We are even assured by Bruley that in 1798 the white hair of a woman sixty years of age changed to black a few days before her death.

The bulbs in this case were found of great size, and appeared gorged with a substance from which the hair derived its color.

The white hairs that remained, on the contrary, grew from shriveled bulbs much smaller than those producing the black.

This patient died of phthisis.
A very singular case, published early in the century, was that of a woman whose hair, naturally fair, assumed a tawny red color as often as she was affected with a certain fever, and returned to its natural hue as soon as the symptoms abated.

Villerme alludes to the case of a young lady, sixteen years of age, who had never suffered except from trifling headaches, and who, in the winter of 1817, perceived that the hair began to fall out from several parts of her head, so that before six months were over she became entirely bald.