Autor von
Ishmael: or, A Natural History of Islamism (1859).
English Biblical Criticism, and the Authorship of the Pentateuch, from a German Point
of View (2d ed. 1864).
Genesis and Science, or, The First Leaves of the Bible (2d ed. 1875).
"Der Islam nach Geschichte, Charakter und Beziehung zum Christenthum", Gütersloh :
Bertelsmann, 1878.
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