Now, if you look once more at the map of the south as it was, you will observe that London at its first commencement had no communication with any part of the world except by water. The first road opened was, as I have said, the connection with Watling Street; what was the next? It was a connection with the high road to Dover: that connection was the road which we now call High Street, Borough. These two roads were the first communication between London and any other place; all the other roads, to the north and south and west and east, came afterwards. It was necessary for London to have an open and direct connection, by land as well as by sea, with the then principal port of the country. The High Street formed that open communication; it began not far to the west of St Saviour's Church, opposite the Roman Trajectus, the mediæval ferry, now St. Mary Overies Dock. Observe, however, that we are as yet very far from embanking the river, or draining the marsh, or making it inhabitable. If you walk across Hackney Marsh by one of its causeways any autumnal morning, especially after rain, you will understand something of what Southwark looked like. Two high causeways crossed the marsh, of which as yet not a square foot had been drained or reclaimed; yet the place was not so wild as it had been; the wild birds had been partly driven away by the noise and crowd of London, and by the concourse of ships sailing continually up and down. There was as yet no bridge. The ferry crossed the river backwards and forwards all day long. The causeways were crowded with people; but as yet nothing on the lowlands. Before the marshes could be drained the river had to be embanked. [Illustration: Barking Creek] No one knows when that was done. It was done, however. At some time or other a high earthwork was raised along the north and south banks of the river, enclosing the marshes, converting them into pasture and arable land, and keeping out the tides of Thames. It was a work of the most signal benefit; it was also a colossal piece of work, measured by hundreds of miles, for it was continued all round the islets and coast of Essex. It was a work requiring constant repair, though most of it has stood splendidly. The wall gave way, however, at Barking in the time of Henry the Second; at Wapping in the time of Elizabeth; at Dagenham early in the last century: at each of these places the repair of the wall was costly and difficult. The embankment left behind it a low-lying ground, rich and fertile; orchards and woods began to grow and to flourish upon it; yet it was still swampy in parts, numerous ponds lay about on it, streams wound their way confined in channels, and let out through the embankment at low tide by culverts.