The following case is unique in several particulars. The character of the infection, the pathologic conditions found on operation, and the curative measures adopted were all unusual in my experience.
—M. C., a girl of 12, was admitted to the New York Eye and Ear Infirmary (service of Dr. Kenefick) and came under my care Dec. 11, 1908. The history was briefly that of a neglected running ear of several month's standing. Two weeks before coming to the hospital the child complained of earache, headache and tenderness back of the ear. A swelling over the mastoid region made its appearance, but nothing was done until the symptoms became urgent and the patient's condition bad. On examination the usual signs of a subperiosteal abscess were found. A large, soft, fluctuating mass occupied the postauricular region, and bulged into and occluded