vagina. The so-called
uterus didelphus is really a duplex uterus, or a veritable double
uterus, each segment having the appearance of a complete unicorn uterus
more or less joined to its neighbor. Vallisneri relates the history of
a woman who was poisoned by cantharides who had two uteruses, one
opening into the vagina, the other into the rectum. Morand,
Bartholinus, Tiedemann, Ollivier, Blundell, and many others relate
instances of double uterus in which impregnation had occurred, the
fetus being retained until the full term.

Purcell of Dublin says that in the summer of 1773 he opened the body of
a woman who died in the ninth month of pregnancy. He found a uterus of
ordinary size and form as is usual at this period of gestation, which
contained a full-grown fetus, but only one ovary attached to a single
Fallopian tube. On the left side he found a second uterus,
unimpregnated and of usual size, to which another ovary and tube were
attached. Both of these uteruses were distinct and almost entirely
separate.

Pregnancy with Double Uterus.--Hollander describes the following
anomaly of the uterus which he encountered during the performance of a
celiotomy:--

"There were found two uteruses, the posterior one being a normal organ
with its adnexa; connected with this uterus was another one, anterior
to it. The two uteruses had a common cervix; the anterior of the two
organs had no adnexa, though there were lateral peritoneal ligaments;
it had become pregnant." Hollander explains the anomaly by stating that
probably the Mullerian ducts or one of them had grown excessively,
leading to a folding off of a portion which developed into the anterior
uterus.

Other cases of double uterus with pregnancy are mentioned on page 49.

When there is simultaneous pregnancy in each portion of a double uterus
a complication of circumstances arises. Debierre quotes an instance of
a woman who bore one child on July 16, 1870, and another on October
31st of the same year, and both at full term. She had only had three
menstrual periods between the confinements. The question as to whether
a case like this would be one of superfetation in a normal uterus, or
whether the uterus was double, would immediately arise. There would
also be the possibility that one of the children was of protracted
gestation or that the other was of premature birth. Article 312 of the
Civil Code of France accords a minimum of one hundred and eighty and a
maximum of t