Very shortly after acquiring syphilis, the young negress began to act peculiarly. She describes herself as having a sort of nightmare, both when asleep and also when awake. For instance, she saw her dead grandmother. It appeared at first like a seraph; then it came nearer to her and seemed to fill out; and then was dressed precisely as her grandmother had been. This seraph appeared as though trying to tell her something, but she could not make out what the something was. The vision had appeared on two or three occasions. Our examination detected little beyond instability and irritability of mood with some depression. The patient readily fell to weeping. She soon made friends in the wards, however, and got on well. =Physical examination= was entirely negative but the W. R. of the blood serum was positive. The W. R. of the spinal fluid was negative, as was the gold sol reaction; there was an excess of albumin and a positive globulin test; there were seven cells per cmm. The psychiatric diagnosis of a case like that of Alice Caperson would waver between hysteria and dementia praecox. However, as for dementia praecox there are hardly any typical symptoms. There is insight into the hallucinations, which are hypnagogic. There are, however, no hysterical stigmata. The spinal fluid reaction is typical of the secondary stage of syphilis. It is commonly said that in every case of syphilis the nervous system is involved at some period, if only to the degree shown in the present case. However, such involvement tends to disappear both with and without antisyphilitic treatment, just as do the secondary skin symptoms. So far as syphilis is concerned, the prognosis under radical treatment is as good as usual. We are inclined to regard the case as one of the HYSTERICAL or PSYCHOPATHIC group and inasmuch as cases occurring in the developmental stage of a patient’s life are of fairly good general prognosis, we are inclined to regard the prognosis in this particular case as good under proper therapy and hygiene.