is transmitted through the stick from the music box to
the violin.

[Illustration: The Music Produced by the Phonograph is Transmitted
to the Viohn on the Second Floor by the Aid of a Long Stick]

** Sizing a Threaded Hole [295]

It sometimes becomes necessary to transfer the size of a threaded
hole from some out-of-the-way place to the shop in order to make a
piece to fit it. With proper tools this is easy; without them, it
might be difficult. One thing is always at hand and that is wood.
Whittle a stick tapering until it starts in the hole. Then turn it
into the hole and a fair thread will be made on the wood. The
stick can be carried in the pocket without risk of changing the
size, as would be the case with ordinary calipers.

** Leaded-Glass Fire Screen [295]

The main frame of the fire screen shown in Fig. 1 is made from two
pieces of 1/2-in. square bar iron. The longest piece, which should
be about 5-1/2 ft. long, is bent square so as to form two
uprights, each 28 in. long and measuring 26 in. across the top.
The bottom crosspiece can be either riveted or welded to the
uprights. Two pairs of feet, each 6 in. long and spread about 8
in. apart, are shaped as shown in Fig. 2. These are welded to the
lower end of the uprights.

The ornamental scrollwork on the frame is simple and effective,
and is easy to construct, says Work, London. The scrolls are
attached to the frame by means of 3/16-in. round-head machine
screws. The leaf ornament at the

[Illustration: Completed Fire Screen and Parts]

termination of the scroll is shaped and embossed as shown in Fig.
3. The metal used for the scrolls is 3/16 in. thick by 1/2 in.
wide. The leaf ornament is formed by turning over the end of a
piece of metal and working it together at a welding heat, and then
shaping out the leaf with' a chisel and files, after which they
are embossed with a ballpeen hammer.

The center is made from colored glass of special make for leaded
work. The design is formed in the lead, of which a cross section
is shown in Fig. 4. Use care to give the lead a symmetrical
outline. The design should be drawn full size on a large sheet of
heavy paper and the spaces to be occupied by the lead cut out so
as to leave the exact size and shape of each piece of paper the
same as wanted for each piece of glass. These are used as patterns
in marking the glass for cutting. The glass is cut the same as
ordinary window glass. The glass, lead, border