. Now the ancient diagrams, which divided every tone into four parts, must have had a character for c♯*, or the note three-quarters of a tone above c. Naturally this would be the remaining position of
, namely
. Again, we have seen that when the interval between two notes on the diatonic scale is only a semitone, the result of the notation is to produce a certain number of duplicates, so to speak. Thus:
stands for b, and therefore
for c: but c is a note of the original scale, and as such is written
