Zahn's encyclopedia of science. Title page of Specula Physico-Mathematico-Historica (1696), an encyclopedia of science by the German monk and author Johann Zahn (1641-1707). The text is in Latin, with the title at top, followed by a lengthy description and the author's name at lower centre. At bottom are the publication details, including the printer (Lochner), with the publication date in Roman numerals on the last line.