It is the universal method of communication between neighbouring centres on either side of a watershed to follow, if they exist, two streams; one leading up to and the other down from the watershed. This method provides food and drink upon the way, it reduces all climbing to the one clamber over the saddle of the ridge, and, if the beginning of the path is struck out by doubtful pioneers, then, as every pioneer in a new country knows, ascending a stream is the best guide to a pass and descending one on the further side is the best guide to open spaces, and to the habitations of men.
This tributary gradually superseded the western end of the trail, and the Old Road from the west to the east, from the metal mines to the Straits of Dover, had at last Winchester for an origin and Canterbury for a goal. The neglected western end from Farnham to Stonehenge became called 'The Harrow Way,' that is the 'Hoar,' the 'Ancient' way.[2] It fell into disuse, and is now hardly to be recognised at all.
The prehistoric road as we know it went then at last in a great flat curve from Winchester to Canterbury, following the simplest opportunities nature afforded. It went eastward, first up the vale of the Itchen to the watershed, then down the vale of the Wey, and shortly after Farnham struck the range of the North Downs, to which it continued to cling as far as the valley of the Stour, where a short addition led it on to Canterbury.
Its general direction, therefore, when it had settled down into its final form, was something of this sort:—
When Winchester began to affirm itself as the necessary centre of south England—that is of open, rich, populated, and cultivated England—the new tributary road would rapidly grow in importance; and finally, the main traffic from the western hills and from much of the sea also, from Spain, from Brittany, and from western Normandy, probably from all southern Ireland, from the Mendips, the south of Wales, and the Cornish peninsula, would be canalised through Winchester. The road from Winchester to Farnham and so to Canterbury would take an increasing traffic, would become the main artery between the west and the Straits of Dover, and would leave the most permanent memorials of its service.
Winchester and Canterbury being thus each formed by the sea, and each by similar conditions in the action of that sea, the parallel between them can be drawn to a considerable length, and will prove of the greatest value when we come to examine the attitude of the Old Road towards the two cities which it connects. The feature that puzzles us in the approach to Canterbury may be explained by a reference to Winchester. An unsolved problem at the Winchester end may be referred for its solution to Canterbury, and the evidence of the two combined will be sufficient to convince us that the characters they possess in common are due to much more than accident.