Acute dilatation of the stomach is not a common condition, and the possibility of its confusion with cystic disease of some abdominal viscus must be considered as remote, but that this is real is illustrated by a case under the care of Mr. W. H. Brown, at the Leeds General Infirmary1. The patient, a man 55 years old, was in a state of collapse, and the abdomen was distended, with dulness on percussion between the umbilicus and the pubes. There was great abdominal pain, and bloody urine was evacuated from the bladder by catheterization. Exploratory puncture of the swelling gave exit to thick, greenish fluid, with a peculiar odor suggestive of the contents of a pancreatic cyst. A definite diagnosis could not be reached, but as the patient seemed certain to die if unrelieved, and as the symptoms seemed due to pressure induced by the fluctuating swelling, it was