as to position, but not in relation to the
epigastric artery. The taxis performed in reference to the position of
both as regards the canal and abdominal rings. The seat of stricture
varying. The sac. The lines of incision required to avoid the epigastric
artery. Necessity for opening the sac.

COMMENTARY ON PLATES 39 & 40

DEMONSTRATIONS OF THE NATURE OF CONGENITAL AND
INFANTILE INGUINAL HERNIAE, AND OF HYDROCELE.

Descent of the testicle. The testicle in the scrotum. Isolation of its
tunica vaginalis. The tunica vaginalis communicating with the abdomen.
Sacculated serous spermatic canal. Hydrocele of the isolated tunica
vaginalis. Congenital hernia and hydrocele. Infantile hernia. Oblique
inguinal hernia. How formed and characterized.

COMMENTARY ON PLATES 41 & 42

DEMONSTRATIONS OF THE ORIGIN AND PROGRESS
OF INGUINAL HERNIAE IN GENERAL.

Formation of the serous sac. Formation of congenital hernia. Hernia in
the canal of Nuck. Formation of infantile hernia. Dilatation of the
serous sac. Funnel-shaped investments of the hernia. Descent of the
hernia like that of the testicle. Varieties of infantile hernia.
Sacculated cord. Oblique internal inguinal hernia--cannot be congenital.
Varieties of internal hernia. Direct external hernia. Varieties of the
inguinal canal.

COMMENTARY ON PLATES 43 & 44

THE DISSECTION OF FEMORAL HERNIA AND THE SEAT OF STRICTURE.

Compared with the inguinal variety. Position and relations. Sheath of
the femoral vessels and of the hernia. Crural ring and canal. Formation
of the sac. Saphenous opening. Relations of the hernia. Varieties of the
obturator and epigastric arteries. Course of the hernia. Investments.
Causes and situations of the stricture.

COMMENTARY ON PLATES 45 & 46

DEMONSTRATIONS OF THE ORIGIN AND PROGRESS OF FEMORAL
HERNIA; ITS DIAGNOSIS, THE TAXIS, AND THE OPERATION.

Its course compared with that of the inguinal hernia. Its investments
and relations. Its diagnosis from inguinal hernia, &c. Its varieties.
Mode of performing the taxis according to the course of the hernia. The
operation for the strangulated condition. Proper lines in which
incisions should be made. Necessity for and mode of opening the sac.

COMMENTARY ON PLATE 47

THE SURGICAL DISSECTION OF THE PRINCIPAL BLOODVESSELS
AND NERVES OF THE ILIAC AND FEMORAL REGIONS.

The femoral triangle. Eligible place for tying the femoral artery. The
operations of Scarpa and Hunter. Remarks on the com