Behind the right-hand figure cut a vertical slit in the background about 18 in. wide and 2 in. long, so that the centre of it comes opposite the centre of the figure when the feet are just touching the floor. Fix a piece of wire about 7 in. long into the centre of the figure behind, and at right angles to it, and bend this wire downwards at right angles about 2 in. from the figure. About 1 in. behind the background fix an upright block of wood, to come as high as the centre of the figure, and in front of it fix two small staples, one near the top, and the other about 2 in. lower, but directly under it. Into these slip the end of the wire attached to the figure, after passing it through the slot in the background. This will keep the figure in its place and allow of its moving up and down.

Fig. 10.

Fig. 11.

Prepare the works as for the yacht model, and also insert a pulley (A), as shown in [Figs. 10] and [5]. This is connected with another pulley (B, [Fig. 10]), which is fixed to a block by a screw that is countersunk below the face of it, and to which is fastened by a small screw two wires working freely and passing one to the wire from the left-hand figure, and the other to the cross-piece of the wire from the right-hand one, and connected with them by the ends being bent into rings. From the cross wire to the figure to the right is also hung a drop wire with a small weight at the end, to help to pull it down. [Fig. 11] will explain the fixing of this gear. A fly must be also fitted to the movement, to check the pace. This can be fixed to the pulley (B) or in front of the escapement wheel. The stopping motion is the same as in [Fig. 8], but more slots may be cut in the disc, to regulate the length of time allowed for a penny.

The works you must fix behind the background so that the starting lever comes conveniently for the penny in its fall.

With these three examples of the necessary clockwork you will be able by the exercise of a little ingenuity and the power of contriving to make moving models of any subjects that may suggest themselves to you, such as the following: a steamboat with revolving paddle-wheels, cobbler mending shoes, soldiers marching, etc., etc.

A Real Water-wheel.

I will now tell you how to make the model shown in [Fig. 12], consisting of a water-mill working with real water, a small fountain in the middle, and children playing at see-saw in the background.