 He enlarged the field of ecclesiastico-historical studies by delivering special lectures on patrology, and establishing in 1890 a seminary for ecclesiastical history, in which students were to receive a scientific and methodical training in original historical research.Jungmann remained to the end of his life a professor at Leuven, declining the honour of a call to be professor of dogmatic theology in the newly founded Catholic University at Washington.He was seized with a fit of apoplexy at the burial of a colleague, and died at Leuven in 1895.