R. P., an ignorant Hungarian, received a slight scratch on the anterior surface of the second metacarpal (right) about April 17, 1911. He went home and applied a 5 per cent. phenol salve on a closed dressing, according to instructions given him by the druggist who sold the salve. April 24, he reported at my office with finger gangrenous from the distal end of the proximal phalanx to the root of the nail. The gangrene was dry and the finger was completely mummified and as hard as a stone. Moist hot dressings of weak liquor cresolis compositus were applied and by May l sloughs were separating. May 20 tendons and periosteum of phalanx had disappeared and May 26 finger was amputated one inch below metacarpophalangeal joint. The bone was soft and mushy and soft tissues devitalized. Recovery was uneventful.