A mixture recommended consists of 16 parts gelatine and 5 of glycerine. A colouring matter is then added as may be required - caoutchouc to give elasticity, and boiled linseed-oil to render the whole sufficiently flexible. This composition is spread upon linen whilst hot, printed with any pattern desired. The surface is then treated with a solution of alum, sulphate of iron, copper, or zinc. These saline solutions may likewise be mixed with the composition before it is spread on the linen. The surface is lastly varnished, and may be bronzed or gilt. Another composition is obtained by boiling linseed-oil with quicklime and borax, which forms a liquid that, on cooling, becomes a thick paste. It is then mixed with rasped cork and more quicklime.