izaran, Dibot, and Chabert are among others recording the
phenomenon of coexisting extrauterine and intrauterine pregnancy.
Argles mentions simultaneous extrauterine fetation and superfetation.

Sanger mentions a triple ectopic gestation, in which there was twin
pregnancy in the wall of the uterus and a third ovum at the fimbriated
end of the right tube. Careful examination showed this to be a case of
intramural twin pregnancy at the point of entrance of the tube and the
uterus, while at the abdominal end of the same tube there was another
ovum,--the whole being an example of triple unilateral ectopic
gestation.

The instances of delivery of an extrauterine fetus, with viability of
the child, from the abdomen of the mother would attract attention from
their rarity alone, but when coupled with associations of additional
interest they surely deserve a place in a work of this nature. Osiander
speaks of an abdominal fetus being taken out alive, and there is a
similar case on record in the early part of this century. The London
Medical and Physical Journal, in one of its early numbers, contained an
account of an abdominal fetus penetrating the walls of the bladder and
being extracted from the walls of the hypogastrium; but Sennertus gives
a case which far eclipses this, both mother and fetus surviving. He
says that in this case the woman, while pregnant, received a blow on
the lower part of her body, in consequence of which a small tumor
appeared shortly after the accident. It so happened in this case that
the peritoneum was extremely dilatable, and the uterus, with the child
inside, made its way into the peritoneal sac. In his presence an
incision was made and the fetus taken out alive. Jessop gives an
example of extrauterine gestation in a woman of twenty-six, who had
previously had normal delivery. In this case an incision was made and a
fetus of about eight months' growth was found lying loose in the
abdominal cavity in the midst of the intestines. Both the mother and
child were saved. This is a very rare result. Campbell, in his
celebrated monograph, in a total of 51 operations had only seen
recorded the accounts of two children saved, and one of these was too
marvelous to believe. Lawson Tait reports a case in which he saved the
child, but lost the mother on the fourth day. Parvin describes a case
in which death occurred on the third day. Browne quotes Parry as saying
that there is one twin pregnancy in 23 extrauter