Draw a vertical at D, intersecting fh, kg, in s and q.
The sign x was kept in the western group for the guttural spirant in E, which was written X*; but, as this spirant occurred nowhere else, the combination was often abbreviated, and X was used for X precisely as in the Italic alphabets we shall find that F =f develops out of a combination FH.
The strongest argument for the derivation from the Latin alphabet is undoubtedly the value of f attaching to P; for, as we have seen, the Greek value of this symbol is w, and its value as f arises only by abbreviation from FH.
But most remarkable is the representation of Latin F by FH.
