He summarized his experiences in the study Persien: Das Land und seine Bewohner (1865), which belongs to the outstanding ethnographic works about 19th-century Iran.
U longoloxe vulavisisi byakwe eka buku leyi nge Fiji and the Fijians (1858), ku nga rungula leri a ri hlamusela mahanyelo ya vanhu va le Fiji hi va-1800.