-Cut your glass the right size, and make it perfectly clean with alcohol or soap; then cut a strip of tinfoil sufficiently long and wide for the name, and with a piece of ivory or other burnisher rub it lengthwise to make it smooth; now w»'t the glass with the tongue (as saliva is the best sticking sub stance,) or if the class is very large, use a weak solution of gum arabic, or the white of an en in half a pint of water, and lay on the foil, rubbing it. down to the glass with a hit of cloth, then also with the burnisher; the more it is burnished the better will it look; now mark the width on the foil which is to be the height of the letter, and put on a straight edge, and hold it firmly to the foil, and with a sharp knife cut the foil, and take off the superfluous edges; then either lay out the letters on the back of the foil (so they shall read 001 correctly on the front) by your own judgment or by means of pattern letters, which can be purchased for that purpose; cut with he knife, carefully holding down the pattern or straight edge, whichever you use; then rundown the edge of all the letters with the back of the knife, or edge of the burnisher, which prevents the black paint or japan which you next put over the back of the plate from getting under the foil; having put a line above and one below the name, or a bolder around the whole plate or not as you bargain for the job. The Japan is made by dissolving asphaltum in just enough turpentine to cut it (see "Asphaltum Varnish;") apply with a brush, as other paint, over the back of the letters, and over the glass forming a back ground. This is used on the iron plate of the frame, also putting it on when the plate is a little hot; and, as soon as it cools, it is dry. A little lamp-black may be rubbed into it if you desire it any blacker than it is without it.