Take a pail of cold water, and add to it three gills of ox-gall. Rub it into the carpet with a soft brush. It will raise a lather, which must be washed off with clear cold water. Rub dry with a clean cloth. Before nailing down a carpet after the floor has been washed, be certain that the floor is quite dry, or the nails will rust and injure the carpet. Fuller's earth is used for cleaning carpets, and weak solutions of alum or soda are used for reviving the colours. The crumb of a hot wheaten loaf rubbed over a carpet has been found effective.