It will be obvious that the interior of the faked bowl is really much smaller than that of the "plain" bowl; if, therefore, the latter bowl is filled with rice and the faked bowl placed on the top and both bowls are turned over together the quantity of rice appears to have increased because it overflows. (The edge of the faked bowl is made to fit into the edge of the other bowl, and thus the task of inverting the bowls is simplified; they cannot slide apart.)
Near the brim of the faked bowl there is a small air hole, and there is another hole in the centre of the bottom of the bowl. To fill the space between the inner lining and the bowl itself with water and to prevent the water from falling out until you wish it to appear, proceed in this way.
Place the bowl in water and let it remain there until no more air bubbles rise to the surface. Move the bowl once or twice in the water to make sure that the space is properly filled. Lift the bowl out of the water by the brim, but just before you get the brim clear of the water put a finger on the air hole there; then the water will not run out of the air hole at the bottom of the bowl.
Keep the finger jammed down tightly on the air hole in the brim of the bowl, wipe the outside of the bowl thoroughly dry and place a small piece of adhesive rubber plaster over the air hole in the bottom of the bowl. You can then turn the bowl upside down without any fear that the water will escape through the air hole in the brim. Wipe the inside of the bowl thoroughly dry and you are ready to start the trick.
Place the faked bowl, upside down, on the table and the other bowl over it. (You will understand, of course, that the bowls should be in this position on the table when you are about to present the trick.)
Pick up the plain bowl with the left hand and the faked bowl with the right, and show the interiors of both bowls to the audience. Pour rice into the plain bowl until it is nearly full, and put the faked bowl on the top of it. Invert the two bowls together; when you separate them the quantity of rice will have apparently increased, because the interior of the faked bowl is really much smaller than that of the plain bowl.
Fig. 10
As there is no celluloid disc to get rid of there is no need to use the empty bowl as a scoop with which to level the rice; in fact, it will be inadvisable to use it. By using the bowl as a scoop one would merely level the rice, whereas it is really necessary to get nearly all the rice out of the faked bowl. Begin by levelling the rice with the left hand while you hold the other bowl in front of it; just before you replace the empty bowl bend the left fingers slightly and thus scoop out as much of the rice as you can possibly get out in this way. You must not let the audience see that you are really trying to empty the bowl, and no harm is done if you leave a little rice in it.
Replace the empty bowl on the top of the faked bowl, and invert both bowls together; just before putting them on the table remove with the left thumbnail the piece of rubber plaster which has covered the air hole in the bottom of the faked bowl. (If you are performing in a hall with part of the audience in a gallery, so that they can look down on to the top of the bowls, it is as well to disguise the little piece of rubber plaster with a touch of gold paint.)