Most of the illustrations are made from roentenograms of chests. The author discusses the types of hemorrhage of pulmonary tuberculosis with reference to the source of blood and also presents the pathologic changes [ill]nd theories concerning hemoptysis. With reference to the time of year, he finds that most hemorrhages occur in December. They are also frequent in April and July. The effects of various substances, such as tuberculin, insulin and vitamin C, are discussed, as well as treatment by artificial pneumothorax, rest, sedatives and other usual methods. He calls attention to the fact that pulmonary hemorrhage may be the first external evidence of tuberculosis in the group he classifies as inflammatory or allergic lesions. This work contains a good bibliography, and all the material is well presented.