Abstract
Albrecht Dürer's masterly engraving of St. Jerome in His Study (Fig. 1), dated 1514, evokes an ideal of contemplative solitude which bore a special appeal for humanists of the Renaissance. The venerable church father is bent in concentration in the warm serenity of his study, accompanied by a lion, his legendary companion. His monastic cell, fully appointed with the attributes of a scholarly life, is cast in a rigidly constructed mathematical perspective which conveys an image of exacting intellectual and spiritual discipline.1 Here nothing appears to be out of place, with the exception of a single detail which, despite its insistent obtrusiveness, has gone almost without mention in analyses of the print.