had long existed, not merely in the Romanesque, but in the Byzantine and late Roman. The series of temple-shaped windows on the outside of the Florence Baptistery and of San Miniato, has, for instance, its original in the Baptistery of Ravenna and the arch at Verona. What the Tuscans have done is to perfect the inner and subtler proportions, to restrain and accentuate, to phrase (in musical language) every detail of execution. By an accident of artistic evolution, this style of architecture, rather dully elaborated by a worn-out civilisation, has had to wait six centuries for life to be put into it by a finer-strung people at a chaster and more braced period of history. Nor should we be satisfied with such loose phrases as this, leading one to think, in a slovenly fashion (quite unsuitable to Tuscan artistic lucidity), that the difference lay in some vague metaphysical entity called _spirit_: the spirit of the Tuscan stonemasons of the early Middle Ages altered the actual tangible forms in their proportions and details: this spiritual quality affects us in their carved and inlaid marbles, their fluted pilasters and undercut capitals, as a result of actual work of eye and of chisel: they altered the expression by altering the stone, even as the frosts and August suns and trickling water had determined the expression, by altering the actual surface, of their lovely austere hills. V. The Tuscan quality in architecture must not be sought for during the hundred years of Gothic--that is to say, of foreign--supremacy and interregnum. The stonemasons of Pisa and of Florence did indeed apply their wholly classic instincts to the detail and ornament of this alien style; and one is struck by the delicacy and self-restraint of, say, the Tuscan ones among the Scaliger tombs compared with the more picturesque looseness of genuine Veronese and Venetian Gothic sculpture. But the constructive, and, so to speak, space enclosing, principles of the great art of mediaeval France were even less understood by the Tuscan than by any other Italian builders; and, as the finest work of Tuscan facade architecture was given before the Gothic interregnum, so also its most noble work, as actual spatial arrangement, must be sought for after the return to the round arch, the cupola and the entablature of genuine Southern building. And then, by a fortunate coincidence (perhaps because this style affords no real unity to vast naves and transepts), the architectural masterpieces of the fifteenth century are all of them (excepting, naturally, Brunelleschi's dome) very small buildings: the Sacristies of S. Lorenzo and S. Spirito, the chapel of the Pazzi, and the late, but exquisite, small church of the Carceri at Prato. The smallness of these places is fortunate, because it leaves no doubt that the sense of spaciousness--of our being, as it were, enclosed with a great part of world and sky around us--is an artistic illusion got by