[ 756 ] 
was hypatoides; and which are alfo mentioned by 
other writers, of a low age (30) ; thefe modes, I lay, 
I fufped to be founded on diftindions not in ufe fo 
early. The ufe of the fpecies of diapafon in melo- 
pcei’a is confirmed alfo by Bacchius, who, imme- 
diately after explaining them, exprefles himfelf thus : 
“ So many, therefore, in the art of mufic, are the 
fpecies of the confonances, by which every melopceia 
is formed (31 ).” 
And alfp by Ariftides Quintilianus, who concludes 
his dodrine of the fpecies, with thefe words : 
“ And thus much fuffices concerning fyftems, 
which the antients alfo ftyled the ethic princi- 
ples (32).” 
For, by fyftems, we are here to underftand fyftems 
in the general fenfe, as defined and treated by the 
Ariftoxenians, whom Ariftides follows in this part of 
his work, and more particularly the three confonant 
fyftems, whofe fpecies he had juft been defcribing. 
The paflage I have already cited from Plato, ferves 
alfo ftrongly to fupport this point ; for the terms, 
fpecies, and figure, are there ufed in the ftrid technic 
fenfe, and not merely to exprefs variety, as appears 
from his fpeaking, in the fame paftage, afterwards 
of the fpecies of melos, the fenfe of which cannot 
be miftaken ; and that he is fpeaking of mufic, in 
(30) Martianus Capella, p. 189. v. 21. Manuel Bryennius in 
Oper. VVallifii, p. 503. v. 1 4^ ^ „ , 
(31) Tocauta p -jv i?i T ffvfj.<pavtuv r a ilJ'ii iv th [txtrtKn n», 
J'i' uv vcLao. ixihoTToiia. <TvvW&lct! • Bacch. Sen. Introd. Art. MuJic. 
p. 19. v. 1 8. ^ ^ , , 
(32) ri£e/ p vv <rvrtt/j.aTuv, a 'ttaka/o'i T i&Pwv c.kakw, 
apki-Itw tc/jjja, Ariftid. Quintil . p . 18 . v . 12 . 
refped 
