_Opium._—The post mortem appearances of persons who have been killed by the preparations of opium, are negative. Intense congestion of the brain and lungs are spoken of by most authors, but they seem to depend chiefly on the way in which the patient dies, rather than on any specific action of the drug. _Prussic Acid._—The skin is usually livid, and the muscles contracted; the stomach is congested, and the veinous system unusually full of blood. The most characteristic condition, when this acid is present, is the odor of bitter almonds exhaled from the stomach and tissues. _Alcohol._—The different preparations of alcohol may, when taken in large quantities, produce sudden coma and death. The bodies are said to resist decomposition for an unusual length of time. There is congestion, and sometimes extravasation of the blood in the brain; the veins everywhere are full of blood, and the bladder distended with urine. Chronic alcoholic poisoning is of a different nature; in this latter case the brain appears normal, but the lungs are usually congested. _Strychnia—Nux Vomica._—In cases of poisoning from these, the cramping and contraction of the muscles relax after death, but the brain is always congested with blood. _Corium, Aconite, Belladona, Lobelia, Digitalis, Stramonium, Veratrum._—All these poisons produce congestion of the brain, lungs and stomach. _Carbonic Oxide._—This gas is produced from burning charcoal, and forms the poisonous ingredient of illuminating gas. For post mortem appearances, see death from suffocation. _Carbolic Acid._—A number of deaths from this poison have been reported in the last few years. In this case, the stomach, lungs and intestines are intensely congested. _From Lightning._—In persons killed by lightning the internal viscera may be so lacerated and disorganized that the injection of the embalming fluid may be rendered impossible. _Drowning._—Persons who have been drowned usually die from asphyxia. The lungs are generally congested, the stomach contains some of the fluid in which the person may have been drowned, and must be emptied. The abdominal viscera may also be congested, but the blood generally remains fluid throughout the body, and is easily removed. _Strangulation._—In this instance the carotid arteries are generally ruptured; the heart, the lungs and the viscera, are usually congested. In death from suffocation the same symptoms are present. In cases of sunstroke, decomposition sets in very rapidly, and requires an immediate check; the lungs will frequently be found congested. _Epidemic, Cerebro-Spinal Meningitis._—In many cases the skin of the body and face may show purpuric patches. The rigor mortis is pronounced and long continued, but decomposition sets in early. The intestines may be swollen, and even ulcerated, and the lungs congested.