On frontispiece: "THE ETIOLOGY // OF // TYPHOID FEVER // AND ITS PREVENTION // BEING THE // MILROY LECTURES // DELIVERED AT THE ROYAL COLLEGE OF PHYSICIANS // IN 1902 // BY // W. H. CORFIELD, M.A., M.D. // CONSULTING SANITARY ADVISER TO H. M. OFFICE OF WORKS, AND // HONORARY SANITARY ADVISER TO UNIVERSITY COLLEGE AND HOSPITAL // LONDON // H. K . LEWIS, 136 GOWER STREET, W. C. // 1902"