An interesting lecture on “Early British Track-ways, Moats, Mounds, Camps and Sites” was recently given by Mr. Alfred Watkins, F.R.P.S., to the Woolhope Club, Hereford. The lecture was based on his main conclusion that during a long period, the limits of which remain to be discovered, but apparently from the Neolithic (later flint) age on past the Roman occupation into a period of decay, all trackways were in straight lines marked out by experts on a sighting system.
Source info: MS note by AW “Popular Science Siftings Nov 1922”; weekly journal.