Heymann was - until 1938, first as acting - successor Ernst Rabel, who had been forced by the Nazi regime to resign his post.
hˈeɪmən wʌz ʌntˈɪl nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi ˈeɪt, fˈɜːst æz ˈæktɪŋ səksˈɛsɚɹ ˈɜːnst ɹˈeɪbəl, hˌuː hɐdbɪn fˈoːɹst baɪ ðə nˈɑːtsi ɹeɪʒˈiːm tə ɹɪzˈaɪn hɪz pˈoʊst.