Fix
the glass in one end of the box, and leave the other open to look
through.
A tin water telescope is more convenient than the wooden one, but
more difficult to make, The principal essential for this is a
circular piece of glass for the large end. A funnel shaped tin
horn will do for the rest. Solder in the glass at the large end
and the telescope is made. Sinkers consisting of strips of lead
should be soldered on near the bottom to counteract the buoyancy
of the air contained in the watertight funnel and also helps to
submerge the big end. The inside of the funnel should be painted
black to prevent the light from being reflected on the bright
surface of the tin. If difficulty is found in obtaining a circular
piece of glass, the bottom may be made square and square glass
used. Use plain, clear glass; not magnifying glass. To picnic
parties the water telescope is of great amusement, revealing
numerous odd sights in the water which many have never seen
before.
** How to Rid Your Yard of Cats [411]
The following is a description of a device I built at my home in
Brooklyn, which not only gave us relief from the
[Illustration: Electric Apparatus for Driving Away Cats]
nightly feline concerts, but also furnished much amusement to my
friends.
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