The method employed in sun-printing for repeating designs on glass embossed work is as described below. To make the sensitive resist, crush to a fine powder 1 cub. in. of pure asphaltum and dissolve it in 8 oz. of benzine. This operation must be carried out in a dark room, or a room dimly lighted by gas, and great care must be taken that the light does not strike the mixture, which must be kept in a black bottle. To use the resist, coat the glass to be etched in the dark room. Place the negative, which must be black and white, in a photographic picture frame, and expose; one hour will be sufficient in a strong sun, but in dull weather a whole day will be necessary. Then wash over with paraffin; the part acted upon by the sun will adhere to the glass and form the resist. Now etchin the usual way.