_Symptoms._ Violent colicy pains, salivation, emesis in vomiting animals, diarrhœa, iodine or bromine odor, acute coryza, red eyes, dilated pupils, weakness, debility, vertigo, convulsions. If the patient survives the glandular system undergoes atrophy, with emaciation and scaly skin eruptions. _Lesions._ After large doses there are congestion, ulceration, corrosion and sloughing of the œsophagus, gastric and intestinal mucosa, and more or less yellow discoloration of the parts. The odor is characteristic. With iodine there may be blue iodide of starch in the ingesta. _Treatment._ Favor emesis by tickling the fauces and giving tepid water, or apomorphia subcutem. Boiled starch is the best antidote and may be given freely, both by mouth and rectum. Opium is often called for to relieve suffering. POISONING BY COPPER. Copper sulphate: Fatal dose, horse, dog. Symptoms: Dullness, colic, blue or green vomit, diarrhœa, straining, weakness, spasms, palsy, albuminuria, icterus, hæmoglobinuria, impaired appetite, emaciation, spasms. Lesions: Redness, softening, ulceration, sloughing of alimentary mucosa, methe-globinæmia, fatty liver, enlarged spleen, ingesta give copper film on polished iron. Treatment: Albumen, milk, mucilage, iron filings, sulphur, magnesia, laxatives, opium. Avoid acids. The common copper poisons are the sulphate and acetate. Copper alum, oxide or carbonate of copper and paints with a copper base are less frequently taken. =Sulphate of copper= 1 ounce has proved fatal to the horse. In dilute solution or with mucilaginous liquids it is much less injurious. Ten grains to 2 drachms subcutem have killed the dog. (Tabourin.) _Symptoms._ Dullness, colics, emesis of blue or greenish matter in vomiting animals, diarrhœa, tenesmus, weakness, trembling, spasms, trismus, paralysis, small, weak pulse, hurried breathing. In experimental chronic poisoning in the sheep, albuminuria, icterus, hæmaglobinuria, hæmaturia, impaired appetite and rumination, constipation followed by diarrhœa, great emaciation and weakness and finally convulsions. (Ellenberger and Hofmeister). _Lesions._ Redness and softening of the alimentary mucosa, ulceration, sloughing, perforation. In the chronic forms methe-globinæmia, free hæmatin as crystals in liver, spleen and kidney, nephritic extravasation, fatty degeneration of the liver, enlarged spleen, and catarrhal changes in the intestinal mucosa. Polished iron placed in the gastric or intestinal contents becomes coated with copper. _Treatment._ White of egg, milk, mucilage, iron filings, sulphur, calcined magnesia, laxatives. Opium may be required to calm suffering, but acids must be carefully avoided. POISONING BY ZINC.