He got up and he went out. There was a faint greyness of dawn now which showed him the great square of the city on which he and Lucy had looked from the prison window, a very long time ago as it seemed. He found without difficulty the ruins of the Hall of Justice. And among the vast blocks scattered on the ground was one that seemed of grey marble, and bore on its back in gigantic letters of gold the words _De Bello Gallico_. Philip stole back to the prison and roused the captain. 'I want twenty picked men,' he said, 'without boots--and at once.' He got them, and he led them to the ruins of the Justice Hall. 'Now,' he said, 'raise the cover of this book; only the cover, not any of the pages.' The men set their shoulders to the marble slab that was the book's cover and heaved it up. And as it rose on their shoulders Philip spoke softly, urgently. 'Caesar,' he said, 'Caesar!' And a voice answered from under the marble slab. 'Who calls?' it said. 'Who calls upon Julius Caesar?' And from the space below the slab, as it were from a marble tomb, a thin figure stepped out, clothed in toga and cloak and wearing on its head a crown of bays. '_I_ called,' said Philip in a voice that trembled a little. 'There's no one but you who can help. The barbarians of Gaul hold this city. I call on great Caesar to drive them away. No one else can help us.' Caesar stood for a moment silent in the grey twilight. Then he spoke. 'I will do it,' he said; 'you have often tried to master Caesar and always failed. Now you shall be no more ashamed of that failure, for you shall see Caesar's power. Bid your slaves raise the leaves of my book to the number of fifteen.' It was done, and Caesar turned towards the enormous open book. 'Come forth!' he said. 'Come forth, my legions!' Then something in the book moved suddenly, and out of it, as out of an open marble tomb, came long lines of silent armed men, ranged themselves in ranks, and, passing Caesar, saluted. And still more came, and more and more, each with the round shield and the shining helmet and the javelins and the terrible short sword. And on their backs were the packages they used to carry with them into war. 'The Barbarians of Gaul are loose in this city,' said the voice of the great commander; 'drive them before you once more as you drove them of old.' 'Whither, O Caesar?' asked one of the Roman generals. 'Drive them, O Titus Labienus,' said Caesar, 'back into that book wherein I set them more than nineteen hundred years ago, and from which they have dared to escape. Who is their leader?' he asked of Philip. 'The Pretenderette,' said Philip; 'a woman in a motor veil.' 'Caesar does not war with women,' said the man in the laurel crown; 'let her be taken prisoner and brought before me.' Low-voiced, the generals of Caesar's army gave their commands, and with incredible quietness the army moved away, spreading itself out in all directions.