the transverse lines are forced into such angles that their ends are
lower on the side which is supported. As is shown at _a b c_.

[Footnote: See Pl. XXII, No. 3.]

360.

OF PAINTING.

Note in the motions and attitudes of figures how the limbs vary, and
their feeling, for the shoulderblades in the motions of the arms and
shoulders vary the [line of the] back bone very much. And you will
find all the causes of this in my book of Anatomy.

361.

OF [CHANGE OF] ATTITUDE.

The pit of the throat is over the feet, and by throwing one arm
forward the pit of the throat is thrown off that foot. And if the
leg is thrown forward the pit of the throat is thrown forward; and.
so it varies in every attitude.

362.

OF PAINTING.

Indicate which are the muscles, and which the tendons, which become
prominent or retreat in the different movements of each limb; or
which do neither [but are passive]. And remember that these
indications of action are of the first importance and necessity in
any painter or sculptor who professes to be a master &c.

And indicate the same in a child, and from birth to decrepitude at
every stage of its life; as infancy, childhood, boyhood, youth &c.

And in each express the alterations in the limbs and joints, which
swell and which grow thinner.

363.

O Anatomical Painter! beware lest the too strong indication of the
bones, sinews and muscles, be the cause of your becoming wooden in
your painting by your wish to make your nude figures display all
their feeling. Therefore, in endeavouring to remedy this, look in
what manner the muscles clothe or cover their bones in old or lean
persons; and besides this, observe the rule as to how these same
muscles fill up the spaces of the surface that extend between them,
which are the muscles which never lose their prominence in any
amount of fatness; and which too are the muscles of which the
attachments are lost to sight in the very least plumpness. And in
many cases several muscles look like one single muscle in the
increase of fat; and in many cases, in growing lean or old, one
single muscle divides into several muscles. And in this treatise,
each in its place, all their peculiarities will be explained--and
particularly as to the spaces between the joints of each limb &c.
Again, do not fail [to observe] the variations in the forms of the
above mentioned muscles, round and about the joints of the limbs of
any animal, as caused by the diversity of the motions of each limb;
for on some side of those joints the prominence of these muscles is
wholly lost in the increase or diminution of the flesh of which
these muscles are composed, &c.

[Footnote: DE ROSSI remarks on this chapter, in the Roman edition of
the Trattato, p. 504: "_Non in questo luogo solo, ma in altri ancora
osservera il lettore, che Lionardo va fungendo quelli che fanno
abuso della loro dottrina anatomica, e sicuramente con cio ha in
mira il suo rivale Bonarroti, che di anatomia facea tanta pompa_."
Note, that Leonardo wrote this passage in Rome, probably under the
immediate impression of MICHAELANGELO'S paintings in the Sistine
Chapel and of RAPHAEL'S Isaiah in Sant' Agostino.]

364.

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.

365.

OF PAINTING.

Which are the muscles which subdivide in old age or in youth, when
becoming lean? Which are the parts of the limbs of the human frame
where no amount of fat makes the flesh thicker, nor any degree of
leanness ever diminishes it?

The thing sought for in this question will be found in all the
external joints of the bones, as the shoulder, elbow, wrists,
finger-joints, hips, knees, ankle-bone and toes and the like; all of
which shall be told in its place. The greatest thickness acquired by
any limb is at the part of the muscles which is farthest from its
attachments.



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