The order of birth was as follows: one head and body, the lower extremity, and the second body and head.
CLASS VII .-- There are many instances of bicephalic monsters on record.
Pare mentions and gives an illustration of a female apparently single in conformation, with the exception of having two heads and two necks.
The Ephemerides, Haller, Schenck, and Archenholz cite examples, and there is an old account of a double-headed child, each of whose heads were baptized, one called Martha and the other Mary.

One was of a gay and the other a sad visage, and both heads received nourishment; they only lived a couple of days.

There is another similar record of a Milanese girl who had two heads, but was in all other respects single, with the exception that after death she was found to have had two stomachs.

Besse mentions a Bavarian woman of twenty-six with two heads, one of which was comely and the other extremely ugly; Batemen quotes what is apparently the same case--a woman in Bavaria in 1541 with two heads, one of which was deformed, who begged from door to door, and who by reason of the influence of pregnant women was given her expenses to leave the country.
A more common occurrence of this type is that in which there is fusion of the two heads.

Moreau speaks of a monster in Spain which was shown from town to town.