 Du Halde, "Description de la Chine", The Hague, 1736, I, pref., xliii; and Richthofen, "China," Berlin, 1877, I, 682).Hinderer, however, was not only a man of science, but also a missionary who for forty years laboured as an apostle and by his zeal and efficiency achieved substantial results.He was twice placed at the head of the mission as canonical visitor.