Aristoxenus.
The topoi or keys

 16 § 11. Names of keys.
The prefix Hypo- —the term tonos  19 § 12. Plutarch's Dialogue on Music.
The Platonic modes—Lydian—Mixo-lydian and Syntono-lydian—
the Mixo-lydian octave—the keys of Sacadas— tonos and harmonia  20 § 13. Modes employed on different instruments.
Modes on wind-instruments—on the water-organ—
on the cithara—on the flute  27 § 14. Recapitulation.
Equivalence of harmonia and tonos  28 § 15. The Systems of Greek music.
The musical System (systêma emmeles)  30

§ 16. The standard Octachord System. The scale in Aristotle and Aristoxenus	31
§ 17. Earlier Heptachord Scales. Seven-stringed scales in the Problems—Nicomachus	33
§ 18. The Perfect System. The Greater and Lesser Perfect Systems— Aristoxenus—enlargement of the scale—Timotheus— Pronomus—the Proslambanomenos—the Hyperhypatê	35
§ 19. Relation of System and Key. The standard System and the 'modes'— the multiplicity of harmoniai	40
§ 20. Tonality of the Greek musical scale. The Mesê as a key-note—the close on the Hypatê— archê in the Metaphysics	42
§ 21. The Species of a Scale. The seven Species (schêmata, eidê) of the Octave—connexion with the Modes	47

§ 22. The Scales as treated by Aristoxenus. Advance made by Aristoxenus—diagrams of the Enharmonic genus—reference in Plato's Republic—Aristides Quintilianus—the Philebus	48
§ 23. The Seven Species. Aristoxenus—the Introductio Harmonica	56
§ 24. Relation of the Species to the Keys. Use of the names Dorian, &c.—treatment of musical scales in Aristoxenus—Species in the different genera	58
§ 25. The Ethos of Music. Regions of the voice—branches of lyrical poetry— kinds of ethos	62
§ 26. The Ethos of the Genera and Species. Ethos depending on pitch—on the genus	66
§ 27. The Musical Notation. The instrumental notes—original form and date	67
§ 28. Traces of the Species in the Notation. Westphal's theory	75
§ 29. Ptolemy's Scheme of Modes. Reduction of the Modes to seven—nomenclature according to value and according to position	78
§ 30. Nomenclature by Position. The term thesis in Aristoxenus— in the Aristotelian Problems	81
§ 31. Scales of the Lyre and Cithara. The scales on the lyre—on the cithara (viz. tritai, tropoi, parypatai, lydia, hypertropa, iastiaioliaia)	83
§ 32. Remains of Greek Music. The hymns of Dionysius and Mesomedes—instrumental passages in the Anonymus—Mr. Ramsay's inscription— melody and accent—fragment of the Orestes	87
§ 33. Modes of Aristides Quintilianus. The six Modes of Plato's Republic	public@vhost@g@gutenberg@html@files@40288@[email protected]#Page_94" class="pginternal"