They crossed the great square, which to Bellarion, learned in the history of the place, was holy ground. Here in the now vanished basilica the great Saint Augustine had been baptised. Here Saint Ambrose, that Roman prefect upon whom the episcopate had been almost forced, had entrenched himself in his great struggle with the Empress Justina, which marked the beginnings of that strife between Church and Empire, still kept alive by Guelph and Ghibelline after the lapse of a thousand years. Flanking the rising cathedral stood the Old Broletto, half palace, half stronghold, which from the days of Matteo Visconti had been the residence of the Lords of Milan. They rode under the portcullis into the great courtyard of the Arrengo, which derived a claustral aspect from its surrounding porticoes, and passed into the inner quadrangle known as the Court of Saint Gotthard. Here the company dismounted, and to Lonate, who held his stirrup for him, Gian Maria issued his orders concerning the prisoner before entering the palace. This bewitcher of dogs, he announced, should make entertainment for him after supper. Bellarion was conducted to a stone cell underground, which was supplied with air and as much light as would make a twilight of high noon by a grating set high in the massive door. It was very cold and pervaded by a moist, unpleasant, fungoid odour. The darkness and chill of the place struck through him gradually to his soul. He was very hungry, too, which did not help his courage, for he had eaten nothing since midday, and not so much as a crust of bread did his gaolers have the charity to offer him. At long length--at the end of two hours or more--the Duke's magnificence came to visit him in person. He was attended by Messer Lonate and four men in leather jerkins, one of whom was Squarcia. His highness sought to make up in gaudiness of raiment for what he lacked of natural endowments. He wore a trailing, high-necked velvet houppelande, one half of which was white, the other red, caught about his waist by a long-tongued belt of fine gold mail that was studded with great rubies. From waist to ground the long gown fell open as he moved showing his legs which were cased, the one in white, the other in scarlet. They were the colours of his house, colours from which he rarely departed in his wear, following in this the example set him by his illustrious sire. On his head he wore a bulging scarlet cap tufted at the side into a jagged, upright mass like a cock's comb. His goggling eyes measured the prisoner with a glance which almost sent a shudder through Bellarion. 'Well, rogue? Will you talk now? Will you confess what was the magic that you used?' 'Lord Duke, I used no magic.'