Jackson (1895–1977); Arthur Tansley (1871–1955), and Albert Hirst (1887–1974). Cancer In February 1923, Freud detected a leukoplakia, a benign growth associated with heavy smoking, on his mouth. He initially kept this secret, but in April 1923 he informed Ernest Jones, telling him that the growth had been removed. Freud consulted the dermatologist Maximilian Steiner, who advised him to quit smoking but lied about the growth's seriousness, minimizing its importance. Freud later saw Felix Deutsch, who saw that the growth was cancerous; he identified it to Freud using the euphemism "a bad leukoplakia" instead of the technical diagnosis epithelioma. Deutsch advised Freud to stop smoking and have the growth excised. Freud was treated by Marcus Hajek, a rhinologist whose competence he had previously questioned. Hajek performed an unnecessary cosmetic surgery in his clinic's outpatient department. Freud bled during and after the operation, and may narrowly have escaped death. Freud subsequently saw Deutsch again. Deutsch saw that further surgery would be required, but did not tell Freud he had cancer because he was worried that Freud might wish to commit suicide. Escape from Nazism In January 1933, the Nazi Party took control of Germany, and Freud's books were prominent among those they burned and destroyed. Freud remarked to Ernest Jones: "What progress we are making. In the Middle Ages they would have burned me. Now, they are content with burning my books." Freud continued to underestimate the growing Nazi threat and remained determined to stay in Vienna, even following the Anschluss of 13 March 1938, in which Nazi Germany annexed Austria, and the outbreaks of violent antisemitism that ensued. Jones, the then president of the International Psychoanalytical Association (IPA), flew into Vienna from London via Prague on 15 March determined to get Freud to change his mind and seek exile in Britain. This prospect and the shock of the arrest and interrogation of Anna Freud by the Gestapo finally convinced Freud it was time to leave Austria. Jones left for London the following week with a list provided by Freud of the party of émigrés for whom immigration permits would be required. Back in London, Jones used his personal acquaintance with the Home Secretary, Sir Samuel Hoare, to expedite the granting of permits. There were seventeen in all and work permits were provided where relevant. Jones also used his influence in scientific circles, persuading the president of the Royal Society, Sir William