§ 28. Traces of the Species in the Notation.
Before leaving this part of the subject it will be well to notice the attempt which Westphal makes to connect the species of the Octave with the form of the musical notation.
The basis of the notation, as has been explained ([p. 69]), is formed by two Diatonic octaves, denoted by the letters of the alphabet from α to ν, as follows:
| η | ι | ε | λ | γ | μ | Ϝ | θ | κ | δ | λ | β | ν | ζ | α |
| a | b | c | d | e | f | g | a | b | c | d | e | f | g | a |
In this scale, as has been pointed out ([p. 71]), the notes which are at the distance of an octave from each other are always expressed by two successive letters of the alphabet. Thus we find—
| β | - | γ | is the octave | e - e, | the Dorian species. |
| δ | - | ε | " " | c - c, | the Lydian species. |
| Ϝ | - | ζ | " " | g - g, | the Hypo-phrygian species. |
| η | - | θ | " " | a - a, | the Hypo-dorian species. |
Westphal adopts the theory of Boeckh (as to which [see p. 11]) that the Hypo-phrygian and Hypo-dorian species answered to the ancient Ionian and Aeolian modes. On this assumption he argues that the order of the pairs of letters representing the species agrees with the order of the Modes in the historical development of Greek music. For the priority of Dorian, Ionian, and Aeolian he appeals to the authority of Heraclides Ponticus, quoted above ([p. 9]). The Lydian, he supposes, was interposed in the second place on account of its importance in education,—recognised, as we have seen, by Aristotle in the Politics (viii. 7 ad fin.). Hence he regards the notation as confirming his theory of the nature and history of the Modes.
The weakness of this reasoning is manifold. Granting that the Hypo-dorian and Hypo-phrygian answer to the old Aeolian and Ionian respectively, we have to ask what is the nature of the priority which Heraclides Ponticus claims for his three modes, and what is the value of his testimony. What he says is, in substance, that these are the only kinds of music that are truly Hellenic, and worthy of the name of modes (harmoniai). It can hardly be thought that this is a criticism likely to have weighed with the inventor of the notation. But if it did, why did he give an equally prominent place to Lydian, one of the modes which Heraclides condemned? In fact, the introduction of Lydian goes far to show that the coincidence—such as it is—with the views of Heraclides is mere accident. Apart, however, from these difficulties, there are at least two considerations which seem fatal to Westphal's theory: