Smith, Thomas [Hrsg.]: The Art Of Drawing In Its Various Branches: Exemplified In A Course Of Twenty-Eight progressive Lessons, Calculated To Afford Those Who Are Unacquainted With The Art, The Means Of Acquiring A Competent Knowledge Without The Aid Of A Master ; Being The Only Work Of The Kind In Which The Principles Of Effect Are Explained In A Clear, Methodical, And At The Same Time Familiar Style. Illustrated With Coloured Designs And Numerous Wood Engravings (London, 1827)

42

COLOURS.

LESSON XIII.

On Colours.

Of the immense number of colours which are made
and sold by different colour-shops, we shall only take
notice of about thirty, of which we shall give a descrip-
tion, with remarks on their use, durability, &c., begin-
ning with

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1. Indigo is a fine deep blue, though not

_ sufficiently bright for the skies of clear days,

and ought therefore to be used only for twilight and
evening skies, where great depth is required; it is also
extremely useful for making different greys by mixing it
with lake and any yellow colour, and has been found to
stand * remarkably well.

2. Prussian Blue is a beautiful bright
' colour, and is used for the clear blue skies

of fine days ; it is useful for distant mountains, drapery,
flowers, §'C.; cobalt, however, though rather an ex-

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pensive colour, is to be preferred, as Prussian blue is apt
to change when combined with other colours.

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* By the “ standing” of colours is meant their capability of re-
maining a considerable time without fading or changing ; for
instance, yellow lake does not stand well, because it grows paler
and fades, and Prussian blue does not stand well, because it some-
times changes and grows darker.