The artists repository and drawing magazine: exhibiting the principles of the polite arts in their various branches (2.1788)

L I* ]

rate bottle for ufe. Some have fubftituted farcocolla
for the copal.

Another compofition is formed, by diffolving maftich
and fandaric, grofsly powdered, of each fix ounces, and
Venice turpentine, half an ounce, in a quart of highly
rectified fpirit of wine, and (training off the folution.
If it be required harder, an equal weight of the gums
anime and copal may be added, and the quantity of fpirit
of wine doubled. In the ufe of this varnijh, the paint-
ing fhould be thoroughly dry, and it fliould be fpread
very gently with the pencil. The varnijh fhould be laid
on in a very warm place, or the picture itfelf warmed
to a moderate degree, in order to prevent the chilling of
the varnifi ; in which cafe another coat fhould be added.
And, indeed, two or three coats are neceffary to preferve
the painting, and to bring out a due effect of its colours,
if they are in that ftate called funk in, occafioned by the
attraction of the cloth on the oils mixed with them.

An oil of turpentine -varnijh may be made by grofsly
powdering maftich and fandaric, of each four ounces ;
two ounces of white refin, and farcocolla, anime, copal,
and olibanum, of each one ounce, and putting them into
a phial with two pounds of oil of turpentine, (topping
the phial gently, and placing it in any heat, fo that the
mafs may not boil, and (training off the folution for ufe.

Or, a varnijh more fimple, and equally good, may be
made by powdering two ounces of fandaric, maftich and
olibanum, of each an ounce and half; or three ounces
of maftich, and Venice turpentine, half an ounce; and
diffolving them in half a pound of oil of turpentine,
and proceeding as before.

Varnish.,