468

On the treatment of light for views of towns.

OF THE SMOKE OF A TOWN.

Smoke is seen better and more distinctly on the Eastern side than on the Western when the sun is in the East; and this arises from two causes; the first is that the sun, with its rays, shines through the particles of the smoke and lights them up and makes them visible. The second is that the roofs of the houses seen in the East at this time are in shadow, because their obliquity does not allow of their being illuminated by the sun. And the same thing occurs with dust; and both one and the other look the lighter in proportion as they are denser, and they are densest towards the middle.

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

VII * X
Notebooks of Leonoardo da Vinci
VIII: Botany for Painters and Elements of Landscape Painting.
. . .
448
The effects of midday light.
449
The appearance of trees in the distance.
450,
451
The cast shadow of trees.
452
Light and shade on groups of trees.
453,
454,
455,
456,
457
On the treatment of light for landscapes.
458,
459,
460,
461,
462,
463,
464
On the treatment of light for views of towns.
465,
466,
467,
468,
469
The effect of wind on trees.
470,
471,
472,
473
Light and shade on clouds.
474,
475,
476,
477
On images reflected in water.
478
Of rainbows and rain.
479,
480
Of flower seeds.
481
How to ascertain the dispositions for an artistic career.
482
The course of instruction for an artist.
483,
484,
485
The study of the antique.
486,
487
The necessity of anatomical knowledge.
488
. . .