Fine examples of the period are to be found in Verona, Mantua, and Pistoia, while the most beautiful is that of =Florence=, designed and begun by Giotto and completed after his death by Andrea Pisano. It is distinguished from other bell-towers of the Italian Gothic by the projections which mark its four stories and the bold cornice with machicolated ornament. The surface is further varied with geometric designs, composed of coloured marbles; while the windows are embellished with tracery of an elementary design, corresponding to that of the adjoining Cathedral windows. The sides of the lowest story, broken only by a small light, are enriched with statues and bas-reliefs, some of which were designed by Giotto and executed partly by him and partly by Andrea Pisano, others being added later by Luca della Robbia. In character of subjects they correspond to the selections at Amiens from the Encyclopædia of Vincent of Beauvais. Ruskin says of this building that it is the only one in the world, so far as he knows, in which the characteristics of Power and Beauty exist “in their highest possible relative degrees.” But power is a term that connotes varied qualities to different minds; and still more different to various temperaments and experiences is the term beauty. Perhaps if he had said that it combined strength and grace, or stability and tenderness, it would be easier to appreciate his judgment. For Giotto’s Campanile has an exquisiteness allied to dignity which is characteristic of Italian Gothic at its best, yet to the taste of many will ill compare with the vigour of the French and English styles. Suggestive of the persistence of the Romanesque style during the Gothic period the most notable instance is the =Certosa=, or Church of the Carthusian Order, in =Pavia=. The façade and lantern over the crossing are Renaissance additions; otherwise this splendid edifice, constructed of brick and terra-cotta, is, except for the Gothic refinement of the rib-vaulting, purely Romanesque. A gift to the monastery by Duke Gian Galeazzo Visconti, it was begun in 1396, nine years after this patron of art and letters had begun to build =Milan Cathedral=, the most important example in Italy of the Gothic style.