Upon his arrival, Rokicki was seen in one of his attacks; he was curled up with excruciating pain, and the abdomen was rigid, though it was impossible to produce additional pain by external pressure. There was spasmodic vomiting, frequently followed by slight relief from the pain, which however shortly recurred and caused the patient to cry out in his suffering. The condition was controlled by opiates but lasted a full week. The leucocytes remained normal and there was no rise of temperature. The attack ceased spontaneously. Save for the pain, Rokicki’s =mental examination= proved entirely negative. =Physically=, Rokicki was fairly well developed and nourished. His pupils were slightly irregular: the left markedly larger than the right; both pupils failed to react to light, and the left pupil also failed to react in accommodation. There were no other reflex disorders evident to systematic examination, nor was there sensory disturbance or speech defect. The heart seemed somewhat enlarged but there were no murmurs; blood pressure: systolic 150; diastolic 110. The correct symptomatic diagnosis in Rokicki’s case proved to be gastric crises, and this diagnosis must perforce be the first to entertain in view of the chronicity, the periodicity, the non-relation to diet, and the spontaneous cessation of the seizures. The observation of Argyll-Robertson pupils was naturally held to substantiate the diagnosis of TABES DORSALIS. The possibility of abdominal inflammation could be shortly dismissed on account of the absence of tenderness (the rigidity in this case was not accompanied by tenderness), fever, and other characteristic signs. There was no diarrhoea, such as is found in lead colic, and there was no other sign of plumbism. Jaundice was absent and there was no special radiation of pain from the abdomen. One had to think of gastric ulcer and hyperchlorhydria, and possibly malaria or gastroenteritis. The pupillary reactions pointed to a syphilitic condition despite the fact that the lack of reaction to accommodation (over and above the Argyll-Robertson phenomenon) in the right pupil is not entirely typical. Accordingly, although there was no areflexia, Romberg sign, or ataxia, resort was had to the W. R. This however proved negative, in blood and spinal fluid; nor was there any globulin or excess albumin; there were 5 cells to the cmm., in the spinal fluid. We are left, accordingly, with characteristic gastric crises; Argyll-Robertson pupils, slightly irregular; and a somewhat enlarged heart.