We may set the total duration of symptoms in the case of James McDevitt at a little over a year; nor is there any evidence of previous or prodromal symptoms beyond a total period of about 15 months, unless we may regard his leaving the General Electric Works to become a bartender some nine years before death, as a symptomatic change of character. In any event, it is of note that the =autopsy= showed singularly few lesions. Death was due doubtless to complications following decubitus, and there was a slight acute splenitis. The kidneys showed some parenchymal change. The aorta showed many patches of sclerosis, with calcification or ulceration throughout its length. These changes were not characteristic of syphilitic disease. There was considerable coronary arteriosclerosis and a slight mitral valvular sclerosis. There was a brown atrophy of the heart muscle, somewhat surprising in a man of 34 years. The =brain= was practically normal, weighed 1200 grams, and showed convolutions normal in size, relation, and arrangement. There was no sclerosis grossly evident in the blood vessels. The pia mater appeared to contain a considerable excess of clear fluid. The calvarium was of normal thickness and showed diploë and the dura mater failed to show adhesions. There were no macroscopic signs of lesion in the spinal cord. =Microscopically=, the lymphocytosis, plasmocytosis, and phagocytosis of the perivascular spaces, (relative?) increase in blood vessels, the gliosis, and evidence of nerve cell destruction, taken together warranted the diagnosis of PARETIC NEUROSYPHILIS. It was plain that the nerve cell destruction was best marked in the _inner layers of the cortex_. The microscopic study of the spinal cord showed that there was very possibly a slight sclerosis of the posterior columns in the lumbar region, but this was so slight that it could hardly be noted in the myelin sheath stains (Weigert). Very sharply marked, on the other hand, were the _bilateral pyramidal tract lesions_ in the lumbar and thoracic regions, less marked at the cervical levels.