The Old Catholic churches have branches—both official and unofficial—all over the world. They constitute one of the most interesting and diverse movements in Christian history, a movement worthy of greater visibility and academic attention. Here is the classic translation of the Roman Catholic Mass adapted for Old Catholic use in English parishes by the first Old Catholic bishop consecrated for missionary work in the British Isles, Arnold Harris Mathew. Long out of print, this is an exact copy of the original 1909 edition, available once more from Apocryphile Press.