The river from Thorney to the opposite shore, as we have seen, was fordable at low tide. The marsh, from Thorney to the rising ground on the west, was fordable probably at all tides--certainly at low tide. This ford, the only one across the river for many miles up stream, belonged from time immemorial to the highway, a road or beaten track leading from the north of England to the south, and “tapping” the midland country on the way. The road which the Saxons called Watling Street, when it reached this neighborhood, ran straight down Park Lane, or Tyburn Lane, as it was formerly called, to the edge of the marsh. There it ended abruptly. If you will draw this line on any map, you will find that it ended at the western extremity of St. James’s Park, just about Buckingham Palace, where the marsh began. At this point the traveler plunged into the shallow waters, and guided by stakes, waded--at low tide there were, haply, stepping-stones--across the swamp to Thorney. Here, if the tide served, he again trusted himself to the guidance of stakes; and so, breast high, it may be, waded through the river till he reached the opposite shore, where another high road, “Dover Street,” which also broke off abruptly at this point, awaited him. Later on, when London Bridge was built, Watling Street was diverted at the spot where now stands the Marble Arch, was carried along the present Oxford Street and Holborn, and passed through the City to the Bridge. This alternative route probably took away a great deal of the traffic: but for those who had business in the south or the southwest, or for those who were bound for the port of Dover, the ford was still preferred as the shorter way. A bridge was convenient, but the traveler of the fourth century was accustomed to a ford. Those who had no business in London were not likely to be turned out of their way by another ford, after they had crossed so many. The highroad between the north and south, the great highway into which were poured streams from all the other ways, passed through this double ford, and over the Isle of Bramble. This was not a highway passing through a wild and savage country; on the contrary, Britain was a country, in the two latter centuries of the Roman occupation, thickly populated, covered with great cities and busy towns. No one who has stood within the walls of Silchester, and has marked the foundations of its great hall, larger than Westminster Abbey, the remains of its corridors and courts and shops, the indications of wealth and luxury furnished by its villas, the extent of its walls, can fail to understand that the vanished civilization of Roman Britain was very far superior to anything that followed for a good deal more than a thousand years. It was more artistic, more luxurious, than the Saxon or the Norman life. But it was essentially Roman. Civilized Rome could not be understood by Western Europe until the fifteenth century. Roman Britain is only beginning to [Illustration]