On the following day the eschar was observed to be adherent, and the patient reported that she had suffered scarcely any pain, after the smarting of the caustic had ceased. There was a slight swelling round the puncture but that of the arm had totally subsided. The caustic was applied over and beyond the swelling. On the third day all tumefaction had subsided and there was no complaint whatever. I hoped that this case would have required no further attention or remedy. But my patient contrived unfortunately to rub off the eschar about a week after its formation, and so to expose the subjacent wound unhealed; she suffered however no pain or inconvenience from it; and it was again shielded by means of a fresh eschar, which remained adherent until removed by the healing process underneath. This puncture was so severe that the arm was in a state of ecchymosis for six or eight inches upwards, and I doubt not that without the caustic, there would have been severe and long continued suffering, and perhaps painful suppurations. CASE III. A female servant punctured the end of the finger by a pin; there succeeded much pain and swelling, and it appeared that the nail would separate, and the cuticle all round the finger was raised by the effusion of fluid. This fluid was evacuated and a poultice applied. On the third day the cuticle was removed, and the exposed surface was found to be ulcerated in several spots. The lunar caustic was passed slightly over the excoriated surface, which was then left exposed to dry. On the succeeding day the eschar was adherent and the pain had almost subsided. On the next day, the eschar still remained adherent, and as there was neither pain nor soreness, the patient used her finger. The eschar was at length removed by the healing process and was separated together with the nail, and the case was unattended by any further inconvenience or trouble either to the patient or myself. It is scarcely necessary to contrast the advantage of this mode of treatment with that by plasters, poultices, &c. It is at once more speedy and secure, and less cumbersome to such patients as are obliged to continue domestic avocations. CASE IV. The present case is somewhat more severe than those which have been already given, and what is of great importance, the caustic was not applied immediately after the accident. William Chantry, aged 50, received a stab in the wrist with a hay-fork yesterday and applied a poultice; to-day there are great pain and swelling, and the wounded orifice is very small. I applied the lunar caustic within the puncture, and directly a cold poultice to be worn over it; the arm was kept in a sling. The next day the swelling and pain were diminished, and a little lymph flowed from the wound. I again applied the caustic and continued the poultice.