The body, generally the blood, serous cavities, stomach and the various tissues usually exhale, for some time after death, the characteristic odor of the acid. Turgescence of the venous system, and emptiness of the arterial system, are commonly remarked throughout the body. The stomach and intestines are congested and red. The liver and lungs are gorged with blood. =Strychnia—Nux vomica.= In poisoning with this substance, the rigidity of the body which exists during life, is frequently retained for hours after death. There is congestion of the membranes of the brain and spinal cord. The stomach is frequently quite natural in appearance, as also the intestines, although occasionally signs of irritation are noticed in both. =Alcohol.= In death from alcohol, the body is slow to putrify, and the internal organs exhale no cadaveric odor, but rather that of recent flesh, or in some cases a faint odor of brandy. The appearances constantly found are, hyperæmia of the brain, sometimes cerebral hæmorrhage; hyperæmia of the large abdominal veins, or hyperæmia of the lungs and heart, and always visible fluidity and dark color of the blood. =Carbonic Oxide.= This is the poisonous ingredient of illuminating gas, and is generated by burning charcoal. It is usually in one of these forms that it is the cause of death. The most characteristic appearance after death, is the bright cherry-red color of the heart. There is, also, hyperæmia of the lungs and of the right side of the heart. =Opium.= In cases of death from this substance, lividity of the skin is usually present. Turgescence of the vessels of the brain, and watery effusion into the ventricles are generally met with. The lungs are sometimes found gorged with blood. The stomach is occasionally red, but decided inflammation is rare. The blood is always fluid, and the body is apt to pass rapidly into putrefaction. 2. Death from Suffocation. By suffocation is meant that condition in which the system is prevented from receiving the necessary amount of oxygen through the lungs. The term is generally restricted to a condition arising from the obstruction of the air passages, either internally, or from without, or from the breathing of irrespirable gases. (The latter form being attended also by blood-poisoning, which we have already noticed.) The appearances noticed are the following: The face may be more or less bluish-red, swollen, with protruding eyes, or differing in no respect from that observed after other kinds of death. Froth is often observed coming out of the mouth. There is a universal and unusual fluidity and dark color of the blood. Hyperæmia of the right side of the heart, while the left is either entirely empty or contains only a few drachms of blood, hyperæmia of the lungs and congestion of the pulmonary artery, are seldom wanting.