We must also consider that their paintings and sculptures were eminently symbolic. When one carves an explanation in hard granite it is apt to be done in shorthand, as it were. Thus, a tree meant a forest, a prisoner meant a whole army; therefore, two sculptured harpists or flute players may stand for twenty or two hundred. Athenaeus, who lived at the end of the second and beginning of the third century, A.D., speaks of orchestras of six hundred in Ptolemy Philadelphus's time (300 B.C.), and says that three hundred of the players were harpers, in which number he probably includes players on other stringed instruments, such as lutes and lyres. It is therefore to be inferred that the other three hundred played wind and percussion instruments. This is an additional reason for conjecturing that they used chords in their music; for six hundred players, not to count the singers, would hardly play entirely in unison or in octaves. The very nature of the harp is chordal, and the sculptures always depict the performer playing with both hands, the fingers being more or less outstretched. That the music must have been of a deep, sonorous character, we may gather from the great size of the harps and the thickness of their strings. As for the flutes, they also are pictured as being very long; therefore they must have been low in pitch. The reed pipes, judging from the pictures and sculptures, were no higher in pitch than our oboes, of which the highest note is D and E above the treble staff. It is claimed that so far as the harps were concerned, the music must have been strictly diatonic in character. To quote Rowbotham, "the harp, which was the foundation of the Egyptian orchestra, is an essentially non-chromatic instrument, and could therefore only play a straight up and down diatonic scale." Continuing he says, "It is plain therefore that the Egyptian harmony was purely diatonic; such a thing as modern modulation was unknown, and every piece from beginning to end was played in the same key." That this position is utterly untenable is very evident, for there was nothing to prevent the Egyptians from tuning their harps in the same order of tones and half tones as is used for our modern pianos. That this is even probable may be assumed from the scale of a flute dating back to the eighteenth or nineteenth century B.C. (1700 or 1600 B.C.), which was found in the royal tombs at Thebes, and which is now in the Florence Museum. Its scale was [G: (a a+ b c' c+' d') (a' a+' b' c'' c+'' d'') (e'') f'' f+'' g'' g+'' (a'' a+'' b'' c''' c+''' d''')] The only thing about which we may be reasonably certain in regard to Egyptian music is that, like Egyptian architecture, it must have been very massive, on account of the preponderance in the orchestra of the low tones of the stringed instruments.