Take a piece of linen or “long-cloth” and stamp, or paint gum on all the
parts of a pattern which is to remain intact, and soak it in a
potash-bath at 22° _Centigrade_. In a short time the process of felting,
analogous with that of skeletonizing leaves, will act exclusively on the
ungummed places, and eat away about a twentieth. Only the experienced
eye can tell it from embroidery. Shirt-fronts are thus worked.