The following case occurred during the service of Dr. Franklin G. Balch at the Massachusetts General Hospital. A rather careful search of the literature has failed to reveal a similar case, although it seems probable that the condition may occur in any case in which there are strong adhesions. Patient. —N. M., aged 29, married, unipara, a strong young Irish woman, had always been well. History. —There was no history of previous illness. The patient was seven months pregnant but menstruation had not ceased during pregnancy. Jan. 31, 1906, the patient entered Boston Lying-in Hospital complaining of much pain and was supposed to be in labor. There was a history of abdominal pain for six weeks, not localized, and not sufficient to cause her to go to bed. The evening before entrance, the pain became very sharp and severe. The abdomen soon became tender and hard, the patient was unable