and Vidal shorten the name
to acne cornee.

Erasmus Wilson speaks of it as ichthyosis sebacea cornea. H. G. Brooke
describes a case in a girl of six. The first sign had been an eruption
of little black spots on the nape of the neck. These spots gradually
developed into papules, and the whole skin took on a dirty yellow
color. Soon afterward the same appearances occurred on both shoulders,
and, in the same order, spread gradually down the outer sides of the
arms--first black specks, then papules, and lastly pigmentation. The
black specks soon began to project, and comedo-like plugs and small,
spine-like growths were produced. Both the spines and plugs were very
hard and firmly-rooted. They resisted firm pressure with the forceps,
and when placed on sheets of paper rattled like scraps of metal. A
direct history of contagion was traced from this case to others.

Mibelli describes an uncommon form of keratodermia (porokeratosis). The
patient was a man of twenty-one, and exhibited the following changes in
his skin: On the left side of the neck, beyond a few centimeters below
the lobe of the ear, there were about ten small warty patches,
irregularly scattered, yellowish-brown in color, irregular in outline,
and varying in size from a lentil to a half-franc piece, or rather
more. Similar patches were seen on other portions of the face. Patches
of varying size and form, sharply limited by a kind of small,
peripheral "dike," sinuous but uninterrupted, of a color varying from
red to whitish-red, dirty white, and to a hue but little different from
that of the healthy skin. Similar patches were seen on the right hand,
and again on the back of the right hand was a wide space, prolonged
upward in the form of a broad band on the posterior surface of the
forearm to just below the olecranon, where the skin was a little
smoother and thinner than the surrounding skin, and altogether bare of
hairs. The disease was noticed at the age of two, and gradually
progressed. The patient always enjoyed the most perfect health, but had
contracted syphilis three years before. A brother of the patient, aged
twenty-four, for sixteen years has had the same skin-affection as this
patient, on the back of the hand, and the sister and father had noticed
similar lesions.

Diffuse symmetric scleroderma, or hide-bound disease, is quite rare,
and presents itself in two phases: that of infiltration (more properly
called hypertrophy) and atrophy, caused by sh