Hence the misdescription of the treble and bass clefs as “immovable,” the C clef as “movable.”
The C clef as used in its various positions is shown in Figs. 7, 8, and 9.
The C clef, therefore, appears to move, being sometimes on the third and sometimes on the fourth line.
Ten′or-clef, the C clef, placed on the fourth line; Ten′orist.
Besides, the sign would have easily become confused with the C clef .
The C clef is on that line which has an oblique or straight stroke, or pot-hook, above and below.