( 56% ) 
From this Foundation all the other Notes are cterivtd. 
The flat a-nd fharp fixth are to be the flat and fharp third 
to the fourth 3 and the feventh the like to the fifth \ the 
fecond to be a fifth to the fourth below, &c By this 
Rule let us examine what Notes a Monochord fretted in 
its aliquot parts will produce. 
Suppofe the Monochord ^to confift of 720 parts, and 
its Tone double Cfa-ut the firft Note in the Table; 
then half of it will be 360, and a third part %^o 9 &c. 
Now I fay, fretting, (or flopping with the Thumb) at 
360 muft produce Cfaut, becaufe 3.60 being half 720, 
the found will rife an eighth from doubled fa-ut. 
Again 3 60 being C fa-ut, 240 muft make Gfol-re-ut 
the third Note in the Table, becaufe 140 being juft a 
third part lefs than 360, the found will rife a fifth from 
that Note. After the fame manner proceeding ftep by 
ftepit will be evident that, 
iSoy 
144 
110 
90 J which 
r 240*1 
180 ' 
j 44 
180 
80 >is lefs<{ 12 
72 
60 
48 
45j 
than 
90 
\ 60 
f& 4th 7 
a 5th. 
a 6 th. 
p half 
"C fol fa-ut the 4th.1 
E lami 
Gf$Lre ut 
C fol fa 
a 5 th. 
a 3d. 
a 5 th. 
duccs E/Ji 
C? /0/ re-ut 
Bfabimi 
yCfol-fa 
5th. 1 
cth. * 
8th. 
Pth. > 
10th. 
*th. 
15 th. 
1 6th. 
which 
is lefs 
than 
pro- 
duces' 
IC2 
55 h 
X 
7 
51 
By the farne Reafon, 
a 6th. 
a 4th. 
a 5 th. 
half 
And Co&fequently, 
£ thejtb^Note inr flatter 
L i 1 ith.f the TaO& ar P er Gw, 
i3thYbleis aj'flatter ' 
14th. jlltdc L flattef 
Bfabimi flat, 
\F fa-ut, 
\Alamire, 
Bfabimi flat. 
B/rf&wi flat, 
F fa-uty 
\A lamirt, 
Bfabimi flat* j 
Which anfwera the fccond Inquiry. 
H 
i 
Now 
