A novel and attractive aeroplane window display can be easily made in the following manner:  Each aeroplane is cut from folded paper, as shown in the sketch, and the wings bent out on the dotted lines.  The folded part in the center is pasted together.  Each aeroplane is fastened with a small thread from the point A as shown.  A figure of an airman can be pasted to each aeroplane.  One or more of the aeroplanes can be fastened in the blast of an electric fan and kept in flight the same as a kite.  The fan can be concealed to make the display more real.  When making the display, have the background of such

[Illustration:  Paper Aeroplanes in Draft]

a color as to conceal the small threads holding the aeroplanes.  —­Contributed by Frederick Hennighausen, Baltimore, Md.

** How to Make a Flint Arrowhead [23]

If you live where flints abound, possess the requisite patience and the knack of making things, you can, with the crudest of tools and a little practice, chip out as good arrowheads as any painted savage that ever drew a bow.

Select a piece of straight-grained flint as near the desired shape as possible.  It may be both longer and wider than the finished arrow but it should not be any thicker.  The side, edge and end views of a suitable fragment are shown in Fig. 1.  Hold the piece with one edge or end resting on a block of wood and strike the upper edge lightly with a hammer, a small boulder or anything that comes handy until the piece assumes the shape shown in Fig. 2.

[Illustration:  Fig.2 Fig.3 The Stone Chipped into Shape]

The characteristic notches shown in the completed arrow, Fig. 3, are chipped out by striking the piece lightly at the required points with the edge of an old hatchet or a heavy flint held at right angles to the edge of the arrow.  These heads can be made so that they cannot be distinguished from the real Indian arrowheads.  —­Contributed by B. Orlando Taylor, Cross Timbers, Mo.

** An Opening Handle for a Stamp Pad [23]

A stamp pad is a desk necessity and the cleanliness of one depends on keeping it closed when it is not in use.  The opening and closing of a pad requires both hands and consequently the closing of a pad is often neglected in order to avoid soiling the fingers.  This trouble can be avoided if the pad is fitted with a small handle as shown in the sketch.  Take the ordinary pad and work the hinge until it opens freely.

[Illustration:  Handle on Cover]

If necessary apply a little oil and spread the flanges of the cover slightly.

Saw off the top of a common wood clothespin just above the slot, saving all the solid part.  Fasten this to the cover near the back side in an upright position with a screw.  A tap on the front side of the pin will turn it over backward until the head rests on the desk thus bringing the cover up in the upright position.  When through using the pad, a slight tap on the back side of the cover will turn it down in place.  —­Contributed by H. L. Crockett, Gloversville, N. Y.