The parts which we may wish to examine in the region of the neck in a post-mortem examination, include the tongue, the larynx, the trachea and the œsophagus. These may be removed together, by first making a single, straight incision from the chin, down the central line of the neck to the sternum. Next turn aside the integument with the superficial structures, separate the muscles of the tongue from their attachment to the jaw, and divide the mucous membrane of the floor of the mouth on either side of the tongue, when, with the tenaculum, the latter may be drawn down beneath the jaw. The neck being well extended and the tongue forcibly drawn down, the knife may be carried back on either side of that organ, dividing the muscles and mucous membranes, including the palatine arches and tonsils, when the tongue may be so drawn down as to permit the knife to reach the posterior walls of the pharynx. This being divided, from the slight adhesion to the spinal column, the whole may now be drawn down and removed together, the trachea and œsophagus being divided at the upper end of the sternum. By the use of the enterotome, the pharynx, larynx and trachea may be laid open from behind, which will fully expose their interior for careful examination. After the examination of the parts is completed, if it is desired to preserve the specimen, the cavity remaining may be so filled with paper or rags, as, upon the closing of the part, to leave little or no evidence of the absence of any portion. Through the mouth, the buccal cavity may be examined, when there may be noted the condition of the teeth, gums, tonsils, palate, etc.; the presence or absence of ulcers on any of these parts, or of food or other foreign substances within the cavity. OPERATION ON THE CHEST.