The third coil is made in the same way, but put on so as to make the sides go straight up like the neck of a bottle or vase. One more straight coil completes the neck, and a piece of clay is then put across the top, closing it. After the whistle has dried for an hour or more a triangular hole is cut with a knife in the lower part (see Fig. 65), and a slit in the top. A hole is also made in the bottom. It should then be thoroughly dried for several days before sending it to be fired. Not every one of these whistles makes a good clear sound, but they are so easy to mould that you will not mind one or two unsuccessful attempts when you finally make one that blows clear and shrill. [Illustration: FIG. 65] _Clay Rattle_ =Materials Required:= A piece of clay about the size of an orange, A bowl of slip, The modelling tools. The Indians used to make clay rattles like the one shown in Fig. 66. It is formed like the whistle except that the cup-shaped piece which is made in starting should be an inch and three-quarters across and three-eighths of an inch high. Roll the strips of clay as already described and brush the edge of the cup-shaped piece with slip before attaching each coil. The handle should be about three inches long. Before closing the end of it drop in four or five clay pellets, about the size of small peas, which have been well dried in the sun. Then seal it with a piece of clay, let it dry for several days and send it to the pottery to be fired. [Illustration: FIG. 66] _Birds' Drinking Dish_ =Materials Required:= About 2 1/2 pounds of clay, The wooden modelling tools, The oval tools of sheet steel, A bowl of slip, A low wide bowl, A small sponge, A knife, A ground glass slab about a foot square, A cloth in which some ground flint is tied.