The groundwork of the Decameron has been traced to an old Hindu romance, which, after passing through all the languages of the East, was translated into Latin as early as the twelfth century; the originals of several of these tales have been found in the ancient French _Fabliaux_, while others are believed to have been borrowed from popular recitation or from real occurrences. But if Boccaccio cannot boast of being the inventor of all, or even any of these tales, he is still the father of this class of modern Italian literature, since he was the first to transplant into the world of letters what had hitherto been only the subject of social mirth. These tales have in their turn been repeated anew in almost every language of Europe, and have afforded reputations to numerous imitators. One of the most beautiful and unexceptionable tales in the Decameron is that of "Griselda," the last in the collection. It is to be regretted that the author did not prescribe to himself the same purity in his images that he did in his phraseology. Many of these tales are not only immoral but grossly indecent, though but too faithful a representation of the manners of the age in which they were written. The Decameron was published towards the middle of the fourteenth century; and, from the first invention of printing, it was freely circulated in Italy, until the Council of Trent proscribed it in the middle of the sixteenth century. It was, however, again published in 1570, purified and abridged. Boccaccio is the author of two romances, one called "Fiammetta," the other the "Filocopo;" the former distinguished for the fervor of its expression, the latter for the variety of its adventures and incidents. He wrote also two romantic poems, in which he first introduced the _ottava rima_, or the stanza composed of six lines, which rhyme interchangeably with each other, and are followed by a couplet. In these he strove to revive ancient mythology, and to identify it with modern literature. His Latin compositions are voluminous, and materially contributed to the advancement of letters. While Boccaccio labored so successfully to reduce the language to elegant and harmonious forms, he strove like Petrarch to excite his contemporaries to the study of the ancient classics. He induced the senate of Florence to establish a professorship of Greek, entered his name among the first of the students, and procured manuscripts at his own expense. Thus Hellenic literature was introduced into Tuscany, and thence into the rest of Europe.