ustrate chiefly the origin and causes of hospital gangrene, the
relations of continued and malarial fevers, and the pathology of camp
diarrhea and dysentery, by Joseph Jones; Surgeon P. A. C. S., Professor
of Medical Chemistry in the Medical College of Georgia, at Augusta,
Georgia.

Hearing of the unusual mortality among the Federal prisoners confined at
Andersonville; Georgia, in the month of August, 1864, during a visit to
Richmond, Va., I expressed to the Surgeon General, S. P. Moore,
Confederate States of America, a desire to visit Camp Sumter, with the
design of instituting a series of inquiries upon the nature and causes of
the prevailing diseases. Smallpox had appeared among the prisoners, and
I believed that this would prove an admirable field for the establishment
of its characteristic lesions. The condition of Peyer's glands in this
disease was considered as worthy of minute investigation. It was
believed that a large body of men from the Northern portion of the United
States, suddenly transported to a warm Southern climate, and confined
upon a small portion of land, would furnish an excellent field for the
investigation of the relations of typhus, typhoid, and malarial fevers.

The Surgeon General of the Confederate States of America furnished me
with the following letter of introduction to the Surgeon in charge of the
Confederate States Military Prison at Andersonville, Ga.:

CONFEDERATE STATES OF AMERICA,
SURGEON GENERAL'S OFFICE, RICHMOND, VA.,
August 6, 1864.

SIR:--The field of pathological investigations afforded by the large
collection of Federal prisoners in Georgia, is of great extant and
importance, and it is believed that results of value to the profession
may be obtained by careful investigation of the effects of disease upon
the large body of men subjected to a decided change of climate and those
circumstances peculiar to prison life. The Surgeon in charge of the
hospital for Federal prisoners, together with his assistants, will afford
every facility to Surgeon Joseph Jones, in the prosecution of the labors
ordered by the Surgeon General. Efficient assistance must be rendered
Surgeon Jones by the medical officers, not only in his examinations into
the causes and symptoms of the various diseases, but especially in the
arduous labors of post mortem examinations.

The medical officers will assist in