Court Plaster
This plaster is a kind of varnished silk, and its
manufacture is very easy. Bruise a sufficient quantity of Isinglass,
and let it soak in a little warm water for twenty-four hours. Expose it
to heat over the fire until the greater part of the water is dissipated
and supply its place by proof Spirits of Wine, which will combine with
the Isinglass. Strain the whole through a piece of open linen, taking
care that the cons
stency of the mixture shall be such that when cool
it may form a trembling jelly. Extend a piece of black or flesh-colored
silk on a wooden frame, and fix it in that position by means of tacks
or twine. Then apply the Isinglass, after it has been rendered liquid
by a gentle heat, to the silk with a brush of fine hair (badger's is
the best). As soon as this coating is dried, which will not be long,
apply a second, and afterward, if the article is to be very superior, a
third. When the whole is dry, cover it with two or three coatings of
the Balsam of Peru. This is the genuine court plaster. It is pliable
and never breaks, which is far from being the case with spurious
articles sold under the same name.