... large bell-glass, with a short neck and cork at the top, such as may be seen in the chemists' shops. Then procure a small quantity of benzoic acid, which exists in the shape of snowy crystals. Elevate the bell-glass upon a little stage made of books or pieces of wood, so as to allow a spirit-lamp to be introduced underneath, and a little evaporating dish to be held above the flame by means of a ring of wire with suitable ... — St. Nicholas Magazine for Boys and Girls, Vol. 5, October 1878, No. 12 • Various