The direction of suicidal wounds, when the person is right-handed, is generally from above downwards and inwards on the chest, and on the left side. An upward direction points rather to homicide.
Cut throat wounds, when suicidal and inflicted by the right hand, are generally oblique from left to right, beginning higher up than they end. They generally cross the thyroid cartilage, and the larger vessels may escape; if made below the thyroid cartilage they are generally smaller and horizontal. The skin is the last structure divided, and there may be several so-called “tentative cuts.” It has been held that when the large vessels are cut the suicide stops, but this is incorrect, as in some cases the wound has reached the spine and the vessels been quite severed. Suicides may try to decapitate themselves from behind, and failing this stab themselves. A homicidal cut throat wound, when made from the front with the right hand, commences on the right side and is carried to the left; they are often deep incisions to the vertebræ and the tissues “undercut” at the ends. A homicidal cut throat wound when made from behind the victim resembles a suicidal one. When wounds are present on the forearms, hands, and fingers, and if there are injuries on other parts of the body also, the inference would be that the hand wounds were received in guarding the throat or other efforts at defence from a homicidal attack.
Wounds produced by Firearms.—To distinguish between suicidal, homicidal, and accidental wounds is far from easy. If the weapon be held hard up or close to the body, as in suicide, the skin and hair would be scorched and blackened, as would probably the hand that held the weapon, but this has not occurred in every case. The grasping of the firearm by the hand in cadaveric spasm is certain evidence of suicide, as this cannot be simulated by an assailant placing the weapon in the hand after death. Full investigation should be made by noting the bullet track and surrounding objects which may have been grazed in its course, in order to form a probable estimate of the direction from whence it came. Bullet wounds in the back are usually homicidal.
Duties of a Medical Man When Called
to Examine a Wounded Person
The surgeon should at once visit the wounded party, and proceed to examine the injury, for if this be done before swelling occurs, he will be better able to form an opinion of its nature, extent, and severity. If the wound has been dressed, he should, if possible, obtain the attendance of the person who applied the dressings, and who would be able to describe their nature, and the dangers to be avoided in their removal, should that be deemed necessary. In no case should a surgeon remove the dressings applied by a professional brother without his presence and assistance. The condition of the injured party should be carefully noted, and a minute description of the wound written down at the time. The statements of the bystanders are also useful and should be noted. The procedure in the examination of the dead body has been previously described ([p. 60]).
An important question here arises. Have the wounds found on the body been produced during life or after death? The answer is beset with difficulties, and considerable caution will be necessary, but tables will be given under the different kinds of wounds to assist the diagnosis. Signs of vital reaction are important, as showing the ante-mortem infliction of the wound; but these may, to some extent, be removed by the action of water, as in cases where the body is found in a pond. Under these circumstances the evident signs of drowning—water in the stomach, &c.—will assist the diagnosis. The presence of putrefaction also greatly obscures the diagnosis. The presence of coagulated blood between the edges of the wound is not a trustworthy indication of the ante-mortem infliction of the wound, as experiment has shown that as long as the body remains warm coagulation may take place. Coagulation even in contused wounds, effected before death, may be retarded from various unknown causes—disease, e.g. scurvy; mode of death, e.g. asphyxia. The amount of hæmorrhage on or around the body is, other things being equal, a safe criterion as to the time when the wound was inflicted; if in considerable amount, arterial blood points to ante-mortem injury; the presence of venous points blood to post-mortem injury.
Care should be taken to record and photograph the body in position where found, and its relation to surrounding objects. Careful note should be made of the surroundings and the character and presence of any blood-stains, footprints, &c. The question may have to be considered as to whether the body is in the place it was when the wounds were inflicted. Blood in any quantity in one place, and the body found in another so seriously injured that locomotion would be impossible, point to the body having been removed.
Signs of a struggle, if any, should be recorded. If a weapon be found near to the body, its position should be noted, and if in the hand, the firmness of the grasp—cadaveric spasm—should be recorded. All clothing should be carefully examined, and the relation of cuts and body wounds noted. All blood-stains on the clothing should be examined and described.
Multiple bullet wounds denote homicide, but suicides have been known to inflict more than one wound. It is strong evidence of suicide if the gun or pistol has burst by the explosion, as suicides have a predilection for overloading the weapon employed.