These two children were
born at midnight on April 15th. Tynberg remarked that he believed
them to be distinct and separate children, and not dependent on a
common arterial system; he also expressed his intention of
separating them, but did not believe the operation could be
performed with safety before another year. Jacobi describes in
full Tynberg's instance of pygopagus. He says the confinement was
easy; the head of one was born first, soon followed by the feet
and the rest of the twins. The placenta was single and the cord
consisted of two branches. The twins were united below the third
sacral vertebrae in such a manner that they could lie alongside
of each other. They were females, and had two vaginae, two
urethrae four labia minora, and two labia majora, one anus, but a
double rectum divided by a septum. They micturated independently
but defecated simultaneously. They virtually lived separate
lives, as one might be asleep while the other cried, etc.
CLASS V.--While instances of ischiopagi are quite numerous, few
have attained any age, and, necessarily, little notoriety. Pare
speaks of twins united at the pelves, who were born in Paris July
20, 1570. They were baptized, and named Louis and Louise.
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