The surgeons undertook to preserve the other by separating him from the corpse of his brother, but he died on the third day after the operation.
In 1866 Boehm gives an account of Guzenhausen's case of twins who were united sternum to sternum.

An operation for separation was performed without accident, but one of the children, already very feeble, died three days after; the other survived.

The last attempt at an operation like this was in 1881, when Biaudet and Buginon attempted to separate conjoined sisters (Marie-Adele) born in Switzerland on June 26th.
Unhappily, they were very feeble and life was despaired of when the operation was performed, on October 29th.

Adele died six hours afterward, and Marie died of peritonitis on the next day.
CLASS III .-- Those monsters joined by a fusion of some of the cranial bones are sometimes called craniopagi.

A very ancient observation of this kind is cited by Geoffroy-Saint-Hilaire.