Encephalitis Lethargica—Its Sequel˦ and Treatment. By Constantine von Economo, Professor of Psychiatry and Neurology, University of Vienna. Translated and adapted by K.O. Newman, M.D., Pathologist, Oxford County and City Mental Hospital, London: Humphrey Milford, Oxford University Press, 1931. pp.200, with 21 illustrations. Price 18s. net.