Take out, wash in running water, rinse in alcohol, and rub dry
with linen cloth.
** Homemade Arc Light [112]
By rewinding an electric-bell magnet with No. 16 wire and
connecting it in series with two electric-light carbons, as shown
in the sketch, a small arc will be formed between the carbon
points when the current is applied. In the sketch, A is the
electric-bell magnet; B, the armature; C C, carbon sockets; D,
carbons, and E E, binding posts. When connected with 10 or 12 dry
batteries this lamp gives a fairly good light.
--Contributed by Morris L. Levy, San Antonio, Tex.
[Illustration: Arc Light]
** Lighting an Incandescent Lamp with an Induction Coil [112]
An incandescent lamp of low candlepower may be illuminated by
connecting to an induction coil in the manner shown in the sketch.
One wire is connected to the metal cap of the lamp and the other
wire is fastened to the glass tip. If the apparatus is then placed
in the dark and the current turned on, a peculiar phosphorescent
glow will fill the whole interior of the lamp. The induction coil
used for this purpose should give a spark about 1/2 in.
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