Begin. [IOhannes de giglis ...] Dilecto nobis in xpristo. Prefatus sa�ctissimus in xpristo pr� et dn�s n�r dn�s. Sixtus diuina prouide�cia papa ... Dat' die mensis. Anno dn�i Millesimo quadringentesimo octuagesimo primo, etc. [An indulgence to contributors to the defence of Christendom against the Turks. The singular issue, intended to be filled up for a single contributor.] B.L. On vellum