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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p. 3227. -DCCCCXVI., fient -II- DCCCCXCIIILI- Haec erit -EE- trite hyperboleon enarmonios. Descriptum est igitur secun- dum tria genera tetrachordum, quod est hyperboleon, cuius formam subter adiecimus. DD. FF. KK. LL. nete diez. — trite hyperb. paran, hyperb. nete hyperb. | diatonos diatonos | IH. LXXII. If. DCCCCXVI. II, DXCII. TI. CCCIHII. 8 0 0 | T T T HH. nete diez, tite hyperb. paran, hyperb. nete hyperb. | chrom. chrom. | IELXXIL Il. DCCCC. Il. DCC, 1t. CCCniT. s XVI. s XXXVI. s 5 5 T T T T T / EE. nete diez. trite paran.hyperb. nete hyperb. | h. enarm. enarmon. | Ill, IL.DCCCC. 1I. DCCCC. Ti. CCCIIII. LXXII. XCIIII. XVI. 0 0 21 Ratio superius digestae descriptionis. VII. Tria igitur tetrachorda tali nobis ratione descri- pta sunt. Tetrachordum enim omne diatessaron resonat consonantiam. Igitur nete hvperboleon et nete diezeugme- ?; non in tribus generibus, id est vel in diatono vel in chro- mate vel in enarmonio, diatessaron continet symphoniam. Diatessaron autem consonantia constat duobus tonis et
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