130 DR TRAILL ON A PERUVIAN MUSICAL INSTRUMENT, We. 
the fifth string, named ayes; that ORPHEUS gave it a sixth, ivar_,; and that the 
seventh, sugirarn, was the addition of TuAmyris.” Even in this improved state of 
their musical system, the fourth was still a favourite and important interval; for 
we find that their great musical system, as they termed it, “‘ extended to two 
octaves composed of five tetrachords ;” in the same manner that the scale of Guipo 
of Arezzo, the inventor of the modern system of musical notation and of cownter- 
point, is composed of different hezachords.—See Burney. 
The sagacity and profound investigations of the learned Sir WiLLIAM JonEs 
have clearly proved that the same systems of literature and arts, which once gave 
lustre to Ethiopia and Egypt, prevailed in India; and more recent investigations, 
especially those of Humsoipr, Aciio, and several American travellers, have 
shewn, as we have already noticed, that the arts, the cosmogonies, and astrono- 
my, of the Peruvians, the Mexicans, and some of the other tribes of Central Ame- 
rica, betray, in some respects, an Asiatic origin. 
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