Ockam, Guilielmus: Dialogorum libri septem adversos haereticos.  Compendium errorum Johannis papae XXII.

With additions by Jodocus Badius Ascensius.  Edited by Augustinus de Ratisbona?

[Lyons]:  Johannes Trechsel, [not before 12 Sept. 1494]
Fol. π10 a-s8 t-v10 A-O8 AA-BB6.  [10], I-CCLXXVI, [12] leaves.  Leaves 2-6 of the preliminary quire are numbered but not signed.
“The sequence of signatures strongly suggests that the two tracts here catalogued together were intended to form one whole and were printed at the same time” - BMC;  catalogued separately, however, by GW and some other authorities.   Editor tentatively identified as Augustinus de Ratisbona by Bod-inc.
ISTC io00009000;  GW 11908 + 11905;  Goff O9;  BMC  VIII 296 (IB. 41906);  Bod-inc G-313;  CIBN G-491;  BSB-Ink G-502.  

GIP number: O2
Shelf-mark: Sp Coll Bn6-d.12 (see main library entry for this item)
Bound with: The first of two incunabula bound together.   Bound with:  Ockam, Guilielmus, Decisiones VIII quaestionum super potestate summi Pontificis. Lyons:  Johannes Trechsel, 8 Oct. 1496 (O1).
Variant: BB6r, col. 2, line 34: "... erroꝛum ..." not "... errorū ..." as BMC.
Provenance: Henry Sinclair (1507/8-1565), judge and Bishop of Ross:  inscription on a1r “Hen. Sinclar”;  see Durkan & Ross, Early Scottish libraries, p. 50.
University of Glasgow:  Old Library shelfmark “K.f.3.n.6.” on π1r (title-page) matching entry in Catalogus librorum Bibliothecae Universitatis Glasguensis anno 1691 (University of Glasgow Library, MS Gen 1313);  later shelfmark “CD.6.2.” on University of Glasgow Library bookplate matching entry in A. Arthur, Catalogus impressorum librorum in Bibliotheca Universitatis Glasguensis (Glasguae: 1791).
Binding: Scotland, 17th-century speckled calf;  covers decorated with a double blind-fillet border;  rebacked in the 20th century and given new pastedowns and flyleaves;  red-edged leaves.   Size:  271 x 204 mm.
Leaf size: 264 x 196 mm.
Annotations: Early underlining on L4v.
Decoration: None.
Imperfections: None.

Woodcut from Ockam, Guilielmus: Dialogorum libri septem adversos haereticos