_Lesions._ Escharotic whitening in patches of the mucosa of the mouth, throat, gullet, stomach and intestines, with acute congestion, ulceration and ecchymosis, and sometimes blackening by the formation of the sulphide. The contents of the bowels may be serous or bloody and more or less glairy. Like arsenic, mercuric chloride concentrates its action on the intestinal canal by whatever channel it may have entered the body. _Treatment._ The mercury should be precipitated in an insoluble form and then eliminated by emesis or by the stomach pump. White of eggs is usually the most available agent producing the albuminate of mercury. This is, however, still soluble in acid and alkaline liquids, in chlorides of potassium, sodium or calcium and even in excess of albumen. Vomiting may be favored by tickling the fauces, or by hypodermic injection of apomorphia. This may be followed by boiled flaxseed or copious drinks of rain water. When the mercury has been largely eliminated the salivation may be controlled by chlorate of potash, and the digestive disorder met by bitters and iron sulphate. _Test for Mercury._ Place a few drops of the suspected solution on a clean surface of copper; acidulate with muriatic acid; then touch the copper through the liquid with a piece of zinc; a silver colored stain will be formed easily dissipated by heat. POISONING BY SULPHUR. Fatal dose, horse 16 ozs. Symptoms: dullness, anorexia, colic, diarrhœa, sulphur odor. Lesions: congestion, desquamation, ulceration of gastro-intestinal mucosa, sulphur odor in flesh, blood nearly fluid, blackens silver. Treatment: chloride of lime, oil, puncture rumen or colon, stimulants. In excessive doses this is irritant. The horse is poisoned by 16 ozs. (Tabourin): violent colics follow a dose of 12 ozs. (Collaine). Cattle are less susceptible. _Symptoms._ Dullness, anorexia, colic, pulse small and quick, skin cold and clammy. Fœtid flatus and profuse diarrhœa, are marked symptoms. _Lesions._ Injection of the gastro-intestinal mucosa, shedding of the epithelium, ulceration, and sometimes gangrene. Sulphur is found in the ingesta and fæces and a sulphur odor is prominent, not only in the bowels but also in the flesh. Tympany from H_{2}S is common. The blood is mostly fluid, and ecchymosis is shown on heart, lungs and other internal organs. The tissues blacken silver. _Treatment._ Chloride of lime, oleaginous laxatives, use trochar and canunla for tympany. In prostrate conditions give stimulants (alcohol, ether). POISONING BY BROMINE AND IODINE. Poisoning by these agents is rare in domestic animals. Bromine 2 drs. killed a dog in 5 hours: 10 to 12 drops in 1 oz. water intravenously killed a dog suddenly, and 5 to 6 drs. of iodine by the mouth killed in a few days (Orfila). A horse had colic from taking ½ oz. iodine (Tabourin), others died from the effect of 2 drs. doses intravenously (Patu).