Psoriasis in a Negro. Presented by Dr. W. E. Abramowitz. A. G., a Negro, aged 35, born in the British West Indies, had been a resident of the United States for eleven years ; he was a butler and houseman. He stated that his great grandfather was said to have been a white man. He was from the New York Post-Graduate Clinic. The patient had had his condition for at least five years. The lesions, he stated, first appeared on the scalp, and from there gradually spread over the entire body. He complained that the lesions scaled easily and were at times pruritic. No one else in the family had been similarly affected. At the time of admission the patient presented multiple, sharply defined and circumscribed, isolated and coalesced patches with circular and serpiginous outlines. The individual lesions exhibited depigmented centers and slightly raised borders, the latter being considerably more inflamed