<h3>Patient.</h3> —M. M., a Lithuanian laborer, aged 28, entered Cook County Hospital March 14, 1905, and was assigned to the care of Dr. Kuh. The following April he came under my service and remained under my observation until April 28, when a transfer to the surgical side was recommended. Dr. Schroeder performed an operation May 4, 1905, and the patient died May 5, 1905. <h3>History.</h3> —Family and personal history are negative and syphilis is denied. He states that his habits were always good and that he never sustained an injury. Three weeks previous to admission the patient began to complain of severe headaches, which were constant and generalized. At about the same time spells of vomiting appeared which seemed to have no relation to the gastric functions. A feeling of nausea always accompanied these vomiting spells, but sometimes there was nausea without vomiting. Somewhat later in the course of the