It is said that while these two sculptors were staying at Bologna, the Po impetuously burst its banks, doing incredible damage to the territories of Mantua and Ferrara, causing the death of more than ten thousand persons, and wasting the country for miles around. Being clever and worthy men, the assistance of Agostino and Agnolo was requested, and they succeeded in finding means of reducing that terrible river to its bed, and of confining it there with ditches and other effective remedies. This brought them much praise and benefit, for besides the fame which they acquired thereby, their services were acknowledged by the lords of Mantua and by the house of Este with most liberal rewards. When they next returned to Siena in the year 1338, the new church of S. Maria, near the old Duomo, towards the piazza Manetti, was made under their direction from their design, and not long after, the Sienese, who were greatly pleased with all the works which they executed for them, decided to seize this excellent opportunity of carrying into effect a plan which they had long discussed, but till then without any result, namely, the erection of a public fountain on the principal piazza opposite the palace of the Signoria. The charge of this undertaking was entrusted to Agostino and Agnolo, and although it was a matter of great difficulty they brought water to the fountain by pipes made of lead and earth, and the first jet of water was thrown up on 1st June 1343, to the great delight and contentment of all the city, which on this account was under a great obligation to the talent of these two citizens. At the same time the hall of the greater council was made in the Palazzo del Pubblico, and the same artists directed and designed the building of the tower of that palace, which they completed in the year 1344, hanging two great bells on it, one of which came from Grosseto, while the other was made at Siena. In the course of time Agnolo arrived at Assisi, where he made a chapel in the lower church of S. Francesco, and a marble tomb for a brother of Napoleone Orsini, a cardinal and a Franciscan friar, who had died in that place. Agostino, who had remained at Siena in the service of the State, died while he was engaged upon the designs for the ornamentation of the piazza fountain, mentioned above, and was buried in the Duomo with honour. I have not been able to discover how or when Agnolo died, so that I can say nothing about it, nor do I know of any other works of importance by his hand, and so this is the end of their lives. It would, however, be an error, as I am following a Chronological order, not to make mention of some, who, although they have not done things which would justify a narration of their whole life, have nevertheless in some measure added things of utility and beauty to art and to the world. Therefore in connection with the mention made above of the Vescovado and Pieve of Arezzo, let me here relate that Pietro and Paolo, goldsmiths of