From the top of the head to the bottom of the chin is 1/9, and from
the roots of the hair to the chin is 1/9 of the distance from the
roots of the hair to the ground. The greatest width of the face is
equal to the space between the mouth and the roots of the hair and
is 1/12 of the whole height. From the top of the ear to the top of
the head is equal to the distance from the bottom of the chin to the
lachrymatory duct of the eye; and also equal to the distance from
the angle of the chin to that of the jaw; that is the 1/16 of the
whole. The small cartilage which projects over the opening of the
ear towards the nose is half-way between the nape and the eyebrow;
the thickness of the neck in profile is equal to the space between
the chin and the eyes, and to the space between the chin and the
jaw, and it is 1/18 of the height of the man.