He published numerous studies in the journals of learned societies and wrote several books during his administrative career but proposed a formal linguistic survey at the Oriental Congress in 1886 at Vienna.
hiː pˈʌblɪʃt nˈuːmɚɹəs stˈʌdiz ɪnðə dʒˈɜːnəlz ʌv lˈɜːnd səsˈaɪəɾiz ænd ɹˈoʊt sˈɛvɹəl bˈʊks dˈʊɹɹɪŋ hɪz ɐdmˈɪnɪstɹˌeɪɾɪv kɚɹˈɪɹ bˌʌt pɹəpˈoʊzd ɐ fˈɔːɹməl lɪŋɡwˈɪstɪk sˈɜːveɪ æt ðɪ ˌoːɹɪˈɛntəl kˈɑːŋɡɹəs ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd ˈeɪɾi sˈɪks æt vɪˈɛnə.