This is a hemorrhage from the respiratory organs. The blood that is expectorated comes from three different sources. It may come from the mucous membrane of the bronchial tubes, from a vessel ulcerated in a tuberculous cavity as in consumption, and from an aneurism of the aorta, or from the large trunks arising from it, in which case it soon proves fatal. Some cases depend on suppression of the menses, and are habitual and not dangerous, but in the majority of cases it is caused by disease of the heart, or consequent to irritation of tubercles. It may be simple, the blood being all spit up, or it may be attended by an infiltration of blood into the minute tubes and air cells, rendering a portion of the lung solid. The symptoms are some degree of pain or oppression at the chest, with cough, which brings up mouthfuls of blood, fluid or clotted. The quantity may vary from a teaspoonful to several pints, so that the patient may be suffocated by the abundance of the blood.

TREATMENT. -- A free current of air should be allowed to pass over the patient, his covering should be light, and a mild purge should be given to him. The feet should be placed in hot water. If dependent upon derangement of the menses, the sitz-bath (hot) should be ordered, and matico or other astringents be given. Or it may be arrested by putting one drachm of the oil of origanum in a pint bottle, and allow the patient to inhale the vapor. If matico, tannin, or other vegetable astringents are not at hand, common salt, acetate of lead, sulphuric acid, and alum may be used in cases of emergency. Small doses of digitalis should be given to control the circulation.