321

Proportions of the head seen in front.

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 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.]

Taken from The Notebooks of Leonardo da Vinci edited by Jean Paul Richter, 1880.

Notebooks of Leonoardo da Vinci
VII: On the Proportions and on the Movements of the Human Figure.
. . .
Preliminary observations.
308,
309
Proportions of the head and face.
310,
311,
312,
313,
314,
315,
316,
317,
318
Proportions of the head seen in front.
319,
320,
321,
322,
323
Relative proportion of the hand and foot.
324
Relative proportions of the foot and of the face.
325,
326,
327
Proportions of the leg.
328,
329,
330,
331
On the central point of the whole body.
332
The relative proportions of the torso and of the whole figure.
333
The relative proportions of the head and of the torso.
334
The relative proportions of the torso and of the leg.
335,
336
The relative proportions of the torso and of the foot.
337
The proportions of the whole figure.
338,
339,
340,
341
. . .