Rosetta 19.

Touton d' outos aforismenon te kai prodiirimenon peri melous an eii imin peirateon upotiposai ti pot' estin i fusis autou. Oti men oun diastimatikin en auto dei tin tis fonis kinisin einai proeiritai, oste tou ge logodous kehoristai tauti to mousikon melos* legetai gar di kai logodes ti melos, to sugkeimenon ek ton prosodion di kai logodes ti melos, to sugkeimenon ek ton prosodion ton en tois onomasin* fusikon gar to epiteinein kai anienai en to dialegesthai. Epei d' ou monon ek diastimaton te kai fthongon sunestanai dei to irmosmenon melos, alla prosdeitai sunestanai dei to irmosmenon melos, alla prosdeitai suntheseos tinos kai ou tis tihousis - dilon gar os to g' ek diastimaton te kai fthoggon sunestanai koinon estin, uparhei gar kai to anarmosto -, ost' epeidi touth' outos ehei, to megiston meros jai pleistin ehon ropin eis tin orthos gignomenon sustasin tou melous (to) peri tin sunthessin katholou kai tin tautis idiotita upolipteon einai. Shedon di faneron, oti tou men epi tis lexeos gignomenou melous to diastimatiki hristhai ti tis fonis kinisei dioisei to mousikon melos, tou d' anarmostou kai diimartimenou ti tis suntheseos diafora tis ton asuntheton diastimaton peri is en tois epeita deixthisetai tis estin autis o tropos. plin epi tosouton g' eiristho katholou kai nun, oti pollas ehontos diaforas tou irmosmenou kata tin ton diastimaton synthesin, omos esti ti toiouton o kata pantos irmosmenou rithisetai en te kai tauton,toiautin ehon dunamin oian autin anairoumenin anarein to irmosmenon. Aploun d' estai proiousis tis pragmateias. To men oun mousikon melos apo ton allon outos aforistho. upolipteon de ton eirimenon aforismon tupo eiristhai outos os midepo ton kath' ekasta tetheorimenon.
Ehomenon d' an eii ton eirimenon to katholou legomenon melos dielein eis osa fainetai geni diaireisthai. Fainetai d' eis tria* pan gar to lamvanomenon melos ton eis tauto irmosmenon itoi diatonon estin i hromatikon i enarmonion. Proton men oun kai presbitaton auton theteon to diatonon, proton gar autou i tou anthropou fisis prostughanei, deuteron de to hromatikon, triton de kai anotaton to enarmonion, tekeutaio gar auto kai molis meta pollou ponon sunethizetai i aisthisis.

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~diastimatikin kinisin
~logodous
~logodes melos,
~epiteinein
~anienai
~irmosmenon melos
~asuntheton
~geni
~diatonon (Proton men oun kai presbitaton auton theteon to diatonon, proton gar autou i tou anthropou fisis prostughanei)
~hromatikon (Deuteron)
~enarmonion. (Triton de kai anotaton to enarmonion, teleutaio gar auto kai molis meta pollou ponon sunethizetai i aisthisis.)