 He included in it engravings by Martin Caldenbach, a pupil of Albrecht Dürer.Thereby "Der Rosengarten" gave for the first time printed illustrations of the birthing chair, the lying-in chamber, and the positions of the fetus in utero.Alongside his direct observation of midwifery at Worms, Rösslin incorporated information gleaned from writers of antiquity such as Muscio and Soranus of Ephesus.