he cold poultice and lotion, and render
the formation of an adherent eschar impossible. This fact, the result
of much experience, is extremely interesting, and, I think, not easy
to be explained. It is illustrated by the following case.

CASE XIX.

Robert Hill, aged 16, received a blow yesterday from a bone which was
thrown at him, upon the outer condyle of the humerus. He complains of
extreme pain and there are much redness and swelling. I applied the
lunar caustic and directed the part to be exposed to the cold air.

On the succeeding day, I found that the eschar was quite adherent, and
that the pain, redness and swelling had much subsided, although there
was some stiffness of the elbow.

On the third day there was still further amendment. From this time no
remedy or attention was required.

CASE XX.

It frequently occurs to surgeons to receive slight wounds upon the
hands which prove very troublesome. Of this kind is the following.

Mr. L.C. had an irritable and inflamed sore on the ulnar side of the
third finger, occasioned by a bruise a fortnight ago. Many
applications had been made during this fortnight but the sore had no
disposition to heal. I applied the lunar caustic to form an adherent
eschar.

From this time the pain and inflammation subsided. The eschar remained
firm and adherent, and in six days separated leaving the wound
healed.

III. ON ULCERS.

From the preceding observations it would naturally be concluded that
the lunar caustic would afford a remedy for the treatment of ulcers.
This conclusion is perfectly just. Yet there are many circumstances
which render the mode of treating ulcers by the caustic, efficacious
or the contrary.

In order that the treatment by eschar may be successful, there must be
the following conditions in regard to the ulcer: first, the surface
occupied by the ulcer must not be too extensive; secondly, it must
not be exposed to much motion or friction; and thirdly, it must not be
attended by a profuse discharge; for all these circumstances have a
direct effect in, preventing the formation of an adherent eschar or of
removing it if formed.

I observe, therefore, that I have not found the mode of treatment by
eschar to succeed in large ulcers of the legs. But in small ulcers,
and especially in those irritable and painful little ulcers which are
so apt to form about the ankle and occasionally occur near, the tendo
achillis, and in which Mr. Baynton's plan is