DIF 
whofe ratio is 343, or 25 + f + 2m, which is the Semr- 
TONE Leg ee which fee. 
r of Rameau, i is an interval whofe ratio is 
Bee or 21 Babs 2m, which is the enharmonic Ditstis, which 
cae 
Dies Minor of Rameau, is an interval whofe ratio is 
2973, orr52+f+ im, which is the ier ae which fee 
IEZE > Minine of ameau, is an interval whofe rati 
is 12883, © 3 its ithm is 
a major comma 2 
a the ilove Piibiac) viz. afchifma from an iy 
m mitone {ubminimis; and a femi- 
major third and five 
miner thirds from four minor fourths, which lafi gives a 
practical method of tuning the dieze minime on an or- 
gan, &c 
IFF, is the name of an inftrument of mufic among the 
Arabs, Caine chicfly to beat time to the voice: it is a hoop, 
femetimes wit pieces of brafs fixed to it to make a jingling, 
over which a piece of parchment 1s diftendcd. It is beat 
with the fingers, and is bs true tympanum of the ancients. 
a : Hilt. of Ale 64. 
DIF RREATION among the Romans, a ee 
wliteby the divorce of their priefts was folemnized. 
The word comes from the prepofition dis ; 8 
ufed in ® compotion, for divifion, or on ; and farrea- 
tio_a ceremony with wheat, of far, w 
D ffarreation was properly the diffolvin ie "of marriages, con- 
tracted by sl aa ; which were thofe of the pontifices, 
or priefts. Feftus fays, it was performed with a whea 
cake. Nate vil five sue etic and diffarreation to 
be the fame th 
DIF FERENCE, in Logic, an effential attribute belong- 
« Ing to fome fpecies, and not found in the genus; being the 
idea that defines the {pecies. 
Thus, body and f{pirit are the two fpecies of fubftance, 
which in their ideas ola fomething more than is included 
in the idea of fubftance. In a ay, for inftance, is found 
impenetrabiiity, and extenfi-n pir 
ing, and reafoning : fo that the Tae of body is 
trable oo and the difference of {pirit is cogitation. 
IFFER = in Mathematics, the excefs of one quantity 
atove aes 
Whena tela quantity is epee from a greater, what 
remains is called the differenc 
twasa furdamental crac eaneug? he ancient geometers, 
that the difference of any two unequal q'rantities, by which 
bate 
the greater exceeds the lefler, may be added toi felf, rill it 
fhall exceed any propofed finite quaatity of the fame kind. 
‘Yhis principle feems inconSitent with the fuppofition of an 
h added t — 
dation 
lait may, wi ith proper c: caution, ae ce Bee accurate. 
JIFTERENCE of longitude af two places, is an arch of the 
equator intercepted between tna he plares. 
Disrerence, Afcenfienal, in Ajircnomy, See Ascin- 
a ae 
FERENCES. in iat certain additaments to coat- 
ing is altered, or added, to diftinguifh 
are re 
French, dei 
DIF 
OF thefe oe Sylv. Morgan gives us nine, which 
obtain principally s: viz, the label, which denotes 
the firft and cldett a : ie crefcent, the fecond ; the mullet, 
the third; the martlet, the fourth; the ainulet, the fifth; 
the fleur- de-lis; the fixths the wale, the feventh ; (eck. 
moline, the eighth ; and the eight-foil, the ninth. See each 
under its proper article. 
Again, as the firft 
on acrefcent, - the ss of that houfe, 
curing his father’s life only; the ya crefcent 
charged with a crefcent ; for the third other of the fecond 
houfe, a mullet on a crefcent, &c. Sifters, except of the 
blood-royal, have no other mene of difference in their coats 
of arms befides the form of the efcutcheon. See Lozence 
igns rence 
The prefide nt os € 
ar Ili Greau 
ea shen S ae ee t. Louis; and Peeas ie Belle- 
foreft, &c, to that of Philip Auguftus. The occafion of their 
rife is well accounted for b Contin: re, 
All nations, fays he, prefer the eldeft brothers to the 
th a battoon, an 
the eae of jhe bear double differences, or dif- 
Fae char ee on one another ; VIS. the eldett fon of the 
econd ue tor 
oints 3 t ourth, a 
label charged with certain figures, as eaglets, ones: mart 
lets, crefcents, rofes, &c. And, for the fame rezfon, the 
fecond fon of the third foiwfhall bear a bordure engrailed ; 
the third, a bordure charged with bezants, or tourteaux %, 
& 
ut the fame author judges the fixing any certain invari- 
able differences at all a 
Pp 
fide no abe vesmetioned, ma e¢ ufed as 
as thells, bezints, cinquefoils, and a thoufand more. Som 
younger families have made the difference in ane arms by 
only diminithing the ordimaries, or changing the potture ; 
ard others. by only changing the metal, or ues 
It mutt be nase. that the difference may be of metal o 
metal, or colour on colour; which, in other alee i‘ falfe 
Mi 
ao 
heraldry. 
DiFreRENCES, Ancient. 
DIFFERENTIAL, “. in the Higher 
Geometry, an infinitely forall ae or a particle of quan- 
tity fo fmall as to be lefs. than any aflignable one. See 
FLUXioN, 
oe 
It 
