Our knowledge of traumatic endocarditis is still very imperfect, though many valuable contributions have been added to our literature since George Fischer1 published his excellent monograph on this topic.
The following case recently came under my observation, and as I had the opportunity of observing it from its very beginning until its end, a period of nearly two years, I consider it of sufficient interest to publish it.
—Albert S., aged 9, always enjoyed fair health. There was no syphilitic, tubercular or rheumatic history in the family. At the age of two the patient had measles and subsequently several attacks of acute bronchitis. No tubercular element in these attacks was noticed.During the winter of 1902 the patient contracted a light attack of pneumonia, which lasted about one week and left him rather weak. Mucous rales could be heard over both lungs for several weeks after the attack. During