The _barbitos_ was likewise a stringed instrument of this kind. The _sambyke_ is traditionally said to have been invented by Ibykos, about 560 B.C. The _simikon_ had thirty-five strings, and derived its name from its inventor, Simos, who lived about 600 B.C. It was perhaps a kind of dulcimer. The _nabla_ had ten, or according to Josephus, twelve strings, and probably resembled the _nevel_ of the Hebrews, of which but little is known with certainty. The _pandoura_ is supposed to have been a kind of lute with three strings. Several of the instruments just noticed were used in Greece, chiefly by musicians who had immigrated from Asia; they can therefore hardly be considered as national musical instruments of the Greeks. The _monochord_ had (as its name implies) only a single string, and was used as a tuning string. The _aulos_, of which there were many varieties, was a highly popular instrument, and differed in construction from the flutes and pipes of the ancient Egyptians. Instead of being blown through a hole at the side near the top it was held like a flageolet, and a vibrating reed was inserted into the mouth-piece, so that it might be more properly described as a kind of oboe or clarinet. The Greeks were accustomed to designate by the name of _aulos_ all wind instruments of the flute and oboe kind, some of which were constructed like the flageolet or like our antiquated _flûte à bec_. The single flute was called _monaulos_ (Fig. 7), and the double one _diaulos_ (Fig. 8). A _diaulos_, which was found in a tomb at Athens, is in the British Museum. The wood of which it is made seems to be cedar, and the tubes are fifteen inches in length. Each tube has a separate mouth-piece and six finger-holes, five of which are at the upper side and one is underneath. [Illustration: FIG. 8.――A Muse playing the DIAULOS.] The _syrinx_, or Pandean pipe, had from three to nine tubes, but seven was the usual number. The straight trumpet, _salpinx_, and the curved horn, _keras_, made of brass, were used exclusively in war. The small hand-drum, called _tympanon_, resembled in shape our tambourine, and was covered with parchment at the back as well as at the front. The _kymbala_ were made of metal, and resembled our small cymbals. The _krotala_ were almost identical with our castanets, and were made of wood or metal. THE ETRUSCANS AND ROMANS.