Johannis Ottoni Helbigii, Thuringi, philosophi & medicinae doctoris, Introitus in veram atque inauditam physicam : epistola ex India orientali in Europam ad celeberrimam Sacri Romani Imperii Academiam naturae Curiosorum transmissa, apertus
Johann Otto von Hellwig's 1680 Latin treatise on natural philosophy and alchemy, printed at Heidelberg for scholars of the Academia Naturae Curiosorum and readers of Rosicrucian and occult writings. The picture is a large decorative woodcut initial letter, a heavily ornamented capital with scrolling foliage and hatched shading beside lines of Latin text, showing how early modern printers set display letters into the text block.
