The special tests above referred to are the electric sensory threshold tests of E. G. Martin. =Character change: neurosyphilis.= =Case 95.= Joseph Wilson offered a very serious social problem. He was the father of two children, and his wife was pregnant at the time of his admission to the Psychopathic Hospital. He was a husky-looking man of 33 years of age, but for the past four years he had been deteriorating in his work; he had been drinking heavily, and finally had stolen to obtain money for liquor. It was on account of his alcoholism and delinquency, which were taken as an indication of change of character, that he was sent to the hospital. Examination on his arrival disclosed at once that there was more to the case than alcoholism, for the =neurological examination= showed that the pupils were irregular, the right being larger than the left, both reacting sluggishly to light, and there was an inequality in the reaction of the two eyes, the left being better than the right. The tendon reflexes were exaggerated, with ankle clonus on both sides, more marked on the right. There was also a marked speech defect. Otherwise the =physical examination= showed nothing of importance. The W. R. of the blood and spinal fluid was strongly positive. The globulin test was strongly positive, the albumin was markedly increased, there were 74 cells per cmm., and a gold sol reaction of the “paretic” type. A formal =mental examination= did not show very much of consequence; his memory showed no marked impairment, he was not deluded or hallucinated, and he had a pretty good insight into his failings. However, he was somewhat childish, and his irritability was quite marked. Were one to rely upon the mental signs alone, it is probable that a diagnosis of chronic alcoholism with deterioration would be made; but in the presence of the physical findings and the laboratory tests, the diagnosis of neurosyphilis had to be given. It is obvious that, while the patient was suffering from a progressive brain disease, and while he did show mental symptoms, there was not sufficient ground on which to commit him, and therefore he had to be turned out into the community. As a matter of fact, he was not prosecuted on account of his theft, because, although legally responsible, it was felt that his disease was at the basis of the character change which had led him into difficulties. Further developments of his relations with society had to be considered, however. It was possible to get him to discontinue the use of alcohol altogether, and for nearly a year he has taken no alcoholic liquor and has been self-supporting. However, his irritability has been very great, making it very difficult for his wife to live with him, and causing his sister to break off all relations with him.