364

The proportions vary at different ages.

OF THE DIFFERENT MEASUREMENTS OF BOYS AND MEN.

There is a great difference in the length between the joints in men and boys for, in man, from the top of the shoulder [by the neck] to the elbow, and from the elbow to the tip of the thumb and from one shoulder to the other, is in each instance two heads, while in a boy it is but one because Nature constructs in us the mass which is the home of the intellect, before forming that which contains the vital elements.

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.
. . .
The arm and head.
344
Proportions of the arm.
345,
346,
347,
348,
349
The movement of the arm.
350,
351,
352,
353,
354
The movement of the torso.
355,
356,
357,
358,
359,
360,
361
The proportions vary at different ages.
362,
363,
364,
365,
366,
367
The movement of the human figure.
368,
369,
370,
371,
372,
373,
374
Of walking up and down.
375,
376,
377,
378,
379
On the human body in action.
380,
381,
382,
383,
384
. . .