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3
16.
From a to b--that is to say from the roots of the hair in front
to the top of the head--ought to be equal to c d;--that is from
the bottom of the nose to the meeting of the lips in the middle of
the mouth. From the inner corner of the eye m to the top of the
head a is as far as from m down to the chin s. s c f b
are all at equal distances from each other.
[
Footnote: The drawing in silver-point on bluish tinted paper--Pl.
X--which belongs to this chapter has been partly drawn over in ink
by Leonardo himself.]
3
17.
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
237
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