nd and the sides pressed with the fingers, thus causing
the small bottle to descend and ascend at will. If the small
bottle used is opaque, or an opaque tube such as the cap of a
fountain pen, many puzzling effects may be obtained. --Contributed
by John Shahan, Auburn, Ala.

** How to Make an Inexpensive Wooden Fan [332]

Select a nice straight-grained piece of white pine about 1/4 in.
thick, 3/4 in. wide and 4 in. long. Lay out the design desired and
cut as shown in Fig. 1, and then soak the wood in hot water to
make it soft and easy to split. Cut the divisions very thin with a
sharp knife down to the point A, as shown in the sketch, taking
care not to split the wood through the part left for the handle.
The fan is then finished by placing each piece over the other as
in Fig. 2. This will make a very pretty ornament.
--Contributed by Fred W. Whitehouse, Upper Troy, N.Y.

[Illustration: Cutting the Wood and Complete Fan]

** Combination Telegraph and Telephone Line [332]

The accompanying diagrams show connections for a short line system

[Illustration: Wiring Diagram]

(metallic circuit) of telegraph where a telephone may be used in
combination on the line. The telephone receivers can be used both
as receivers and transmitters, or ordinary telephone transmitters,
induction coils and battery may be used in the circuit with a
receiver. If a transmitter is used, its batteries may be connected
in circuit with a common push button which is held down when using
the telephone. On a 1000-ft. line, four dry cells will be
sufficient for the telegraph instruments and two cells for the
telephone.
--Contributed by D. W. Milter.

** How to Make a Miniature Windmill [333]

The following description is how a miniature windmill was made,
which gave considerable power for its size, even in a light
breeze. Its smaller parts, such as blades and pulleys, were
constructed of 1-in. sugar pine on account of its softness.

The eight blades were made from pieces 1 by 1-1/2 by 12 in. Two
opposite edges were cut away until the blade was about 1/8 in.
thick. Two inches

[Illustration: Details of Miniature Windmill Construction]

were left uncut at the hub end. They were then nailed to the
circular face plate A, Fig. 1, which was 6 in. in diameter and 1
in. thick. The center of the hub was lengthened by the wooden
disk, B, Fig. 1, which was nailed to the face plate. The shaft C,
Fig. 1, was 1/4-in. iron rod, 2 ft. long,