2. THE DIALECTS.--The dialects of the ancient tribes inhabiting the peninsula early came in contact with the rustic Latin, and were moulded into new tongues, which, at a later period, were again modified by the influence of the barbarians who successively invaded the country. These tongues, elaborated by the action of centuries, are still in use, especially with the lower classes, and many of them have a literature of their own, with grammars and dictionaries. The more important of these dialects are divided into three groups: 1st. The Northern, including the Ligurian, Piedmontese, Lombard, Venetian, and Emilian. 2d. The Central, containing the Tuscan, Umbrian, the dialects of the Marches and of the Roman Provinces. 3d. The Southern, embracing those of the Neapolitan provinces and of Sicily. Each is distinguished from the other and from the true Italian, although they all rest on a common basis, the rustic Latin, the plebeian tongue of the Romans, as distinct from the official and literary tongue. 3. THE ITALIAN LANGUAGE.--The Tuscan or Florentine dialect, which early became the literary language of Italy, was the result of the natural development of the popular Latin and a native dialect probably akin to the rustic Roman idiom. Tuscany suffering comparatively little from foreign invasion, the language lost none of its purity, and remained free from heterogeneous elements. The great writers, Dante, Petrarch, and Boccaccio, who appeared so early, promoted its perfection, secured its prevailing influence, and gave it a national character. Hence, in the literature there is no old Italian as distinct from the modern; the language of Dante continues to be that of modern writers, and becomes more perfect the more it approaches the standard fixed by the great masters of the fourteenth century. Of this language it may he said that for flexibility, copiousness, freedom of construction, and harmony and beauty of sound, it is the most perfect of all the idioms of the Neo-Latin or Romanic tongues. PERIOD FIRST. FROM THE ORIGIN OF ITALIAN LITERATURE TO ITS FIRST DECLINE (1100-1475).