Howard, Frank: Colour, as a means of art: being an adaptation of the experience of professors to the practice of amateurs (London, 1838)

36 CUYP'S PRINCIPLE.

but very far from cold ; being of a Sepia brown,
and sometimes warmer, with some cool reflections
from the air. The sky is gently graduated from a
rich yellow to the most delicate warm grey. The
middle ground affords some blackish-green half-
tints or shadows; and some golden lights are
introduced in front.

Cuyp treated figures, animals, and boats in this
way. The points requiring attention and care are,
first, the tone of the sky and yellow lights, which
must be obtained from yellow and Roman ochres;
the sky should have a creamy quality of colour ;
and what little grey is introduced, must be Cobalt
Blue, or Ultramarine with Carmine, or Lake, so as
to prevent the slightest appearance of green :
secondly, the masses of shadow must be of agree-
able shape and must not be too dark. Plate.