Take a solution of equal parts of oil of turpentine and copal lac, and immerse the grasses, such as Anthoxan-thum, Briza, etc, and, before they are quite dry, strew them over with gold, silver, or copper bronze. All other colors for grasses are put on as follows: Dip the grasses in a very thin solution of gum arabic, and, when they are partially dry, lay on the color with a soft pencil.