Materials Required:—
Two pieces of wood as above, also two larger round sticks, such as are used to roll paper upon, a cork, two long nails, a piece of thin tin or cardboard for the tail.
Fig. 57.
This windmill is made of two propellers cut like Figure 56, but with the bevelling of the blades of one reversed so that it will turn in the opposite direction. A piece of wood or cork or a bead may be put between each propeller. The tail may be made of cardboard or tin.
A WATERWHEEL AND SHUTE
Materials Required:—
Smooth straight twigs about half an inch thick, a thin wooden sweet-box or other light wooden box, two small pieces of white soft wood, about one-third of an inch thick and five inches long and one inch broad, a piece of thick wire, small tacks, pliers, a gimlet, small staples, strong thin string.
