Abstract
The following case is of more than usual interest because of its history, the rather unusual mental symptoms and the pathologic findings. The patient, J. D., a white man, aged 20, first came under my observation on Sept. 30, 1909. Family History. —When the patient was first brought to my office, I recalled the fact that many years ago I had attended his father for an initial lesion. Disappearing from observation, the latter returned some ten years later suffering from locomotor ataxia. In the meantime he had married and had had one child, the object of our present study. The father died at 42 of bronchopneumonia. The patient's mother is living and apparently well. There were no other children and no miscarriages. Personal History. —The mother states that the patient had had no other illness save that of measles at 5 years of age. Five or six years ago he