present the
subject as tersely and briefly as compatible with clear understanding,
the several standard treatises on diseases of the skin by Tilbury Fox,
Duhring, Hyde, Robinson, Anderson, and Crocker, have been freely
consulted, that of the last-named author suggesting the pictorial
presentation of the "Anatomy of the Skin." The space allotted to each
disease has been based upon relative importance. As to treatment, the
best and approved methods only--those which are founded upon the
aggregate experience of dermatologists--are referred to.

For general information a statistical table from the Transactions of the
American Dermatological Association is appended.

H.W.S.

CONTENTS.