Because of the scarcity of data on the subject of placental transmission of tuberculosis, the following is deemed worthy of report:
—Mrs. K., aged 30, American housewife, eight months pregnant.
—Patient complained of cough, night sweats, failing appetite and loss of weight; she gave a family history of tuberculosis, one sister who had lived and slept with her having died of the disease a short time previously.
—The chest anteriorly and posteriorly revealed typical signs of tuberculosis in apices of both lungs. There was a loss of weight of 20 pounds in ten weeks in spite of pregnancy. The sputum contained both elastic tissue and tubercle bacilli.
—One month later, patient in normal labor, gave birth to a full-term, apparently healthy, 7-pound boy. The placenta and cord were immediately placed in 4 per cent. formalin solution and sent to Dr. A. S. Warthin, Ann Arbor,