and lords of castles, as they still are to-day and were formerly even more; with many ornaments of marble, which to-day have been covered over with other ornaments of grey-stone, many and fine, which were set up in that place with the design of Giorgio Vasari in the year 1535, for the supporting of an organ of extraordinary excellence and beauty that stands thereon. [Illustration: _Lombardi_ A SYBIL (_Detail, after_ Giovanni Pisano, _from the facade of the Duomo, Siena_)] Giovanni Pisano likewise made the design of the Church of S. Maria de' Servi, which to-day has been destroyed, together with many palaces of the most noble families of the city, for the reasons mentioned above. I will not forbear to say that Giovanni made use, in working on the said marble altar, of certain Germans who had apprenticed themselves to him rather for learning than for gain; and under his teaching they became such that, having gone after this work to Rome, they served Boniface VIII in many works of sculpture for S. Pietro, and in architecture when he made Civita Castellana. Besides this, they were sent by the same man to S. Maria in Orvieto, where, for its facade, they made many figures in marble which were passing good for those times. But among others who assisted Giovanni in the work of the Vescovado in Arezzo, Agostino and Agnolo, sculptors and architects of Siena, surpassed in time all the others, as will be told in the proper place. But returning to Giovanni; having departed from Orvieto, he came to Florence, in order to see the fabric of S. Maria del Fiore that Arnolfo was making, and likewise to see Giotto, of whom he had heard great things spoken abroad; and no sooner had he arrived in Florence than he was charged by the Wardens of the said fabric of S. Maria del Fiore to make the Madonna which is over that door of the church that leads to the Canon's house, between two little angels; which work was then much praised. Next, he made the little baptismal font of S. Giovanni, wherein are certain scenes in half-relief from the life of that Saint. Having then gone to Bologna, he directed the building of the principal chapel of the Church of S. Domenico, wherein he was charged by Bishop Teodorigo Borgognoni of Lucca, a friar of that Order, to make an altar of marble; and in the same place he afterwards made, in the year 1298, the marble panel wherein are the Madonna and eight other figures, reasonably good.