here is a panel above the pedals which will come out and admit
the mechanic to the bellows, straps, springs, etc.; but in some old
instruments the case is made solid, in which case the workman must do
his work from the bottom, turning the organ down so as to get at it.
Pedal straps are easily put on; generally with screws at either end.
If the pedal squeaks examine the springs or oil and change their
position slightly. Examine the pulleys over which the straps work and
oil or rub them on the outside with soap. Broken pedal hinges may be
duplicated by any blacksmith; the ordinary hinges, such as can be
bought at hardware stores, are sometimes substituted, but they rarely
answer the purpose as well as the regular pedal hinge. The leather
flaps over the holes in the exhausters sometimes get too tight by
shrinkage so that they will not let the air escape readily, and
consequently the pedals come up slowly, often making it difficult to
keep the instrument sufficiently supplied with power. Simply stretch
the leather flaps, being careful not to pull the tacks loose or tear
the leather.

SYMPATHETIC VIBRATIONS.

Organs, like pianos, are subject to sympathetic vibrations. A reed
fitting loosely in the reed chamber will sometimes buzz when sounded.
A bit of paper under the back end of the reed will stop it. Any loose
material about the instrument may cause trouble of this kind. Trace up
the cause and the remedy will suggest itself.

A buzzing sound may be caused by a reed's being too tight in the reed
chamber, causing the tongue to vibrate against the sides of the brass
body. In some rare cases, not being firmly riveted, the tongue will
move to one side, causing the same trouble. Care and pains must be
taken in working with reeds, but when in this condition they must be
repaired. Tap the rivet lightly with a hammer and try it; if it still
does not sound clear, catch the butt of the reed (riveted end) with a
pair of parallel pliers, and turn it toward the center until, when
vibrating, it clears the jaws.

TUNING.

The method of tuning the organ is very simple. To flatten the tone of
a reed, scrape the tongue near the butt or rivet, making it thinner at
that point, which will cause it to vibrate at a slower rate. To
sharpen the tone, scrape it at the point, thereby lightening the
vibrating end, which will cause a more rapid rate of vibration. When a
reed has been scraped or filed so thin at the point that it will bear
no