He also learned that the deformity was quite rare in the Cape Coast region, and received no information tending to prove the conjecture that the tribes in West Africa used artificial means to produce the anomaly, although such custom is prevalent among many aborigines.
Probably the most remarkable case of a horn was that of Paul Rodrigues, a Mexican porter, who, from the upper and lateral part of his head, had a horn 14 inches in circumference and divided into three shafts, which he concealed by constantly wearing a peculiarly shaped red cap.

There is in Paris a wax model of a horn, eight or nine inches in length, removed from an old woman by the celebrated Souberbielle.

Figure 75 is from a wax model supposed to have been taken from life, showing an enormous grayish-black horn proceeding from the forehead.

Warren mentions a case under the care of Dubois, in a woman from whose forehead grew a horn six inches in diameter and six inches in height.
It was hard at the summit and had a fetid odor.

In 1696 there was an old woman in France who constantly shed long horns from her forehead, one of which was presented to the King.