urn:cts:latinLit:phi1056.phi001.perseus-lat2, Book 5, Chapter 5

Ita uti in minore theatro supra scriptum est. in mediana autem prima in extremis cornibus ad chromaticen hyperbolaeon habentia sonitum ponantur, in secundis ab his diatessaron ad chromaticen diezeugmenon, in tertiis ad chromaticen synhemmenon, quartis diatessaron ad chromaticen meson, quintis diatessaron ad chromaticen hypaton, sextis ad paramesen, quod et ad chromaticen hyperbolaeon diapente et ad chromaticen synhemmenon diatessaron habet consonantiae communitatem.