This case was said to have been caused in the following manner: Two women, one of whom was pregnant with the twins at the time, were engaged in an earnest conversation, when a third, coming up behind them, knocked their heads together with a sharp blow.

Bateman describes the death of one of the twins and its excision from the other, who died subsequently, evidently of septic infection.

There is a possibility that this is merely a duplication of the account of the preceding case with a slight anachronism as to the time of death.
At a foundling hospital in St.Petersburg there were born two living girls, in good health, joined by the heads.

They were so united that the nose of one, if prolonged, would strike the ear of the other; they had perfectly independent existences, but their vascular systems had evident connection.
Through extra mobility of their necks they could really lie in a straight line, one sleeping on the side and the other on the back.
There is a report a of two girls joined at their vertices, who survived their birth.

With the exception of this junction they were well formed and independent in existence.