522 MEDICAL JURISPRUDENCE or marked with aphthous spots. There may be ulcerations in the stomach and intestines. The heart, fiver and kidneys show fatty degeneration. Chemical Tests.—1. The addition of hydrochloric acid to a liquid solu- tion gives a white precipitate, soluble in excess. 2. Sulphuretted hydrogen forms an orange precipitate of sulphide of antimony, soluble in ammonia or ammonium sulphide. 3. If the fluid containing some free hydrochloric acid be put in a plati- num capsule, and a fragment of zinc be introduced, a black deposit of metallic antimony is formed on the inside of the capsule; this will be turned yellow on adding ammonium sulphide. 4. Reinsch's Test.—The procedure is the same as in arsenic, but a bluish-black deposit is formed on the copper foil. On heating, the deposit sublimes readily and yields amorphous particles or needle-shaped crystals of antimony trioxide. 5. Marsh's Test.—The process is the same as in arsenic, but the flame produced by burning antimoniuretted hydrogen (stibine) has a bluish-green tint, and the stain formed by the deposit of antimony on the porcelain dish is black and lustreless, insoluble in hypochlorite of lime, but soluble in stan- nous chloride. On heating the delivery tube the metallic and silvery mirror of antimony is formed on both the sides in the vicinity of the heated part; the mirror does not sublimate, yielding octahedral crystals as in arsenic. Medico-Legal Points.—Antimony as a metal is not considered poisonous but when inhaled in the form of vapour it is said to have produced dangerous symptoms. Poisoning by antimony salts is rare in India. In his annual report for the year 1922, the Chemical Analyser of Sind reports the case of a person who died from the effects of antimony tartar given in 24-grain doses thrice with a purgative. The poison was detected in the viscera. In Europe, a few homicidal and still fewer suicidal cases have occurred. For homicidal purposes tartar emetic is given in small doses for several days, so that the symptoms caused by it may simulate some gastro-mtestinal disease. Accidental cases of poisoning by tartar emetic have been recorded from an overdose when given medicinally, or from its administration in mistake for cream of tartar, Epsom salts, bicarbonate of sodium, etc. Outbreaks of acute accidental poisoning by antimony have sometimes occurred from drinking lemonade prepared in cheap enamelled utensils. They are due to tartaric acid in the " lemonade crystals " or citric acid of fresh lemons dissolving some of the antimony oxide which is used instead of a non-poisonous tin oxide in" the manufacture of the white enamel coating.45 About seventy workmen of a firm at Newcastle-on-Tyne suffered from the symptoms of acute antimony poisoning after they had taken lemonade prepared from tartaric acid crystals which were dissolved in boil- ing water overnight in enamelled buckets. They all recovered. The enamel of the bucket contained antimony trioxide equivalent to 5 per cent of metallic antimony. Dr. Dunn found on analysis that an ordinary tumbler of ten ounces contained 0.57 grain of antimony or 1.52 grains of tartar emetic.46 In a school at Folkeston lemonade from fresh sliced lemons was prepared in white enamelled jugs. Half an hour after it was served, twenty-five persons were sick.47 45. Brit. Med. Jour., June 16, 1934, p. 1085. 46. Lancet, Aug. 18, 1928, p. 337. 47. Brit. Med. Jour., March 11, 1933, p. 423.