1. 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