THE EIGHT CHAPTER.
Of the Dimension of the Monochord.
A Monochord, that is, an Instrument of one string, is thus truely made. Take a peece of wood of a yard long, or what length you please, of two fingers bredth, and so thicke, make it hol∣low in the middle, leauing the ends of it vnhollowed. Let it be couered with a belly peece well smoothed, that hath holes in it, like the belly of a Lute: through the middle of this, let there be secretly drawne one line, and in the beginning of it, let one pricke be marked with the letter F. for that shalbe the first Magade of the Instrument: then diuide the whole line from the pricke F. into nine equall parts, and in the first pricke of the diuisions place vt, in the second nothing, in the third Cfaut, in the fourth nothing, in the fift Gsolreut, in the sixt Csolfaut, in the seuenth Gsolreut small, in the eight nothing, in the last o Cifer, which shall possesse the place of the second Magade. This done, againe diuide the space; which is from vt to the second Magade, into nine parts.
In the first part set A Base; in the third Dsolre; in the fift Alamire; in the sixt D lasolre; in the seuenth aalamire. Then from Are to the second Magade againe make nine parts; in the first set ♮ mi Base; in the third Elami; in the fift ♮ mi in the small letters; in the sixt Elami; in the seuenth ♮ ♮ mi double.
This done, diuide all this space from the first to the second Magade into foure parts: in the first put Bfa Base; in the second Ffaut finall; in the third Ffaut sharpe. Then begin in Bfa Base, and diuide the whole line towards the Cone into 4. parts; in the first, b the Semitone betwixt D & E capitals; in the second, bfa; in the third, bbfa. This done, begin in the semitone, which is betwixt D & E, and diuide the whole line into 4. equall parts. In the first, place b the Semitone, betwixt G capitall and small; in the second, b Semi∣tone, betwixt D and E; in the third, bfa, betwixt dd and ee: and if you fur∣ther diuide the third into two equall parts, you shall haue a semitone betwixt g and aa. Then place the foot of your compasse in Csolfaut, and diuide the space towards the second Magade into two parts; in the middle whereof place cc solfa. In like manner diuide the space from dlasolre towards the Cone into two equall parts; and in the middle place ddlasol. Lastly, diuide the space from e towards the second Magade; and in the middle you shall haue ee la, with the true Dimension of the Monochord. This done, in the extreame