The world's competition, instituted by Domitian, had a long and successful career, and we can follow its celebration for many centuries, to the age of Petrarca and Tasso. An inscription discovered at Vasto, the ancient Histonium, describes the one which took place A. D. 107 in these words: "To Lucius Valerius Pudens, son of Lucius. Being only thirteen years old, he took part in the sixth _certamen sacrum_, near the temple of Jupiter Capitolinus; and won the championship among the Latin poets by the unanimous vote of the judges." These last words show that special jurors were appointed by the emperor for each section of the competitions. In the year 319 Constantine the Great and Licinius Cæsar celebrated with great solemnity the fifty-eighth _certamen_. Ausonius of Burdigala, the great poet of the fourth century, speaks of an Attius Delfidius, an infant prodigy (_pæne ab incunabulis poeta_), who gained the prize under Valentinian I. The mediæval and Renaissance custom of "laureating" poets on the Capitol was certainly derived from Domitian's institution. The race of the "improvvisatori" has never died out in central and southern Italy. One of the most celebrated in the sixteenth century, named Silvio Antoniano, at the age of eleven could sing to the accompaniment of his lute on any argument proposed to him, the poetry being as graceful and pleasing as the music. One day, while sitting at a state banquet in the Palazzo di Venezia, Giovanni Angelo de' Medici, one of the cardinals present, asked him if he could improvise "on the praises of the clock," the sound of which, from the belfry of the palace, had just struck his ears. The melodious song of Silvio, on such an extraordinary theme, was received with loud applause; and when Giovanni Angelo de' Medici was elected Pope in 1559, under the name of Pius IV., he raised the young poet to the rank of a cardinal in recognition of his extraordinary talent.