When filling an engraved door-plate with wax, the utmost cleanliness must be observed, as any foreign matter rises to the surface, and the wax should be rubbed down till a clean and brilliant colour is established. The best vermilion wax should be obtained, and it should then be powdered. To do this, break the wax into convenient pieces, and place between two clean pieces of brass or iron plate : wrap the whole in several thicknesses of brown paper, tie with twine, and hammer the package well. This will make the wax quite small enough. Another plan of filling the lines is to heat the plate, and rub in the wax from the slab or stick; another is to grind up the powdered wax with gold size, set in with a palette knife, and put aside to harden. Clean off with alcohol. Or dissolve wax in pure alcohol to a creamy mixture, so that it will pour freely and All the letters; leave to set hard, then clean up with spirit.