Figure 2. "A strange thing," John Ferrar's (?) annotation and personal mark in Gerhard Mercator, Atlas; or, A geographicke description of the world (London, 1635), p. 862 (detail). JCB call number Z M533 1635 1-SIZE

Detail showing the curving script Virginia Ferrar inserted into the fabric of the insect's form.

Janice Neri and Danielle Skeehan, "The Mystery of the Silk Worm: Conversations in the Reading Room and Beyond," I Found it at the JCB, Online Journal of the John Carter Brown Library, August 2012.