Cover a level board with a piece of wet white cheesecloth and tack it securely upon it. Mould the lump of clay into a square, by hand, lay it on the board and pound it with the thick part of your hand into an irregular square cake, then roll it with a rolling pin till it is about three-eighths of an inch thick. Have ready another board the same size and covered with wet cheesecloth, lay it on top of the clay sheet and reverse it so that the clay shall be transferred to this second board. Roll it again till quite smooth and set it away overnight. The next day take a foot rule and a sharp pencil and mark the clay sheet into bricks, two inches long by an inch wide. Cut them out with a strong, sharp knife, but do not lift them until they are thoroughly dry, which will be in three or four days. They should then be carefully packed and sent to the pottery to be fired. _A Clay Whistle_ =Materials Required:= A piece of clay about the size of a lemon, The wooden modelling tools, A bowl of slip, A pen knife. [Illustration: FIG. 64] The Mexicans mould tiny whistles of clay, which are as simple as possible to make and very fascinating to own. If you would like to make some for yourself and your friends this is the way to do it: Mould a small piece of clay into a cup shape about an inch across and three-eighths of an inch high. Put it in the air to dry for ten minutes. Now roll a piece of clay, about the same size, on the table with the palms of both hands (near the base of the thumb), lightly, yet so as to make the clay roll entirely around with each push. If the roll flattens from too hard pressure, pat it till it is round again and roll it until it is of even thickness--about quarter of an inch in diameter. It is then flattened evenly by patting it with the fingers, one end is cut into a long point and the coil is started on edge with the narrow side up on the top of the cup of clay, whose rim must first be wet with slip. Bend the upper edge of the roll of clay in quite a little, to follow the shape shown in Fig. 64. Hold the long end of the clay strip with the left hand, while, with the thumb and middle finger of the right hand held on each side of the coil to support it, the forefinger presses it down firmly on the top of the little cup. When the coil has gone all the way around cut the end into a flat point, which will fit evenly in with the one at the beginning, and press the edges together with the flat part of the nail of your forefinger. Do this where the edges of the coil come against the rim of the cup. Make quick and firm yet short strokes of the nail up and down, inside the cup and out. Then let it dry for a short time, about ten or fifteen minutes. Roll another coil in the same way and attach it, after brushing the top edge of the clay cup with slip, bending the top edge of the coil in very decidedly so as to leave only a small opening at the top.