Two strips, likely from quire guards, visible between just inside the front flyleaf (II) and the back flyleaf. The flyleaves themselves are made from discarded sheets from the same printing. The strips come from a two-column 12th-century Breviary, and contain chants and readings, which in the first strip (II) can be easily identified as pertaining to Palm Sunday:

IIr: Ier. 20:8, Conclusit vias (006306), Ier. 7:1
IIv: Opprobrium factus (007325), Beda Hom. evangelii, l. 2, hom. 3 (Ante qu[inque dies]... [sa]nguine[ redempturus ante quinque dies], Synagoga populorum (007747), continuation of Bede.

The Host Volume was in the abbey library of Rheinau.

Host Volume Information:
Author: Molitoris, Johannes [ca. 15.Jh]
Title: Summa theologica / Antoninus Florentinus ; mit Tabula von Johannes MolitorisImprint: Strassburg : Johann Grüninger, 1496
Extent: 4 Teile ; 32 cm (2°) [vol. 1: Repertorium et prima pars]
(HC 1249; GW 2192)