Boethius, De institutione arithmetica libri duo · De institutione musica libri quinque, ed. Gottfried Friedlein (Leipzig: Teubner, 1867) — read from page images, with the critical apparatus separated from the text
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INST. MUR. I, 20. 211 est, nele proxima accedit et longe ab hypatis ultimis di- stat nec proprium retinet locum, aliud unum tetrachor- dum adiunctum est super neten diezeugmenon, quae quoniam supervadebant acumine netas superius colloca- tas, omne illud: tetrachordum hyperboleon vocatum est 5 hoc modo: — Hypate hypaton | ———— Parhypate hypaton - —— ——, . Lichanos hypaton venere Hypate meson 10 —— —i Parhypate meson ———] Lichanos meson — À Mese ———— | Paramese i ——— — —| Trite diezeugmenon 15 Enter Paranete diezeugmenon | —————4 . Nete diezeugmenon --— Trite hyperboleon mm Paranete hyperboleon | —— ———| . Nete hyperboleon. $ Sed quoniam rursus mese non erat loco media sed magis hypatis accedebat, idcirco super hypatas hypaton addita est una chorda, quae dicitur proslambanomenos — ab aliquibus autem prosmelodos dicitur — tonum integrum distans ab ea, quae est hypate hypaton. Et ipsa quidem, »5 id est proslambanomenos a mese octava est, resonans cum ea diapason symphoniam. Eademque ad lichanon hypaton resonat diatessaron, ad quartam scilicet; quae lichanos
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