Syphilis. Untreated syphilis in male Negro [comparative study of treated and untreated cases, read before annual meeting of American Medical Association, Section on Dermatology and Syphilology, Kansas City, Mo., May 11-15, 1936; by R. A. Vonderlehza, Taliaferro Clark, O. C. Wenger, and J. R. Heller, jr.].