DIESIS, 
manufactures of ile and fine woollen cloth and linen cloth 
ofa Hae qual 
DIESIS, in the Hae Mufic, was the enharmonic pet: 
n Italian mufic it implies a common % 0 
Gee 8 Suarpand Ennarmonic. The order 
in which the fharps are placed at the clef is by ees in the 
following manner: FCG DA, &c. The ufe of a b and 
of a movement extends no further than a 
peated 
then the els of the rl er need not es ee but is 
underfto and fharps at 
the ie are to ane an ae of tranfpofed keys. 
apccietette att 
- major keys, afcending, the femitones are from the third 
o the fourth ae from the feventh tot ea deen and i : 
minor leas a efcending, without accidental fharps, 
eee they lie from the fixth to the ffth and thied to the fee 
con 
. The French and Italians have no ae nee to exprefs a 
%. or minor {emitone, than deze and die 
The enharmonic fharp, or quar cerstone, hi in the Greek mu- 
fic marked with a ingle crofs x, isufed in modern mutlic fer 
a double fharp; as ina key with many fharps at the clef, if it 
is neceflary to elevate one 7 the founds already fharp a 
nominal half noce, it is (or fhould be) expreffed by an en- 
harmonic.di-lis, thus: as in Corelly s XIth fole. 
x6 
6 5 xe 6 5 x 
Ty a -- | ig F- io 
7—* Cc IE = i t -——]} 
: P I - =r 
i I 
oft oe Pe 
- 
jc Ee bis peeee 
eet tens nein ewes cme See, 
x6 
5 
OMe ge OK xs @ fe. { x. }. 
PD Ole Ke ad { t { Kao {_ 
XK it | | j tJ ae. | 
{_ { ia { {_ { a 
¢ t T fy . 
The diefis, or common harp, is inadmiffible in canto 
fermo. P. Martini. 
Disesis Enharmonic, in eae : an a ereel 7 penis by 
whol 135, common 
is ° fo the. re major of 
Salom 
r. Boyce and others : the tierce ee, of earl S Seabees. 
and the comma greater of fomr. It is equalto 212 + 2m, 
.gogi70 times the major comma. In Euler’s loga- 
rithms, or decimals of an oGave, it is =.03421 tree 
fults from o addition of the followinz intervals, viz. a 
poi comina and a minor commas a {chifma and two minor 
8 § ie a major refidual and an hypcroche. This in- 
peal will alls be found as the difference of the following 
intervals; viz. a ise comma froma femitoue minimum ; a 
e a femitone major; i i 
nimis from a limma; a femitone medius from a femitone max- 
two 
hifmas; three major thirds 
ee fixths from two oCiaves; 
major thirds from e fum of a minor fourth and minor 
third. The three hat is rnifhing us with aie ae methods 
of tuning an enharmanic diefis upon an organ 
Dissis senha oF Maxwell ; el paalen has a ratio of 
2023.2 162 and is the om 
Dicer — of Maxwell 3 this cea rae ae ratio of 
32788, = 5, and is the Scursma, whi h fe 
LESIS Major of lord proces) ; the ratio of this in- 
i 
major femitoncs ; three fchif- : 
terval is 2 34, 
whic 
Diesis Chromatic; this interval has a ratio of 
== 202 + 2m, its common logarithm is .9871761,5 
It refults from the 
viz. a {chifm 
sseeitiey and hyper 
low ing, viz. an palace 
3624 f+ 3m, being the Minor Szmirone, 
enharmonic diefes from a femitone 
three minor fourths from four major 
furnifhing a mcthod of tuning a chromatic dicfis on an ore 
gan, &c. 
Dissts of Dr. Smith. This author, in his [armonics, has 
confidered various-tempered fyttems, whofe feveral o€taves re 
makes to confit of five equal tones, and two equal limmas ; in 
each of which hecall: dlimma 
the minor lina of that fyftem ; ; and he alfo denominates 
the drfferecee between the major and minor limma the dielis_ 
of each fyilem; for example, (page 223) he calculates the 
one in his fyftem of ay al harmony, to be in common lo 
arithms = .9879016.9¢ 
LESIS a lea of Baclidy is the7,th part of the minor 
fourth, or 25 % 2im. 
1ESIS trintalis of Eveli, i isthe 2th part of the minor 
fourth, 33 3224+ 3 f+ 2 
Diests of Bocthiue, 18 half « of the limma, or 23 2+ % 
+ 2m 
Dr ESIS ot Mercator, i is flated to be 2, part of an oftave, or 
3s7 2 + 3eftm 
Diesis 
