penises, each as large as that of a
child of six months. Urination proceeded simultaneously from both
penises; he had also two scrotums. Behind and between the legs there
was another limb, or rather two, united throughout their length. It was
connected to the pubis by a short stem 1/2 inch long and as large as
the little finger, consisting of separate bones and cartilages. There
was a patella in the supernumerary limb on the anal aspect, and a joint
freely movable. This compound limb had no power of motion, but was
endowed with sensibility. A journal in London, after quoting Acton's
description, said that the child had been exhibited in Paris, and that
the surgeons advised operation. Fisher, to whom we are indebted for an
exhaustive work in Teratology, received a report from Havana in July,
1865, which detailed a description of Santos at twenty-two years of
age, and said that he was possessed of extraordinary animal passion,
the sight of a female alone being sufficient to excite him. He was said
to use both penises, after finishing with one continuing with the
other; but this account of him does not agree with later descriptions,
in which no excessive sexual ability had been noticed. Hart describes
the adult Santos in full, and accompanies his article with an
illustration. At this time he was said to have developed double
genitals, and possibly a double bladder communicating by an imperfect
septum. At adulthood the anus was three inches anterior to the os
coceygeus. In the sitting or lying posture the supernumerary limb
rested on the front of the inner surface of the lower third of his left
thigh. He was in the habit of wearing this limb in a sling, or bound
firmly to the right thigh, to prevent its unseemly dangling when erect.
The perineum proper was absent, the entire space between the anus and
the posterior edge of the scrotum being occupied by the pedicle.
Santos' mental and physical functions were developed above normal, and
he impressed everybody with his accomplishments.
Geoffroy-Saint-Hilaire records an instance in which the conformation
was similar to that of Santos. There was a third lower extremity
consisting of two limbs fused into one with a single foot containing
ten distinct digits. He calls the case one of arrested twin development.

Van Buren and Keyes describe a case in a man of forty-two, of good,
healthy appearance. The two distinct penises of normal size were
apparently well formed and were plac