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At present, spirit varnish with its quick drying and high surface is almost exclusively used for this purpose.

Varnishing is nowadays always done with spirit varnish, which is convenient for working.

The spirit varnish to be used—called map or photo varnish—is still too thick as sold.

To make a spirit varnish for maps, 48 49.

To make a spirit varnish for pictures and fancy boxes.—To a pint of alcohol, in a flask, add four ounces of gum-mastic, and one ounce of gum-sandarac, both in powder; expose the mixture to a gentle heat, sufficient to produce a slight ebulition for a few minutes, frequently shaking it, and the gums will be dissolved; strain the varnish through a fine flannel, bottle and cork it.