624

On the preparation and use of colours.

THE PROPORTIONS OF COLOURS.

If one ounce of black mixed with one ounce of white gives a certain shade of darkness, what shade of darkness will be produced by 2 ounces of black to 1 ounce of white?

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

623 * 625

VII * X

Notebooks of Leonoardo da Vinci

VIII: Botany for Painters and Elements of Landscape Painting.

. . .

Of depicting night-scenes.

604

Of depicting a tempest.

605,

606

Of representing the deluge.

607,

608,

609

Of depicting natural phenomena.

610,

611

Of chalk and paper.

612,

613,

614,

615,

616,

617

On the preparation and use of colours.

618,

619,

620,

621,

622,

623,

624,

625,

626,

627

Of preparing the panel.

628

The preparation of oils.

629,

630,

631,

632,

633,

634

On varnishes [or powders].

635,

636,

637

On chemical materials.

638,

639,

640,

641,

642,

643,

644

. . .