Astronomer and Assyriologist, born Neuenkirchen, Westphalia, 1835; died Exaeten, Holland, 1894. He was one of a band of Jesuits who went to Ecuador at the request of Garcia Moreno, and became professor of mathematics at the Polytechnicum of Quito. After Moreno's assassination he went to Holland, where he taught astronomy and mathematics. In 1882 appeared "Der Kreislauf im Kosmos," a refutation of Kant and Laplace. He discovered the key to the Babylonian astronomical tables, publishing the results of his investigations in 1899.