continued about a week.

Five days after this period, I again observed a disposition to excoriate. I applied the caustic.

In two days more, the eschars were adherent, and there was no further appearance of excoriation.

In ten more days, the eschars had separated and all the ulcers and excoriations were completely healed.

This case occurred several years ago, and there has been no return of the affliction whatever.

Case XXIII.

Mr. Marshall, aged 60, had a troublesome ulcer under the outer ankle, of an oblong form and of the size of sixpence. He has been long subject to ulcers of the legs, and he had a similar ulcer to the present one in the same situation, some years ago, which proved extremely difficult to heal under usual remedies. The veins are varicose.—From the small size of the ulcer, I applied the lunar caustic and protected the eschar by the gold-beater's skin.

On the following day, I found the eschar complete but unadherent by the effusion of a little fluid; this I evacuated daily in the manner already described, for about a fortnight, when the eschar became adherent.

During the progress of the cure a little excoriation formed round the eschar. I touched the parts with the caustic, and the eschar thus formed served to support that formerly made, and so to do good. The whole adhered until the sore was very nearly healed; but as it was situated in a part greatly exposed, it was removed by accident. The caustic was again applied; fluid formed underneath the eschar as before and required evacuating thrice; but at length the eschar adhered, and in due time separated leaving the ulcer quite healed.

The same patient has since been affected by similar ulcers at different times in different parts of the leg. He applied early and they were each time easily cured by one application of the caustic. He has also twice had injuries upon the shin, which were readily cured in the same manner.

Case XXIV.

The following case must not be regarded as altogether trifling. For such sores are very apt to spread and to remain long very troublesome.

An old gentleman came to me with an oblong ulcer on the shin about an inch in length; it was very painful and inflamed. I applied the lunar caustic to form an eschar and requested him to call on the following morning. He did not come, however, but on seeing him the next day it was requisite to evacuate a little fluid; this was repeated on they third day, after which period the eschar remained adherent, and the part totally free from pain.

The eschar separated in about three weeks leaving the part healed.