This condition is the result of a more or less chronic thickening of the membranes lining the air passages, so that the dog is in apparent good health with the exception of a hard, dry, husky cough that is brought on by any excitement or exertion, and is usually worse in the morning and at night. These attacks of coughing end usually in a retching and gagging, as if vomiting or expelling a piece of phlegm from the throat. Give aperient medicine so as to keep the bowels open and use the following mixture: Tincture of nux vomica thirty drops, syrup of squills one ounce, water to make three ounces; dose from half a tea-spoonful to a tablespoonful three times a day after feeding, the first for a toy, the second for a St. Bernard or one of the larger breeds. If the cough is very severe give from fifteen drops to a teaspoonful of glyco-heroin in water. Feed underdone meat, raw eggs, gelatine or any easily digested food that will not distend the stomach unduly, as a distension of the stomach brings pressure on the chest and aggravates the condition."