in Surgery, an instrument for extract- Alphonso, ing bullets out of gunshot wounds. This instrument derives its name from the inventor, Alphonso Ferri, a physician of Naples. It consists of three branches, which are closed by a ring. When closed and introduced into the wound, the operator draws back the ring towards the handle, upon which the branches opening take hold of the ball; and then the ring is pushed from the half, by which means the branches grasp the ball firmly; and so it is extracted from the wound.