secretly pushed into the switch, which is held in the right hand.
The hand is then placed on the board over the magnet. When the
performer wishes the hand to move he pushes the plug in, which
turns on the current and causes the magnet to attract the iron in
the wrist, and will, therefore, make the hand rap. The switch can
be made similar to an ordinary push button so the rapping may be
easily controlled without detection by the audience.

** Making Skis and Toboggans [3]

During the winter months everyone is thinking of skating, coasting
or ski running and jumping. Those too timid to run down a hill
standing upright on skis must take their pleasure in coasting or
skating.

The ordinary ski can be made into a coasting ski-toboggan by
joining two pairs together with bars without injury to their use
for running and jumping. The ordinary factory-made skis cost from
$2.50 per pair up, but any boy can make an excellent pair far 50
cents.

In making a pair of skis, select two strips of Norway pine free
from knots, 1 in. thick, 4 in. wide and 7 or 8 ft. long. Try to
procure as fine and straight a grain as possible. The pieces are
dressed thin at both ends leaving about 1 ft. in the center the
full thickness of 1 in., and gradually thinning to a scant 1/2 in.
at the ends. One end of each piece is tapered to a point beginning
12 in. from the end. A groove is cut on the under side, about 1/4
in. wide and 1/8 in. deep, and running almost the full length of
the ski. This will make it track straight and tends to prevent
side slipping. The shape of each piece for a ski, as it appears
before bending, is shown in Fig. 1.

The pointed end of each piece is placed in boiling water for at
least 1 hour, after which the pieces are ready for bending. The
bend is made on an ordinary stepladder. The pointed ends are stuck
under the back of one step and the other end securely tied to the
ladder, as shown in Fig. 2. They should remain tied to the ladder
48 hours in a moderate temperature, after which they will hold
their shape permanently.

The two straps, Fig. 3, are nailed an a little forward of the
center of gravity so that when the foot is lifted, the front

[Illustration: Fig. 1, Fig. 2, Fig. 3 -- Forming the Skis]

of the ski will be raised. Tack on a piece of sheepskin or deer
hide where the foot rests, Fig. 4.

The best finish for skis is boiled linseed oil. After two or three

[Illustration: Fig. 4 -- The Toe Straps]