are empty oil barrels like the others.
The head holes are bored and the proper wooden shafts are inserted
and the entrance to the bores closed tight by calking with hemp
and putty or clay. The ends of the shafts turn in the wooden frame
where the required bores are made to receive the same. If the
journals thus made are well oiled, there will not be much
friction. Such a frame can be fitted with a platform and a raft to
suit one's individual fancy built upon it, which can

[Illustration: Another Type of Float]

be paddled about with ease and safety on any pond. A sail can be
rigged up by using a mast and some sheeting; or even a little
houseboat, which will give any amount of pleasure, can be built.

** How To Make a Small Searchlight [336]

The materials required for a small searchlight are a 4-volt lamp
of the loop variety, thin sheet brass for the cylinder, copper
piping and brass tubing for base. When completed the searchlight
may be fitted to a small boat and will afford a great amount

[Illustration: Searchlight]

of pleasure for a little work, or it may be put to other uses if
desired.

Make a cylinder of wood of the required size and bend a sheet of
thin brass around it. Shape small blocks of boxwood, D, Fig. 1, to
fit the sides and pass stout pieces of brass wire through the
middle of the blocks for trunnions. Exactly through the middle of
the sides of the cylinder drill holes just so large that when the
blocks containing the trunnions are cemented to the cylinder there
is no chance of contact between cylinder and trunnion, and so
creating a false circuit.

The trunnion should project slightly into the cylinder, and after
the lamp has been placed in position by means of the small wood
blocks shown in Fig. 1, the wires from the lamp should be soldered
to the trunnions. It is best to solder the wire to the trunnions
before cementing the side blocks inside the cylinder.

Turn a small circle of wood, A, Fig. 2, inside the cylinder to fit
exactly and fasten to it a piece of mirror, C, Fig. 2, exactly the
same size to serve as a reflector. Painting the wood with white
enamel or a piece of brightly polished metal will serve the
purpose. On the back of the piece of wood fasten a small brass
handle, B, Fig. 2, so that it may readily be removed for cleaning.

In front of cylinder place a piece of magnifying glass for a lens.
If a piece

[Illustration: Front View; Side View]

to fit cannot be obtaine