SOLUTION OF GUM-ARABIC.

The solution of gum-arabic is made by simply adding water to it. When

used as a varnish, or for attaching objects, it is extremely apt to get

too brittle, in very warm weather, and to crack, or split off in scales;

to prevent this, a quarter of an ounce of white or brown sugar-candy

must be added to two ounces of gum-arabic,

Ladies' manual of art; or, profit and pastime. A self teacher in all branches of decorative art, embracing every variety of painting and drawing on china, glass, velvet, canvas, paper and wood the secret of all glass transparencies, sketching from nature. pastel and crayon drawing, taxidermy, etc. · 第 148 / 165 题