Handbook of the History of Logic: - Fordham University Faculty

Logic at the Turn of the Twelfth Century 69
a commentary on On Cagegorical Syllogisms (SC6),a partial commentary on On
Hypothetical Syllogisms (SH6), and some logical notes.
Almost all of this material, where it has not been published, has been transcribed
by Yukio Iwakuma.
(Commentaries in Cambridge MS Fitzwilliam Museum, MacClean 165, P6 and
C6: these may belong to this group in principle, but they have been hardly studied.)
The commentaries listed here in MS Paris BN 13368 (P5, H4) have been considered
to be Abelard’s early works, but this attribution has now been strongly
questioned [Cameron, Martin and Marenbon, Forthcoming]. They are related to
the commentaries in MS Munich clm 14779, and H5 seems to preserve a fuller
version of the same lectures as H4, including personal references that have been
interpreted, but questionably, as relating to Abelard [Marenbon, 1997a, Appendix;
Iwakuma, 1999, 94-7]. Further, and even more doubtful attributions have been
made. Iwakuma [1992, 58-62] once attributed P7 to Roscelin. Luscombe [1962,
225-34] argued that it was by a pupil of Abelard’s. Iwakuma also [1992, 61] suggested
that the other commentaries and logical notes in this section of MS Munich
clm 14779 are probably from the same school and suggests that some might be by
Roscelin. It is these supposed links with Abelard — usually, it has been presumed,
the young Abelard, or his teacher, that have provided the reason for dating the
commentaries in the Paris and Munich manuscripts to the very first years on the
twelfth century. Their dating now is uncertain, and C5, at least, could well be
from the 1120s or later. The Pommersfelden material must, however, be this early,
since the manuscript is dated to the end of the eleventh/ beginning of the twelfth
century.
Composite commentaries
There is a group of what might be called ‘standard’ composite commentaries:
commentaries that, unusually, are preserved in more than one manuscript, often
in different versions (cf. [Iwakuma, 1999, 101-2; 2004a]):
On the Isagoge: P3 (3 MSS; consisting of an earliest-preserved version and two
independent revisions) [Iwakuma, Forthcoming-C].
On the Categories: C8 complex: C8, C7 and C14 (6 MSS; consisting of an
earliest-preserved version and four revisions falling into two groups). This material
has been transcribed and studied by Yukio Iwakuma.
On On Interpretation: H11 and H9 (3 MSS; H9 is a version of H11, but considerably
different). (Edition of H9 by Onno Kneepkens in progress; extracts and
information on in [Kneepkens 1994; 2003])
On On Division: D8 (= MS Paris BN 13368, f. 191rb-4vb; MS Assisi 573, f.
68ra-78vb)
On On Topical differentiae: B8 (3 MSS); B10 (transcribed by Yukio Iwakuma)
6. On On Hypothetical Syllogisms: SH3 (= MS Munich clm 14458, f. 59-82 ;
MS Orleans 266, pp. 78b-118a; MS Munich clm 14779, f. 66r-7r) (see [Iwakuma,