Book Review Clinical Practice in Infectious Diseases for Students, Practitioners and Medical Officers . By E. H. R. Harries, M.D. (Lond.), M.R.C.P., D.P.H. With a foreword by W. Allen Daley, M.D. (Lond.), F.R.C.P., D.P.H. 8°, cloth, 468 pp., with 31 illustrations, and 28 tables. Baltimore: Williams and Wilkins Company, 1940. $6.00.