From this page the volume turns to Johannes de Muris, and the join between this issue and musica:4 is direct rather than thematic: his Musica speculativa (1323) is an abridgement of Boethius's De institutione musica, made for teaching, and it is by this route that Boethius reached the fourteenth-century university in a form short enough to lecture from. Boethius's name appears across these pages for that reason. The pairing held in this estate is therefore unusually complete: musica:4 is the source, musica:3 contains its most successful reduction, and both are now readable page by page. It is worth noticing what the reduction costs — an abridgement made for the classroom keeps the propositions and sheds the argument, and a reader who knows Boethius only through de Muris has the results of the Institutio without the demonstrations that make them binding.
Medieval treatises on music — Marchettus of Padua (Lucidarium, Pomerium), Johannes de Muris (Musica speculativa), Adam of Fulda, Elias Salomonis — Gerbert, Scriptores vol. 3 (St Blasien, 1784), re-read from the Bayerische Staatsbibliothek scan
The original is shown on its own: no English is held for this issue yet.
1 E " | "meae. ... ap (0 MEER ERR E 0 | E - IOANNIS de MURIS : r TRACTATUS DE MUSICA. Ao MONITU M. | | » .. Celeberrimi buius autoris, varia ops[cula mu[ica e diverfis codicibus eruta bic à —— 4Wüftiuus. — Primum eff Summa Magiftri Ioaxsis de Munis. foluta € ligata oratio- .. "e compofita ex /MS. Cod. Parifienfi, recens nobis Parifüs transmiffo. Huic fubiun- E — - gitur ibi De numeris, qui muf(icas retinent confonantias, fecundum ProLowzuM | . de Parifiis, €9 alius tra&íatus auonymi de proportionibus poff mortem loannis, ut - | . videtur ,. fcriptus. ^ 3 Sequitur ex eodem codice eiusdem Mufica theorica, quam etiam im duobus codi- —.. eibus Biblioth. Caf. Pindob. reperimus Pbilof. CCXCIF. €8. CXII. itemque in Ber- | meuf, in quo infcribitur loannis de Muris Mufica fpeculativa, a Conrado Norico |. artium liberalium academie Lipfienfis Magiítro ordinata atque correcta, quz multis .- temporibus fuit obnubilata, fummo labore & diligentia. Iz Zindob. vero priore —.. dta ad calcem buius mufice notatur: Finis mufices a Conrado Norico artium libera- . lium academie Lipfienfis magiftro corroborata, firmataque: cui laudes, qui nos | reducere poteít ad fan&a fanctorum. Anno gratie 1503. fole in 20. gradum A- - - quarii gradiente in fupradicto gymnafio ledia ab eodem. Alia efl, que Cod. CXIII. —. PPbilof. bibl. Pindob. notatur, Mufica loannis de Muris, qua appellatur mufica ru- — ^ —— fticorum Parifienfium cantum neícientium in ecclefiis Dei filentium. — /z Parifienfi bac folum in fiue mufice tbeorica, quam edimus, motantur: Explicit mufica fpe- —. culativa fecundum Boetium per magiftrum Ioannem de Muris abbreviata. Parifiis in Sorbona anno Dni 1323. Ubi nibil de Conrado Norico duobus fere feculis iuniore, — — £8 tamen ad verbum fere convenit Parifienfis cum Bernenfi, uterque tamen in ver- — — bis faltem paffim diftrepat a Pindobonenfibus , qui me ipfi quidem iuter fe femper ... onveniunt, Que difcrepantia inde forte fuit orta , quod loannis mu[ica a Conra- | - do aut fcripto aliquoties, aut oretenus tantum fuerit explicata, atque ipfa explicatio - warie ab auditoribus in chartam relata, . Eamdem loaunis de /Muris mulicam multo aliis breviorem, E9 quafi in compendio | ... exhibent alii codices /M[f. Pindobonenfis , itemque Mellicenfis im Aufflria: unde mobis couieura efl, illam ipfam genuinam effe €9 primigeniam loannis de Muris fpe- |; culativam muficam , illam vero in cateris codicibus fufiorem a Conrado Norico e[Je interpolatam atque latius explicatam. - Quidquid fit, nos utramque bic adponendam - : duxiimus , breviorem primo ex ZMelliceufi , dein prolixiorem quoque ex Parifieuf., ... wotabilioribus ceterorum codicum difcrepantiis ;3 calcem paginarum adnotatis. , a 3 "n