mutes in bringing up the unisons in the temperament is exceedingly
simple.

The following diagram will, we think, demonstrate clearly the method
employed:

Upper row---- o o o o o o o o o o Tim-

Middle row--- o o o o o o o o o o ing

Lower row---- o o o o o o o o o o Pins.
------------------------------------------ Bridge.

* 1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 * &c
/// /// /// /// /// /// /// /// /// /// Treble stringing.
B C C♯ D D♯ E F F♯ G G♯ &c

The upper row of O's represents the upper row of tuning pins. To these
are attached the first string of each unison. To the middle row are
attached the second or middle strings, and to the lower row are
attached the third strings. The diagonal lines represent the three
strings of the unison (trio). The asterisk on the middle one indicates
that it has been tuned.

But one mute is used in tuning these unisons. It is inserted between
the trios in the order indicated by the figures 1, 2, 3, etc. When
inserted in place 1, between unisons B and C, it will mute the first
string of C; so the first string of the trio to tune is always the
third. Then place your mute in place 2 and tune the first string of C.
Then, without moving your mute, bring up third string of C♯, then