1. Add MS 73525, ff 3r-4v Reference (shelfmark): Add MS 73525, ff 3r-4v Title: Scope & Content: Two leaves containing parts of Porphyrius's In Aristotelis Categoriasexpositio (TLG 2034.007) with marginal scholia, followed by a commentary by Michael, deacon of the Great Church, kouboukleisios and imperial clerk. Collection Area: Western Manuscripts Languages: Greek, Ancient Date Range: 12th century Extent: 2 folios
2. Burney MS 103 Reference (shelfmark): Burney MS 103 Title: Porphyrius, Commentary on Claudius Ptolemaeus' Harmonica Scope & Content: Porphyrius, Commentary on Claudius Ptolemaeus' Harmonica. Pen diagrams partly executed. Tit. Βρυεννίου εἰς τὰ ἁρμονικὰ Πτολεμαίου ὑπόμνημα. Collection Area: Western Manuscripts Languages: Greek, Ancient Date Range: 1st quarter of the 16th century Extent: 125 folios
3. Burney MS 104 Reference (shelfmark): Burney MS 104 Title: Commentary on and introduction to Ptolemy's Tetrabiblos Scope & Content: Commentary on Ptolemy's Tetrabiblos (edited by Wolf 1559), tit. Ἐξήγησις εἰς τὸν τετράβιβλον τοῦ Πτολεμαίου, ff 3r-120v. Followed (ff 121v-128v) by Porphyrius, Introductio in tetrabiblum Ptolemaei (TLG 2034.028), imperfect, expl. ἄρξει μεγάλου ἀποστελέσματος. Collection Area: Western Manuscripts Languages: Greek, Ancient Date Range: 1543 Extent: 128 folios
