ɪn nˈaɪntiːnhˈʌndɹɪd sˈɛvən hiː bɪkˌeɪm ɐn ɐdˈɪʃənəl jˌuːnɪvˈɜːsᵻɾi dˈɛmənstɹˌeɪɾɚɹ ɪn fˌɪzɪˈɑːlədʒi, ænd ɪn nˈaɪntiːnhˈʌndɹɪd ˈeɪt ɐ lˈɛktʃɚɹɚɹ ɪn nˈætʃɚɹəl sˈaɪənsᵻz.
In 1907 he became an additional university demonstrator in physiology, and in 1908 a lecturer in natural sciences.