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.