by J.F. Halls Dally, M.A., M.D., Cantab., Member of the Royal College of Physicians of London, Senior Physician to the Mount Vernon Hospital and to the St. Marylebone General Dispensary, Director of the Marylebone Rheumatism Supervisory Centre for Children, Consulting Physician to the Shriners' Hospital, Montreal, and member of the Advisory Pathological Board, Consulting Physician to the Philanthropic Society's School, Redhill.