Abstract
Among the more serious diseases of the tropics, yaws or frambesia tropica is of interest not only because it is striking in appearance, easily communicable and disabling, but also because of its close resemblance in many respects to syphilis. Though often simulating syphilis both clinically and pathologically, it is a much less serious disease, as it does not attack the central nervous system or viscera and is not transmitted by heredity. It is, furthermore, much more easily eradicated by arsphenamin than is syphilis. It is with the object of discussing the prevalence of yaws in the United States and recording a case recently observed in New York that this communication has been written. REPORT OF CASE History.— L. C., aged 18 years, unmarried, a full blooded negress, born in Montserrat, British West Indies, applied for treatment at the dermatologic department of the Harlem Hospital, Nov. 30, 1921. Her parents and

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