ink by Leonardo himself.]
317.
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.
318.
a b, c d, e f, g h, i k are equal to each other in size excepting that d f is accidental. [Footnote: See Pl. XI.]
Proportions of the head seen in front (319-321).
319.
a n o f are equal to the mouth.
a c and a f are equal to the space between one eye and the other.
n m o f q r are equal to half the width of the eye lids, that is from the inner [lachrymatory] corner of the eye to its outer corner; and in like manner the division between the chin and the mouth; and in the same way the narrowest part of the nose between the eyes. And these spaces, each in itself, is the 19th part of the head, n o is equal to the length of the eye or of the space between the eyes.
m c is 1/3 of n m measuring from the outer corner of the eyelids to the letter c. b s will be equal to the width of the nostril. [Footnote: See Pl. XII.]
320.
The distance between the centres of the pupils of the eyes is 1/3 of the face. The space between the outer corners of the eyes, that
is where the eye ends in the eye socket which contains it, thus the outer corners, is half the face.
The greatest width of the face at the line of the eyes is equal to the distance from the roots of the hair in front to the parting of the
lips.
[Footnote: There are, with this section, two sketches of eyes, not reproduced here.]
321.
The nose will make a double square; that is the width of the nose at the nostrils goes twice into the length from the tip of the nose to the eyebrows. And, in the same way, in profile the distance from the extreme side of the nostril where it joins the cheek to the tip of the nose is equal to the width of the nose in front from one nostril to the other. If you divide the whole length of the nose--that is from the tip to the insertion of the eyebrows, into 4 equal parts, you will find that one of these parts extends from the tip of the
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nostrils to the base of the nose, and the upper division lies between the inner corner of the eye and the insertion of the eyebrows;
and the two middle parts [together] are equal to the length of the eye from the inner to the outer corner.
[Footnote: The two bottom sketches on Pl. VII, No. 4 face the six lines of this section,--With regard to the proportions of the head in profile see No. 312.]
322.
The great toe is the sixth part of the foot, taking the measure in profile, on the inside of the foot, from where this toe springs from the ball of the sole of the foot to its tip a b; and it is equal to the distance from the mouth to the bottom of the chin. If you draw the foot in profile from the outside, make the little toe begin at three quarters of the length of the foot, and you will find the same distance from the insertion of this toe as to the farthest prominence of the great toe.
323.
For each man respectively the distance between a b is equal to c d.
324.
Relative proportion of the hand and foot.
The foot is as much longer than the hand as the thickness of the arm at the wrist where it is thinnest seen facing.
Again, you will find that the foot is as much longer than the hand as the space between the inner angle of the little toe to the last
projection of the big toe, if you measure along the length of the foot.
The palm of the hand without the fingers goes twice into the length of the foot without the toes.
If you hold your hand with the fingers straight out and close together you will find it to be of the same width as the widest part of
the foot, that is where it is joined onto the toes.
And if you measure from the prominence of the inner ancle to the end of the great toe you will find this measure to be as long as
the whole hand.
From the top angle of the foot to the insertion of the toes is equal to the hand from wrist joint to the tip of the thumb.
The smallest width of the hand is equal to the smallest width of the foot between its joint into the leg and the insertion of the toes. The width of the heel at the lower part is equal to that of the arm where it joins the hand; and also to the leg where it is thinnest
when viewed in front.
The length of the longest toe, from its first division from the great toe to its tip is the fourth of the foot from the centre of the ancle bone to the tip, and it is equal to the width of the mouth. The distance between the mouth and the chin is equal to that of the knuckles and of the three middle fingers and to the length of their first joints if the hand is spread, and equal to the distance from the joint of the thumb to the outset of the nails, that is the fourth part of the hand and of the face.
The space between the extreme poles inside and outside the foot called the ancle or ancle bone a b is equal to the space between the
mouth and the inner corner of the eye.
325.
The foot, from where it is attached to the leg, to the tip of the great toe is as long as the space between the upper part of the chin
and the roots of the hair a b; and equal to five sixths of the face.
326.
a d is a head's length, c b is a head's length. The four smaller toes are all equally thick from the nail at the top to the bottom, and are
1/13 of the foot.
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[Footnote: See Pl. XIV, No. 1, a drawing of a foot with the text in three lines below it.]
327.
The whole length of the foot will lie between the elbow and the wrist and between the elbow and the inner angle of the arm towards the breast when the arm is folded. The foot is as long as the whole head of a man, that is from under the chin to the topmost part
of the head[Footnote 2: nel modo che qui i figurato. See Pl. VII, No. 4, the upper figure. The text breaks off at the end of line 2 and the text given under No. 321 follows below. It may be here remarked that the second sketch on W. P. 311 has in the original no explanatory text.] in the way here figured.
Proportions of the leg (328-331).
328.
The greatest thickness of the calf of the leg is at a third of its height a b, and is a twentieth part thicker than the greatest thickness of the foot.
a c is half of the head, and equal to d b and to the insertion of the five toes e f. d k diminishes one sixth in the leg g h. g h is 1/3 of the head; m n increases one sixth from a e and is 7/12 of the head, o p is 1/10 less than d k and is 6/17 of the head. a is at half the distance between b q, and is 1/4 of the man. r is half way between s and b[Footnote 11: b is here and later on measured on the right side of the foot as seen by the spectator.]. The concavity of the knee outside r is higher than that inside a. The half of the whole height of the leg from the foot r, is half way between the prominence s and the