ection of a garden
hose tightly, as shown at AA. A piece of porcelain tube, B, used
for insulation, is fitted tightly in the third hole. The hose
insulation A should hold the carbon F rigidly, while the carbon E
should rest loosely in its insulation.

The inner end of the carbon E is supported by a piece of No. 25
German-silver wire, C, which is about 6 in. long. This wire runs
through the

[Illustration: Arc in a Large Can]

porcelain tube to the binding post D. The binding post is fastened
to a wood plug in the end of the tube. The tube B is adjusted so
that the end of the carbon E is pressing against the carbon F. The
electric wires are connected to the carbon F and the binding post
D. A resistance, R, should be in the line.

The current, in passing through the lamp, heats the strip of
German-silver wire, causing it to expand. This expansion lowers
the end of the carbon E, separating the points of the two carbons
and thus providing a space between them for the formation of an
arc. When the current is turned off, the German-silver wire
contracts and draws the two carbon ends together ready for
lighting again. The feed can be adjusted by sliding the carbon F
through its insulation.

A resistance for the arc may be made by running the current
through a water rheostat or through 15 ft. of No. 25 gauge
German-silver wire.
--Contributed by R. H. Galbreath, Denver, Colo.

** A Traveler's Shaving Mug [9]

Take an ordinary collapsible drinking cup and place a cake of
shaving soap in the bottom ring. This will provide a shaving mug
always ready for the traveler and one that will occupy very little
space in the grip.

** Homemade Snowshoes [9]

Secure four light barrel staves and sandpaper the outside smooth.
Take two old shoes that are extra large and cut off the tops and
heels so as to leave only the toe covering fastened to the sole.
Purchase two long book straps, cut them in two in the middle and
fasten the ends on the toe covering, as shown in Fig. 1. The
straps are used to attach the snowshoe to the regular shoe. When
buckling up the straps be sure to leave them loose enough for the
foot to work freely, Fig. 2. Fasten the barrel staves in pairs,
leaving a space of 4 in. between them as shown in Fig. 3, with
thin strips of wood. Nail the old shoe soles to crosspieces

[Illustration: Made from Barrel Staves]

placed one-third of the way from one end as shown. --Contributed
by David Brown, Kansas Ci