1. =Identification of the Body.= In ordinary cases the name of the deceased will be given upon the autopsy-permit, and this will serve as sufficient identification. In large autopsy-services, when several cadavers may be brought in at the same time, each one should be properly tagged so that no mistake is possible. It is necessary in medicolegal cases to make a more formal identification by having the cadaver positively identified by persons having knowledge of the individual during life, or by those who first saw the body, or who took it in charge. In such cases when identification is impossible at the time of autopsy the protocol should give in full details the place, time, and conditions of discovery of the body, with an accurate description of its external characteristics, clothing, articles found on the body, surroundings, etc. Bertillon measurements and finger-markings may be taken; dental work should be carefully described; false teeth and hair, eyeglasses, etc., should be preserved, and the most careful attention should be paid to bodily anomalies or peculiarities, birth-marks, tattoo, etc. Photographs, casts, Roentgengrams, etc., may be taken. Powder-marks, blood-stains, as well as those of semen and other discharges, should be described and, if necessary, preserved. Legal names, as well as aliases, should be recorded and attested in all cases of legal significance. In fact, the only proper way to conduct any autopsy is with the assumption that the results will have legal value; and such an assumption is the best safeguard against important omissions. 2. =Sex.= This should always be mentioned in the protocol. In the case of pseudohermaphrodism the determination of the real sex may be difficult and may eventually be decided by microscopic studies. Likewise in bodies that have been burned or mutilated the question of sex becomes a matter of anatomic and histologic study. The character of the bones, pelvis, remains of sexual organs, etc., are used as criteria to decide the question. In cases of burning, the uterus in the female and the prostate in the male may often be recognized microscopically when the head and extremities are burned off and only a charred mass of flesh and bone remains. 3. =Age.= When the true age is not known the apparent age must be estimated by considering the general appearance of the body, development, bones, epiphyses, sutures, blood-vessels, skin, hair, teeth, sexual organs, etc. Roentgengrams of the epiphyses, hands and feet may be made. The presence of an arcus senilis should be noted. Arteriosclerosis of the temporal and radial arteries may be determined by inspection and palpation. The determination of the age of the new-born will be considered in a later chapter.