William Durandus, Speculum iudiciale
Mammoth Folios of the Speculum Iudiciale by William Durandus, Bishop of Mende. Two folios on vellum. Italy, probably Bologna, ca. 1350: 437 mm x 280 mm (justification 340 mm x 202 mm). Double column, 75 lines. Decoration: one folio has a four-line colored initial I and two two-line initials in blue with red penwork; both have alternating red and blue pilcrows; rubricated. Text: Both from Book 2 of the Speculum Iudiciale, completed ca. 1271 and revised ca. 1291. Among the most important and innovative explications of canon and civil law ever written, William’s treatise became a staple of the legal profession for centuries.