Whittock, Nathaniel: The Art Of Drawing And Colouring, From Nature, Birds, Beasts, Fishes, And Insects: With Plain And Coloured Drawings, From Original Paintings By Morland, Vernet, Howet, Le Cave, &c. (London, 1830)

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be coloured, with the exception of the bright light down the centre
of the fish ; this, as before, must be left quite white. A light tint os
indigo is worked over each scale, in the same way as the yellow on
the gold fish; this is succeeded with a tint of prussian blue; the
darker touches are indigo and lake.
*
This is the proper method of executing these fish with colour only,
but the esfect may be greatly heightened by the application os silver,
gold, or bronze. A few touches of gold on the lightest parts of the
gold fish, and a line or two on the sins and tail, will give a great
resemblance to nature. Silver applied in the same way on the silver
fish will produce a like esfect. Gold, silver, bronze, &c. can be pur-
chased, ready prepared for this purpose, in small shells, at the colour
shops. The student who wishes to prepare it himself, will find that the
gold leaf may be reduced to powder by being ground with honey on a
glass slab ; this is spread over the inside of a muscle shell, and when
dry is fit for use. Silver may be ground with gum-water. Some ladies
produce a most brilliant essect by the application of leaf silver and gold
to their drawings, but this requires very judicious management, and is
not so likely to produce the esfect desired in the hands of a student.
When gold or silver fish are seen in a glass vase, as in the drawing,
it will require great care to produce the esfect of glass before the fish.
If the student observes a globular vessel placed in a room with one
window in it, he will find the strong light strike upon the rim and
projecting part of the globe in a narrow strip of bright light; this is